{"id":597,"date":"2026-05-29T02:09:02","date_gmt":"2026-05-29T02:09:02","guid":{"rendered":"https:\/\/planetary-gearboxes.com\/?post_type=product&p=597"},"modified":"2026-05-29T05:59:02","modified_gmt":"2026-05-29T05:59:02","slug":"ep-ah-ahk-new-line-heavy-duty-planetary-gearbox","status":"publish","type":"product","link":"https:\/\/planetary-gearboxes.com\/sr\/\u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\/ep-ah-ahk-new-line-heavy-duty-planetary-gearbox\/","title":{"rendered":"EP-AH \/ EP-AHK Series New Line Heavy-Duty Planetary Gearbox"},"content":{"rendered":"

 <\/p>\n

\n

EP-AH \/ EP-AHK Series \u2014 New Line Heavy-Duty Planetary Gearbox up to 9,585 N\u00b7m<\/h2>\n
\n
\n

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

\n
\n
9,585
\nN\u00b7m<\/div>\n
Max output torque<\/div>\n<\/div>\n
\n
450 mm
\nMax<\/div>\n
Largest inline frame<\/div>\n<\/div>\n
\n
1\u20132′
\n1-stage<\/div>\n
New Line backlash<\/div>\n<\/div>\n
\n
1\u20134
\nStages<\/div>\n
Up to 10,000:1<\/div>\n<\/div>\n<\/div>\n

\n\u2190 Browse All Planetary Gearbox Series
\n<\/a><\/div>\n<\/div>\n
\n
\n
\u2605 New Line \u2014 Where Precision Ends and the Largest Torques Begin<\/div>\n

Every Korea Ever-Power precision series \u2014 AB, AF, AFH, AFR \u2014 reaches a maximum of 3,805 N\u00b7m. The New Line EP-AH\/AHK begins where the precision series ends, delivering up to 9,585 N\u00b7m<\/strong> at body diameters up to 450 mm<\/strong>. The trade-off is backlash: single-stage is 1 to 2 arcmin rather than the \u22641 arcmin achievable at P0 grade in the precision range. For applications where the torque exceeds the precision range but sub-2-arcmin backlash is the specification, New Line is the answer.<\/p>\n<\/div>\n

The EP-AH\/AHK New Line heavy-duty planetary gearbox series<\/strong> covers the torque and frame size range above the Korea Ever-Power precision inline series, with single-stage backlash of 1 to 2 arcmin and up to four gear stages providing reduction ratios from 4:1 to 10,000:1. The inline EP-AH series and the right-angle EP-AHK series \u2014 including the AHKA, AHKB, and AHKC variants \u2014 share the same New Line architecture, spanning eight frame sizes from 064 mm to 450 mm body diameter. Operating temperature is \u221210 \u00b0C to +90 \u00b0C with IP65, the same range as the precision planetary series.<\/p>\n

For applications requiring precision drive performance above 3,805 N\u00b7m \u2014 where the EP-AFH ultra-precision series<\/a> maximum is exceeded \u2014 New Line provides the Korea Ever-Power product that covers this torque tier at 1 to 2 arcmin single-stage backlash, without moving to an entirely different product family.<\/p>\n

\n
\n
\ud83d\udcaa 9,585 N\u00b7m<\/div>\n
Highest output torque in the Korea Ever-Power range.<\/div>\n<\/div>\n
\n
\ud83d\udccf Up to 450 mm<\/div>\n
Largest body frame in the range \u2014 064 to 450 mm.<\/div>\n<\/div>\n
\n
\u2699\ufe0f AH + AHK<\/div>\n
Inline and right-angle in the same New Line architecture.<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n

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The New Line Position \u2014 Between Precision and Economy<\/h2>\n
\n

