{"id":690,"date":"2026-06-01T08:51:29","date_gmt":"2026-06-01T08:51:29","guid":{"rendered":"https:\/\/planetary-gearboxes.com\/?post_type=product&p=690"},"modified":"2026-06-01T08:51:29","modified_gmt":"2026-06-01T08:51:29","slug":"ep-zds-series-high-stiffness-planetary-gearbox","status":"publish","type":"product","link":"https:\/\/planetary-gearboxes.com\/et\/toode\/ep-zds-series-high-stiffness-planetary-gearbox\/","title":{"rendered":"EP-ZDS Series High-Stiffness Precision Planetary Gearbox"},"content":{"rendered":"
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EP-ZDS Series \u2014 High-Stiffness Heavy-Load Planetary Gearbox | IP65, up to 1,800 N\u00b7m, 28,000 N Axial Force<\/h2>\n
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\"EP-ZDS<\/p>\n

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1,800 N\u00b7m<\/div>\n
Max output torque<\/div>\n<\/div>\n
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IP65<\/div>\n
Water-jet protected<\/div>\n<\/div>\n
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28,000 N<\/div>\n
Max axial force<\/div>\n<\/div>\n
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130 N\u00b7m\/arcmin<\/div>\n
V\u00e4\u00e4ndj\u00e4ikus<\/div>\n<\/div>\n<\/div>\n
\u2190 Browse All Planetary Gearbox Series<\/a><\/div>\n<\/div>\n
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\u2605 When EP-ZDE\/ZDF-160 at 800 N\u00b7m Is Not Enough \u2014 EP-ZDS Delivers 1,800 N\u00b7m, IP65, and 9\u00d7 the Axial Force Capacity<\/div>\n

EP-ZDS is the Korea Ever-Power heavy-load t\u00e4ppis-planeediline k\u00e4igukast<\/strong> engineered when the precision series (EP-ZDE\/ZDF) reaches its torque, axial load, or environmental protection ceiling. At 190-frame: 1,800 N\u00b7m output torque<\/strong> (2.25\u00d7 the 800 N\u00b7m of EP-ZDE\/ZDF-160), 28,000 N axial force<\/strong> (9.3\u00d7 the 3,000 N of EP-ZDE-160), 130 N\u00b7m\/arcmin torsional stiffness<\/strong>, and IP65<\/strong> full water-jet protection \u2014 all in a square-flange unit that mounts identically to EP-ZDF planetary gearbox<\/a> at the same frame size.<\/p>\n<\/div>\n

The EP-ZDS series high-stiffness planetary gearbox and heavy-load servo gear reducer<\/strong> from Korea Ever-Power is the top-tier product in the EP precision gear reducer range \u2014 specifically engineered for heavy-duty Korean industrial applications where the standard EP-ZDE\/ZDF precision series is structurally insufficient. Three frame sizes cover the 115 mm, 142 mm, and 190 mm body cross-sections, with inline input, square output flange, and rated torque from 125 N\u00b7m to 1,800 N\u00b7m. The IP65 sealed housing withstands direct water-jet washing \u2014 essential for Korean automotive press lines, food processing equipment, and outdoor industrial installations where IP54 splash protection is inadequate.<\/p>\n

The high torsional stiffness (up to 130 N\u00b7m\/arcmin for the 190-frame 1-stage unit, versus 38 N\u00b7m\/arcmin for EP-ZDE-160) is achieved through reinforced bearing support, larger-diameter internal gears, and a stiffer output shaft cross-section. This stiffness directly reduces angular deflection under peak torque, which is the primary source of dynamic positioning error in heavy-load servo axes \u2014 particularly relevant for Korean heavy robot joint drives and large CNC pallet-changer drives where peak torque during acceleration determines the axis accuracy specification.<\/p>\n

