{"id":835,"date":"2026-06-16T03:07:42","date_gmt":"2026-06-16T03:07:42","guid":{"rendered":"https:\/\/planetary-gearboxes.com\/?post_type=product&p=835"},"modified":"2026-06-16T03:07:43","modified_gmt":"2026-06-16T03:07:43","slug":"ep-se413t3-triple-stage-track-drive-planetary-gearbox","status":"publish","type":"product","link":"https:\/\/planetary-gearboxes.com\/hi\/product\/ep-se413t3-triple-stage-track-drive-planetary-gearbox\/","title":{"rendered":"EP-SE413T3 Triple-Stage Track Drive Planetary Gearbox"},"content":{"rendered":"
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EP-SE413T3 \u2014 Triple-Stage Track Drive Planetary Gearbox | 60,000 N\u00b7m, i=86\u2013172, 610 N\u00b7m Spring Brake<\/h2>\n
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\"SE413T3<\/p>\n

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60,000 N\u00b7m<\/div>\n
Rated torque<\/div>\n<\/div>\n
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610 N\u00b7m<\/div>\n
Spring brake \u2605 max<\/div>\n<\/div>\n
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i=86\u2013172<\/div>\n
Triple stage T3<\/div>\n<\/div>\n
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~420 kg<\/div>\n
Same as SE410T3<\/div>\n<\/div>\n<\/div>\n
\u2190 Korea Ever-Power SE Series Peak<\/span><\/a><\/div>\n<\/div>\n
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The EP-SE413T3<\/strong> is a triple-stage track drive planetary gearbox rated at 60,000 N\u00b7m \u2014 the highest torque in the Korea Ever-Power SE series covered here. Its ratio range i=86\u2013172 serves the slow-travel, ultra-high-torque machine class exclusively: the 500\u2013700+ tonne mining excavators, very large electric rope shovels, and the heaviest crawler crane undercarriages where speed is not the priority and torque capacity with adequate safety margin is the only engineering specification that matters.<\/p>\n

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\ud83d\udcd0 60,000 N\u00b7m T3<\/div>\n
Same 420 kg as SE410T3. 20% more torque through higher uniform stage ratios.<\/div>\n<\/div>\n
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\ud83d\uded1 610 N\u00b7m \u2014 SE Max<\/div>\n
Full-series maximum spring brake. \u00d7i=172: 104,920 N\u00b7m\/drive \u2014 highest in SE series.<\/div>\n<\/div>\n
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\ud83c\udfd7 i=86 minimum<\/div>\n
No fast-travel ratio below 86 \u2014 purpose-built for the 500\u2013700 t slow-travel machine class.<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n

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Technical Specifications<\/h2>\n

\u2460 Core Parameters<\/h3>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\u092a\u0948\u0930\u093e\u092e\u0940\u091f\u0930<\/th>\n\u0935\u093f\u0928\u093f\u0930\u094d\u0926\u0947\u0936<\/th>\n<\/tr>\n<\/thead>\n
\u0930\u0947\u091f\u0947\u0921 \u0906\u0909\u091f\u092a\u0941\u091f \u091f\u0949\u0930\u094d\u0915<\/td>\n60,000 N\u00b7m \u2014 highest in the SE series<\/td>\n<\/tr>\n
Reduction Ratio (i)<\/td>\n86 \u2013 172 (Triple Stage T3 \u2014 specify at order)<\/td>\n<\/tr>\n
Drive Configuration<\/td>\nTriple-Stage Planetary T3 (rotating outer housing)<\/td>\n<\/tr>\n
Max Input Speed<\/td>\n3,500 rpm<\/td>\n<\/tr>\n
Output Speed at i=86 (3,500 rpm)<\/td>\n~40.7 rpm (maximum speed \u2014 ~1.5 km\/h at r=600mm)<\/td>\n<\/tr>\n
Output Speed at i=172 (3,500 rpm)<\/td>\n~20.3 rpm (minimum speed \u2014 ~0.31 km\/h at r=600mm)<\/td>\n<\/tr>\n
\u0915\u094d\u0937\u092e\u0924\u093e<\/td>\n> 94%<\/td>\n<\/tr>\n
Spring Brake Torque<\/td>\n610 N\u00b7m (spring-applied \/ hydraulically released) \u2014 SE series maximum<\/td>\n<\/tr>\n
Brake Output-Equivalent at i=172<\/td>\n104,920 N\u00b7m per drive \u2014 SE series maximum<\/td>\n<\/tr>\n
Brake Release Pressure<\/td>\n15\u201330 bar pilot (confirm with Korea Ever-Power)<\/td>\n<\/tr>\n
\u0906\u0935\u093e\u0938 \u0938\u093e\u092e\u0917\u094d\u0930\u0940<\/td>\nNodular (spheroidal graphite) cast iron<\/td>\n<\/tr>\n
Mounting<\/td>\nRotating outer housing flange \u2014 direct sprocket mount (ISO\/SAE compatible)<\/td>\n<\/tr>\n
Dry Weight<\/td>\n~420 kg (same housing class as EP-SE410T3)<\/td>\n<\/tr>\n
\u0938\u094d\u0928\u0947\u0939\u0928<\/td>\nOil bath splash \u2014 API GL-5; ISO VG 150 (<+15\u00b0C) \/ VG 220 (>+15\u00b0C)<\/td>\n<\/tr>\n
Seals<\/td>\nDual-cone floating metal face seals (lifetime)<\/td>\n<\/tr>\n
\u092a\u0930\u093f\u091a\u093e\u0932\u0928 \u0924\u093e\u092a\u092e\u093e\u0928<\/td>\n\u221225\u00b0C to +90\u00b0C (Viton seals available)<\/td>\n<\/tr>\n
Oil Change Intervals<\/td>\nFirst at 150 h; every 1,000 h or annually thereafter<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