<\/p>\n

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

KOREA EVER-POWER THREE-TIER RANGE<\/p>\n

\n
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PRECISION LINE<\/div>\n
AB\/AF\/AFH\/AFR \u2022 \u22641\u20135′ \u2022 up to 3,805 N\u00b7m<\/div>\n<\/div>\n
\n
\u2605 NEW LINE (this series)<\/div>\n
AH\/AHK \u2022 1\u20132′ \u2022 up to 9,585 N\u00b7m<\/div>\n<\/div>\n
\n
ECONOMIC LINE<\/div>\n
PE II\/PG II \u2022 6\u20138′ \u2022 up to 459 N\u00b7m<\/div>\n<\/div>\n<\/div>\n

New Line fills the gap: large torques that exceed Precision Line, with better backlash than Economic Line<\/p>\n<\/div>\n<\/div>\n

<\/p>\n

\n

The Korea Ever-Power range comprises three tiers. The Precision Line (AB, AF, AFH, AFR, and related series) achieves P0 \u22641 arcmin backlash but is limited to 3,805 N\u00b7m maximum output torque at up to 240 mm body diameter. The Economic Line (PE II, PG II, and related series) covers up to 459 N\u00b7m with 6 to 8 arcmin single-stage backlash. Between these two tiers, New Line fills the torque gap<\/strong> \u2014 from 24 N\u00b7m up to 9,585 N\u00b7m, with 1 to 2 arcmin single-stage backlash, in body diameters up to 450 mm.<\/p>\n

\n
\n

When New Line Is the Correct Choice \u2014 Torque Above 3,805 N\u00b7m<\/strong><\/p>\n

If your application requires output torque above 3,805 N\u00b7m \u2014 the ceiling of the Korea Ever-Power precision series \u2014 and sub-2-arcmin backlash is acceptable, New Line is the direct answer. This tier applies to heavy industrial machinery: large-diameter rotary tables for steel and shipbuilding, mine conveyor head drives, wind turbine auxiliary drives, and heavy press brake table drives in Korean industry. New Line AH355 and AH450 are the only Korea Ever-Power planetary products in these frame sizes.<\/p>\n<\/div>\n

\n

When New Line Is a Cost-Efficient Alternative \u2014 Precision Not Needed<\/strong><\/p>\n

For applications within the precision series torque range (up to 3,805 N\u00b7m) where the backlash requirement is 1 to 3 arcmin rather than \u22641 arcmin, New Line may provide equivalent functional performance at a lower cost than specifying the precision series P0 or P1 grade. Korean machine builders developing cost-optimised product lines for markets where P0 is not required should evaluate New Line at overlapping frame sizes against the precision series P1 or P2 grade.<\/p>\n<\/div>\n

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When to Stay with the Precision Series \u2014 Sub-1-Arcmin Required<\/strong><\/p>\n

If your application specifies \u22641 arcmin (P0), the precision series is the correct choice regardless of torque level. New Line’s 1 to 2 arcmin single-stage backlash range means it cannot guarantee the \u22641 arcmin that is achievable in the precision series at P0 grade. For servo axes controlling angular position to a tolerance tighter than 2 arcmin, stay with the precision series AB, AF, or AFH.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n

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AH Inline and AHK Right-Angle \u2014 New Line Configuration Overview<\/h2>\n
\n

<\/p>\n

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EP-AH \u2014 Inline (Coaxial) New Line<\/h3>\n

Motor input and output shaft share a common axis \u2014 the same inline geometry as EP-AB, EP-AF, and EP-AFH, scaled up to the New Line torque range. When the application can accommodate an inline drive arrangement and requires torques above 3,805 N\u00b7m or frame sizes above 240 mm, EP-AH is the Korea Ever-Power inline product for that tier.<\/p>\n

Output:<\/strong> Inline coaxial \u00b7 Torque:<\/strong> up to 9,585 N\u00b7m \u00b7 Stages:<\/strong> 1\u20134<\/div>\n<\/div>\n

<\/p>\n

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EP-AHK \/ AHKA \/ AHKB \/ AHKC \u2014 Right-Angle New Line<\/h3>\n

