{"id":774,"date":"2026-06-12T06:48:55","date_gmt":"2026-06-12T06:48:55","guid":{"rendered":"https:\/\/planetary-gearboxes.com\/?post_type=product&p=774"},"modified":"2026-06-12T06:52:27","modified_gmt":"2026-06-12T06:52:27","slug":"ep-tm-helical-planetary-gearbox","status":"publish","type":"product","link":"https:\/\/planetary-gearboxes.com\/ceb\/product\/ep-tm-helical-planetary-gearbox\/","title":{"rendered":"EP-TM Precision Helical Planetary Gearbox"},"content":{"rendered":"
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<\/p>\n

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EP-TM Series \u2014 Precision Helical Planetary Gearbox | Frames 042\u2013220 mm, P0\/P1\/P2, up to 2,000 N\u00b7m<\/h2>\n
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<\/p>\n

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

\n
\n
\u22641 arcmin<\/div>\n
P0 Backlash<\/div>\n<\/div>\n
\n
\u226597%<\/div>\n
L1 Efficiency<\/div>\n<\/div>\n
\n
20,000 ka oras<\/div>\n
Kinabuhi sa Serbisyo<\/div>\n<\/div>\n
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7 Frames<\/div>\n
042\u2013220 mm<\/div>\n<\/div>\n<\/div>\n
\u2190 Pag-browse sa Tanang Planetary Gearbox Series<\/a><\/div>\n<\/div>\n

<\/p>\n

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Ang EP-TM precision helical planetary gearbox<\/strong> is the core servo transmission for Korean manufacturing \u2014 packaging machines, CNC 5-axis centres, welding robots, semiconductor equipment, and solar trackers all specify EP-TM as their standard servo gearbox. Seven frame sizes (042\u2013220 mm) cover output torques from 17 N\u00b7m to 2,000 N\u00b7m with gear ratios i=3 to i=100 in single and dual stage configurations. Three backlash grades \u2014 P0 (\u22641 arcmin), P1 (\u22643 arcmin), P2 (\u22645 arcmin) \u2014 serve every Korean precision positioning requirement.<\/p>\n

Precision helical planetary gearbox \u00b7 Direct servo motor coupling \u00b7 IEC \/ NEMA universal adapter<\/p>\n

\n
\n
\ud83d\udd27 Helical Precision Gears<\/div>\n
Contact ratio >2.0 \u2014 smooth, quiet, long-life gear mesh vs spur alternatives.<\/div>\n<\/div>\n
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\ud83d\udd12 Sealed for Life<\/div>\n
Synthetic grease, IP65 standard \u2014 no re-greasing for 20,000 hours.<\/div>\n<\/div>\n
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\ud83c\udfaf IEC\/NEMA Universal<\/div>\n
Compatible with all Korean servo brands \u2014 Yaskawa, Mitsubishi, Fanuc, Panasonic.<\/div>\n<\/div>\n
<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n
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EP-TM Series \u2014 Complete Technical Specifications<\/h2>\n

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

<\/p>\n

\u2460 Rated Output Torque, Speed & Backlash \u2014 All 7 Frames<\/h3>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Parametro<\/th>\nYunit<\/th>\nEntablado<\/th>\nTM042<\/th>\nTM060<\/th>\nTM090<\/th>\nTM115<\/th>\nTM142<\/th>\nTM180<\/th>\nTM220<\/th>\n<\/tr>\n<\/thead>\n
Rated output torque T\u2082\u2099 (N\u00b7m)<\/td>\nN\u00b7m<\/td>\nL1 (i=3\u201310)<\/td>\n17\u201322<\/td>\n50\u201360<\/td>\n130\u2013160<\/td>\n208\u2013330<\/td>\n342\u2013650<\/td>\n588\u20131,200<\/td>\n1,140\u20132,000<\/td>\n<\/tr>\n
L2 (i=12\u2013100)<\/td>\n17\u201322<\/td>\n50\u201360<\/td>\n130\u2013160<\/td>\n208\u2013330<\/td>\n342\u2013650<\/td>\n588\u20131,200<\/td>\n1,140\u20132,000<\/td>\n<\/tr>\n
Max output torque T\u2082max<\/td>\nN\u00b7m<\/td>\nL1\/L2<\/td>\n3 \u00d7 T\u2082\u2099 (emergency \/ acceleration)<\/td>\n<\/tr>\n
Rated input speed n\u2099<\/td>\nrpm<\/td>\nL1\/L2<\/td>\n5,000<\/td>\n5,000<\/td>\n4,000<\/td>\n4,000<\/td>\n3,000<\/td>\n3,000<\/td>\n2,000<\/td>\n<\/tr>\n
Max input speed n\u2081max<\/td>\nrpm<\/td>\nL1\/L2<\/td>\n10,000<\/td>\n10,000<\/td>\n8,000<\/td>\n8,000<\/td>\n6,000<\/td>\n6,000<\/td>\n4,000<\/td>\n<\/tr>\n
Ultra-precision P0 backlash<\/td>\narcmin<\/td>\nL1<\/td>\n\u2264 1 arcmin<\/td>\n<\/tr>\n
Precision P1 backlash<\/td>\narcmin<\/td>\nL1 \/ L2<\/td>\n\u2264 3 arcmin (L1) \u00a0\/\u00a0 \u2264 5 arcmin (L2)<\/td>\n<\/tr>\n
Standard P2 backlash<\/td>\narcmin<\/td>\nL1 \/ L2<\/td>\n\u2264 5 arcmin (L1) \u00a0\/\u00a0 \u2264 7 arcmin (L2)<\/td>\n<\/tr>\n
Pagkagahi sa torsyon<\/td>\nN\u00b7m\/arcmin<\/td>\nL1<\/td>\n3<\/td>\n7<\/td>\n14<\/td>\n25<\/td>\n50<\/td>\n145<\/td>\n225<\/td>\n<\/tr>\n
Permissible radial force Fr<\/sub><\/td>\nN<\/td>\nL1\/L2<\/td>\n780<\/td>\n1,530<\/td>\n3,250<\/td>\n6,700<\/td>\n9,400<\/td>\n14,800<\/td>\n50,000<\/td>\n<\/tr>\n
Permissible axial force Fa<\/sub><\/td>\nN<\/td>\nL1\/L2<\/td>\n390<\/td>\n765<\/td>\n1,625<\/td>\n3,350<\/td>\n4,700<\/td>\n7,250<\/td>\n25,000<\/td>\n<\/tr>\n
Kaepektibo \u03b7<\/td>\n%<\/td>\nL1 \/ L2<\/td>\n\u2265 97% (L1) \u00a0\/\u00a0 \u2265 94% (L2)<\/td>\n<\/tr>\n
Weight (approx.)<\/td>\nkilos<\/td>\nL1<\/td>\n0.5<\/td>\n1.3<\/td>\n3.7<\/td>\n7.8<\/td>\n14.5<\/td>\n29<\/td>\n48<\/td>\n<\/tr>\n
Noise (n=3,000 rpm, no-load)<\/td>\ndB(A)<\/td>\nL1\/L2<\/td>\n\u226456<\/td>\n\u226458<\/td>\n\u226460<\/td>\n\u226463<\/td>\n\u226465<\/td>\n\u226467<\/td>\n\u226470<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

