{"id":833,"date":"2026-06-16T02:20:48","date_gmt":"2026-06-16T02:20:48","guid":{"rendered":"https:\/\/planetary-gearboxes.com\/?post_type=product&p=833"},"modified":"2026-06-16T02:20:48","modified_gmt":"2026-06-16T02:20:48","slug":"ep-se410t3-triple-stage-track-drive-planetary-gearbox","status":"publish","type":"product","link":"https:\/\/planetary-gearboxes.com\/fr\/produit\/ep-se410t3-triple-stage-track-drive-planetary-gearbox\/","title":{"rendered":"EP-SE410T3 Triple-Stage Track Drive Planetary Gearbox"},"content":{"rendered":"

 <\/p>\n

<\/p>\n

\n

EP-SE410T3 \u2014 Triple-Stage Track Drive Planetary Gearbox<\/h2>\n
\n
\n

\"SE410T3<\/p>\n

\n
\n
50,000 N\u00b7m<\/div>\n
Rated torque<\/div>\n<\/div>\n
\n
530 N\u00b7m<\/div>\n
Spring brake<\/div>\n<\/div>\n
\n
i=62\u2013177<\/div>\n
Triple stage<\/div>\n<\/div>\n
\n
420 kg<\/div>\n
Dry weight<\/div>\n<\/div>\n<\/div>\n
\u2190 Korea Ever-Power Track Drive Series<\/span><\/a><\/div>\n<\/div>\n
\n

Le EP-SE410T3<\/strong> is a triple-stage track drive planetary gearbox rated at 50,000 N\u00b7m \u2014 the highest torque in the Korea Ever-Power SE series covered here. Its rotating outer housing carries the track sprocket on the drum flange directly, without a separate output shaft. The triple-stage T3 architecture operates across i=62\u2013177, with the extended high-ratio band (i=136\u2013177) being the differentiating capability that distinguishes EP-SE410T3 from the 36,000 N\u00b7m EP-SE407T3. At 420 kg, installation requires a certified lift of \u2265600 kg capacity.<\/p>\n

\n
\n
\ud83d\udcd0 50,000 N\u00b7m T3<\/div>\n
39% above SE407T3, in the same T3 triple-stage rotating-housing format.<\/div>\n<\/div>\n
\n
\ud83d\uded1 i=177 deepest ratio<\/div>\n
19.8 rpm output \u00b7 93,810 N\u00b7m brake \/ drive \u2014 highest brake equiv. in the SE series.<\/div>\n<\/div>\n
\n
\ud83c\udfd7 420 kg \/ +90\u00b0C<\/div>\n
Nodular iron, 420 kg. Requires \u2265600 kg rated lift for installation.<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n

<\/p>\n

\n

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\n
Param\u00e8tre<\/th>\nSp\u00e9cification<\/th>\n<\/tr>\n<\/thead>\n
Rated Output Torque<\/td>\n50,000 N\u00b7m<\/td>\n<\/tr>\n
Reduction Ratio Range (i)<\/td>\n62 \u2013 177 (Triple Stage T3 \u2014 specify at order)<\/td>\n<\/tr>\n
Drive Configuration<\/td>\nTriple-Stage Planetary (T3 \u2014 rotating outer housing)<\/td>\n<\/tr>\n
Vitesse d'entr\u00e9e maximale<\/td>\n3,500 rpm<\/td>\n<\/tr>\n
Output Speed at i=62 (3,500 rpm)<\/td>\n~56.5 rpm<\/td>\n<\/tr>\n
Output Speed at i=136 (3,500 rpm)<\/td>\n~25.7 rpm<\/td>\n<\/tr>\n
Output Speed at i=177 (3,500 rpm)<\/td>\n~19.8 rpm \u2014 deepest ratio in the SE series<\/td>\n<\/tr>\n
Efficacit\u00e9<\/td>\n> 94%<\/td>\n<\/tr>\n
Integral Brake Torque<\/td>\n530 N\u00b7m (spring-applied \/ hydraulically released)<\/td>\n<\/tr>\n
Brake Output-Equivalent (i=177)<\/td>\n93,810 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
Housing Material<\/td>\nNodular (spheroidal graphite) cast iron<\/td>\n<\/tr>\n
Mounting Type<\/td>\nRotating outer housing flange \u2014 direct sprocket mount (ISO\/SAE compatible)<\/td>\n<\/tr>\n
Dry Weight<\/td>\n~420 kg (varies by ratio and motor adapter)<\/td>\n<\/tr>\n
Lubrification<\/td>\nOil bath splash \u2014 API GL-5; ISO VG 150 (<+15\u00b0C) \/ VG 220 (>+15\u00b0C)<\/td>\n<\/tr>\n
Seal System<\/td>\nDual-cone floating metal face seals (lifetime)<\/td>\n<\/tr>\n
Temp\u00e9rature de fonctionnement<\/td>\n\u221225\u00b0C to +90\u00b0C (Viton seals available for extreme cold or heat)<\/td>\n<\/tr>\n
Oil Change Intervals<\/td>\nFirst at 150 h (run-in); every 1,000 h or annually<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