The right-angle variants of New Line \u2014 AHK (two-stage), AHKA (three-stage, high-torque start), AHKB (three-stage, wide torque range), AHKC (additional configuration) \u2014 provide 90-degree output direction at New Line torque and frame size levels. This is the right-angle counterpart to AH, serving heavy industrial applications where a perpendicular motor arrangement is required at torques above the precision right-angle series limit.<\/p>\n

Output:<\/strong> 90\u00b0 right-angle \u00b7 Torque:<\/strong> up to 9,585 N\u00b7m \u00b7 Variants:<\/strong> AHK\/AHKA\/AHKB\/AHKC<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

New Line vs Precision Series \u2014 What Changes and What Stays the Same<\/h3>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n
Property<\/th>\nNew Line EP-AH\/AHK \u2605<\/th>\nPrecision Series EP-AFH (inline)<\/th>\n<\/tr>\n<\/thead>\n
Max output torque<\/td>\n9,585 N\u00b7m<\/td>\n3,805 N\u00b7m<\/td>\n<\/tr>\n
Max frame diameter<\/td>\n450 mm<\/td>\n240 mm<\/td>\n<\/tr>\n
Single-stage backlash<\/td>\n1\u20132 arcmin (range, not P0)<\/td>\n\u22641 arcmin (AFH075+, standard)<\/td>\n<\/tr>\n
Two-stage backlash<\/td>\n2\u20133 arcmin<\/td>\n\u22642 arcmin (AFH075+)<\/td>\n<\/tr>\n
Stage count<\/td>\n1 to 4 stages \u2014 same range in both<\/td>\n<\/tr>\n
Max reduction ratio<\/td>\n10,000:1 (multi-stage, both)<\/td>\n<\/tr>\n
Temp \/ IP<\/td>\nIdentical \u2014 \u221210 to +90 \u00b0C \u00b7 IP65<\/td>\n<\/tr>\n
Price positioning<\/td>\nNew Line \u2014 lower cost than Precision at equivalent frame size<\/td>\nPrecision Line<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/section>\n

\u00a0<\/p>\n

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EP-AH\/AHK New Line \u2014 Complete Specifications<\/h2>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Common Specifications \u2014 All AH\/AHK Configurations<\/th>\n<\/tr>\n<\/thead>\n
Output Torque Range<\/td>\n24 N\u00b7m to 9,585 N\u00b7m (frame and stage dependent)<\/td>\n<\/tr>\n
Gear Series<\/td>\nNew Line \u2014 between Precision and Economic<\/td>\n<\/tr>\n
Single-Stage Backlash<\/td>\n1 to 2 arcmin (range across frames)<\/td>\n<\/tr>\n
Two-Stage Backlash<\/td>\n2 to 3 arcmin<\/td>\n<\/tr>\n
Three-Stage Backlash<\/td>\n\u22642 arcmin<\/td>\n<\/tr>\n
Four-Stage Backlash<\/td>\n\u22642 arcmin<\/td>\n<\/tr>\n
Backlash Grade Codes<\/td>\nNone \u2014 New Line does not use P0\/P1\/P2 precision grade selection.<\/td>\n<\/tr>\n
Stage Configurations<\/td>\n1-stage, 2-stage, 3-stage, 4-stage<\/td>\n<\/tr>\n
Reduction Ratio Range<\/td>\n4:1 (single-stage) to 10,000:1 (four-stage)<\/td>\n<\/tr>\n
Single-Stage Efficiency<\/td>\n\u226597%<\/td>\n<\/tr>\n
Two-Stage Efficiency<\/td>\n\u226594 to 95%<\/td>\n<\/tr>\n
Three-Stage Efficiency<\/td>\n\u226592 to 93%<\/td>\n<\/tr>\n
Four-Stage Efficiency<\/td>\n\u226590%<\/td>\n<\/tr>\n
\u0420\u0430\u0434\u043d\u0430 \u0442\u0435\u043c\u043f\u0435\u0440\u0430\u0442\u0443\u0440\u0430<\/td>\n\u221210 \u00b0C to +90 \u00b0C<\/td>\n<\/tr>\n
IP Rating<\/td>\nIP65 standard<\/td>\n<\/tr>\n
Frame Sizes (body \u00d8)<\/td>\n064 \/ 090 \/ 110 \/ 140 \/ 200 \/ 255 \/ 285 \/ 355 (\/ 450)<\/td>\n<\/tr>\n
Output Variants<\/td>\nAH (inline) \u00b7 AHK (right-angle, 2-stage) \u00b7 AHKA (right-angle, 3-stage) \u00b7 AHKB (right-angle, 3-stage wide) \u00b7 AHKC (right-angle, additional config)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

