{"id":688,"date":"2026-06-01T05:07:21","date_gmt":"2026-06-01T05:07:21","guid":{"rendered":"https:\/\/planetary-gearboxes.com\/?post_type=product&p=688"},"modified":"2026-06-01T05:07:21","modified_gmt":"2026-06-01T05:07:21","slug":"ep-zdwe-series-right-angle-input-planetary-gearbox","status":"publish","type":"product","link":"https:\/\/planetary-gearboxes.com\/da\/vare\/ep-zdwe-series-right-angle-input-planetary-gearbox\/","title":{"rendered":"EP-ZDWE Series Right-Angle Input Precision Planetary Gearbox"},"content":{"rendered":"
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<\/p>\n

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EP-ZDWE Series \u2014 Right-Angle Input Precision Planetary Gearbox | Round Flange, 30\u201350% Axial Space Saving, up to 800 N\u00b7m<\/h2>\n
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\"EP-ZDWE<\/p>\n

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90\u00b0 Input<\/div>\n
Bevel gear right angle<\/div>\n<\/div>\n
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30\u201350%<\/div>\n
Axial space saving<\/div>\n<\/div>\n
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800 N\u00b7m<\/div>\n
Max output torque<\/div>\n<\/div>\n
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IP54<\/div>\n
Livstidssm\u00f8ring<\/div>\n<\/div>\n<\/div>\n
\u2190 Browse All Planetary Gearbox Series<\/a><\/div>\n<\/div>\n
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\u2605 The Right-Angle Input Precision Planetary Gearbox \u2014 Motor Perpendicular to Output, 30\u201350% Shorter Installation Envelope<\/div>\n

EP-ZDWE positions the servo motor at 90\u00b0 to the output shaft via an internal bevel gear stage, reducing the total axial length of the motor + gearbox assembly by 30\u201350% compared to the inline EP-ZDE planetary gearbox<\/a>. The output is a round (circular) mounting flange<\/strong> \u2014 identical to EP-ZDE for output-side installation. For the square-flange right-angle version, see the EP-ZDWF series<\/a>.<\/p>\n<\/div>\n

The EP-ZDWE series right-angle input precision planetary gearbox<\/strong> from Korea Ever-Power solves the most common spatial constraint in Korean servo drive design: the motor axis cannot be coaxial with the output shaft axis. In compact machine tool headstocks, robot wrist joints, narrow-profile conveyor drives, and multi-axis gantry systems where available depth behind the output shaft is limited, EP-ZDWE places the motor perpendicular to the output \u2014 either left\/right or up\/down \u2014 reclaiming the axial space that an inline motor would otherwise consume.<\/p>\n

The bevel input stage introduces one additional gear mesh compared to the inline EP-ZDE, reducing single-stage efficiency from 96% (EP-ZDE) to 94%<\/strong> \u2014 a minor trade-off that Korean machine designers readily accept in exchange for the installation footprint reduction. The output shaft, round flange, bearing arrangement, lifetime lubrication, and IP54 sealing are identical to EP-ZDE of the same frame size, ensuring the output-side installation is a direct carryover.<\/p>\n

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\ud83d\udcd0 30\u201350% Shorter<\/div>\n
Total motor + gearbox axial depth versus inline EP-ZDE.<\/div>\n<\/div>\n
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\ud83d\udd04 Same Output as ZDE<\/div>\n
Round flange D7, shaft D4 h7 \u2014 output-side drop-in compatible.<\/div>\n<\/div>\n
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\u2195 Any Orientation<\/div>\n
Motor left, right, up, or down \u2014 4 input directions supported.<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n

<\/p>\n

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The 90\u00b0 Bevel Input \u2014 How It Saves Axial Space and When to Use It<\/h2>\n

\"Planerary<\/p>\n

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INLINE INPUT (EP-ZDE) \u2014 TOTAL AXIAL LENGTH<\/p>\n

\u2190 Motor length \u2192\u2190 Gearbox L1 \u2192
\n[====Motor====][===ZDE===]\u2500\u2500\u25b6 Output
\nTotal depth = Motor + L1
\ne.g. 80-frame 1-stage:
\nMotor ~120 mm + L1 144 mm
\n= ~264 mm axial depth<\/div>\n