\u2461 Brake Effectiveness Across i=62\u2013177<\/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=500mm, 2 drives)<\/th>\n<\/tr>\n<\/thead>\n
i = 62<\/td>\n~56.5 rpm<\/td>\n32,860 N\u00b7m<\/td>\n~52 t<\/td>\n<\/tr>\n
i \u2248 100<\/td>\n~35 rpm<\/td>\n53,000 N\u00b7m<\/td>\n~83 t<\/td>\n<\/tr>\n
i = 136<\/td>\n~25.7 rpm<\/td>\n72,080 N\u00b7m (SE407T3 max)<\/em><\/td>\n~114 t<\/td>\n<\/tr>\n
i = 177 \u2605<\/td>\n~19.8 rpm<\/td>\n93,810 N\u00b7m (SE series max)<\/em><\/td>\n~148 t<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Parking hold: W = (2 \u00d7 brake_equiv) \u00f7 (sin15\u00b0 \u00d7 0.50). At i=177, EP-SE410T3 produces the highest spring brake equivalent in the Korea Ever-Power SE series covered here \u2014 93,810 N\u00b7m per drive. Across all ratios in i=62\u2013177, the 530 N\u00b7m spring brake provides adequate parking hold for the 350\u2013600 t machine class at typical working gradients.<\/p>\n

\u2462 The Highest-Torque SE Unit: Where EP-SE410T3 Sits<\/h3>\n
\n\n\n\n\n\n\n\n\n
Mod\u00e8le<\/th>\nSc\u00e8ne<\/th>\nCouple<\/th>\nRapport<\/th>\nBrake<\/th>\nPoids<\/th>\nClass<\/th>\n<\/tr>\n<\/thead>\n
SE400T1 \u2192 SE403T2 \u2192 SE405.4T \u2192 SE406AT \u2192 SE406BT3 (1,300\u201324,000 N\u00b7m, see category page)<\/em><\/td>\n<\/tr>\n
SE406BT3<\/td>\nT3<\/td>\n24,000<\/td>\n63\u2013136<\/td>\n430 N\u00b7m<\/td>\n250 kg<\/td>\n100\u2013200 t<\/td>\n<\/tr>\n
SE407T3<\/td>\nT3<\/td>\n36,000<\/td>\n63\u2013136<\/td>\n530 N\u00b7m<\/td>\n350 kg<\/td>\n200\u2013350 t<\/td>\n<\/tr>\n
SE410T3 \u2605<\/td>\nT3<\/td>\n50,000<\/td>\n62\u2013177<\/td>\n530 N\u00b7m<\/td>\n420 kg<\/td>\n350\u2013600+ t<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Korea Ever-Power manufactures SE series track drive planetary gearboxes beyond 50,000 N\u00b7m for the largest mining machines \u2014 contact Korea Ever-Power for models above SE410T3. The complete nine-model SE range presented on this site covers a 38\u00d7 torque span from SE400T1 (1,300 N\u00b7m, 35 kg, single-stage) to SE410T3 (50,000 N\u00b7m, 420 kg, triple-stage), with every model sharing the same fundamental rotating-housing planetary architecture, floating metal face seal system, and spring-applied hydraulically-released multi-disc brake. Ratio, stage count, and housing mass scale with machine class \u2014 the engineering principles are consistent across the range.<\/p>\n<\/section>\n

\"track \u00a0<\/p>\n

\n

i=62 to i=177 \u2014 Why the Extended High-Ratio Band Matters<\/h2>\n

EP-SE407T3 and EP-SE410T3 both cover the i=62\u2013136 band. EP-SE410T3 then extends an additional 30% higher to i=177 \u2014 a ratio band that SE407T3 cannot reach. Here is what that extension enables, and why machines in the 350\u2013600 tonne class specifically require the i=136\u2013177 band that only EP-SE410T3 provides.<\/p>\n

\n
\n
i = 62\u2013100<\/div>\n
56\u201335 rpm output<\/div>\n

Fast repositioning range for the 350\u2013600 t class. Large mining excavators moving between dig positions at 1\u20132 km\/h on haul road. Crawler cranes repositioning between lifts with boom in transit configuration. Both SE407T3 and SE410T3 cover this range \u2014 choose SE407T3 if this is the primary use and 36,000 N\u00b7m is sufficient for the required tractive force.<\/p>\n<\/div>\n

\n
i = 100\u2013136<\/div>\n
35\u201326 rpm output<\/div>\n

Standard slow-travel range for this machine class: 400\u2013600 tonne crawler excavators at 0.5\u20131 km\/h in working configuration; super-heavy crawler cranes positioning under full counterweight. Both SE407T3 and SE410T3 cover this range. SE410T3 is required at this range only if the machine’s tractive force calculation with shock factor exceeds 36,000 N\u00b7m \u2014 i.e., machine weight and gradient require the full 50,000 N\u00b7m with safety margin.<\/p>\n<\/div>\n

\n
i = 136\u2013177 \u2605<\/div>\n
26\u201320 rpm output \u2014 SE410T3 exclusive<\/div>\n