<\/p>\n

\n
Temperatura sa Pag-operate<\/strong>
\n\u221210\u00b0C to +90\u00b0C<\/div>\n
Protection<\/strong>
\nIP65 standard<\/div>\n
Lubrication<\/strong>
\nSealed grease \u2014 lifetime<\/div>\n
Mounting<\/strong>
\nAny orientation<\/div>\n
Output shaft<\/strong>
\nS1 round \/ S2 keyed<\/div>\n
Kinabuhi sa serbisyo<\/strong>
\n20,000+ hours S1<\/div>\n<\/div>\n

<\/p>\n

\u2461 Available Gear Ratios \u2014 Single & Dual Stage<\/h3>\n
\n\n\n\n\n\n\n
Entablado<\/th>\nAvailable Ratios i<\/th>\nKaepektibo<\/th>\nP1 Backlash<\/th>\nLabing Maayo Para sa<\/th>\n<\/tr>\n<\/thead>\n
L1 Single-Stage<\/td>\n3 \u00b7 4 \u00b7 5 \u00b7 6 \u00b7 7 \u00b7 8 \u00b7 10<\/td>\n\u226597%<\/td>\n\u22643\u2032<\/td>\nPackaging, energy-critical, short axial length<\/td>\n<\/tr>\n
L2 Dual-Stage<\/td>\n12 \u00b7 15 \u00b7 20 \u00b7 25 \u00b7 30 \u00b7 35 \u00b7 40 \u00b7 50 \u00b7 60 \u00b7 70 \u00b7 80 \u00b7 100<\/td>\n\u226594%<\/td>\n\u22645\u2032<\/td>\nRobot joints, CNC rotary axes, inertia matching<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/section>\n

<\/p>\n

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Why EP-TM Helical Gears Outperform Spur Planetary in Korean Servo Applications<\/h2>\n

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

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\u2460 Helical Precision Gears \u2014 Contact Ratio >2.0<\/div>\n

Helical tooth geometry keeps multiple teeth simultaneously engaged \u2014 contact ratio exceeds 2.0 versus 1.1\u20131.4 for spur gears. Torque transmission is continuous rather than pulsed, reducing vibration at the root cause rather than masking it. Gear tooth surface fatigue life is extended because each tooth carries a fraction of the total load for a longer engagement arc. The quantifiable result: EP-TM noise is 10\u201315 dB lower than spur planetary units at the same frame size and rated speed.<\/p>\n<\/div>\n

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\u2461 Precision Planet Carrier \u2014 Wide-Span Bearing Support<\/div>\n

The planet carrier and output shaft are machined as a single integrated component. Front and rear bearings are positioned at maximum span within the housing \u2014 this wide bearing span is the primary structural determinant of output shaft rigidity, radial runout, and tilting moment resistance. Planet pin bore locations are precision-drilled to maintain equal planet load sharing within \u00b15%, preventing premature fatigue of individual planet gear sets in high-cycle Korean packaging and robot applications.<\/p>\n<\/div>\n

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\u2462 Hot-Forged Ring Gear Housing \u2014 One-Piece Integrity<\/div>\n