RIGHT-ANGLE INPUT (EP-ZDWE) \u2014 AXIAL SAVING<\/p>\n

[=Motor=] \u2190 perpendicular
\n\u2193 90\u00b0 bevel
\n[=====ZDWE=====]\u2500\u2500\u25b6 Output
\nTotal depth = Gearbox L1 only
\ne.g. 80-frame 1-stage:
\nL1 184.5 mm axial depth only
\nMotor exits sideways \u2192 saved!<\/div>\n<\/div>\n<\/div>\n
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Three Engineering Situations Where EP-ZDWE Is the Correct Choice<\/h3>\n
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\u2460 Machine Envelope Has Depth Limit Behind the Output \u2014 Motor Cannot Fit Inline<\/strong><\/p>\n

Korean compact machining centre headstocks, dial-index machine tool rotary axis units, and narrow-profile conveyor drives frequently have a hard structural limit on the depth available behind the gearbox output flange. On an 80-frame inline EP-ZDE with a 1 kW servo motor, the motor + gearbox assembly can reach 260\u2013290 mm total depth \u2014 exceeding the available space in the machine column or arm section. EP-ZDWE-80 with the same motor reduces the axial depth to the gearbox length alone (184.5 mm, 1-stage), with the motor extending sideways within the available width of the machine section. This 30\u201340% axial reduction is frequently the deciding factor for Korean machine tool designers between a compact single-column design and a wider (and heavier) dual-column structure.<\/p>\n<\/div>\n

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\u2461 Robot Arm Cross-Section Limits Inline Motor Placement<\/strong><\/p>\n

Korean collaborative robot and industrial robot wrist joint designers face a fundamental conflict: the joint must transmit significant torque (typically 20\u201380 N\u00b7m at the wrist) while fitting within the robot arm outer diameter \u2014 typically 60\u2013100 mm for a 6 kg payload robot. An inline motor + planetary gearbox combination at this torque level extends the robot link length significantly, affecting the robot’s workspace envelope and dynamic balance. EP-ZDWE positions the motor perpendicular to the joint axis, allowing the robot wrist outer diameter to be governed by the gearbox body diameter (\u03a660\u2013\u03a680 mm) rather than the combined motor + gearbox depth. Korean collaborative robot manufacturers in Suwon and Seongnam report EP-ZDWE-60 and EP-ZDWE-80 enabling wrist joint designs that reduce the link length by 80\u2013120 mm compared to inline motor configurations.<\/p>\n<\/div>\n

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\u2462 Multi-Axis Gantry Systems \u2014 Parallel Motor Arrangement for Centre-of-Gravity Optimisation<\/strong><\/p>\n

Korean high-speed laser cutting and pick-and-place gantry systems driving X, Y, and Z axes from a single compact carriage assembly benefit from EP-ZDWE by allowing all three servo motors to be arranged parallel to the carriage travel direction \u2014 motors pointing sideways rather than forward and rearward. This concentrates the motor mass close to the carriage centre of gravity, reducing the dynamic moment arm of the motor inertia contribution and improving positioning accuracy at high acceleration rates. For Korean laser cutting systems at 150+ m\/min feed rates, the centre-of-gravity improvement from right-angle motor placement measurably reduces trajectory error at direction reversals compared to inline configurations where the motor mass extends the carriage overhang.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

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EP-ZDWE vs EP-ZDE \u2014 Choosing Between Right-Angle and Inline Input<\/h3>\n
\n\n\n\n\n\n\n\n\n\n\n\n
Criterion<\/th>\nEP-ZDE \u2014 Inline Input<\/a><\/th>\nEP-ZDWE \u2014 Right-Angle Input \u2605<\/th>\n<\/tr>\n<\/thead>\n
Motor-to-output orientation<\/td>\nCoaxial \u2014 motor in line with output shaft<\/td>\n90\u00b0 \u2014 motor perpendicular to output shaft<\/td>\n<\/tr>\n
Total axial installation depth<\/td>\nMotor length + Gearbox L1 (e.g. ~264 mm for 80-frame)<\/td>\nGearbox L1 only (e.g. 184.5 mm for 80-frame) \u2014 30\u201350% shorter<\/td>\n<\/tr>\n
Single-stage efficiency<\/td>\n96% \u2014 no bevel stage loss<\/td>\n94% \u2014 bevel stage adds ~2% loss<\/td>\n<\/tr>\n
Available frame sizes<\/td>\n40 \/ 60 \/ 80 \/ 120 \/ 160 mm (5 sizes)<\/td>\n60 \/ 80 \/ 120 \/ 160 mm (4 sizes \u2014 no 40 mm frame)<\/td>\n<\/tr>\n
Output flange & shaft<\/td>\nIdentical \u2014 round flange D7, shaft D4 h7, same torque ratings per frame<\/td>\n<\/tr>\n
Lubrication \/ IP \/ Temperature<\/td>\nIdentical \u2014 Lifetime sealed grease \u00b7 IP54 \u00b7 \u221225\u00b0C to +90\u00b0C \u00b7 Any orientation<\/td>\n<\/tr>\n
Choose when\u2026<\/td>\nAxial space is adequate; efficiency priority; smallest frame (40 mm) needed<\/td>\nAxial depth is constrained; motor direction flexibility needed; compact arm\/headstock design<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/section>\n