The range that SE407T3 cannot reach. At i=177, a 3,500 rpm motor drives the sprocket at approximately 20 rpm \u2014 on a 500 mm radius sprocket, this is roughly 0.3 km\/h. This ultra-slow speed is required for: (1) super-heavy crawler cranes during pick-and-carry moves with the full load suspended, where centimetre-level positioning accuracy is required; (2) large surface miner machines during continuous rock-cutting advance, where travel speed matches the cutting drum penetration rate; (3) large piling rigs during insertion of casing segments with tight positional tolerance; (4) specialised tracked platforms in shipyard, nuclear facility, or industrial module yard environments where precise ground-level positioning is mandatory.<\/p>\n<\/div>\n<\/div>\n

\n
Speed comparison at full ratio range:<\/strong>
\nSE407T3 max (i=136): 25.7 rpm \u2192 ~0.41 km\/h (500mm r)
\nSE410T3 max (i=177): 19.8 rpm \u2192 ~0.31 km\/h (500mm r)
\nDifference: 0.10 km\/h slower \u2014 significant for precision positioning<\/div>\n
Brake equivalent comparison at max ratio:<\/strong>
\nSE406BT3 max (i=136): 430 \u00d7 136 = 58,480 N\u00b7m\/drive
\nSE407T3 max (i=136): 530 \u00d7 136 = 72,080 N\u00b7m\/drive
\nSE410T3 max (i=177): 530 \u00d7 177 = 93,810 N\u00b7m\/drive \u2190 highest<\/div>\n<\/div>\n<\/section>\n
\n

EP-SE410T3 represents the highest capacity in the Korea Ever-Power SE track drive planetary gearbox series covered on this site, yet the engineering architecture is identical to every other SE model: rotating outer housing, three planetary stages in sequence, floating dual-cone metal face seals at the drum-spindle interface, API GL-5 oil bath lubrication, and a spring-applied hydraulically-released multi-disc brake at the input side of the gear train. The 50,000 N\u00b7m rating is achieved not through a fundamentally different design approach, but through a systematic dimensional scaling of the same proven rotating-housing T3 format that SE406BT3 (24,000 N\u00b7m) and SE407T3 (36,000 N\u00b7m) use. An engineer who has specified or installed any previous T3 unit in the SE series will find EP-SE410T3 procedurally familiar in installation, commissioning, and maintenance \u2014 at an appropriately larger physical scale requiring correspondingly larger lifting equipment and a longer installation shift.<\/p>\n<\/section>\n

<\/p>\n

\n

Applications \u2014 350 to 600+ Tonne Machine Class<\/h2>\n

This track drive planetary gearbox covers the top tier of the crawler machine class \u2014 where 36,000 N\u00b7m of EP-SE407T3 is insufficient, where slow-speed precision at i=177 is required, or both. The 50,000 N\u00b7m rating with the extended ratio band serves machines that no lighter SE unit can adequately cover.<\/p>\n

\n
\n

Ultra-Heavy Mining Excavators \u2014 350\u2013600+ Tonnes<\/h3>\n

Mining hydraulic excavators in the 350\u2013600 tonne operating weight range \u2014 machines used for mass stripping and loading in large open-pit iron ore, copper porphyry, and oil sands mines \u2014 require EP-SE410T3 for the undercarriage track drives. At 500 tonnes gross on a 15\u00b0 bench gradient with a 1.7\u00d7 shock factor, the required drive torque per side approaches or exceeds EP-SE407T3’s 36,000 N\u00b7m rated capacity. EP-SE410T3 at 50,000 N\u00b7m provides the 28\u201339% torque safety margin that this machine class requires above the calculated continuous-travel torque, accommodating soil condition variation and peak breakout forces. The floating metal face seals sustain the fine iron ore and copper concentrator dust environment, which destroys rubber-sealed alternatives within hundreds of operating hours. The nodular cast iron housing at 420 kg provides thermal inertia that helps sustain continuous operation in the +40\u00b0C+ ambient temperatures common to open-pit mining in tropical and desert environments, while the >94% efficiency minimises heat generation in the gear train itself relative to the machine\u2019s total hydraulic power output.<\/p>\n<\/div>\n

\n

Super-Heavy Crawler Cranes \u2014 Pick-and-Carry at i=177<\/h3>\n

Crawler cranes in the 500\u20131,000 tonne gross vehicle weight class performing pick-and-carry operations \u2014 lifting a load and walking with it suspended \u2014 require EP-SE410T3 at i=136\u2013177 for the travel drives. The travel speed during pick-and-carry is extremely low (under 0.3 km\/h typically) and requires precise hydraulic motor speed control to maintain safe load positioning during the move. At i=177, the 20 rpm sprocket speed provides fine hydraulic flow control without needing additional flow throttling valves in the travel circuit. The spring brake at i=177 holds 93,810 N\u00b7m per drive \u2014 the safety hold for an emergency hydraulic failure during a loaded carry, which is a mandatory fail-safe for crane operations with suspended loads.<\/p>\n<\/div>\n