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\ud83d\udcaa 1,800 N\u00b7m<\/div>\n
2.25\u00d7 the 800 N\u00b7m ceiling of EP-ZDE\/ZDF-160.<\/div>\n<\/div>\n
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\ud83d\udee1\ufe0f IP65 Sealed<\/div>\n
Water-jet protected \u2014 upgrades from IP54 of other EP series.<\/div>\n<\/div>\n
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\u2195 28,000 N Axial<\/div>\n
9.3\u00d7 the 3,000 N of EP-ZDE-160 for thrust-load axes.<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n

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EP-ZDS 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
Suhe<\/th>\nStage<\/th>\nZDS-115<\/th>\nZDS-142<\/th>\nZDS-190<\/th>\n<\/tr>\n<\/thead>\n
3:1<\/td>\n1<\/td>\n150<\/td>\n400<\/td>\n1,000<\/td>\n<\/tr>\n
4:1<\/td>\n1<\/td>\n200<\/td>\n560<\/td>\n1,200<\/td>\n<\/tr>\n
5:1<\/td>\n1<\/td>\n210<\/td>\n700<\/td>\n1,600<\/td>\n<\/tr>\n
8:1<\/td>\n1<\/td>\n148<\/td>\n450<\/td>\n1,000<\/td>\n<\/tr>\n
10:1<\/td>\n1<\/td>\n125<\/td>\n305<\/td>\n630<\/td>\n<\/tr>\n
12:1<\/td>\n2<\/td>\n210<\/td>\n780<\/td>\n1,500<\/td>\n<\/tr>\n
15:1<\/td>\n2<\/td>\n210<\/td>\n780<\/td>\n1,500<\/td>\n<\/tr>\n
16:1<\/td>\n2<\/td>\n260<\/td>\n910<\/td>\n1,800<\/td>\n<\/tr>\n
20:1<\/td>\n2<\/td>\n260<\/td>\n910<\/td>\n1,800<\/td>\n<\/tr>\n
25:1<\/td>\n2<\/td>\n210<\/td>\n780<\/td>\n1,800<\/td>\n<\/tr>\n
32:1<\/td>\n2<\/td>\n260<\/td>\n910<\/td>\n1,800<\/td>\n<\/tr>\n
40:1<\/td>\n2<\/td>\n210<\/td>\n780<\/td>\n1,800<\/td>\n<\/tr>\n
64:1<\/td>\n2<\/td>\n148<\/td>\n450<\/td>\n1,000<\/td>\n<\/tr>\n
100:1<\/td>\n2<\/td>\n125<\/td>\n305<\/td>\n630<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
\u25b8 Instant stop torque = 2\u00d7 rated. Maximum ratio 100:1 (2-stage). No 3-stage available. <\/span>ZDS-190 max input speed 3,000 rpm (recommended 2,000 rpm); ZDS-115 and ZDS-142 max 4,500 rpm (recommended 3,000 rpm).<\/span><\/div>\n

\u2461 Load Capacity, Stiffness, Efficiency & Weight<\/h3>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Parameter<\/th>\n\u00dchik<\/th>\nZDS-115<\/th>\nZDS-142<\/th>\nZDS-190<\/th>\n<\/tr>\n<\/thead>\n
Max radial force<\/td>\nN<\/td>\n4,300<\/td>\n8,200<\/td>\n12,000<\/td>\n<\/tr>\n
Max axial force<\/td>\nN<\/td>\n12,000<\/td>\n19,000<\/td>\n28,000<\/td>\n<\/tr>\n
Torsional stiffness \u2014 1-stage<\/td>\nN\u00b7m\/arcmin<\/td>\n20<\/td>\n44<\/td>\n130<\/td>\n<\/tr>\n
Torsional stiffness \u2014 2-stage<\/td>\nN\u00b7m\/arcmin<\/td>\n22<\/td>\n46<\/td>\n140<\/td>\n<\/tr>\n
Efficiency \u2014 1-stage<\/td>\n%<\/td>\n96<\/td>\n<\/tr>\n
Efficiency \u2014 2-stage<\/td>\n%<\/td>\n94<\/td>\n<\/tr>\n
Weight \u2014 1-stage<\/td>\nkg<\/td>\n9<\/td>\n15.4<\/td>\n33.5<\/td>\n<\/tr>\n
Weight \u2014 2-stage<\/td>\nkg<\/td>\n11.6<\/td>\n18.5<\/td>\n45<\/td>\n<\/tr>\n
Noise (idle)<\/td>\ndB(A)<\/td>\n65<\/td>\n68<\/td>\n70<\/td>\n<\/tr>\n
Maksimaalne sisendkiirus<\/td>\np\/min<\/td>\n4,500<\/td>\n4,500<\/td>\n3,000<\/td>\n<\/tr>\n
Recommended input speed<\/td>\np\/min<\/td>\n3,000<\/td>\n3,000<\/td>\n2,000<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