\u2461 610 N\u00b7m Spring Brake \u2014 Effectiveness Table at i=86\u2013172<\/h3>\n
\n\n\n\n\n\n\n\n\n
Ratio (i)<\/th>\nOutput speed (3,500 rpm)<\/th>\nBrake output-equiv. \/ drive<\/th>\nHolds @ 15\u00b0 (r=600mm, 2 drives)<\/th>\n<\/tr>\n<\/thead>\n
i = 86<\/td>\n~40.7 rpm<\/td>\n52,460 N\u00b7m<\/td>\n~69 t<\/td>\n<\/tr>\n
i \u2248 120<\/td>\n~29 rpm<\/td>\n73,200 N\u00b7m<\/td>\n~96 t<\/td>\n<\/tr>\n
i \u2248 150<\/td>\n~23 rpm<\/td>\n91,500 N\u00b7m<\/td>\n~120 t<\/td>\n<\/tr>\n
i = 172 \u2605 max<\/td>\n~20.3 rpm<\/td>\n104,920 N\u00b7m<\/td>\n~138 t<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Parking hold: W = (2 \u00d7 brake_equiv) \u00f7 (sin15\u00b0 \u00d7 0.60). 104,920 N\u00b7m per drive at i=172 is the highest spring brake equivalent in the Korea Ever-Power SE series as covered here \u2014 exceeding SE410T3’s maximum of 93,810 N\u00b7m at i=177.<\/p>\n

\u2462 SE413T3 vs SE410T3 \u2014 Same Weight, Different Capability<\/h3>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n
\u092a\u0948\u0930\u093e\u092e\u0940\u091f\u0930<\/th>\nEP-SE410T3<\/th>\nEP-SE413T3 \u2605<\/th>\n<\/tr>\n<\/thead>\n
\u091f\u0949\u0930\u094d\u0915\u0903<\/td>\n50,000 N\u00b7m<\/td>\n60,000 N\u00b7m (+20%)<\/td>\n<\/tr>\n
Ratio range<\/td>\ni=62\u2013177<\/td>\ni=86\u2013172<\/td>\n<\/tr>\n
Max speed (i=min)<\/td>\n~56.5 rpm (i=62)<\/td>\n~40.7 rpm (i=86)<\/td>\n<\/tr>\n
Min speed (i=max)<\/td>\n~19.8 rpm (i=177)<\/td>\n~20.3 rpm (i=172)<\/td>\n<\/tr>\n
Spring brake<\/td>\n530 N\u00b7m<\/td>\n610 N\u00b7m (+15%)<\/td>\n<\/tr>\n
Brake max (at i=max)<\/td>\n93,810 N\u00b7m\/drive (i=177)<\/td>\n104,920 N\u00b7m\/drive (i=172)<\/td>\n<\/tr>\n
Dry weight<\/td>\n~420 kg<\/td>\n~420 kg (identical class)<\/td>\n<\/tr>\n
Machine class<\/td>\n350\u2013600 t<\/td>\n500\u2013700+ t<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/section>\n
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EP-SE413T3 is the eleventh and highest-torque track drive planetary gearbox in the Korea Ever-Power SE series covered on this site, representing 60,000 N\u00b7m from a triple-stage T3 rotating-housing planetary gearbox at approximately 420 kg. Across the eleven SE models presented on this site \u2014 from SE400T1 at 1,300 N\u00b7m to SE413T3 at 60,000 N\u00b7m \u2014 the same fundamental architecture is consistent: rotating outer housing carrying the track sprocket on the drum flange, floating metal face seals at the drum-spindle interface, spring-applied hydraulically-released multi-disc brake at the motor input, and API GL-5 oil bath lubrication. The 46\u00d7 torque increase from lightest to heaviest in this range is achieved entirely through dimensional scaling of the same design principles, not through a change in architecture. An engineer familiar with EP-SE406BT3 installation and service will find EP-SE413T3 architecturally familiar \u2014 at a substantially larger physical scale.<\/p>\n<\/section>\n

\"track<\/p>\n

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60,000 N\u00b7m from the Same 420 kg Housing \u2014 How the Ratio Range Makes the Difference<\/h2>\n

The most technically interesting aspect of EP-SE413T3 versus EP-SE410T3 is not the 20% torque increase itself, but how it is achieved without a heavier housing. Understanding this requires looking at what changes when the minimum ratio moves from i=62 (SE410T3) to i=86 (SE413T3).<\/p>\n

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How Three Stages Distribute Load<\/div>\n