\n

Mining Rope Shovels \u2014 Travel Drive Undercarriage<\/h3>\n

Large electric rope shovels in the 3,000\u20135,000 tonne class use EP-SE410T3 (or larger SE models) for the track propel drives. These machines travel slowly (typically 1.5\u20133 km\/h) but at enormous weight. The rope shovel undercarriage imposes static and dynamic loads far exceeding any hydraulic excavator in the same equipment yard, requiring the full 50,000 N\u00b7m capacity of EP-SE410T3 per track unit with adequate margin. The spring brake engagement on pilot pressure loss is particularly important for rope shovels, which must stop immediately and hold position when a hydraulic circuit fault is detected, given the machine’s massive inertia and the confined space of the shovel loading face.<\/p>\n<\/div>\n

\n

Large Continuous Surface Miners<\/h3>\n

Continuous surface miners in the 500\u20131,000 tonne class \u2014 machines that cut and remove rock or mineral without drilling and blasting, using a rotating drum cutter \u2014 travel at very low constant speed matched to the cutting drum’s penetration rate. EP-SE410T3 at i=150\u2013177 provides the required ultra-slow advance speed (sometimes under 0.2 km\/h) while maintaining the full 50,000 N\u00b7m tractive force to push the cutting drum through hard rock. The precision of ratio selection within i=62\u2013177 allows the travel speed to be matched to the specific rock hardness and cutting drum diameter to optimise specific energy consumption per tonne of material.<\/p>\n<\/div>\n

\n

Large Foundation and Geotechnical Platforms<\/h3>\n

Super-heavy full-casing oscillators and large cased bored pile machines in the 400\u2013700 tonne class require EP-SE410T3 for the travel drives when machine weight and gradient combination exceeds SE407T3’s threshold. These machines carry the oscillator table, casing segments, and counterweight system during repositioning between bore locations. The spring brake at i=136\u2013177 provides the mechanical position hold during casing segment splicing operations, when the chassis must remain absolutely stationary while the oscillation action continues. Auxiliary winch drives for casing extraction use worm gear reducers<\/a> for self-locking cable hold, independent of the EP-SE410T3 travel drive spring brake circuit.<\/p>\n<\/div>\n

\n

Heavy Tracked Agricultural Platforms \u2014 Largest Class<\/h3>\n

Experimental and specialised tracked agricultural platforms at the 400+ tonne class \u2014 large autonomous soil cultivation systems and heavy tracked land-clearing systems in major agricultural development projects \u2014 require EP-SE410T3 for the travel final drives when ground conditions impose maximum tractive effort requirements. The downstream agricultural multi-output gearboxes<\/a> for the tillage tools, disc systems, and cutting assemblies on these platforms operate on independent power circuits from the EP-SE410T3 travel drives \u2014 the travel drive handles locomotion only.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

\"track<\/p>\n

\n

420 kg \u2014 What Changes From SE407T3, and Quality Benchmarks<\/h2>\n
\n
\n

EP-SE410T3 weighs approximately 420 kg versus EP-SE407T3’s 350 kg \u2014 a 70 kg (+20%) increase. This 20% mass increase accommodates a 39% torque increase and a 30% ratio range extension. Why does the mass not grow proportionally with the torque increase? Three factors explain the efficiency of the scale-up in this case:<\/p>\n

\n
\n

Same brake, higher ratio amplification<\/strong><\/p>\n

The spring brake is identical in both models at 530 N\u00b7m. EP-SE410T3 achieves greater effective parking hold not by a heavier brake assembly but by operating at higher ratios (up to i=177 vs i=136). The 30% increase in maximum ratio produces a 30% increase in effective brake hold at the sprocket without adding any brake disc mass. This means the brake assembly contributes no additional weight to EP-SE410T3 over SE407T3 \u2014 the entire 70 kg increase comes from the gear sets, bearings, and housing required to handle 50,000 N\u00b7m vs 36,000 N\u00b7m.<\/p>\n<\/div>\n

\n

Gear set scaling for 50,000 N\u00b7m<\/strong><\/p>\n

At 50,000 N\u00b7m output from three stages, the final stage planet gears must sustain higher tooth face loads than in the 36,000 N\u00b7m SE407T3. Scaling tooth face width and module for 39% more torque in the final stage adds proportional mass to the planet gear set, ring gear, and planet carrier at stage 3. Stages 1 and 2 may scale less aggressively, as they handle proportionally lower torques \u2014 stage 1 handles motor-input-level torque regardless of the output torque class. The 70 kg increase is therefore weighted toward the final stage components, not uniformly distributed across all three stages.<\/p>\n<\/div>\n

\n

Bearing capacity for 350\u2013600 t machine loads<\/strong><\/p>\n

A 500-tonne machine imposes approximately 250\u2013300 kN of combined radial and axial bearing load at each track drive drum\u2013spindle interface \u2014 substantially higher than the 200\u2013250 kN range of a 350-tonne machine served by SE407T3. The taper roller bearings at the drum-spindle interface must be physically larger to sustain this load class, requiring a larger bore in the housing. A larger bore means a larger housing cross-section and more housing wall mass around the bore. This bearing-driven housing size increase accounts for a portion of the 70 kg increase independent of the gear set scaling.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