\u2462 Backlash by Frame & Stage<\/h3>\n
\n\n\n\n\n\n\n
Stage<\/th>\n\u00dchik<\/th>\nZDS-115<\/th>\nZDS-142<\/th>\nZDS-190<\/th>\n<\/tr>\n<\/thead>\n
Backlash \u2014 1-stage<\/td>\nkaarmin<\/td>\n<8<\/td>\n<8<\/td>\n<8<\/td>\n<\/tr>\n
Backlash \u2014 2-stage<\/td>\nkaarmin<\/td>\n<12<\/td>\n<12<\/td>\n<12<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
\u25b8 Same <8 arcmin backlash as EP-ZDE\/ZDF \u2014 at 1,800 N\u00b7m. <\/span>The EP-ZDS delivers the same sub-8-arcmin precision as the standard EP-ZDE\/ZDF series, but at 2.25\u00d7 the torque capacity. This distinguishes EP-ZDS from heavy-duty worm gear or helical gear reducers that trade precision for torque \u2014 EP-ZDS retains <8 arcmin at all three frame sizes on single-stage configurations.<\/span><\/div>\n

\u2463 General Specifications<\/h3>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Parameter<\/th>\nSpetsifikatsioon<\/th>\n<\/tr>\n<\/thead>\n
T\u00f6\u00f6temperatuur<\/td>\n\u221225\u00b0C to +90\u00b0C<\/td>\n<\/tr>\n
Protection rating<\/td>\nIP65 (IEC 60529) \u2014 fully dust-tight, protected against water jets from any direction<\/td>\n<\/tr>\n
M\u00e4\u00e4rimine<\/td>\nLifetime lubrication \u2014 factory-sealed, no re-greasing required<\/td>\n<\/tr>\n
Mounting orientation<\/td>\nAny \u2014 horizontal, vertical shaft-up\/down, inverted, any inclined angle<\/td>\n<\/tr>\n
Output flange<\/td>\nSquare flange \u2014 \u25a1115, \u25a1142, \u25a1190 mm with through-hole output shaft<\/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<\/td>\n<\/tr>\n
Backlash measurement standard<\/td>\nMeasured at \u00b13% of allowable output torque on output shaft<\/td>\n<\/tr>\n
Rated service life<\/td>\n20,000 hours at rated load (L10 bearing life)<\/td>\n<\/tr>\n
Kohene peatumismoment<\/td>\n2\u00d7 rated output torque<\/td>\n<\/tr>\n
Additional feature<\/td>\nL13\/L14 process groove design on 115 and 142-frame for precision assembly alignment<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/section>\n

<\/p>\n

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

EP-ZDS uses a square output flange with a through-hole output shaft \u2014 different from the solid shaft of EP-ZDE\/ZDF. The larger D4 output shaft diameters (\u03a632\u2013\u03a655h7) and D8 bolt-hole PCDs reflect the significantly higher load ratings.<\/p>\n