<\/p>\n

\n
\u25b8 1\u20132 arcmin single-stage \u2014 a range, not a single value: <\/span>
\nThe New Line single-stage backlash is specified as 1 to 2 arcmin across the frame size range \u2014 smaller frames (AH064) may be toward the 2 arcmin end, larger frames may achieve closer to 1 arcmin. The precise value for your selected frame is confirmed by Korea Ever-Power at the time of order. If a guaranteed \u22641 arcmin specification is required, specify the precision series at P0 grade.<\/span><\/div>\n
\u25b8 AH355 and AH450 \u2014 lead-time note: <\/span>
\nThe largest New Line frames (AH355 and AH450) are produced to order with lead times longer than standard frames. Engage Korea Ever-Power early in the project design phase to confirm availability and lead time for these frame sizes before finalising the machine schedule.<\/span><\/div>\n<\/div>\n<\/section>\n

<\/p>\n

\n

Model Designation Guide \u2014 EP-AH and EP-AHK<\/h2>\n

\"\u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u0435<\/p>\n

\n
EP-AH 200 \/ S2 \u2190 inline, 2 stages<\/div>\n
EP-AHK 200 \/ S2 \u2190 right-angle, 2-stage<\/div>\n
EP-AHKA 200 \/ S2 \u2190 right-angle, 3-stage (high-torque)<\/div>\n
EP-AHKB 200 \/ S2 \u2190 right-angle, 3-stage (wide range)<\/div>\n
\n
\n
EP-AH \/ AHK<\/div>\n
New Line heavy-duty
\nAH = inline
\nAHK\/KA\/KB\/KC = right-angle<\/div>\n<\/div>\n
\n
200<\/div>\n
Body diameter 200 mm
\n(AH scale: 064\u2013450)<\/div>\n<\/div>\n
\n
S2<\/div>\n
S1: smooth shaft
\nS2: with keyway<\/div>\n<\/div>\n
\n
[no grade]<\/div>\n
No P0\/P1\/P2 codes
\nBacklash fixed per
\nframe and stage count<\/div>\n<\/div>\n<\/div>\n<\/div>\n

Provide your required output torque, reduction ratio, and stage count preference to Korea Ever-Power. The Korean application team will confirm the appropriate configuration (AH inline or AHK\/AHKA\/AHKB\/AHKC right-angle), the available ratio combinations for your selected frame, and the specific backlash value for your frame size.<\/p>\n<\/section>\n

<\/p>\n

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Applications \u2014 Heavy-Duty New Line Drives in Korean Industry<\/h2>\n

\"planetary<\/p>\n

\n
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Steel Plant Large Rotary Tables \u2014 AH355\/AH450, Above 3,805 N\u00b7m<\/h3>\n

Korean integrated steel mills and special steel producers use large-diameter rotary tables \u2014 3 m to 6 m diameter \u2014 for positioning steel billet and slab loads in the 20\u2013200 tonne range. The table drive torque required at this scale exceeds 4,000 N\u00b7m, beyond the precision series ceiling. EP-AH355 and EP-AH450 New Line fill this tier, delivering the required output torque with 1 to 2 arcmin backlash sufficient for positioning billets to the \u00b10.1 mm tolerance typical of Korean slab indexing operations. The \u221210 \u00b0C lower temperature limit also covers Korean mill buildings in winter. Paired with heavy-duty CV drive shafts for dual-motor table drive configurations.<\/p>\n<\/div>\n