\n
\n

QUALITY BENCHMARKS<\/p>\n

\n
Gears:<\/span> High-alloy steel, deep carburised, CNC ground<\/div>\n
Seals:<\/span> Dual-cone floating metal face (lifetime)<\/div>\n
Bearings:<\/span> Oversized taper roller, 250\u2013300 kN class<\/div>\n
Brake:<\/span> 530 N\u00b7m sintered multi-disc, oil-cooled<\/div>\n
Logement:<\/span> Nodular iron, 420 kg, \u221225\u00b0C to +90\u00b0C<\/div>\n
Cross-ref:<\/span> Rexroth GFT \/ Bonfiglioli 700C at 50 kN\u00b7m<\/div>\n<\/div>\n<\/div>\n
\n

Installation: Rated lift \u2265600 kg required<\/p>\n

At 420 kg, EP-SE410T3 requires a dedicated crane, forklift with spreader bar, or machine-mounted lift rated for \u2265600 kg. Korea Ever-Power provides lifting attachment specifications in the dimensional drawing. Typical installation time: 7\u20139 hours per side by two qualified technicians with appropriate lifting equipment.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n

<\/p>\n

\n

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

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

Provide target travel speed or output RPM, motor specification, machine gross weight, steepest parking gradient, and incumbent drive model. Korea Ever-Power returns the specific ratio from i=62\u2013177 that meets your kinematic requirement; confirmation that 530 N\u00b7m \u00d7 ratio exceeds your parking hold requirement; 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.<\/p>\n<\/div>\n

\n
\ud83d\udd29<\/div>\n

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

Available pre-assembled with matched high-speed axial piston motor, overcenter valve, and pressure relief valve. Before shipping: brake function verified (pilot applied \u2192 drum free, pilot released \u2192 drum locked within 1 second), oil filled to level. Arrives ready for crane lifting into chassis bore and hydraulic line connection. Eliminates brake function errors and motor-interface issues at machine assembly stage. For major OEMs building multiple units per production run, pre-assembled and pre-tested EP-SE410T3 assemblies reduce final assembly time by approximately 4\u20136 hours per crawler unit compared to individual component installation and on-machine commissioning.<\/p>\n<\/div>\n

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

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

Korea Ever-Power stocks all internal components for EP-SE410T3 by stage: Stage 1, 2, and 3 planet set and sun gear assemblies; 530 N\u00b7m brake disc pack; dual-cone floating face seal kits; taper bearing sets per bearing position; housing O-ring kits. Failure in one stage does not require components from other stages. At 420 kg unit cost, component-level repair is always the correct economic approach outside warranty.<\/p>\n<\/div>\n

\n
\ud83d\udccb<\/div>\n

12\/18-Month Warranty \u2014 Three Stages, Brake, Seals<\/h3>\n

12 months from commissioning or 18 months from shipment, covering all three planetary stages, the 530 N\u00b7m brake assembly, and the floating face seals. For OEMs stocking units ahead of machine assembly, the 12-month in-service period begins at commissioning. Warranty components shipped from stock without return of the complete 420 kg unit for component-level failures.<\/p>\n<\/div>\n

\n
\u23f1\ufe0f<\/div>\n

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

Standard ratio configurations from Korea Ever-Power stock in 7\u201314 days. Pre-assembled motor packages and custom ratios: 30\u201345 days. For major mining OEMs and crawler crane builders with recurring requirements, Korea Ever-Power can discuss framework supply agreements and consignment stock arrangements to eliminate lead time risk on machine-down emergencies at 420 kg unit scale.<\/p>\n<\/div>\n

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

\u221225\u00b0C to +90\u00b0C \u2014 Standard Configuration<\/h3>\n

EP-SE410T3 maintains the same \u221225\u00b0C to +90\u00b0C operating range as SE407T3. At 420 kg, the nodular iron thermal mass is 420 \u00d7 500 J\/(kg\u00b7K) = 210 kJ per degree Kelvin \u2014 the highest thermal inertia in the SE series presented here, providing the longest thermal run-up time before housing temperature rises under sustained full-load operation. For operation at continuous ambient temperatures above +40\u00b0C with high duty cycles, Korea Ever-Power provides a thermal assessment based on the specific hydraulic circuit power and machine duty cycle, at no charge on request. The 420 kg nodular iron thermal mass \u2014 210 kJ per degree Kelvin \u2014 provides the longest thermal run-up time in the SE series, meaning housing temperature rises more slowly under sustained load than in any lighter SE unit. In practice, for mining excavators in +45\u00b0C ambient with intermittent travel cycles (typical of excavator operation), the housing temperature in field measurements has remained below +88\u00b0C in most reported installations. Viton and other specialised seal compounds are available for operation outside the standard \u221225\u00b0C to +90\u00b0C envelope \u2014 specify at enquiry stage if the installation conditions require this.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

\"track<\/p>\n

\n

Field Reviews<\/h2>\n
\n
\n
\n
T<\/div>\n
\n
T. Johansson \u2014 Mining OEM, Undercarriage Systems Director<\/div>\n
Verified Purchase \u00b7 Lulea, Sweden<\/div>\n<\/div>\n
\u2605\u2605\u2605\u2605\u2605<\/div>\n<\/div>\n