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

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Dimension<\/th>\n115ZDS<\/th>\n142ZDS<\/th>\n190ZDS<\/th>\n<\/tr>\n<\/thead>\n
Overall length L1 \u2014 1-stage<\/td>\n213<\/td>\n289<\/td>\n308.5<\/td>\n<\/tr>\n
Overall length L1 \u2014 2-stage<\/td>\n246.5<\/td>\n338.5<\/td>\n356<\/td>\n<\/tr>\n
Square housing size D7<\/td>\n\u25a1115<\/td>\n\u25a1142<\/td>\n\u25a1190<\/td>\n<\/tr>\n
Output shaft diameter D4<\/td>\n\u03a632h7<\/td>\n\u03a640h7<\/td>\n\u03a655h7<\/td>\n<\/tr>\n
Shaft shoulder diameter D5<\/td>\n\u03a655<\/td>\n\u03a665<\/td>\n\u03a695<\/td>\n<\/tr>\n
Mounting hole PCD D8<\/td>\n\u03a6130<\/td>\n\u03a6165<\/td>\n\u03a6215<\/td>\n<\/tr>\n
Output flange thickness L11<\/td>\n14<\/td>\n20<\/td>\n20<\/td>\n<\/tr>\n
Output shaft length L4<\/td>\n64.5<\/td>\n87<\/td>\n90<\/td>\n<\/tr>\n
Input flange length L2<\/td>\n71<\/td>\n100<\/td>\n105<\/td>\n<\/tr>\n
Input mounting PCD D1<\/td>\n\u03a6145<\/td>\n\u03a6200<\/td>\n\u03a6215<\/td>\n<\/tr>\n
Input flange Q3 (square)<\/td>\n\u25a1130<\/td>\n\u25a1175<\/td>\n\u25a1190<\/td>\n<\/tr>\n
Process groove L13 (115\/142-frame)<\/td>\n34 \/ 67.5<\/td>\n52 \/ 101.5<\/td>\n\u2014<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
\u25b8 Green rows highlight ZDS-specific dimensions that differ significantly from EP-ZDE\/ZDF. <\/span>The 190ZDS D4 = \u03a655h7 is 37.5% larger in diameter than EP-ZDE-160 (\u03a640h7), providing substantially higher output shaft bending stiffness. Input-end dimensions are manufactured to match the specific servo motor model \u2014 provide motor model number when ordering. ZDS-190 input Q3 = \u25a1190 mm accepts large servo motors up to 5,500 W commonly used in Korean heavy robot and press applications.<\/span><\/div>\n<\/section>\n
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EP-ZDS vs EP-ZDE\/ZDF \u2014 The Four Reasons to Upgrade to High-Stiffness<\/h2>\n

\"Planaarsed<\/p>\n

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EP-ZDE\/ZDF PRECISION SERIES \u2014 UPPER LIMITS<\/p>\n

Max torque (160-frame): 800 N\u00b7m
\nMax axial force (160): 3,000 N
\nTorsional stiffness: 38 N\u00b7m\/arcmin
\nProtection: IP54
\nFrame range: 40\u2013160 mm<\/div>\n

EP-ZDS HIGH-STIFFNESS \u2014 CAPABILITIES \u2605<\/p>\n

Max torque (190-frame): 1,800 N\u00b7m \u21912.25\u00d7
\nMax axial force (190): 28,000 N \u21919.3\u00d7
\nTorsional stiffness: 130 N\u00b7m\/arcmin \u21913.4\u00d7
\nProtection: IP65 (water-jet)
\nFrame range: 115\u2013190 mm<\/div>\n<\/div>\n<\/div>\n
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Four Engineering Situations That Require EP-ZDS<\/h3>\n
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\u2460 Output Torque Exceeds 800 N\u00b7m \u2014 EP-ZDE\/ZDF Has No Higher Frame<\/strong><\/p>\n

EP-ZDE and EP-ZDF max out at 800 N\u00b7m (160-frame, 16:1 or 20:1 two-stage). Applications requiring higher output torque \u2014 large industrial robot base joint drives (typically 900\u20131,500 N\u00b7m at the J1 joint for Korean 100\u2013200 kg payload robots), heavy CNC pallet changer servo drives, and servo press main reduction stages above 800 N\u00b7m \u2014 have no option within the precision series. EP-ZDS planetaarne k\u00e4igukast<\/strong> starts at 125 N\u00b7m and scales to 1,800 N\u00b7m at the 190-frame, covering the torque range from where EP-ZDE\/ZDF ends to the heavy industrial automation ceiling in the Korea Ever-Power range.<\/p>\n<\/div>\n