Ring gear and housing body are a single hot-forged alloy steel component \u2014 no bolted-together assembly, no interface where concentricity errors accumulate. All critical surfaces (ring gear ID, output bearing seats, motor flange face) are machined in a single setup. The one-piece forging achieves DIN Class 5\u20136 gear quality across every production unit, confirmed on the large-format Osaka Seimitsu gear measurement system before shipment.<\/p>\n<\/div>\n

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\u2463 Dual-Bolt Symmetric Input Clamp \u2014 Zero Coupling Slip<\/div>\n

Two diametrically opposed clamping bolts apply symmetric force on the motor shaft \u2014 no shaft deflection, no runout induced by asymmetric clamping. The result is zero-backlash power transmission from motor shaft to sun gear at all operating conditions, including the 10,000 rpm maximum input speed. Korean packaging machine engineers who previously experienced motor shaft slippage under high-cycle reversing loads consistently specify EP-TM’s dual-bolt clamp as the resolution.<\/p>\n<\/div>\n

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\u2464 Universal Servo Adapter Plate \u2014 Same-Day Compatibility<\/div>\n

Front adapter plate machined to IEC and NEMA standard motor flange dimensions for all seven frame sizes. Compatible with Yaskawa Sigma-7, Mitsubishi HG-SR, Panasonic MINAS A6, Siemens SIMOTICS S, Fanuc \u03b1i-S, and all Korean servo brands without modification. Adapter plate drawings provided same business day \u2014 Korean engineers confirm motor compatibility before ordering with zero risk of incorrect fit.<\/p>\n<\/div>\n

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\u2465 Lifetime Sealed Grease \u2014 IP65, Any Orientation<\/div>\n

Factory-filled with premium synthetic grease (NYOGEL 792D) and permanently sealed at both input and output. No field re-greasing, no oil changes, no scheduled lubrication maintenance for 20,000+ hours in S1 continuous operation. The only required maintenance activity is annual backlash measurement against the delivery certificate baseline \u2014 the one-page checklist from our maintenance guide. IP65 standard, \u221210\u00b0C to +90\u00b0C, any mounting orientation.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

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Installation Guide \u2014 EP-TM Series<\/h2>\n
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1<\/div>\n

Confirm Model Code & Motor Compatibility<\/strong><\/p>\n<\/div>\n

Verify the EP-TM model code: frame size (042\u2013220), ratio (L1: 3\u201310 \/ L2: 12\u2013100), shaft type (S1 round \/ S2 keyed), precision grade (P0\/P1\/P2), and motor interface code. Confirm motor shaft diameter and pilot register diameter match the adapter plate drawing before unpacking. Korea Ever-Power provides dimensional drawings same business day for any model\/frame combination.<\/p>\n<\/div>\n

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\n
2<\/div>\n

Motor Shaft Insertion \u2014 Symmetric Clamping<\/strong><\/p>\n<\/div>\n

Clean motor shaft and input bore. Insert motor shaft until the motor face contacts the adapter plate squarely \u2014 no axial gap. Tighten the two clamping bolts in alternating half-turns to maintain symmetric load. Final torque: M4=2.5 N\u00b7m, M5=5 N\u00b7m, M6=9 N\u00b7m. Verify motor shaft does not protrude beyond the sun gear engagement point.<\/p>\n<\/div>\n

\n
\n
3<\/div>\n

Output Shaft \/ Machine Interface<\/strong><\/p>\n<\/div>\n

For keyed shaft (S2): install coupling half key with correct key fit (clearance fit for smooth engagement). For round shaft (S1): use friction clamp coupling, apply correct bore-to-shaft fit (H7\/h6 recommended). Mounting surface flatness must be \u22640.02 mm. Do not use impact tools on the output shaft \u2014 the output bearing pre-load cannot be restored after shock loading.<\/p>\n<\/div>\n

\n
\n
4<\/div>\n

Machine Mounting \u2014 Flange Face Registration<\/strong><\/p>\n<\/div>\n

Align the gearbox housing pilot register with the machine bore \u2014 close-running fit. Install 4\u00d7 housing mounting bolts and torque evenly in a cross pattern. Verify there is no bending moment applied to the housing from the mounting surface \u2014 all four mounting bolt contact surfaces must be coplanar within 0.02 mm before tightening.<\/p>\n<\/div>\n

\n
\n
5<\/div>\n

Radial Load Verification<\/strong><\/p>\n<\/div>\n

Confirm the applied radial load at the output shaft centre (x = L\/2\u00b7xL) does not exceed the permissible Fr<\/sub> from the specification table. For belt, chain, or gear-loaded outputs with off-centre loading, apply the position factor Kb. See the radial load calculation guide for the full methodology. Exceeding Fr<\/sub> reduces output bearing L10 life proportionally.<\/p>\n<\/div>\n

\n
\n
6<\/div>\n

No-Load Run-In & Baseline Backlash Record<\/strong><\/p>\n<\/div>\n

Run at no-load at \u226450% rated input speed for 30 minutes. Monitor housing temperature \u2014 confirm it stabilises below ambient + 40\u00b0C. After run-in, measure output shaft backlash using the delivery certificate method (apply \u00b13% T\u2082\u2099 torque, read angular displacement). Record this as the installation baseline. Compare annually against the delivery certificate value per the maintenance guide.<\/p>\n<\/div>\n<\/div>\n