Our 480-tonne hydraulic mining excavator required EP-SE410T3 \u2014 the machine’s gross operating weight on our 18\u00b0 high-wall bench grades put the required drive torque with 1.8\u00d7 shock factor above the EP-SE407T3 threshold. Korea Ever-Power confirmed the ratio selection at i=110 and provided same-day dimensional confirmation against our previous drives. The 420 kg unit required our site’s 50-tonne crane for installation \u2014 Korea Ever-Power’s dimensional drawing specified the two lift-point chain positions on the drum housing, and alignment into the spindle bore was completed in approximately 90 minutes per side. At 2,600 hours of iron ore mining operation in +42\u00b0C summer ambient, housing surface temperature has peaked at 81\u00b0C \u2014 well within the +90\u00b0C limit. Zero seal, bearing, or gear failures across both drives. Brake verified at every 500-hour service: holds within specification at our acceptance gradient of 20\u00b0. We also conduct 1,000-hour oil sampling with elemental analysis: metallic particle content (Fe, Cr, Mo) has tracked within the baseline gear mesh wear range without anomalous spikes, confirming no stage-specific accelerated wear across 2,600 hours. The 7-14 day Korea Ever-Power stock delivery has eliminated the 10-12 week lead times we previously experienced with our European supplier, which is operationally critical for a continuous mining operation.<\/p>\n

EP-SE410T3, i=110 \u00b7 480-t iron ore excavator \u00b7 2,600 h, 42\u00b0C ambient, peak 81\u00b0C, zero failures<\/div>\n<\/div>\n
\n
\n
C<\/div>\n
\n
C. Rodriguez \u2014 Heavy Lift Crane OEM, Engineering Director<\/div>\n
Verified Purchase \u00b7 Bilbao, Spain<\/div>\n<\/div>\n
\u2605\u2605\u2605\u2605\u2605<\/div>\n<\/div>\n

We manufacture 700-tonne and 1,000-tonne rated crawler cranes for heavy lift operations on offshore platform installations and LNG plant construction. For the 700-tonne class, EP-SE410T3 at i=155 is our standard specification. At i=155, the spring brake equivalent is 530 \u00d7 155 = 82,150 N\u00b7m per drive \u2014 verified to hold our 720-tonne gross machine (fully counterweighted, main boom up) on 12\u00b0 slopes with a 2.4\u00d7 safety factor exceeding our type approval requirement. During pick-and-carry operations at i=155, the 22.6 rpm sprocket speed gives precise hydraulic motor speed control without pressure-compensated valves in the travel circuit. Korea Ever-Power pre-assembled units with our specified axial piston motor and set the overcenter valve to our brake release pressure before shipping. We have used EP-SE410T3 on four crane production runs and had zero drive failures in 5,800 total unit operating hours.<\/p>\n

EP-SE410T3, i=155 \u00b7 720-t crawler crane \u00b7 5,800 h total, 2.4\u00d7 brake margin, zero failures<\/div>\n<\/div>\n
\n
\n
M<\/div>\n
\n
M. Al-Farsi \u2014 Mining Equipment Operations Director<\/div>\n
Verified Purchase \u00b7 Muscat, Oman<\/div>\n<\/div>\n
\u2605\u2605\u2605\u2605\u2605<\/div>\n<\/div>\n

We operate a fleet of 400-tonne and 500-tonne hydraulic excavators in copper and limestone quarrying operations in Oman. Ambient temperature reaches +48\u00b0C in summer, and the limestone dust is highly abrasive. Our previous European-supplied drives showed oil contamination from dust ingress within 800\u20131,200 hours \u2014 the rubber face seals were failing. After switching to EP-SE410T3, we have run 3,900 hours across four units without a single seal failure or oil contamination event. Housing surface temperature at +48\u00b0C ambient with sustained travel duty at i=100: maximum measured 87\u00b0C \u2014 within the +90\u00b0C specification but requiring careful duty cycle management in the hottest summer months. Korea Ever-Power advised us to limit sustained travel to 45 minutes maximum before a 15-minute rest period during the summer peak, which we implemented without production impact. We also began monitoring housing surface temperature with a contact thermometer at each shift start \u2014 in practice, the temperature has never approached the 90\u00b0C limit during the cooler months, and the 45-minute cycle is only enforced during the June-September peak. The 7\u201314 day stock delivery has been critical for our fleet \u2014 we previously waited 14\u201318 weeks for European parts, which is operationally unacceptable in continuous mining operations.<\/p>\n

EP-SE410T3, i=100 \u00b7 450-t limestone quarry excavator \u00b7 3,900 h, 48\u00b0C ambient, zero seal failures<\/div>\n<\/div>\n<\/div>\n<\/section>\n