\n

Shipbuilding Assembly Positioners \u2014 AHK Large Right-Angle<\/h3>\n

Korean shipyard block assembly operations require large positioner drives for rotating ship block segments \u2014 hull sections up to 200 tonnes \u2014 during welding and outfitting operations. The positioner drive torque exceeds the precision series maximum; the motor must be positioned perpendicular to the block rotation axis due to structural clearance requirements. EP-AHK right-angle configurations at AHK200 and AHK255 cover the torque levels typical of Korean shipyard block positioner drives, with the 1 to 2 arcmin backlash sufficient for welding position accuracy.<\/p>\n<\/div>\n

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Mining Conveyor Drives \u2014 AH200\/255, High-Torque Moderate Ratio<\/h3>\n

Korean mine conveyor head drives and transfer conveyor drives require high output torques in the 3,000\u20138,000 N\u00b7m range at moderate reduction ratios (two-stage configurations). EP-AH200 and EP-AH255 New Line serve this application range \u2014 with the \u221210 \u00b0C lower temperature limit covering underground mine environments in Korean winter, and the 1 to 2 arcmin backlash providing adequate position control for conveyor speed regulation. The New Line cost positioning against the precision series is particularly relevant for bulk mining equipment where P0 precision is not required.<\/p>\n<\/div>\n

\n

Wind Turbine Yaw and Pitch \u2014 AH\/AHK Multi-Stage<\/h3>\n

Korean offshore and onshore wind turbine yaw drive systems \u2014 rotating the nacelle to track wind direction \u2014 require high torques at very high reduction ratios (typically 10,000:1 and above from a standard motor) at a 90-degree output direction. EP-AHK multi-stage four-stage configurations cover the yaw drive torque and ratio range for Korean wind turbines in the 3\u20138 MW class, with the New Line 1 to 2 arcmin backlash sufficient for yaw positioning accuracy. The \u221210 \u00b0C lower temperature limit covers Korean offshore winter conditions. Integration with worm gear reducers for additional holding torque in pitch control applications.<\/p>\n<\/div>\n

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Heavy Press Brake Back Gauge \u2014 AH140\/200 High Precision Alternative<\/h3>\n

Korean heavy press brake machines processing thick structural steel (40\u201380 mm) require back gauge positioning drives with high torque capacity and adequate backlash for \u00b10.5 mm positioning accuracy. EP-AH140 and EP-AH200 New Line provide the torque and size range for heavy press back gauge drives at New Line cost, where the precision series P1 specification would be over-specified for the actual positioning requirement. Korean press brake OEMs building cost-competitive machines for general structural steel markets find New Line appropriate for this application where sub-2-arcmin precision is sufficient.<\/p>\n<\/div>\n

\n

Agricultural Machinery \u2014 Large Tillage Equipment Drives<\/h3>\n

Korean large-scale agricultural tillage equipment \u2014 deep tillage machines, combination seed-bed preparation implements \u2014 operating on large Korean farms requires drive units at the upper torque range of agricultural gearboxes. EP-AH110 and EP-AH140 New Line bridge the gap between standard agricultural gearbox torque levels and heavy industrial precision drives, providing adequate torque at \u221210 \u00b0C for Korean early-spring field operations. Combined with agricultural bevel gearboxes for multi-output distribution to multiple tillage heads across the implement working width.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

<\/p>\n

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Quality Certifications & Testing Standards<\/h2>\n
\n
\n
\n
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ISO 9001<\/div>\n
Quality Management<\/div>\n<\/div>\n
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CE<\/div>\n
EU Machinery Directive<\/div>\n<\/div>\n
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KS<\/div>\n
Korean Industrial Standard<\/div>\n<\/div>\n
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RoHS<\/div>\n
Hazardous Substance Free<\/div>\n<\/div>\n<\/div>\n