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\u26a0 Critical Cautions:<\/strong> Never apply axial force to the output shaft during load installation \u2014 use a shaft puller, not a hammer. Do not exceed maximum input speed specifications even momentarily \u2014 bearing cage damage at overspeed is not covered under warranty. Do not mix lubricants \u2014 the sealed grease fill is specification-correct for the full rated life; adding oil or grease changes the lubrication chemistry.<\/p>\n<\/div>\n

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\u2714 Zero Maintenance for 20,000 Hours:<\/strong> The factory-sealed EP-TM requires no re-greasing, no oil changes, and no scheduled lubrication attention. The only maintenance is annual backlash measurement (5-minute procedure) and external visual inspection. IP65 housing withstands Korean factory washdown and outdoor exposure without additional sealing.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

\"mga
\n<\/p>\n

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EP-TM Internal Architecture \u2014 Five Precision-Engineered Components<\/h2>\n

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

\n
\n

Every Korea Ever-Power EP-TM is built from five precision subsystems. Understanding the design rationale behind each helps Korean engineers evaluate not just the delivered specification, but the mechanism by which that specification is achieved and sustained across 20,000 hours.<\/p>\n

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\u2460 Precision Helical Gears<\/strong><\/p>\n

Case-hardened alloy steel, helical tooth geometry, contact ratio >2.0. Ground to DIN Class 5\u20136 after hardening. The helical angle introduces a small axial thrust load on the sun gear bearing \u2014 Korea Ever-Power’s bearing pre-load selection accounts for this within the published axial force limits.<\/p>\n<\/div>\n

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\u2461 Precision Planet Carrier<\/strong><\/p>\n

Carrier and output shaft machined as one piece. Wide-span front and rear bearings \u2014 this bearing span is the primary determinant of output shaft rigidity and radial runout. Planet pin bore locations precision-bored to \u00b15% load sharing tolerance.<\/p>\n<\/div>\n

\n

\u2462 Forged Ring Gear Housing<\/strong><\/p>\n

Ring gear and housing body hot-forged from one alloy steel billet. All critical surfaces machined in a single setup \u2014 eliminating concentricity errors from assembly. DIN Class 5\u20136 achievable because the reference datum never changes between gear cutting and bearing seat grinding.<\/p>\n<\/div>\n

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\u2463 Dual-Clamp Input Shaft<\/strong><\/p>\n

Two diametrically opposed clamping screws apply symmetric balanced clamp force \u2014 no shaft deflection, no runout during tightening. Rated for 10,000 rpm maximum input speed with full torque. Korean packaging engineers consistently identify this as the resolution to motor shaft slippage under high-cycle reversing loads.<\/p>\n<\/div>\n

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\u2464 Universal Servo Adapter Plate<\/strong><\/p>\n

Precision-machined alloy plate with IEC standard motor flange dimensions. Pilot bore and bolt circle held to h6\/H7 for clean register fit. Adapter plates are individually specified per motor model \u2014 changeable independently of the gearbox body.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

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 <\/p>\n

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INERTIA J (kg\u00b7cm\u00b2) \u2014 L1 SINGLE STAGE<\/p>\n

TM042: 0.03\u20130.16
\nTM060: 0.03\u20130.45
\nTM090: 0.03\u20132.62
\nTM115: 0.03\u20137.25
\nTM142: 0.03\u201322.75
\nTM180: 0.03\u201350.97<\/div>\n

For inertia matching calculation, see inertia matching guide \u2192<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n

<\/p>\n

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How to Read an EP-TM Model Code<\/h2>\n
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EP-TM \u00a0090 \u00a0\u2013 \u00a0025 \u00a0\u2013 \u00a0S2 \u00a0\u2013 \u00a0P1 \u00a0( \u00a0\u00a0\u00a0 )<\/div>\n
\n
\n
EP-TM<\/div>\n
Series \u2014 helical precision
\nplanetary gearbox<\/div>\n<\/div>\n
\n
090<\/div>\n
Frame size (mm)
\n042\/060\/090\/115\/142\/180\/220<\/div>\n<\/div>\n
\n
025<\/div>\n
Gear ratio i
\nL1: 3\u201310 \u00b7 L2: 12\u2013100<\/div>\n<\/div>\n
\n
S2<\/div>\n
Output shaft type
\nS1=round \u00b7 S2=keyed<\/div>\n<\/div>\n
\n
P1<\/div>\n
Grado sa katukma
\nP0\u22641\u2032 \u00b7 P1\u22643\u2032 \u00b7 P2\u22645\u2032<\/div>\n<\/div>\n
\n
( \u00a0 )<\/div>\n
Motor interface code
\nspecify motor model at order<\/div>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