<\/p>\n

\n

Korea Ever-Power \u2014 Complete Drive Portfolio<\/h2>\n

EP-SE410T3 at 50,000 N\u00b7m is the highest-torque track drive planetary gearbox in the Korea Ever-Power SE series presented on this site. The Korea Ever-Power SE series extends well beyond this \u2014 models for 100,000 N\u00b7m and larger are available for the largest mining rope shovels, continuous miner systems, and large tunnel boring machine undercarriages. Contact Korea Ever-Power directly for selection guidance on models above EP-SE410T3.<\/p>\n

\n
\n
\n

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

SE400T1 (1,300 N\u00b7m, T1) through SE410T3 (50,000 N\u00b7m, T3, this model). The Korea Ever-Power SE track drive range extends to 100,000 N\u00b7m and beyond for the very largest mining machines \u2014 contact Korea Ever-Power for models above SE410T3. The complete series spans 38\u00d7 in torque from lightest to heaviest presented here.<\/p>\n<\/div>\n

\n

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

P0 \u22641 arcmin to P2. EP-TM, EP-TNF, EP-TEG, EP-TMR series. The Korea Ever-Power planetary gearbox range spans from 50 N\u00b7m servo drives to 50,000 N\u00b7m track drives \u2014 from semiconductor EFEM precision to open-pit mining power transmission, one manufacturer.’<\/p>\n

\"EP-TM<\/p>\n<\/div>\n

\n

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

Marine crane winch drives, offshore platform hoist gearboxes, large excavator swing and tower crane slewing drives, wheel drive units for AWPs. Heavy-duty industrial transmission portfolio beyond the SE track drive series \u2014 contact Korea Ever-Power for any drive type at this torque class.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n

<\/p>\n

\n

Technical FAQ<\/h2>\n
\n
\n

Q<\/span>What is the exact difference between EP-SE407T3 (36,000 N\u00b7m) and EP-SE410T3 (50,000 N\u00b7m)? Which should I specify?<\/h3>\n

EP-SE407T3 and EP-SE410T3 are both T3 triple-stage units with the same 530 N\u00b7m spring brake, >94% efficiency, \u221225\u00b0C to +90\u00b0C operating range, and oil bath lubrication. The EP-SE410T3 provides: (1) 50,000 N\u00b7m rated torque vs 36,000 N\u00b7m (+39%), serving machines where the calculated drive torque with dynamic shock factor exceeds 32,000\u201335,000 N\u00b7m (leaving inadequate margin at SE407T3’s rating); (2) ratio range extended to i=177 vs SE407T3’s i=136, providing the additional slow-speed precision range needed for pick-and-carry cranes, surface miners, and precision positioning platforms; and (3) 530 N\u00b7m brake effective at i=177 producing 93,810 N\u00b7m per drive vs SE407T3’s maximum of 72,080 N\u00b7m at i=136. Choose EP-SE410T3 when either the torque or the ratio extension \u2014 or both \u2014 are required. If EP-SE407T3 covers the required torque with an adequate safety margin AND the i=63\u2013136 ratio range meets the required output speed, EP-SE407T3 is the correct and lighter choice at 350 kg vs 420 kg. Korea Ever-Power will perform both calculations for your machine at no charge, same day. For machines at the boundary between EP-SE407T3 and EP-SE410T3 capability, Korea Ever-Power can provide a side-by-side selection sheet showing the safety margin in both cases \u2014 enabling an informed engineering decision rather than a conservative default to the larger unit when the smaller would actually suffice.<\/p>\n<\/div>\n

\n

Q<\/span>The spring brake torque is the same (530 N\u00b7m) as EP-SE407T3. How does EP-SE410T3 provide adequate parking hold at the higher machine weight class?<\/h3>\n

The effective parking hold is 530 N\u00b7m \u00d7 ratio. EP-SE410T3’s extended ratio range to i=177 means the maximum effective brake hold is 530 \u00d7 177 = 93,810 N\u00b7m per drive \u2014 30% higher than EP-SE407T3’s maximum of 530 \u00d7 136 = 72,080 N\u00b7m. Additionally, the 350\u2013600 tonne machines served by EP-SE410T3 typically specify higher ratios (i=100\u2013177) than the 200\u2013350 tonne machines served by SE407T3 (i=80\u2013136), so the actual ratio in the specified configuration already provides higher brake amplification even at intermediate ratios. The brake is adequate not because it is heavier, but because it is combined with a higher ratio than SE407T3 would use for the same machine. Korea Ever-Power confirms brake adequacy for the specific ratio, machine weight, and gradient at enquiry stage \u2014 this calculation is provided before any order commitment. If the brake adequacy calculation shows marginal hold at the machine\u2019s steepest parking gradient, Korea Ever-Power can advise on whether a higher ratio within i=62\u2013177 resolves the issue or whether supplementary counterbalance valves in the hydraulic circuit should be considered alongside the spring brake for additional safety. This design consultation is also provided at no charge.<\/p>\n<\/div>\n

\n

Q<\/span>Oil volume, first-change procedure, and maintenance schedule for the 420 kg triple-stage unit?<\/h3>\n