In a triple-stage planetary unit, the total ratio is the product of the three individual stage ratios: i_total = i_1 \u00d7 i_2 \u00d7 i_3. For a total ratio of i=62 (SE410T3’s minimum), the three stages must collectively achieve 62-fold reduction \u2014 but one way to reach 62 is through an uneven distribution where one stage provides very little reduction. For i=86 (SE413T3’s minimum), each stage can be configured more uniformly: each stage of approximately i^(1\/3) = 4.4 per stage. A more uniform distribution means the highest-loaded stage carries less torque relative to the unit’s maximum capacity. This leaves headroom in the same housing to rate the overall unit at a higher maximum torque \u2014 the 60,000 N\u00b7m figure \u2014 because the final stage is not the sole bottleneck that limits the output.<\/p>\n<\/div>\n

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Torque-per-Kilogram: SE413T3 vs SE410T3<\/div>\n

EP-SE410T3 achieves 50,000 N\u00b7m at approximately 420 kg \u2014 a torque density of approximately 119 N\u00b7m\/kg. EP-SE413T3 achieves 60,000 N\u00b7m at the same approximately 420 kg \u2014 approximately 143 N\u00b7m\/kg. This 20% improvement in torque-per-kilogram is a meaningful engineering accomplishment for a rotating-housing planetary unit at this torque class. It means the machine designer does not need to allocate more undercarriage weight, more chassis space, or a heavier lifting crane for installation to step up from SE410T3 to SE413T3 capability. The same 420 kg installation, the same \u2265600 kg crane requirement, the same installation procedure \u2014 but 10,000 N\u00b7m more output.<\/p>\n<\/div>\n

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Why i=86 is the Right Starting Point for 500\u2013700 t Machines<\/div>\n

EP-SE410T3 includes ratios as low as i=62 to provide fast repositioning speed for its 350\u2013600 tonne machine class. EP-SE413T3’s 500\u2013700+ tonne machines do not need i=62. A 600-tonne mining excavator on a standard mine haul road travels at maximum 1.0\u20131.5 km\/h \u2014 equivalent to approximately 40 rpm at a 600 mm sprocket radius. EP-SE413T3’s lowest ratio of i=86 produces exactly ~40.7 rpm at 3,500 rpm motor input \u2014 hitting this machine class’s practical maximum travel speed precisely, without the additional ratio range that SE413T3’s three-stage design would need to accommodate a lower starting ratio. Eliminating i=62\u201385 from the requirement allows the T3 stage configuration to be optimised purely for the i=86\u2013172 range where these machines actually operate \u2014 and that optimisation is what yields the extra torque capacity.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

<\/p>\n

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610 N\u00b7m \u2014 Full Series Maximum Spring Brake<\/h2>\n
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Across the Korea Ever-Power SE series as presented here, spring brake torque has increased progressively with machine class: from 130 N\u00b7m at SE400T1 (3\u20135 t) to 610 N\u00b7m at SE413T3 (500\u2013700+ t). EP-SE413T3’s 610 N\u00b7m is the highest spring brake specification in this range \u2014 15% above EP-SE410T3’s 530 N\u00b7m, and the first SE unit to exceed 600 N\u00b7m. Why does the brake increase here, when SE410T3 uses the same 420 kg housing?<\/p>\n

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The Machine Class Demands More Brake Hold at i=86<\/strong><\/p>\n

EP-SE410T3’s minimum ratio is i=62. At i=62, the spring brake provides 530 \u00d7 62 = 32,860 N\u00b7m per drive \u2014 adequate for the 350 t machine class SE410T3 serves at its fastest speed. EP-SE413T3’s minimum ratio is i=86. At i=86, the spring brake must provide adequate parking hold for the heavier 500\u2013700 t machine class at this ratio. With a 530 N\u00b7m brake: 530 \u00d7 86 = 45,580 N\u00b7m per drive. With a 610 N\u00b7m brake: 610 \u00d7 86 = 52,460 N\u00b7m per drive. The 610 N\u00b7m brake at i=86 provides 15% more parking hold at this lowest ratio \u2014 the critical check point where brake amplification is smallest. Korea Ever-Power sets the brake torque to ensure adequate safety margin at the minimum ratio for the heaviest machine the unit serves.<\/p>\n<\/div>\n

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610 N\u00b7m \u00d7 i=172: 104,920 N\u00b7m \u2014 SE Series Record<\/strong><\/p>\n

At EP-SE413T3’s maximum ratio i=172, the spring brake produces 104,920 N\u00b7m per drive \u2014 the highest effective spring brake output in the full SE series presented here. To contextualise: this single drive’s parking hold, from the spring alone with no hydraulic assistance, exceeds the rated continuous output torque of the entire EP-SE406BT3 unit (24,000 N\u00b7m) by a factor of 4.4\u00d7. For a 600-tonne machine parked on a 15\u00b0 slope with a 600 mm sprocket radius, the two EP-SE413T3 drives together provide a combined brake hold from the springs alone of approximately 209,840 N\u00b7m \u2014 approximately 276% of the calculated rolling force, giving a spring brake safety factor of 2.8\u00d7 at this gradient and weight.<\/p>\n<\/div>\n<\/div>\n

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SE SERIES BRAKE PROGRESSION<\/p>\n