Motor Input Flange Dimensions \u2014 EP-TM Single-Stage L1<\/h3>\n
\n\n\n\n\n\n\n\n\n\n\n\n
Frame<\/th>\nPilot \u00d8 (C1)<\/th>\nBolt circle \/ Thread (C2)<\/th>\nInput shaft \u00d8 (C3)<\/th>\nDepth C4<\/th>\nTotal length C9<\/th>\n<\/tr>\n<\/thead>\n
TM042<\/td>\n\u00d845 \/ \u00d846<\/td>\n4-M3\u00d78 \/ 4-M4\u00d710<\/td>\n\u00d88<\/td>\n27.5<\/td>\n91.5 mm<\/td>\n<\/tr>\n
TM060<\/td>\n\u00d866.7 \/ \u00d870 \/ \u00d890<\/td>\n4-M4\u00d710 \/ M5\u00d712 \/ M6\u00d714<\/td>\n\u00d88 \/ \u00d811 \/ \u00d819<\/td>\n34<\/td>\n116 mm<\/td>\n<\/tr>\n
TM090<\/td>\n\u00d890 \/ \u00d8100 \/ \u00d8115 \/ \u00d8145<\/td>\nM5\u00d712\u2013M8\u00d720<\/td>\n\u00d819 \/ \u00d816 \/ \u00d819,22<\/td>\n42<\/td>\n147 mm<\/td>\n<\/tr>\n
TM115<\/td>\n\u00d8145 \/ \u00d8200<\/td>\n4-M8\u00d720 \/ 4-M12\u00d728<\/td>\n\u00d819,22 \/ \u00d835<\/td>\n64<\/td>\n199 mm<\/td>\n<\/tr>\n
TM142<\/td>\n\u00d8145 \/ \u00d8200<\/td>\n4-M8\u00d720 \/ 4-M12\u00d728<\/td>\n\u00d822 \/ \u00d835<\/td>\n72<\/td>\n252 mm<\/td>\n<\/tr>\n
TM180<\/td>\n\u00d855 \/ \u00d895 (custom)<\/td>\n4-M12\u00d730<\/td>\n\u00d819 h6<\/td>\n85<\/td>\n287 mm<\/td>\n<\/tr>\n
TM220<\/td>\n\u00d875 \/ \u00d8165 (custom)<\/td>\n4-M12\u00d730<\/td>\n\u00d820 h6<\/td>\n120<\/td>\n364.5 mm<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

TM180\/TM220 input dimensions customisable \u2014 confirm at time of order. Confirm all dimensions against Korea Ever-Power dimensional drawing before finalising machine design.<\/p>\n<\/section>\n

<\/p>\n

\n

EP-TM in Korean Industry \u2014 Six Core Application Scenarios<\/h2>\n

\"Korea<\/p>\n

\n
\n

\u2460 Korean Packaging Machine Servo Axes<\/h3>\n

VFFS and HFFS lines in Korea’s Chungcheong and Gyeonggi food packaging clusters use EP-TM090\/115 P1 on cross-seal jaw drives (i=10\u201315) and film pull servo axes (i=5\u20138). The helical gear’s smooth torque delivery is critical on the jaw axis where motor reversal at each cycle must produce zero mechanical impulse \u2014 protecting seal quality at 100+ cycles\/minute. EP-TM090 P1 is Korea’s most-specified jaw axis gearbox by packaging integrators.<\/p>\n<\/div>\n

\n

\u2461 Korean 5-Axis CNC B\/C Rotary Table<\/h3>\n

Doosan Machine Tools, Hwacheon, and DMG Mori Korea specify EP-TM090\/115 P0 (i=50\u2013100, dual-stage) for B and C rotary table axes. The low noise (\u226460\u201363 dB) is valued in Korean machine tool showroom environments; P0 \u22641 arcmin backlash translates directly to angular positioning accuracy for 5-axis contour machining. Motor-dominant J_ratio (i=50 makes load contribution <0.05:1) means B-axis tuning is stable across the full workpiece weight range \u2014 see inertia matching guide.<\/p>\n<\/div>\n

\n

\u2462 Korean Automotive Welding Robot Joints<\/h3>\n

Hyundai-Kia Asan and Ulsan assembly plants use 6-axis welding robots where J1\u2013J3 base\/shoulder\/elbow joints require dual-stage planetary gearboxes at i=25\u201350. EP-TM115\/142 P1 covers 50\u2013150 kg payload Korean welding robot configurations. The 3\u00d7 rated emergency torque specification (T\u2082max) handles the high-cycle clamp\/toggle loads at spot-weld stations without cumulative gear tooth fatigue across 200,000-cycle\/year production volumes.<\/p>\n<\/div>\n

\n

\u2463 Korean IMM Clamp & Ejector Axes<\/h3>\n

Korean injection moulding machine builders (LS Mtron, Woosung Machinery) use EP-TM115\/142 at i=15\u201325 for clamp, ejector, and rotary table axes. Average load fraction 60\u201370% of rated torque matches EP-TM’s efficiency sweet spot (\u226597%). Full axis-by-axis BOM specification for a Korean 5-axis IMM: IMM application guide \u2192<\/p>\n<\/div>\n

\n

\u2464 Korean AGV \/ AMR Differential Drive<\/h3>\n

Samsung SDS and CJ Logistics AMR fleets operating in Incheon and Suwon fulfilment centres use EP-TM042\/060 for compact Mecanum and differential drive wheel hubs. The EP-TM042 (0.5 kg, \u25a142 body) fits within tight wheel corner envelopes where inline motor clearance is the design constraint. Korea Ever-Power supplies ratio-matched pairs (\u22640.01% ratio tolerance certificate) for AMR differential drive axes \u2014 critical for straight-line tracking accuracy.<\/p>\n<\/div>\n