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EP-ZDWE Series \u2014 Complete Technical Specifications<\/h2>\n

\u2460 Rated Output Torque (N\u00b7m) \u2014 All Frame Sizes & Ratios<\/h3>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Forhold<\/th>\nScene<\/th>\nZDWE-60<\/th>\nZDWE-80<\/th>\nZDWE-120<\/th>\nZDWE-160<\/th>\n<\/tr>\n<\/thead>\n
3:1<\/td>\n1<\/td>\n12<\/td>\n40<\/td>\n80<\/td>\n400<\/td>\n<\/tr>\n
4:1<\/td>\n1<\/td>\n16<\/td>\n50<\/td>\n110<\/td>\n450<\/td>\n<\/tr>\n
5:1<\/td>\n1<\/td>\n16<\/td>\n50<\/td>\n110<\/td>\n450<\/td>\n<\/tr>\n
8:1<\/td>\n1<\/td>\n15<\/td>\n45<\/td>\n100<\/td>\n400<\/td>\n<\/tr>\n
10:1<\/td>\n1<\/td>\n12<\/td>\n40<\/td>\n80<\/td>\n305<\/td>\n<\/tr>\n
9:1<\/td>\n2<\/td>\n40<\/td>\n100<\/td>\n210<\/td>\n\u2014<\/td>\n<\/tr>\n
12:1<\/td>\n2<\/td>\n40<\/td>\n100<\/td>\n210<\/td>\n700<\/td>\n<\/tr>\n
16:1<\/td>\n2<\/td>\n44<\/td>\n120<\/td>\n260<\/td>\n800<\/td>\n<\/tr>\n
20:1<\/td>\n2<\/td>\n44<\/td>\n120<\/td>\n260<\/td>\n800<\/td>\n<\/tr>\n
25:1<\/td>\n2<\/td>\n40<\/td>\n110<\/td>\n230<\/td>\n700<\/td>\n<\/tr>\n
32:1<\/td>\n2<\/td>\n44<\/td>\n120<\/td>\n260<\/td>\n800<\/td>\n<\/tr>\n
40:1<\/td>\n2<\/td>\n40<\/td>\n110<\/td>\n230<\/td>\n700<\/td>\n<\/tr>\n
64:1<\/td>\n2<\/td>\n40<\/td>\n100<\/td>\n210<\/td>\n700<\/td>\n<\/tr>\n
60\u2013512:1<\/td>\n3<\/td>\n40\u201344<\/td>\n100\u2013120<\/td>\n210\u2013260<\/td>\n\u2014<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
\u25b8 No 40 mm frame: for a right-angle planetgearkasse<\/strong> the smallest frame is 60 mm. <\/span>The smallest available frame for EP-ZDWE is 60 mm. For applications requiring a 40 mm frame, use the inline EP-ZDE-40 planetary gearbox<\/a>. Instant stop torque = 2\u00d7 rated. 3-stage not available for ZDWE-160.<\/span><\/div>\n