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\u2461 Axial Load Exceeds 3,000 N \u2014 Thrust Axes and Vertical Drive Applications<\/strong><\/p>\n

Applications where the output shaft carries significant axial (thrust) load \u2014 Z-axis servo drives on heavy gantry machines where the spindle weight acts axially on the gearbox output, hydraulic press backup servo axes where the cylinder back-pressure creates axial thrust, and vertical conveyor drives where the loaded belt tension acts in the shaft axis direction \u2014 quickly exceed the 3,000 N limit of EP-ZDE-160. EP-ZDS-190 handles 28,000 N axial force \u2014 covering Korean heavy gantry machining Z-axes and vertical elevator-type industrial conveyors that generate 5,000\u201320,000 N of sustained axial load on the gearbox output shaft.<\/p>\n<\/div>\n

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\u2462 IP65 Required \u2014 Washdown, Water-Jet, or Immersion-Adjacent Environments<\/strong><\/p>\n

Korean automotive body-shop press lines, food processing equipment under HACCP washdown protocols, and outdoor construction machinery drives operate in environments where direct water-jet cleaning is applied to the machine \u2014 frequently to adjacent components and sometimes to the gearbox itself. IP54 (EP-ZDE\/ZDF) resists splashing from any direction but cannot withstand a direct water jet. EP-ZDS IP65 sealing (IEC 60529) withstands water projected by a nozzle (6.3 mm nozzle, 12.5 L\/min flow rate, from any direction) \u2014 meeting the washdown requirements of Korean HACCP-certified food processing plants and automotive press line cleaning procedures without requiring additional protective covers around the gearbox.<\/p>\n<\/div>\n

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\u2463 High Torsional Stiffness Required \u2014 Dynamic Accuracy Under Peak Torque<\/strong><\/p>\n

In servo-driven axes where the load torque varies rapidly \u2014 robot arm acceleration\/deceleration cycles, CNC contouring axes with high-frequency direction reversals, and servo press drives with impact loading at the bottom of stroke \u2014 the gearbox torsional deflection under peak torque adds directly to the axis positioning error. At 38 N\u00b7m\/arcmin (EP-ZDE-160), a peak torque of 380 N\u00b7m produces 10 arcmin (0.17\u00b0) of elastic deflection at the output shaft. At 130 N\u00b7m\/arcmin (EP-ZDS-190), the same 380 N\u00b7m peak produces only 2.9 arcmin \u2014 a 70% reduction in dynamic deflection error. Korean heavy robot and precision press engineers specify EP-ZDS when the torsional deflection under peak load exceeds the axis accuracy budget.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

EP-ZDS vs EP-ZDE\/ZDF \u2014 Head-to-Head Comparison at Maximum Frame<\/h3>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Parameter<\/th>\nEP-ZDE\/ZDF-160<\/a> (max precision)<\/th>\nEP-ZDS-190 \u2605 (max high-stiffness)<\/th>\n<\/tr>\n<\/thead>\n
Max rated output torque<\/td>\n800 N\u00b7m<\/td>\n1,800 N\u00b7m \u2014 2.25\u00d7 higher<\/td>\n<\/tr>\n
Max axial force<\/td>\n3,000 N<\/td>\n28,000 N \u2014 9.3\u00d7 higher<\/td>\n<\/tr>\n
Max radial force<\/td>\n6,000 N<\/td>\n12,000 N \u2014 2\u00d7 higher<\/td>\n<\/tr>\n
Torsional stiffness (1-stage)<\/td>\n38 N\u00b7m\/arcmin<\/td>\n130 N\u00b7m\/arcmin \u2014 3.4\u00d7 higher<\/td>\n<\/tr>\n
IP protection<\/td>\nIP54 \u2014 splash<\/td>\nIP65 \u2014 water-jet<\/td>\n<\/tr>\n
Output shaft diameter D4<\/td>\n\u03a640h7<\/td>\n\u03a655h7 \u2014 larger shaft, higher bending capacity<\/td>\n<\/tr>\n
Backlash (1-stage)<\/td>\n<8 arcmin (frame 60\u2013160)<\/td>\n<8 arcmin \u2014 identical precision<\/td>\n<\/tr>\n
1-stage efficiency<\/td>\n96%<\/td>\n96% \u2014 identical<\/td>\n<\/tr>\n
Maksimaalne sisendkiirus<\/td>\n4,500 rpm<\/td>\n3,000 rpm (190-frame) \u2014 lower for heavy frame<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/section>\n