\n

\u2465 Korean Solar Tracker Azimuth Drive<\/h3>\n

Korea’s Jeollanam-do and Jeollabuk-do utility solar farms use EP-TM180\/220 at i=50\u2013100 for horizontal single-axis tracker azimuth slew drives. High radial load capacity (14,800\u201350,000 N) handles wind loading on long tracker arms. Stainless fastener option for coastal salt exposure. IP65 standard. Seasonal angular correction cycles well within the 20,000-hour life budget at tracker duty cycle \u2014 solar tracker application guide \u2192<\/p>\n<\/div>\n<\/div>\n<\/section>\n

\"Testing<\/p>\n

\n

Why Korean Engineers Specify Korea Ever-Power EP-TM<\/h2>\n

 <\/p>\n

\n
\n

\ud83c\udfaf<\/span><\/p>\n

\n

Same-Day Technical Confirmation \u2014 Korean Language<\/h3>\n

Frame size selection, ratio calculation, inertia matching, motor adapter specification \u2014 confirmed in Korean within one business day. Korean procurement teams never need to wait for translated technical documentation or international sales response delays.<\/p>\n<\/div>\n<\/div>\n

\n

\ud83d\udccb<\/span><\/p>\n

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Backlash Measurement Certificate with Every Unit<\/h3>\n

Every EP-TM ships with a factory-measured backlash certificate showing the actual measured value at \u00b13% T\u2082\u2099 preload \u2014 not a nominal grade value. Korean quality engineers use this certificate to verify incoming inspection and as the maintenance baseline for the unit’s 20,000-hour service life.<\/p>\n<\/div>\n<\/div>\n

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\ud83c\udfed<\/span><\/p>\n

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Korean Warehouse Stock \u2014 Same-Week Delivery<\/h3>\n

EP-TM frames 042\u2013142, ratios i=5\/10\/25\/50, P1 and P2 grades held in Korea stock for same-week delivery. EP-TM180\/220, P0 grade, and non-standard ratios: 2\u20134 week production lead time. Korean OEM production schedules never stall on gearbox availability.<\/p>\n<\/div>\n<\/div>\n

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Direct Competitor Replacement \u2014 Dimensional Drawings Provided<\/h3>\n

Korean machines currently running competitor helical planetary gearboxes can switch to EP-TM without machine redesign in most cases. Provide the competitor part number \u2014 Korea Ever-Power confirms dimensional compatibility or identifies the exact adapter plate needed, same day, with dimensional drawing.<\/p>\n<\/div>\n<\/div>\n

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\u26a1<\/span><\/p>\n

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Ratio-Matched AMR\/AGV Pairs \u2014 \u22640.01% Tolerance<\/h3>\n

Korean AMR differential drives require paired gearboxes with matched gear ratios for straight-line tracking accuracy. Korea Ever-Power provides ratio-matched EP-TM042\/060 pairs with \u22640.01% ratio variation and a certificate confirming the measurement \u2014 eliminating the tracking drift that unmatched pairs produce at straight-line traverse speeds above 1.5 m\/s.<\/p>\n<\/div>\n<\/div>\n

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\ud83c\uddf0\ud83c\uddf7<\/span><\/p>\n

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ISO 50001 Energy Documentation \u2014 Korean Format<\/h3>\n

Samsung and Hyundai tier-1 suppliers undergoing ISO 50001 energy audits receive a Korean-language energy saving report for any EP-TM application \u2014 documenting annual kWh saving, \u20a9 saving, CO\u2082 reduction, and payback period versus worm reducers. Meets Korea Energy Agency subsidy application documentation requirements.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n

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\"workshop<\/p>\n

System Integration \u2014 Complementary Products & Accessories<\/h2>\n
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<\/p>\n

\"EP-TM
\n<\/p>\n
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KEY ACCESSORIES \u2014 EP-TM SERIES<\/p>\n

Servo Motor Adapter Plate<\/span>
\nBellows Coupling<\/span>
\nJaw Coupling<\/span>
\nEncoder Bracket<\/span>
\nOutput Shaft Coupling<\/span>
\nBacklash Certificate<\/span><\/div>\n<\/div>\n<\/div>\n

<\/p>\n

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<\/p>\n

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CV Drive Shafts \u2014 Output-Side Torque Transmission<\/h3>\n

When EP-TM output torque must reach a load located at a distance from the gearbox \u2014 gantry cross-beam rack-and-pinion pinions, solar tracker array shafts spanning multiple bays, multi-station conveyor head pulleys \u2014 a constant-velocity drive shaft<\/a> between the gearbox output flange and the load coupling absorbs installation angular misalignment (\u00b13\u20138\u00b0 for standard industrial CV joints) without imposing bending moments on the EP-TM output bearing. A rigid intermediate shaft under the same misalignment conditions transmits a cyclically varying bending moment to the output bearing at twice rotational frequency \u2014 accelerating bearing fatigue and reducing L10 life. CV shafts are the standard complement to EP-TM on Korean laser cutting gantry X-axes and large-format CNC horizontal machining centres where perfect motor-to-rack alignment cannot be guaranteed after machine levelling.<\/p>\n<\/div>\n

<\/p>\n

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Worm Gear Reducers \u2014 Self-Locking & Ultra-High Ratio Stages<\/h3>\n