\u2461 Load Capacity, Efficiency, Weight & Speed<\/h3>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Parameter<\/th>\nEnhed<\/th>\nZDWE-60<\/th>\nZDWE-80<\/th>\nZDWE-120<\/th>\nZDWE-160<\/th>\n<\/tr>\n<\/thead>\n
Max radial force<\/td>\nN<\/td>\n450<\/td>\n900<\/td>\n2,100<\/td>\n6,000<\/td>\n<\/tr>\n
Max axial force<\/td>\nN<\/td>\n225<\/td>\n450<\/td>\n1,050<\/td>\n3,000<\/td>\n<\/tr>\n
Efficiency \u2014 1-stage<\/td>\n%<\/td>\n94 (vs 96% for inline EP-ZDE \u2014 bevel stage)<\/span><\/td>\n<\/tr>\n
Efficiency \u2014 2-stage<\/td>\n%<\/td>\n92<\/td>\n<\/tr>\n
Efficiency \u2014 3-stage<\/td>\n%<\/td>\n88<\/td>\n<\/tr>\n
Weight \u2014 1-stage<\/td>\nkg<\/td>\n1.7<\/td>\n4.4<\/td>\n12<\/td>\n36<\/td>\n<\/tr>\n
Weight \u2014 2-stage<\/td>\nkg<\/td>\n1.9<\/td>\n5<\/td>\n14<\/td>\n40<\/td>\n<\/tr>\n
Weight \u2014 3-stage<\/td>\nkg<\/td>\n2.1<\/td>\n5.5<\/td>\n16<\/td>\n\u2014<\/td>\n<\/tr>\n
Torsional stiffness \u2014 1-stage<\/td>\nN\u00b7m\/arcmin<\/td>\n1.5<\/td>\n4.5<\/td>\n10<\/td>\n38<\/td>\n<\/tr>\n
Torsional stiffness \u2014 2-stage<\/td>\nN\u00b7m\/arcmin<\/td>\n2.5<\/td>\n6.5<\/td>\n13<\/td>\n43<\/td>\n<\/tr>\n
Noise (idle, 3,000 rpm)<\/td>\ndB(A)<\/td>\n65<\/td>\n68<\/td>\n70<\/td>\n70<\/td>\n<\/tr>\n
Maksimal indgangshastighed<\/td>\nomdrejninger i minuttet<\/td>\n4,500<\/td>\n<\/tr>\n
Recommended input speed<\/td>\nomdrejninger i minuttet<\/td>\n3,000<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

\u2462 Backlash by Frame & Stage<\/h3>\n
\n\n\n\n\n\n\n\n
Scene<\/th>\nEnhed<\/th>\nZDWE-60<\/th>\nZDWE-80<\/th>\nZDWE-120<\/th>\nZDWE-160<\/th>\n<\/tr>\n<\/thead>\n
Backlash \u2014 1-stage<\/td>\nbuemin<\/td>\n<30<\/td>\n<25<\/td>\n<25<\/td>\n<25<\/td>\n<\/tr>\n
Backlash \u2014 2-stage<\/td>\nbuemin<\/td>\n<35<\/td>\n<30<\/td>\n<30<\/td>\n<30<\/td>\n<\/tr>\n
Backlash \u2014 3-stage<\/td>\nbuemin<\/td>\n<40<\/td>\n<35<\/td>\n<35<\/td>\n\u2014<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
\u25b8 Backlash note \u2014 right-angle input bevel stage contribution: <\/span>The EP-ZDWE backlash is wider than EP-ZDE (e.g. <25 arcmin vs <8 arcmin for 1-stage frame 80\u2013160) because the bevel gear input stage adds its own angular play to the planetary stage backlash. If your application requires <8 arcmin and axial space permits, the inline EP-ZDE round flange precision planetary gearbox<\/a> is the correct selection. EP-ZDWE is optimal when the spatial constraint takes priority over minimum backlash.<\/span><\/div>\n

\u2463 General Specifications<\/h3>\n

\"Planerary<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Parameter<\/th>\nSpecification<\/th>\n<\/tr>\n<\/thead>\n
Driftstemperatur<\/td>\n\u221225\u00b0C to +90\u00b0C<\/td>\n<\/tr>\n
Protection rating<\/td>\nIP54 (IEC 60529) \u2014 dust-tight, splash-protected from any direction<\/td>\n<\/tr>\n
Sm\u00f8ring<\/td>\nLifetime lubrication \u2014 factory-sealed, no re-greasing required<\/td>\n<\/tr>\n
Mounting orientation<\/td>\nAny \u2014 horizontal, vertical, inverted, any inclined angle<\/td>\n<\/tr>\n
Motor input direction<\/td>\n4 positions \u2014 left, right, up, down (90\u00b0 to output axis, specify on order)<\/td>\n<\/tr>\n
Input shaft clamping types<\/td>\nS: integral locking (default) \u00b7 S1: locking ring \u00b7 S2: keyway + clamping \u00b7 K: keyway \u00b7 A: custom<\/td>\n<\/tr>\n
Output shaft tolerance<\/td>\nh7 \u2014 all frame sizes (same as EP-ZDE)<\/td>\n<\/tr>\n
Rated service life<\/td>\n20,000 hours at rated load (L10 bearing life)<\/td>\n<\/tr>\n
Moment med \u00f8jeblikkelig stop<\/td>\n2\u00d7 rated output torque<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/section>\n