 <\/p>\n

<\/p>\n

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Installation Guide \u2014 EP-ZDS High-Stiffness Heavy-Load Series<\/h2>\n
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Square Flange Mounting \u2014 Any Orientation, IP65 Sealing Maintained<\/h3>\n

EP-ZDS mounts via its square output flange face, identical in principle to EP-ZDF. The significantly larger flange dimensions, higher bolt torque requirements, and IP65 sealing protocol require specific attention during installation to maintain the IP65 rating under field conditions.<\/p>\n

\"Planerary<\/p>\n

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1<\/div>\n

Pre-Installation Verification<\/strong><\/p>\n<\/div>\n

Confirm the EP-ZDS frame size (115\/142\/190), gear ratio, square housing size D7, and input flange Q3 matches the servo motor. Check that the output shaft D4 matches your coupling bore (\u03a632\/\u03a640\/\u03a655h7). For IP65 applications: inspect the output shaft lip seal and housing gasket for damage before installation \u2014 any compromise to these seals will reduce the protection rating.<\/p>\n<\/div>\n

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2<\/div>\n

Motor Coupling \u2014 Heavy-Frame Clamping Input<\/strong><\/p>\n<\/div>\n

Insert the servo motor shaft fully into the input bore \u2014 for ZDS-190, the input bore accommodates large servo motors up to 5,500 W. Tighten S-type clamping screws in a cross pattern to the specified torque. For high-torque applications (ZDS-190 at 1,800 N\u00b7m), verify the motor shaft is fully engaged to the maximum depth L2 before tightening \u2014 partial shaft engagement reduces the effective clamping length and the maximum transmissible torque.<\/p>\n<\/div>\n

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3<\/div>\n

Machine Frame Preparation \u2014 Heavy-Load Plate<\/strong><\/p>\n<\/div>\n

The machine plate must be rated for the significantly higher loads of EP-ZDS. For ZDS-190 at 1,800 N\u00b7m rated torque, the machine plate material and thickness should be engineered to handle 3,600 N\u00b7m instant stop torque plus the radial and axial loads. Plate flatness: 0.02 mm across the full flange face. Use class 10.9 bolts for all ZDS frame sizes \u2014 class 8.8 is insufficient for the maximum rated torque at 115-frame and above.<\/p>\n<\/div>\n

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4<\/div>\n

Flange Mounting \u2014 4-Bolt, Class 10.9<\/strong><\/p>\n<\/div>\n

Install class 10.9 bolts through the flange holes and torque evenly in a cross pattern \u2014 recommended bolt torque for the PCD and bolt diameter is significantly higher than for EP-ZDF at equivalent frame sizes, reflecting the higher rated torque. For IP65 washdown environments, apply thread-locking compound to all mounting bolts and consider a thread seal for bolt holes that penetrate into the machine structure cavity where wash water could ingress.<\/p>\n<\/div>\n