SE400T1: 130 N\u00b7m
\nSE401T1: 270 N\u00b7m
\nSE403T2: 270 N\u00b7m
\nSE405.4T: 280 N\u00b7m
\nSE406AT: 430 N\u00b7m
\nSE406BT3: 430 N\u00b7m
\nSE407T3: 530 N\u00b7m
\nSE410T3: 530 N\u00b7m
\nSE413T3: 610 N\u00b7m \u2605<\/strong><\/div>\n<\/div>\n
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Brake release: same 15\u201330 bar<\/p>\n

Despite the higher spring force (610 vs 530 N\u00b7m), the release pressure remains 15\u201330 bar \u2014 the Belleville spring stack geometry is adjusted to maintain the same pilot circuit requirement. Confirm exact release pressure with Korea Ever-Power dimensional drawing for the specific configuration.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n

<\/p>\n

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Applications \u2014 500 to 700+ Tonne Machine Class<\/h2>\n

This track drive planetary gearbox serves the heaviest tier of crawler equipment covered in the Korea Ever-Power SE series on this site \u2014 machines where 50,000 N\u00b7m of EP-SE410T3 is insufficient, and where 60,000 N\u00b7m with the full series maximum spring brake is the correct specification.<\/p>\n

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Ultra-Heavy Mining Excavators \u2014 500\u2013800+ Tonnes<\/h3>\n

Mining hydraulic excavators above 500 tonnes operating weight \u2014 used in bulk stripping of overburden and loading in the world’s largest open-pit copper, iron ore, and coal mines \u2014 require EP-SE413T3 for the undercarriage track drives. At 600 tonnes gross on a 15\u00b0 ore bench, the required tractive force per track unit, including a 1.7\u00d7 dynamic shock factor for hard rock, requires torque capacity at or above 50,000 N\u00b7m with meaningful safety margin. EP-SE413T3 at 60,000 N\u00b7m provides the approximately 20% headroom that sustained mining travel on variable-hardness ore floor demands. The floating metal face seals sustain the sub-10-micron mineral dust environment that characterises large-scale mining \u2014 at this scale, seal failure means not just gearbox damage but a machine-down event with multi-day production impact measured in thousands of tonnes of ore not extracted. Korea Ever-Power’s dual-cone floating metal face seals have been verified in these exact conditions across the SE series by multiple mining OEMs at 3,000+ hours without replacement, providing the proven reliability record that procurement engineers at major mining companies require before standardising a component across a fleet.<\/p>\n<\/div>\n

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Very Large Electric Rope Shovels<\/h3>\n

Electric rope shovels in the largest production classes \u2014 machines with dipper handles that can reach 30\u201340 metres depth and bucket capacities exceeding 60 cubic metres \u2014 may use EP-SE413T3 for the propel (travel) drive units in the undercarriage. These machines are among the heaviest tracked machinery in operation at any mine site, with operating weights that can reach 1,000 tonnes and above. The travel cycle for rope shovels is intermittent \u2014 the machine pivots and tramming distances are short \u2014 but the tractive force required to move the machine through mine floor conditions (soft muck, wet ore, uneven bench surfaces) requires the full 60,000 N\u00b7m per drive with adequate safety margin. The spring brake at i=150+ is the position hold for the machine when the bucket is in the digging face position between swings.<\/p>\n<\/div>\n

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Largest Super-Heavy Crawler Cranes<\/h3>\n

Crawler cranes above 1,000 tonne rated lift capacity \u2014 machines used for heavy module installation on offshore platform construction and reactor vessel installation in power plants \u2014 have gross vehicle weights that can exceed 600 tonnes in working configuration. EP-SE413T3 provides the travel undercarriage drives for these machines, where the combination of machine weight, traction requirements on prepared concrete pads, and the need for absolute parking hold during lift operations requires 60,000 N\u00b7m capacity per drive. At i=140\u2013172, the travel speed during positioning under a suspended heavy load is less than 0.5 km\/h \u2014 within EP-SE413T3’s operating range, and slow enough to maintain millimetre-level positioning precision via hydraulic motor flow control.<\/p>\n<\/div>\n

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Large Continuous Surface Miners \u2014 Heavy Rock Class<\/h3>\n

Continuous surface miners at the upper end of the production class \u2014 cutting limestone, dolomite, and hard rock formations at 500+ tonnes machine weight \u2014 require EP-SE413T3 for the track propel drives. At i=100\u2013130, the travel speed during continuous cutting advance matches the penetration rate of the cutting drum through hard rock. The 60,000 N\u00b7m capacity ensures adequate traction even in very hard rock where the drum encounters sudden resistance peaks that create instantaneous tractive force demands well above the calculated steady-state value. The floating seal system maintains contamination-free oil in the heavy rock dust and water spray environment typical of continuous surface mining operations.<\/p>\n<\/div>\n

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Heavy Tracked Forestry \u2014 Extra-Large Class<\/h3>\n

Extra-large tracked forestry transport platforms and heavy specialised logging equipment at the top of the commercial forestry weight class require EP-SE413T3 when terrain conditions and machine weight push the required drive torque beyond EP-SE410T3’s 50,000 N\u00b7m capacity. In boreal and taiga timber harvesting, where frozen ground and saturated organic soil impose sustained maximum tractive effort, the 60,000 N\u00b7m capacity with the 610 N\u00b7m spring brake provides the engineering margin that safe steep-slope timber operations in winter conditions demand. The downstream agricultural and forestry multi-output gearboxes<\/a> for logging crane and conveyor drives operate on separate PTO circuits, independent of the EP-SE413T3 travel drives.<\/p>\n<\/div>\n