For applications requiring combined gear ratios above i=100 with self-locking capability \u2014 vertical load-holding axes, rotary indexing table dwell-lock between index events, gravity-loaded linear drives that must hold position under power loss \u2014 a worm gear reducer<\/a> downstream of EP-TM creates a compact two-stage drive system. The EP-TM stage handles the high-speed reduction at high efficiency (\u03b7\u226597% at i=10); the worm stage adds self-locking and the final ratio increment at its characteristically lower efficiency. Verified two-stage calculation: EP-TM at i=10 (\u03b7\u226597%) \u00d7 worm at i=30 (\u03b7\u224855\u201370%) = combined i=300, overall system \u03b7\u224854\u201368%. Where self-locking is not required, EP-TM alone at i=100 dual-stage (\u03b7\u226594%) is the more energy-efficient single-unit solution \u2014 for the full comparison, see the efficiency calculation guide.<\/p>\n<\/div>\n

<\/p>\n

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Agricultural Gearboxes & Multi-Output Power Distribution<\/h3>\n

Modern precision agriculture increasingly replaces fixed-ratio chain and belt drives with servo-controlled planetary reducers at the primary drive stage. GPS-guided seeding heads, variable-rate fertiliser spreaders, and combine harvester header drives all benefit from EP-TM’s position-controlled angular accuracy \u2014 the same servo loop that achieves \u00b11.8 arcsec repeatability in a Korean CNC B-axis controls row spacing to within \u00b15 mm at 10 km\/h field speed. Downstream agricultural gearboxes then distribute this controlled rotational motion to multiple output shafts \u2014 fan, auger, seed meter, and reel drives \u2014 from the single EP-TM output. EP-TM180\/220 at i=50\u2013100 covers the 600\u20131,200 N\u00b7m torque range of typical agricultural main drive axes, with IP65 sealing and stainless fastener options for field exposure environments.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n

 <\/p>\n

Customer Reviews & Field Performance<\/h2>\n

<\/p>\n

\n
\n
4.9<\/div>\n
\u2605\u2605\u2605\u2605\u2605<\/div>\n
Based on 120+ verified orders<\/div>\n<\/div>\n
\n
\n
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5 \u2605<\/span><\/p>\n

\n
<\/div>\n<\/div>\n

91%<\/span><\/p>\n<\/div>\n

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4 \u2605<\/span><\/p>\n

\n
<\/div>\n<\/div>\n

7%<\/span><\/p>\n<\/div>\n

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\u22643 \u2605<\/span><\/p>\n

\n
<\/div>\n<\/div>\n

2%<\/span><\/p>\n<\/div>\n<\/div>\n<\/div>\n

\n
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99%<\/div>\n
Mag-order pag-usab<\/div>\n<\/div>\n
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<0.5%<\/div>\n
Rate sa kapakyasan sa natad<\/div>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

\n
\n
\n
K<\/div>\n
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Kim J. \u2014 Packaging Machine Design Engineer<\/div>\n
Napamatud-an nga Pagpalit \u00b7 Gyeonggi-do, South Korea<\/div>\n<\/div>\n
\u2605\u2605\u2605\u2605\u2605<\/div>\n<\/div>\n

EP-TM090 P1 i=10 single-stage on our VFFS cross-seal jaw servo axis. Previous competitor unit was producing a faint 60 Hz knock at the reversal point \u2014 traced to spur gear engagement impulse. Switched to EP-TM090 helical: knock eliminated at first power-on, seal quality improved measured 4% across 3,000 pouches. Now 14 months in production at 3 shifts per day, zero backlash growth versus delivery certificate. Korea Ever-Power confirmed the direct-fit replacement for our Yaskawa SGM7J-04A motor in 2 hours.<\/p>\n

EP-TM090, i=10, P1 \u00b7 VFFS jaw axis \u00b7 60 Hz knock eliminated, 14 months zero issues<\/div>\n<\/div>\n
\n
\n
L<\/div>\n
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Lee S. \u2014 CNC Machine Tool Development Engineer<\/div>\n
Napamatud-an nga Pagpalit \u00b7 Changwon, South Korea<\/div>\n<\/div>\n
\u2605\u2605\u2605\u2605\u2605<\/div>\n<\/div>\n

EP-TM115 P0 i=50 dual-stage for the B-axis of our compact 5-axis VMC. Angular positioning accuracy measured at \u00b11.8 arcsec repeatability at the output flange \u2014 well inside our 5 arcsec customer spec. Inertia ratio J_ratio = 0.04:1 means the axis tunes in under 5 minutes and is completely stable across 500 kg workpiece weight variation. Korea Ever-Power provided the inertia calculation report in Korean for our customer documentation package.<\/p>\n

EP-TM115, P0, i=50 \u00b7 5-axis VMC B-axis \u00b7 \u00b11.8 arcsec measured, J_ratio = 0.04:1<\/div>\n<\/div>\n
\n
\n
P<\/div>\n
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Park H. \u2014 Robot Systems Integrator<\/div>\n
Napamatud-an nga Pagpalit \u00b7 Ulsan, South Korea<\/div>\n<\/div>\n
\u2605\u2605\u2605\u2605\u2605<\/div>\n<\/div>\n