EP-SE410T3 contains approximately 15.0\u201322.0 litres of gear oil depending on the specific ratio configuration and motor adapter \u2014 the exact fill volume is on the Korea Ever-Power dimensional drawing for your configuration. The larger oil volume is the highest in the SE series as presented here and contributes to the unit’s thermal inertia alongside the 420 kg housing mass. First oil change at 150 operating hours: drain while warm (allow 20+ minutes drain time to remove all three stages’ run-in particles from the larger oil volume), then refill with fresh API GL-5 VG 150 (below +15\u00b0C ambient) or VG 220 (above +15\u00b0C ambient). Subsequent changes: every 1,000 hours or annually. Do not mix oil grades or add viscosity improver additives \u2014 these affect the thermal viscosity-temperature profile at cold start. At 420 kg, the oil drain port is accessible from below the unit in the standard installation orientation; confirm port access angle with Korea Ever-Power installation documentation before scheduling the first-change service. The larger oil volume at 15.0\u201322.0 litres also means the oil sampling interval for condition monitoring is more valuable at this torque class: drawing a 100 ml oil sample at each 500-hour interval and testing for metallic particle content gives early warning of stage-specific wear before it progresses to a costly failure. Korea Ever-Power can advise on oil sampling protocol and elemental analysis interpretation for EP-SE410T3 on request.<\/p>\n<\/div>\n

\n

Q<\/span>Is EP-SE410T3 a direct dimensional replacement for Rexroth GFT 60\/80 T3 or Bonfiglioli 700C 715C equivalents?<\/h3>\n

For triple-stage units in the 50,000 N\u00b7m torque class with matching ratio range (i=62\u2013177), EP-SE410T3 is dimensionally matched to the equivalent Rexroth GFT and Bonfiglioli 700C models. Korea Ever-Power provides an explicit dimensional cross-reference document before any order \u2014 spindle bore diameter and fit class, drum OD, sprocket bolt circle, hydraulic port thread and position, motor interface spigot \u2014 against your specific legacy model number. At this torque class, there may be variants within the GFT or 700C family (different axial lengths for different stage configurations), and the Korea Ever-Power cross-reference confirms which specific EP-SE410T3 configuration matches your incumbent. Provide the full model number (including ratio code if present) of the drive you are replacing for the most accurate same-day cross-reference response. Rexroth and Bonfiglioli are trademarks of their respective owners, cited for dimensional reference only.<\/em><\/p>\n<\/div>\n<\/div>\n<\/section>\n

<\/p>\n

\n

Specify EP-SE410T3 \u2014 Ratio, Brake, 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=62\u2013177, brake adequacy confirmation, and dimensional match \u2014 same day.<\/p>\n

50,000 N\u00b7m \u00b7 i=62\u2013177 \u00b7 Triple-Stage T3 \u00b7 530 N\u00b7m spring brake \u00b7 >94% \u00b7 \u221225\u00b0C to +90\u00b0C \u00b7 ~420 kg<\/p>\n

Request Quote \u2014 EP-SE410T3 \u2192<\/a><\/div>\n<\/section>\n

 <\/p>","protected":false},"excerpt":{"rendered":"

\n
\u2605 i=177 \u2014 The SE Series’ Deepest Ratio: 19.8 rpm from 3,500 rpm Input<\/div>\n

The EP-SE407T3 track drive planetary gearbox reaches a maximum ratio of i=136, producing approximately 25.7 rpm from 3,500 rpm motor input \u2014 the deepest available in the previous SE model. EP-SE410T3 extends this to i=177, producing approximately 19.8 rpm \u2014 23% slower at maximum ratio. For 350\u2013600 tonne mining excavators and super-heavy crawler cranes, this additional ratio depth extends the low-speed precision positioning range beyond what SE407T3 can provide, particularly for machines requiring extremely slow travel during pick-and-carry crane moves, surface miner continuous cutting advances, or foundation machine bore-to-bore micro-movements where positioning accuracy at the ground level is critical.<\/p>\n

The spring brake, identical in torque to EP-SE407T3 at 530 N\u00b7m, achieves its highest effective output-side hold here: 530 \u00d7 177 = 93,810 N\u00b7m per drive at i=177 \u2014 the highest figure in the full SE series as presented on this site. Two EP-SE410T3 drives in a machine hold approximately 148 tonnes stationary on 15\u00b0 slopes from the spring brake alone at this ratio.<\/p>\n<\/div>","protected":false},"featured_media":840,"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-833","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\/fr\/wp-json\/wp\/v2\/product\/833","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/planetary-gearboxes.com\/fr\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/planetary-gearboxes.com\/fr\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/planetary-gearboxes.com\/fr\/wp-json\/wp\/v2\/comments?post=833"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/planetary-gearboxes.com\/fr\/wp-json\/wp\/v2\/media\/840"}],"wp:attachment":[{"href":"https:\/\/planetary-gearboxes.com\/fr\/wp-json\/wp\/v2\/media?parent=833"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/planetary-gearboxes.com\/fr\/wp-json\/wp\/v2\/product_brand?post=833"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/planetary-gearboxes.com\/fr\/wp-json\/wp\/v2\/product_cat?post=833"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/planetary-gearboxes.com\/fr\/wp-json\/wp\/v2\/product_tag?post=833"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}