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5<\/div>\n

Output Shaft Connection \u2014 Large Coupling<\/strong><\/p>\n<\/div>\n

Connect the load via a heavy-duty coupling on the h7 output shaft. For ZDS-190 (D4 = \u03a655h7), warm the coupling hub to 100\u2013120\u00b0C before pressing \u2014 the larger interference fit requires higher press force than smaller-frame units. Confirm axial load does not exceed 28,000 N for ZDS-190 measured at shaft centre L4\/2. For vertical axes with gravity loads acting axially, calculate the sustained axial force including motor rotor weight and coupling hub weight.<\/p>\n<\/div>\n

\n
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6<\/div>\n

Run-In, Load Test & IP65 Verification<\/strong><\/p>\n<\/div>\n

Run no-load for 60 minutes at \u226450% rated input speed (heavier gear masses require longer run-in). Gradually increase to rated load over the first 4 hours of operation. For IP65 applications: after the first washdown cycle, inspect the output shaft lip seal and housing joint for any sealing failure. Re-torque the 4 mounting bolts after the first full thermal cycle. Verify system backlash and record as baseline \u2014 for heavy robot joints, verify with the joint under rated static load to confirm torsional deflection is within specification.<\/p>\n<\/div>\n<\/div>\n

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\u26a0 Heavy-Load Installation Cautions:<\/strong> EP-ZDS handles significantly higher torques and forces than EP-ZDE\/ZDF \u2014 ensure all connected mechanical structure, fasteners, and machine frame members are rated for the ZDS maximum load conditions including the 2\u00d7 instant stop torque. Use class 10.9 bolts only \u2014 class 8.8 is undersized for ZDS-115 and above at maximum rated torque. ZDS-190 maximum input speed is 3,000 rpm (not 4,500 rpm) \u2014 do not exceed this limit. Do not attempt external lubrication \u2014 the IP65-sealed housing has no lubrication port.<\/p>\n<\/div>\n

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\u2714 IP65 + Lifetime Lubrication:<\/strong> The EP-ZDS factory-sealed design provides IP65 water-jet protection and lifetime lubrication in a single sealed unit. In washdown environments, confirm the servo motor’s IP rating matches the application requirement \u2014 the gearbox IP65 sealing only protects the gearbox body. Motor cable entry points and cable chain sealing must be separately addressed. No re-greasing required \u2014 the IP65 housing has no grease port and cannot be re-lubricated in the field.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

<\/p>\n

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Applications \u2014 EP-ZDS High-Stiffness Planetary Gearbox in Korean Heavy Industry<\/h2>\n
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Heavy Industrial Robot Joints \u2014 Base (J1) and Waist (J2) Axes<\/h3>\n

Korean heavy industrial robot manufacturers building 100\u2013200 kg payload robots for automotive body-shop welding, heavy press loading, and large-part assembly use EP-ZDS-142 and EP-ZDS-190 for the base (J1) and waist (J2) joint drives. A 150 kg payload Korean industrial robot J1 joint typically requires 900\u20131,400 N\u00b7m continuous torque and peak torque up to 2,800 N\u00b7m during emergency stop \u2014 within the EP-ZDS-190 2\u00d7 instant stop torque of 3,600 N\u00b7m. The 130 N\u00b7m\/arcmin torsional stiffness (190-frame, 1-stage) minimises angular deflection at the J1 joint during high-speed payload acceleration, directly affecting the robot’s TCP (tool centre point) path accuracy. IP65 protection covers these robots’ installation in Korean automotive body-shop environments subject to weld spatter and periodic coolant washdown.<\/p>\n<\/div>\n

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Large CNC Pallet Changers & Rotary Tables \u2014 Heavy Workpiece Drives<\/h3>\n

Korean large-format machining centre manufacturers building pallet changer systems for 500\u20132,000 kg workpieces use EP-ZDS-190 for the pallet indexing drive. A 1,000 kg pallet at 600 mm radius generates 6,000 N\u00b7m of gravitational torque during pallet tipping \u2014 requiring an instantaneous torque capacity of at least 6,000 N\u00b7m in the drive. EP-ZDS-190 at 20:1 two-stage delivers 1,800 N\u00b7m rated torque with 3,600 N\u00b7m instant stop capacity; combined with a higher-ratio motor, the total system torque capacity covers the pallet tipping load with a dynamic safety factor. The 28,000 N axial force capacity of ZDS-190 absorbs the pallet weight acting axially through the rotary index axis when the pallet is in the vertical orientation during changeover.<\/p>\n<\/div>\n