Specifying EP-TM142 P1 i=25 on J2 shoulder joint of welding robots for Hyundai Asan assembly line upgrade. 48 units over two years \u2014 zero warranty returns. The 3\u00d7 T\u2082max specification (rated 342 N\u00b7m, max 1,026 N\u00b7m) handles the spot-weld clamp peak loads without requiring oversizing to the next frame. Korea Ever-Power delivered all 48 units with matched delivery certificates within 0.3 arcmin unit-to-unit variation \u2014 our quality system logs this data.<\/p>\n

EP-TM142, P1, i=25 \u00b7 Hyundai welding robot J2 \u00b7 48 units, zero warranty returns<\/div>\n<\/div>\n<\/div>\n
\n

Share your EP-TM application experience.<\/strong> Kontaka ang Korea Ever-Power: sales@planetary-gearboxes.com<\/a><\/p>\n<\/div>\n<\/section>\n

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Frequently Asked Questions \u2014 EP-TM Helical Planetary Gearbox<\/h2>\n
\n
\n

Q<\/span>How do I choose between L1 single-stage and L2 dual-stage for my Korean servo axis?<\/h3>\n

First calculate required ratio: i_required = n_motor_rated \/ n_output_max. If i \u2264 10, L1 single-stage is available and preferred \u2014 \u226597% efficiency and shorter axial length. If i > 10, L2 dual-stage is necessary. For the full five-dimension analysis (efficiency, backlash, axial length, cost, inertia), see the single vs dual stage selection guide. Korea Ever-Power confirms the stage recommendation for your specific application within one business day.<\/p>\n<\/div>\n

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Q<\/span>My Korean packaging machine servo is oscillating and hunting at low speeds. Is this an inertia ratio problem?<\/h3>\n

Oscillation and hunting that does not respond well to increased servo damping is a classic high J_ratio symptom \u2014 typically J_ratio > 10:1 on a positioning axis. Calculate J_ratio = J_load \/ (i\u00b2 \u00d7 J_motor) using the EP-TM inertia values from Module 5. If J_ratio exceeds 10:1, increase the gear ratio: going from i=5 to i=10 reduces reflected load inertia by 4\u00d7. See the full calculation and Korean case studies in the inertia matching guide.<\/p>\n<\/div>\n

\n

Q<\/span>Can I replace a competitor’s helical planetary gearbox with EP-TM without machine redesign?<\/h3>\n

In most cases yes \u2014 with one verification step. Confirm output shaft diameter and keyway, motor adapter pilot bore and bolt circle diameter, and gearbox body length (axial). Korea Ever-Power provides a dimensional drawing for any EP-TM model and frame within one business day. Provide the competitor’s part number \u2014 Korea Ever-Power confirms whether EP-TM is a direct dimensional substitute and specifies the correct adapter plate part number. No charge for this pre-order dimensional confirmation.<\/p>\n<\/div>\n

\n

Q<\/span>What is Korea Ever-Power’s standard delivery lead time for EP-TM units in Korea?<\/h3>\n

Frames 042\u2013142, ratios i=5\/10\/25\/50, P1 and P2 grades: Korea warehouse stock, same-week delivery. EP-TM180\/220, P0 ultra-precision on all frames, and non-standard ratios: 2\u20134 week production lead time. Ratio-matched AMR drive pairs: additional 3\u20135 business days for certified pairing measurement. Same-day delivery confirmation on all in-stock queries by 17:00 KST.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

<\/p>\n

\n

Specify Your EP-TM \u2014 Korea Ever-Power Same-Day Engineering Support<\/h2>\n

Frame selection, ratio calculation, inertia matching, motor adapter confirmation \u2014 Korea Ever-Power delivers the complete EP-TM specification for your Korean application within one business day. All documentation in Korean.<\/p>\n

Request Quote \u2014 EP-TM \u2192
\n<\/a><\/div>\n<\/section>\n<\/div>","protected":false},"excerpt":{"rendered":"
\n
\u2605 Korea Ever-Power’s Flagship Servo Gearbox \u2014 Helical Gears for Korean Precision Motion<\/div>\n

EP-TM’s helical planet gears deliver contact ratio 2\u00d7 higher than spur gears<\/strong> \u2014 translating directly into lower noise (\u226456\u201370 dB), smoother torque, and longer gear life.<\/p>\n<\/div>","protected":false},"featured_media":776,"comment_status":"open","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_brand":[],"product_cat":[963],"product_tag":[],"class_list":["post-774","product","type-product","status-publish","has-post-thumbnail","product_cat-high-precision-planetary-gearbox","first","instock","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/planetary-gearboxes.com\/ceb\/wp-json\/wp\/v2\/product\/774","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/planetary-gearboxes.com\/ceb\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/planetary-gearboxes.com\/ceb\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/planetary-gearboxes.com\/ceb\/wp-json\/wp\/v2\/comments?post=774"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/planetary-gearboxes.com\/ceb\/wp-json\/wp\/v2\/media\/776"}],"wp:attachment":[{"href":"https:\/\/planetary-gearboxes.com\/ceb\/wp-json\/wp\/v2\/media?parent=774"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/planetary-gearboxes.com\/ceb\/wp-json\/wp\/v2\/product_brand?post=774"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/planetary-gearboxes.com\/ceb\/wp-json\/wp\/v2\/product_cat?post=774"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/planetary-gearboxes.com\/ceb\/wp-json\/wp\/v2\/product_tag?post=774"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}