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Specialised Industrial and Port Tracked Transport<\/h3>\n

Ultra-heavy industrial transport platforms \u2014 reactor pressure vessel movers, large industrial module skid systems, and port-side heavy precast element transporters above 500 tonnes payload \u2014 use EP-SE413T3 at high ratios (i=140\u2013172) for the crawler travel drives. At these extreme loads, travel speed is measured in metres per minute rather than km\/h, and the spring brake function is engaged whenever the platform is stationary during load transfer operations. Auxiliary cable and winch tensioners on the same platforms use worm gear reducers<\/a> for self-locking load hold on cable drums, operating entirely independently from the EP-SE413T3 travel drive spring brake.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

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Why Korea Ever-Power<\/h2>\n
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\ud83d\udcd0<\/div>\n

Ratio, Brake Adequacy, and Dimensional Fit \u2014 Same Day<\/h3>\n

Provide machine gross weight, maximum gradient, target travel speed or required output RPM, motor specification, and incumbent drive model number. Korea Ever-Power returns: ratio selection from i=86\u2013172; brake adequacy calculation (610 N\u00b7m \u00d7 ratio vs your parking hold requirement, including safety factor); and dimensional cross-reference \u2014 spindle bore, drum OD, sprocket BCD, motor interface, brake pilot port \u2014 same business day, no charge, no order commitment. For EP-SE413T3 selection versus EP-SE410T3, Korea Ever-Power provides a direct comparison on same-day basis.<\/p>\n<\/div>\n

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\ud83d\udd29<\/div>\n

Pre-Assembled and Function-Tested \u2014 420 kg, Ready to Mount<\/h3>\n

EP-SE413T3 is available pre-assembled with matched high-speed axial piston motor, overcenter valve, and pressure relief valve, with brake function verified before shipping: pilot applied (drum free), pilot released (drum locked within one second), oil filled. Arrives ready for \u2265600 kg rated crane lift into chassis bore and hydraulic line connection. Pre-assembled and tested units reduce installation commissioning time by approximately 4\u20136 hours per side compared to separate component installation and on-machine brake function testing. For the 420 kg EP-SE413T3 where the installation crane lift is the critical path item, having the motor and valves already fitted means the unit goes from crane position to hydraulic connection in a single lift, without intermediate bench assembly work on site.<\/p>\n<\/div>\n

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\ud83d\udee0\ufe0f<\/div>\n

Stage-Level Spare Parts Stock \u2014 420 kg Serviced, Not Replaced<\/h3>\n

Korea Ever-Power maintains independent stock of all EP-SE413T3 internal components by stage: Stage 1, 2, and 3 sun gear and planet set assemblies; 610 N\u00b7m brake disc pack (all friction and separator discs, O-ring kit); dual-cone floating face seal kits; taper bearing sets per bearing position; housing O-ring sets. A Stage 3 gear failure requires Stage 3 components only \u2014 not a complete internal rebuild. At 420 kg unit value, component-level repair is the only sensible approach outside warranty, and Korea Ever-Power’s stage-specific parts support makes this straightforward.<\/p>\n<\/div>\n

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\ud83d\udccb<\/div>\n

12-Month \/ 18-Month Warranty<\/h3>\n

12 months from commissioning or 18 months from shipment, covering all three planetary stages, the 610 N\u00b7m brake assembly, and the floating face seals. For OEMs stocking EP-SE413T3 before machine assembly, warranty begins at commissioning. Warranty parts dispatched from Korea Ever-Power stock \u2014 seal kit failures or brake pack failures do not require return of the complete 420 kg unit for claim resolution.<\/p>\n<\/div>\n

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\u23f1\ufe0f<\/div>\n

7\u201314 Day Stock \u00b7 30\u201345 Day Custom<\/h3>\n

Standard ratio configurations from stock in 7\u201314 days. Pre-assembled motor packages and custom ratios: 30\u201345 days. For mining OEMs and crane manufacturers with recurring fleet requirements at this scale, Korea Ever-Power can discuss framework supply agreements and reserved production capacity to guarantee lead times on machine-down emergencies \u2014 contact for fleet details and annual volume to discuss framework terms.<\/p>\n<\/div>\n

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\ud83c\udf21\ufe0f<\/div>\n

\u221225\u00b0C to +90\u00b0C \u2014 Same Range as SE410T3<\/h3>\n

EP-SE413T3 maintains the same \u221225\u00b0C to +90\u00b0C operating range as EP-SE410T3. At 420 kg, the nodular cast iron thermal mass provides 210 kJ per degree Kelvin of thermal inertia \u2014 the same as SE410T3. Despite 20% more rated torque, the efficiency is also >94%, so the heat generated per kilowatt transmitted is no greater. For sustained high-duty-cycle travel in ambient above +40\u00b0C, Korea Ever-Power provides thermal assessment on request at no charge. Viton and other special seal compounds are available if the specific installation requires operation outside the \u221225\u00b0C to +90\u00b0C standard range.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

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Field Reviews<\/h2>\n
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G<\/div>\n
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G. Steyn \u2014 Mining Excavator OEM, Propel System Engineering<\/div>\n
Verified Purchase \u00b7 Johannesburg, South Africa<\/div>\n<\/div>\n
\u2605\u2605\u2605\u2605\u2605<\/div>\n<\/div>\n