<\/p>\n

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EP-ZDWE Series \u2014 Mechanical Dimensions (Unit: mm)<\/h2>\n

L12 is the total height of the gearbox including the perpendicular input flange \u2014 the critical dimension when the motor exits upward or downward. L1 is the overall length along the output axis \u2014 the dimension that determines how much axial space is saved versus the inline EP-ZDE.<\/p>\n

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

\n\n\n\n\n\n\n\n\n\n\n\n
Dimension<\/th>\n60ZDWE<\/th>\n80ZDWE<\/th>\n120ZDWE<\/th>\n160ZDWE<\/th>\n<\/tr>\n<\/thead>\n
Overall length L1 \u2014 1-stage (axial, output side)<\/td>\n150<\/td>\n184.5<\/td>\n249.2<\/td>\n368<\/td>\n<\/tr>\n
Overall length L1 \u2014 2-stage (axial, output side)<\/td>\n163<\/td>\n202.5<\/td>\n277<\/td>\n417.5<\/td>\n<\/tr>\n
Total height L12 (perpendicular, incl. input flange)<\/td>\n93<\/td>\n119.5<\/td>\n167.5<\/td>\n229<\/td>\n<\/tr>\n
Output shaft diameter D4<\/td>\n\u03a614h7<\/td>\n\u03a620h7<\/td>\n\u03a625h7<\/td>\n\u03a640h7<\/td>\n<\/tr>\n
Body diameter D7 (round flange)<\/td>\n\u03a660<\/td>\n\u03a680<\/td>\n\u03a6115<\/td>\n\u03a6160<\/td>\n<\/tr>\n
Input flange length L2<\/td>\n20<\/td>\n32<\/td>\n38<\/td>\n66<\/td>\n<\/tr>\n
Input flange Q3 (square)<\/td>\n\u25a160<\/td>\n\u25a180<\/td>\n\u25a1130<\/td>\n\u25a1175<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
\u25b8 Purple rows are the key ZDWE-specific dimensions. <\/span>L12 is the perpendicular height including the motor input flange \u2014 use this when the motor exits upward or downward in your installation layout. The output shaft D4 and body diameter D7 are identical to the corresponding EP-ZDE frame size, ensuring the output-side machine interface is a direct carryover from an inline design.<\/span><\/div>\n<\/section>\n

<\/p>\n

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Installation Guide \u2014 EP-ZDWE Right-Angle Input Series<\/h2>\n
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Motor Input Direction \u2014 4 Orientations Available<\/h3>\n

The EP-ZDWE input flange can be oriented in 4 positions relative to the output shaft axis: motor input left, right, up, or down. Specify the required input direction when ordering \u2014 the bevel gear stage orientation is set at manufacture. The sealed lifetime lubrication supports all 4 input directions without lubrication modification.<\/p>\n

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\u2b05\ufe0f<\/div>\n
Motor Left<\/div>\n
Motor exits left of the output axis \u2014 common in machine tool headstock designs<\/div>\n<\/div>\n
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\u27a1\ufe0f<\/div>\n
Motor Right<\/div>\n
Motor exits right \u2014 mirror image of left, for opposite-hand installations<\/div>\n<\/div>\n
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\u2b06\ufe0f<\/div>\n
Motor Up<\/div>\n
Motor exits upward \u2014 robot wrist and overhead gantry drives<\/div>\n<\/div>\n
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\u2b07\ufe0f<\/div>\n
Motor Down<\/div>\n
Motor exits downward \u2014 floor-mounted conveyor head pulley drives<\/div>\n<\/div>\n<\/div>\n