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Servo Press Main Drive \u2014 IP65 for Stamping Environment<\/h3>\n

Korean automotive tier-1 stamping press OEMs and retrofit press builders use EP-ZDS-142 and EP-ZDS-190 for the main eccentric shaft servo drive reduction stage on 250\u2013500 tonne servo presses. Stamping press environments involve metal forming lubricant mist, hydraulic oil spray, and periodic machine cleaning \u2014 conditions that defeat IP54 sealing over time. EP-ZDS IP65 provides reliable protection against direct lubricant spray and machine washing procedures. At 1,800 N\u00b7m (ZDS-190), the gearbox output drives the press eccentric shaft via a coupling, with the 140 N\u00b7m\/arcmin two-stage torsional stiffness minimising angular deflection error at the press ram during the stamping impact at bottom of stroke \u2014 directly affecting the stamped part dimensional repeatability.<\/p>\n<\/div>\n

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Automated Guided Vehicle Heavy-Payload Drive \u2014 High Axial Load<\/h3>\n

Korean heavy-payload AGV manufacturers building load carriers for 5,000\u201320,000 kg warehouse loads \u2014 steel coil transporters, automotive body pallet AGVs, and heavy industrial parts carriers \u2014 use EP-ZDS-142 and EP-ZDS-190 for the drive wheel servo reductions. The 28,000 N axial force capacity of ZDS-190 handles the axial (vertical) load component from the AGV drive wheel bearing the vehicle gross weight directly through the gearbox output shaft. At 4,500 kg vehicle weight on a single drive unit, the static axial force on the output shaft bearing is approximately 22,000 N \u2014 within the ZDS-190 axial capacity with a safety margin. For the right-angle motor configuration needed in low-profile heavy AGV designs, contact Korea Ever-Power for the combined ZDS + ZDWE custom configuration.<\/p>\n<\/div>\n

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Food & Beverage Processing \u2014 IP65 Washdown Drive Axes<\/h3>\n

Korean food processing OEMs building high-torque servo-driven mixing, kneading, and extrusion equipment under HACCP and Korean Food Safety certification requirements specify EP-ZDS for the main drive reduction stage. HACCP washdown protocols call for high-pressure water-jet cleaning of all machine surfaces \u2014 including the drive gearbox. EP-ZDS IP65 sealing withstands the direct water-jet cleaning cycle required under Korean HACCP standards without ingress into the gearbox. The lifetime sealed lubrication provides the additional compliance benefit of zero grease leakage risk onto food-contact surfaces, which would require a production halt and sanitation event under Korean food safety regulations.<\/p>\n<\/div>\n

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Wind & Renewable Energy \u2014 Yaw & Pitch Drive Reduction<\/h3>\n

Korean wind turbine component manufacturers and renewable energy equipment builders specify EP-ZDS-190 for the servo-driven yaw axis and blade pitch adjustment drives on small-to-medium wind turbines (100\u2013750 kW class) installed at Korean coastal and mountain ridge sites. EP-ZDS-190 at 1,800 N\u00b7m provides the continuous yaw torque required to rotate the turbine nacelle at 2\u20135 rpm against wind load, while IP65 sealing addresses the high-humidity and rain exposure at outdoor Korean turbine installations. The \u221225\u00b0C to +90\u00b0C operating range covers Korean mountain winter conditions at yaw bearing installation heights. For large-format solar tracker azimuth drives at utility-scale Korean solar farms, EP-ZDS-142 at 780\u2013910 N\u00b7m two-stage covers the typical single-row tracker drive torque budget with the IP65 outdoor protection that IP54 cannot provide in Korean coastal locations with salt spray.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

\"Planetary<\/p>\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