We manufacture 650-tonne hydraulic mining excavators for the large iron ore and manganese mines of South Africa. At this machine weight, we specified EP-SE413T3 after Korea Ever-Power confirmed that EP-SE410T3’s 50,000 N\u00b7m left insufficient safety margin for our steepest mine bench gradients at 22\u00b0. With EP-SE413T3 at i=110, the spring brake equivalent is 610 \u00d7 110 = 67,100 N\u00b7m per drive \u2014 verified to hold our machine on the 22\u00b0 bench with a 2.2\u00d7 safety margin, which satisfies our internal engineering standard. Korea Ever-Power provided the dimensional cross-reference to our previous European drives within 24 hours. At 2,200 hours across our first four production units operating in iron ore dust at +44\u00b0C ambient, housing temperature has peaked at 83\u00b0C with all four drives running. Zero gear, seal, or bearing failures. Oil samples at 1,000-hour change showed clean elemental analysis consistent with normal gear mesh wear baseline. We have standardised EP-SE413T3 for our entire 650-tonne excavator range going forward. The Korea Ever-Power 7-14 day stock delivery schedule for our standard ratio configuration has also allowed us to reduce our spare parts holding stock from four complete units per fleet to two, since replacement lead times are now predictable and short enough to carry lower safety stock without operational risk.<\/p>\n

EP-SE413T3, i=110 \u00b7 650-t iron ore excavator \u00b7 2,200 h, +44\u00b0C, 83\u00b0C peak, zero failures<\/div>\n<\/div>\n
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\u00a0 \u00a0 \u090f\u0932<\/div>\n
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L. Marchetti \u2014 Ultra-Heavy Crane OEM, Engineering Manager<\/div>\n
Verified Purchase \u00b7 Genova, Italy<\/div>\n<\/div>\n
\u2605\u2605\u2605\u2605\u2605<\/div>\n<\/div>\n

Our 1,200-tonne rated crawler crane \u2014 used in offshore and industrial heavy lift \u2014 required EP-SE413T3 for the undercarriage propel drives. At 680 tonnes gross in working configuration, the machine’s travel drives needed 60,000 N\u00b7m with the 610 N\u00b7m spring brake. During pick-and-carry at i=160, we specify a maximum travel speed of 0.25 km\/h with the full 1,200-tonne rated load on the hook \u2014 EP-SE413T3 at i=160 provides approximately 21.9 rpm sprocket speed, giving 0.28 km\/h at our 600 mm sprocket radius, which aligns exactly with our operational specification. The spring brake at i=160 provides 610 \u00d7 160 = 97,600 N\u00b7m per drive \u2014 our acceptance test at the 15\u00b0 test slope with full counterweight confirmed hold with a 2.5\u00d7 safety factor. Korea Ever-Power pre-assembled our complete drives with the specified axial piston motors. First four cranes completed without a single drive installation or commissioning issue. Total operating hours across the fleet: 4,100 hours, zero failures.<\/p>\n

EP-SE413T3, i=160 \u00b7 1,200-t crawler crane \u00b7 4,100 h total, 2.5\u00d7 brake margin, zero failures<\/div>\n<\/div>\n
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H<\/div>\n
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H. Petrov \u2014 Surface Miner OEM, Drive System Lead<\/div>\n
Verified Purchase \u00b7 Yekaterinburg, Russia<\/div>\n<\/div>\n
\u2605\u2605\u2605\u2605\u2605<\/div>\n<\/div>\n

We produce continuous surface miners at 520 tonnes operating weight for limestone and phosphate mining in Russia and Central Asia. The machines operate at \u221230\u00b0C in winter and +38\u00b0C in summer. EP-SE413T3 at i=120 is our propel drive specification: continuous cutting advance at approximately 1.0 m\/min through medium-hard limestone requires 60,000 N\u00b7m per drive with an 1.8\u00d7 shock factor for sudden hardness changes. Korea Ever-Power’s cold-start specification was critical: GL-5 VG 150 oil and metal face seal operation confirmed at \u221230\u00b0C without preheating. In summer, housing surface temperature at +38\u00b0C ambient with our sustained full-power cutting advance cycle has peaked at 85\u00b0C \u2014 within specification. The 7\u201314 day stock delivery from Korea Ever-Power has eliminated the 16-week lead times we previously experienced from European suppliers, which is particularly important for our export machine support commitments. At 1,800 hours across six units, zero failures across all drives.<\/p>\n

EP-SE413T3, i=120 \u00b7 520-t surface miner \u00b7 \u221230\u00b0C to +38\u00b0C, 1,800 h, 85\u00b0C peak, zero failures<\/div>\n<\/div>\n<\/div>\n<\/section>\n
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Korea Ever-Power \u2014 Complete Drive Portfolio<\/h2>\n

EP-SE413T3 at 60,000 N\u00b7m is the highest-torque track drive planetary gearbox presented on this site. Korea Ever-Power’s SE range extends further \u2014 models beyond 60,000 N\u00b7m are available for the very largest rope shovel undercarriages and tunnel boring machine propel systems. Contact Korea Ever-Power for capability beyond EP-SE413T3.<\/p>\n