Step-by-Step Installation Procedure<\/h3>\n

\"Procedure<\/p>\n

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1<\/div>\n

Confirm Input Direction & Model Code<\/strong><\/p>\n<\/div>\n

Verify the EP-ZDWE model code includes the input direction specification (left\/right\/up\/down). Confirm frame size (60\u2013160), gear ratio, output flange D7 (\u03a660\u2013\u03a6160 mm), and input flange Q3 matches the servo motor front face. Check that L12 (total perpendicular height) fits within the available machine section height before installation.<\/p>\n<\/div>\n

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2<\/div>\n

Motor Coupling \u2014 Perpendicular Clamping Input<\/strong><\/p>\n<\/div>\n

Insert the servo motor shaft into the perpendicular input bore on the bevel stage side of the gearbox until the motor face contacts the input flange squarely. The clamping input (S-type) works with or without a motor shaft keyway. Tighten locking screws evenly in a cross pattern. Ensure no axial gap between the motor face and the input flange \u2014 a gap indicates the motor shaft length is shorter than the input bore depth; use a spacer ring if required.<\/p>\n<\/div>\n

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3<\/div>\n

Output Flange Mounting to Machine<\/strong><\/p>\n<\/div>\n

The EP-ZDWE round output flange (D7) mounts identically to EP-ZDE \u2014 align the spigot with the machine bore for a close-running fit, install 4\u00d7G2 mounting screws, torque evenly. Mounting surface flatness must be within 0.02 mm. Verify there is adequate clearance for the motor to protrude in the specified input direction without contacting machine structure or cable runs before tightening.<\/p>\n<\/div>\n

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4<\/div>\n

Output Shaft Connection & Cable Routing<\/strong><\/p>\n<\/div>\n

Connect the load coupling to the h7 output shaft D4 using the standard procedure (key width B1: see ZDE table for same frame size). Route the servo motor power and encoder cables away from the motor in a direction that does not create cable tension at the motor connector during gantry travel or robot arm movement. The 90\u00b0 input arrangement typically allows cables to exit parallel to the gantry travel direction \u2014 plan the cable chain routing during installation.<\/p>\n<\/div>\n

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5<\/div>\n

Load & Clearance Verification<\/strong><\/p>\n<\/div>\n

Confirm applied radial load at output shaft centre (L\/2) does not exceed the max radial force \u2014 identical to EP-ZDE at the same frame size (e.g. 900 N for 80-frame). Manually rotate the motor shaft through a full output revolution and confirm the motor body clears all machine structure in the perpendicular direction throughout the gantry travel range or robot joint angle range \u2014 particularly important for robot wrist joints where the perpendicular motor sweeps an arc during joint rotation.<\/p>\n<\/div>\n

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6<\/div>\n

No-Load Run-In & Bevel Stage Warm-Up<\/strong><\/p>\n<\/div>\n

Run at no-load for 30 minutes at \u226450% rated input speed, monitoring for unusual noise from the bevel stage \u2014 a light humming during the first 10\u201315 minutes is normal as the bevel gear contact surfaces burnish to their running-in geometry. Monitor housing temperature at both the output bearing area and the bevel stage housing \u2014 confirm neither exceeds ambient + 90\u00b0C. Verify system backlash after run-in and record as the baseline value.<\/p>\n<\/div>\n<\/div>\n

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\u26a0 Right-Angle Input Cautions:<\/strong> The motor input direction must be specified at the time of ordering \u2014 the bevel gear orientation is set at manufacture and cannot be changed in the field. Do not attempt to rotate the bevel stage housing to change the input direction. Do not apply axial force to the bevel stage input shaft during motor installation \u2014 seat the motor face squarely. Maintain cable management to prevent cable tension pulling the motor connector during machine travel.<\/p>\n<\/div>\n

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\u2714 Zero Maintenance \u2014 Bevel Stage Included:<\/strong> The EP-ZDWE factory-sealed lifetime lubrication covers both the bevel input stage and the planetary gear stages in a single sealed housing. No separate bevel gear oil fill, no level check, no scheduled lubrication for the bevel stage. The entire gearbox \u2014 input bevel and planetary output \u2014 runs on factory-injected lifetime grease for the full 20,000-hour rated life.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

<\/p>\n

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Applications \u2014 EP-ZDWE Right-Angle Planetary Gearbox in Korean Compact Drive Designs<\/h2>\n
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Compact CNC Machine Tool Headstocks \u2014 Rotary Axis Drive<\/h3>\n