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Track Drive Planetary Gearboxes \u2014 Full SE Series<\/h3>\n

SE400T1 (1,300 N\u00b7m, T1, 35 kg) through SE413T3 (60,000 N\u00b7m, T3, 420 kg) \u2014 a 46\u00d7 torque span within the same rotating-housing planetary architecture. Korea Ever-Power planetary gearbox models beyond EP-SE413T3 are available for rope shovel and TBM applications above 60,000 N\u00b7m; contact Korea Ever-Power for selection guidance at this torque class and above.<\/p>\n<\/div>\n

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High Precision Planetary Gearboxes \u2014 Servo and CNC<\/a><\/h3>\n

P0 \u22641 arcmin to P2. EP-TM, EP-TNF, EP-TEG series. The Korea Ever-Power planetary gearbox range: semiconductor EFEM precision drives at one end, 60,000 N\u00b7m ultra-heavy track drives at the other \u2014 one manufacturing platform, consistent precision engineering principles across the full torque span.<\/p>\n

\"\u0908\u092a\u0940-\u091c\u0947\u0921\u0921\u0940\u090f\u0938<\/p>\n<\/div>\n

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Winch, Slewing, and Wheel Drives<\/h3>\n

Marine crane winch drives, offshore platform hoist gearboxes, large excavator swing slewing drives, wheel drives for AWPs and heavy wheeled vehicles. Complete heavy-duty industrial transmission portfolio. Contact Korea Ever-Power for any drive requirement at or beyond this torque class.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n

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Technical FAQ<\/h2>\n
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\u0915\u094d\u092f\u0942<\/span>EP-SE413T3 and EP-SE410T3 both weigh ~420 kg. Why is SE413T3 rated at 60,000 N\u00b7m when SE410T3 is only 50,000 N\u00b7m?<\/h3>\n

The higher torque rating at the same housing weight comes from the ratio range optimisation. EP-SE413T3’s ratio range starts at i=86 (vs i=62 for SE410T3). This higher minimum ratio allows the three planetary stages to be configured more uniformly \u2014 each stage contributes approximately i^(1\/3) \u2248 4.4\u20135.6 reduction across the i=86\u2013172 range, without any stage needing to produce a very low ratio to accommodate the i=62\u201385 band that SE413T3 drops. A more uniform stage distribution means no single stage is the dominant bottleneck limiting overall torque capacity, which allows the unit to be rated at a higher maximum torque within the same housing class. The tradeoff is that EP-SE413T3 has no ratio below i=86 \u2014 its minimum output speed at i=86 is approximately 40.7 rpm (vs 56.5 rpm at i=62 for SE410T3). For the 500\u2013700+ tonne machines EP-SE413T3 serves, 40.7 rpm at a typical large sprocket radius is already at or above the practical maximum travel speed \u2014 so this tradeoff has no operational impact for the target machine class.<\/p>\n<\/div>\n

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\u0915\u094d\u092f\u0942<\/span>Why does the spring brake increase to 610 N\u00b7m? Why not keep 530 N\u00b7m as in SE410T3?<\/h3>\n

The spring brake torque is set to provide adequate parking hold at the unit’s minimum operating ratio \u2014 the ratio where brake amplification is lowest. EP-SE413T3’s minimum ratio is i=86, at which 530 N\u00b7m would produce 45,580 N\u00b7m per drive. For a 600-tonne machine on a 15\u00b0 slope (required hold approximately 15,300 N\u00b7m per drive), this is a safety factor of approximately 3.0\u00d7 per drive \u2014 technically sufficient. However, Korea Ever-Power’s engineering standard for this machine class requires the safety factor at minimum ratio to account for worst-case conditions: soft ground, wet surfaces, partial machine loading asymmetry. The 610 N\u00b7m brake at i=86 provides 52,460 N\u00b7m per drive \u2014 a safety factor of approximately 3.4\u00d7 for the same machine and gradient. This additional margin is the engineering rationale for the 610 N\u00b7m specification, not a physical necessity for the highest ratios where the brake hold is already far in excess of any parking requirement. If your machine and gradient calculation shows that 530 N\u00b7m would be adequate with the required safety factor at your minimum operating ratio, Korea Ever-Power can advise whether EP-SE410T3 is a more appropriate specification \u2014 same-day calculation, no charge. For fleet applications where the drive selection boundary between EP-SE410T3 and EP-SE413T3 affects a significant number of machines, Korea Ever-Power can provide a tabulated comparison for multiple machine weight and gradient scenarios simultaneously, enabling a fleet-level design decision rather than a unit-by-unit calculation.<\/p>\n<\/div>\n

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\u0915\u094d\u092f\u0942<\/span>Oil volume, first-change procedure, and condition monitoring for EP-SE413T3?<\/h3>\n

EP-SE413T3 contains approximately 15.0\u201322.0 litres of gear oil depending on ratio configuration and motor adapter \u2014 confirm exact fill volume from the Korea Ever-Power dimensional drawing for your specific configuration. First oil change at 150 operating hours is critical: the triple-stage gear train generates wear particles from all three stages simultaneously during run-in, and these must be removed before accumulating in bearings. Drain while warm (20+ minutes drain time), refill with fresh API GL-5 oil of the same grade and viscosity. Subsequent changes: 1,000 hours or annually. For condition monitoring: at this machine scale, 100 ml oil samples at each 500-hour interval for ICP elemental analysis (iron, chromium, molybdenum particle levels) provide early warning of stage-specific wear before it progresses to a field failure. Korea Ever-Power can provide reference elemental baseline ranges for new EP-SE413T3 units to calibrate your condition monitoring programme. This proactive approach, combined with the stage-specific spare parts availability, is the most cost-effective maintenance strategy for EP-SE413T3 in high-value mining and crane applications. For new installations, Korea Ever-Power recommends establishing baseline elemental levels at the first oil change at 150 hours while the unit is in known good condition, then tracking deviations from this baseline at subsequent 500-hour intervals. A 30\u201350% increase in iron particle level relative to baseline without corresponding increases in chromium or molybdenum typically indicates housing or bearing wear rather than gear wear, narrowing the inspection scope before any disassembly is planned.<\/p>\n<\/div>\n

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\u0915\u094d\u092f\u0942<\/span>Is EP-SE413T3 a direct replacement for Rexroth GFT or Bonfiglioli 700C units in the 60,000 N\u00b7m class?<\/h3>\n

For triple-stage units in the 60,000 N\u00b7m torque class with ratio range overlapping i=86\u2013172, EP-SE413T3 is dimensionally cross-referenced against the equivalent Rexroth GFT and Bonfiglioli 700C models by Korea Ever-Power before any order. The cross-reference covers spindle bore, drum OD, sprocket BCD, hydraulic port thread sizes and positions, motor interface spigot \u2014 against your specific legacy model number and ratio code. At this torque class, there may be multiple GFT or 700C configurations (different ratio codes, different axial lengths), and the cross-reference confirms exactly which EP-SE413T3 configuration matches the specific incumbent drive you are replacing. Provide the full model number including ratio code, and Korea Ever-Power returns the same-day cross-reference with any dimensional notes flagged explicitly. Rexroth and Bonfiglioli are trademarks of their respective owners, cited for dimensional reference only.<\/em><\/p>\n<\/div>\n<\/div>\n<\/section>\n

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Specify EP-SE413T3 \u2014 Ratio, Brake Adequacy, and Dimensional Fit Confirmed Before Order<\/h2>\n

Provide machine weight, maximum gradient, motor specification, target travel speed, and incumbent drive model. Korea Ever-Power returns ratio selection from i=86\u2013172, brake adequacy calculation (including safety factor), and dimensional match \u2014 same day.<\/p>\n

60,000 N\u00b7m \u00b7 i=86\u2013172 \u00b7 Triple-Stage T3 \u00b7 610 N\u00b7m spring brake (SE series max) \u00b7 >94% \u00b7 \u221225\u00b0C to +90\u00b0C \u00b7 ~420 kg<\/p>\n

Request Quote \u2014 EP-SE413T3 \u2192
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 <\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"

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\u2605 60,000 N\u00b7m, Same 420 kg as SE410T3 \u2014 The Engineering Behind the Extra 10 kN\u00b7m<\/div>\n

The EP-SE410T3 track drive planetary gearbox \u00a0delivers 50,000 N\u00b7m at approximately 420 kg dry weight. EP-SE413T3 delivers 60,000 N\u00b7m at the same approximate weight class \u2014 20% more torque from the same nodular cast iron housing. The engineering explanation lies in the ratio range: EP-SE413T3’s ratio starts at i=86 (vs i=62 for SE410T3). A higher minimum ratio means each of the three epicyclic stages can be configured more uniformly \u2014 no stage needs to produce a very small ratio to accommodate the low end of a wide speed range. This more uniform three-stage load distribution allows higher final output torque without requiring a larger housing cross-section. The tradeoff is that EP-SE413T3 has no fast-travel capability below i=86 \u2014 but the 500\u2013700+ tonne machines it serves do not travel fast anyway. At i=86 with a 3,500 rpm motor and 600 mm sprocket radius, the maximum travel speed is approximately 1.5 km\/h, which is already at the practical upper limit for this machine class.<\/p>\n<\/div>","protected":false},"featured_media":842,"comment_status":"open","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_brand":[],"product_cat":[966],"product_tag":[],"class_list":["post-835","product","type-product","status-publish","has-post-thumbnail","product_cat-track-drive-planetary-gearbox","first","instock","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/planetary-gearboxes.com\/hi\/wp-json\/wp\/v2\/product\/835","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/planetary-gearboxes.com\/hi\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/planetary-gearboxes.com\/hi\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/planetary-gearboxes.com\/hi\/wp-json\/wp\/v2\/comments?post=835"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/planetary-gearboxes.com\/hi\/wp-json\/wp\/v2\/media\/842"}],"wp:attachment":[{"href":"https:\/\/planetary-gearboxes.com\/hi\/wp-json\/wp\/v2\/media?parent=835"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/planetary-gearboxes.com\/hi\/wp-json\/wp\/v2\/product_brand?post=835"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/planetary-gearboxes.com\/hi\/wp-json\/wp\/v2\/product_cat?post=835"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/planetary-gearboxes.com\/hi\/wp-json\/wp\/v2\/product_tag?post=835"}],"curies":[{"name":"\u0921\u092c\u094d\u0932\u094d\u092f\u0942\u092a\u0940","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}