Korean compact 5-axis machining centre builders use EP-ZDWE-80 and EP-ZDWE-120 for A-axis and B-axis rotary table drives in machines where the column depth behind the rotary axis is constrained by the machine column cross-section. A typical Korean 5-axis compact machining centre column has 220\u2013250 mm of available depth behind the A-axis flange face \u2014 insufficient for a 1 kW servo motor + EP-ZDE-80 at 264 mm combined. EP-ZDWE-80 reduces the axial depth to 184.5 mm (1-stage), with the motor exiting laterally within the available column width. Korean machining centre OEMs in Changwon and Incheon report EP-ZDWE enabling column cross-section reductions of 80\u2013100 mm across product lines that drive down machine weight and price.<\/p>\n<\/div>\n

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Collaborative Robot Wrist & Elbow Joints<\/h3>\n

Korean collaborative robot manufacturers designing sub-80 mm outer diameter arms use EP-ZDWE-60 for wrist roll (rotation about the arm axis) drives. An inline motor + planetary gearbox at the wrist joint requires the motor to protrude beyond the wrist end-effector mounting flange \u2014 increasing the effective arm length and reducing the robot’s reach-to-depth ratio. EP-ZDWE-60 routes the motor perpendicular to the wrist axis, keeping the arm outer diameter governed by the gearbox body (\u03a660 mm) rather than the motor outer diameter. For the square-flange right-angle variant<\/strong> for wrist joints using plate-mount structure, see the EP-ZDWF series<\/a>.<\/p>\n<\/div>\n

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High-Speed Gantry Laser Cutting \u2014 Compact Y-Axis Carriage<\/h3>\n

Korean fibre laser cutting system manufacturers designing narrow-profile Y-axis carriages for systems cutting sheet metal up to 4 m wide use EP-ZDWE-80 for the carriage drive axis. The narrow carriage profile reduces the moving mass and moment of inertia of the Y-axis, enabling higher acceleration rates and shorter cycle times. With the motor exiting sideways from the carriage, the cable management chain can run parallel to the Y-axis travel \u2014 a cleaner layout than the axially-protruding motor of an inline configuration where the cable chain must accommodate the motor length as an obstacle.<\/p>\n<\/div>\n

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Narrow-Profile Conveyor & Sorting Systems<\/h3>\n

Korean e-commerce fulfilment and parcel sorting system integrators use EP-ZDWE-60 for drive rollers on narrow-pitch conveyor sections where the belt-width-to-gearbox-depth ratio is constrained. On a 150 mm wide conveyor section, an inline motor + planetary gearbox protruding 260+ mm from the frame would require a larger housing or cross-beam. EP-ZDWE-60 fits within the conveyor frame depth with the motor exiting downward or sideways between adjacent conveyor modules \u2014 a common design in Korean high-density sortation conveyor systems at fulfilment centres in Incheon, Suwon, and Bucheon.<\/p>\n<\/div>\n

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Multi-Axis Semiconductor Wafer Transport \u2014 Compact Arm Joints<\/h3>\n

Korean semiconductor equipment manufacturers designing atmospheric-end multi-axis wafer transport robots for 300 mm wafer handling use EP-ZDWE-60 for elbow and shoulder joints where the robot arm link length is constrained by the equipment front-opening unified pod (FOUP) load-port geometry. The sealed EP-ZDWE-60 passes cleanroom particle contamination evaluation (ISO 14644-1 Class 7) \u2014 the factory-sealed grease generates no detectable particles from the bevel stage during normal operation. Note that the higher backlash of EP-ZDWE (\u226430 arcmin, 60-frame) versus EP-ZDE (\u22648 arcmin) is acceptable for position-controlled wafer transport robots where the servo feedback loop compensates for gearbox backlash through closed-loop position control.<\/p>\n<\/div>\n

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Medical Imaging & Diagnostic Equipment \u2014 Compact Axis Drives<\/h3>\n

Korean medical device manufacturers designing CT scanner gantry rotation drives and surgical robot arm joints use EP-ZDWE-60 and EP-ZDWE-80 for axes where the gantry housing outer profile is constrained by patient clearance requirements and IEC 60601 medical electrical equipment enclosure dimensions. The perpendicular motor arrangement allows the gantry or arm cross-section to be optimised for the minimum volume that meets the structural load requirements, rather than being dictated by the combined motor + gearbox inline length. The lifetime-sealed lubrication meets medical equipment maintenance-interval requirements.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

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Quality Certifications & Testing Standards<\/h2>\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