{"id":1923,"date":"2026-05-27T06:45:23","date_gmt":"2026-05-27T06:45:23","guid":{"rendered":"https:\/\/chinawormgearbox.xyz\/product\/wpeds-flange-mounted-double-speed-worm-gear-reducer-with-cooling-fins\/"},"modified":"2026-05-27T06:45:23","modified_gmt":"2026-05-27T06:45:23","slug":"wpeds-flange-mounted-double-speed-worm-gear-reducer-with-cooling-fins","status":"publish","type":"product","link":"https:\/\/chinawormgearbox.xyz\/pl\/product\/wpeds-flange-mounted-double-speed-worm-gear-reducer-with-cooling-fins\/","title":{"rendered":"WPEDS Flange-Mounted Double Speed Worm Gear Reducer with Cooling Fins"},"content":{"rendered":"
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WPEDS Flange-Mounted Double Speed Worm Gear Reducer with Cooling Fins \u2014 The Complete Thermal Solution for Motor-Direct Two-Stage Continuous Industrial Drives<\/h1>\n

A motor-direct two-stage worm gearbox operating at 1\/600\u20131\/900 ratio in a chemical plant, rubber factory, or continuous process line presents the ultimate thermal challenge: motor heat and two gear-mesh heat loads are all generated simultaneously in a compact enclosed assembly. The WPEDS flange-mounted double speed worm gear reducer with cooling fins<\/strong> is the purpose-designed answer \u2014 combining IEC motor direct mounting, two-stage ultra-high ratio reduction, and an integral cooling fin array in a single cast iron unit.<\/p>\n

The WPEDS maintains oil sump temperatures approximately 18\u00b0C lower<\/strong> than the equivalent smooth-body WPEDA at rated load \u2014 the most critical thermal margin available for rubber, plastics, and continuous chemical process industries where an overtemperature stop costs thousands in batch losses. Available in 9 size groups<\/strong>, motors 0.12\u20135.5 kW, ratios 1\/200\u20131\/900. O Ever-power<\/a> | Request Thermal Assessment<\/a><\/p>\n<\/section>\n

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Technical Specifications<\/h2>\n

WPEDS shares the WPEDA base footprint with increased HL due to integral fins. Motor flange: LA, LB, LC, LE, LZ per IEC 60034-7. Input hole: Q, U, T\u00d7V. Output: LS, S, W\u00d7Y. Reference speed 1500 r\/min<\/strong>. All dimensions in mm.<\/p>\n

\"WPEDS<\/div>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Size<\/th>\nPower(kW)<\/th>\nRatio<\/th>\nA<\/th>\nAB<\/th>\nBB<\/th>\nBE<\/th>\nHL<\/th>\nLL<\/th>\nH<\/th>\nM<\/th>\nN<\/th>\nE<\/th>\nF<\/th>\nG<\/th>\nZ<\/th>\nLA<\/th>\nLB<\/th>\nLC<\/th>\nLE<\/th>\nLZ<\/th>\nQ<\/th>\nU<\/th>\nT\u00d7V<\/th>\nLS<\/th>\nS<\/th>\nW\u00d7Y<\/th>\nWt(kg)<\/th>\n<\/tr>\n<\/thead>\n
40-70<\/td>\n0.12<\/td>\n1\/200\u20131\/900<\/td>\n314<\/td>\n153<\/td>\n131<\/td>\n75<\/td>\n215<\/td>\n105<\/td>\n238<\/td>\n150<\/td>\n190<\/td>\n115<\/td>\n150<\/td>\n20<\/td>\n15<\/td>\n115<\/td>\n95<\/td>\n140<\/td>\n4<\/td>\nM8<\/td>\n31<\/td>\n11<\/td>\n4\u00d712.8<\/td>\n60<\/td>\n28<\/td>\n7\u00d74<\/td>\n19<\/td>\n<\/tr>\n
50-80<\/td>\n0.18<\/td>\n<\/td>\n314<\/td>\n144<\/td>\n142<\/td>\n83<\/td>\n130<\/td>\n160<\/td>\n268<\/td>\n170<\/td>\n220<\/td>\n135<\/td>\n180<\/td>\n20<\/td>\n15<\/td>\n115<\/td>\n95<\/td>\n140<\/td>\n4<\/td>\nM8<\/td>\n31<\/td>\n14<\/td>\n4\u00d712.8<\/td>\n65<\/td>\n32<\/td>\n10\u00d74.5<\/td>\n27<\/td>\n<\/tr>\n
60-100<\/td>\n0.37<\/td>\n1\/200<\/td>\n387<\/td>\n175<\/td>\n169<\/td>\n91<\/td>\n310<\/td>\n150<\/td>\n334<\/td>\n190<\/td>\n270<\/td>\n155<\/td>\n220<\/td>\n25<\/td>\n15<\/td>\n130<\/td>\n110<\/td>\n160<\/td>\n4<\/td>\nM8<\/td>\n33<\/td>\n14<\/td>\n5\u00d716.3<\/td>\n75<\/td>\n38<\/td>\n10\u00d74.5<\/td>\n45<\/td>\n<\/tr>\n
70-120<\/td>\n0.37\/0.75<\/td>\n1\/300\u20131\/400<\/td>\n445\/425<\/td>\n193<\/td>\n190<\/td>\n109\/111<\/td>\n370<\/td>\n180<\/td>\n423<\/td>\n230<\/td>\n320<\/td>\n180<\/td>\n260<\/td>\n30<\/td>\n18<\/td>\n130\/165<\/td>\n110\/130<\/td>\n160\/200<\/td>\n4<\/td>\nM8\/M10<\/td>\n40\/42<\/td>\n14\/19<\/td>\n5\u00d716.3\/6\u00d721.8<\/td>\n85<\/td>\n45<\/td>\n12\u00d74.5<\/td>\n75<\/td>\n<\/tr>\n
80-135<\/td>\n0.75\/1.5<\/td>\n1\/500\u20131\/600<\/td>\n499<\/td>\n226<\/td>\n210<\/td>\n125<\/td>\n430<\/td>\n215<\/td>\n482<\/td>\n250<\/td>\n350<\/td>\n200<\/td>\n290<\/td>\n30<\/td>\n18<\/td>\n165<\/td>\n130<\/td>\n200<\/td>\n4.5<\/td>\nM10<\/td>\n48\/52<\/td>\n19\/24<\/td>\n6\u00d721.8\/8\u00d727.3<\/td>\n95<\/td>\n55<\/td>\n16\u00d76<\/td>\n103<\/td>\n<\/tr>\n
100-155<\/td>\n1.5<\/td>\n1\/800<\/td>\n570<\/td>\n269<\/td>\n252<\/td>\n148<\/td>\n490<\/td>\n235<\/td>\n541<\/td>\n275<\/td>\n390<\/td>\n220<\/td>\n320<\/td>\n35<\/td>\n21<\/td>\n165<\/td>\n130<\/td>\n200<\/td>\n4.5<\/td>\nM10<\/td>\n52<\/td>\n24<\/td>\n8\u00d727.3<\/td>\n110<\/td>\n60<\/td>\n18\u00d77<\/td>\n147<\/td>\n<\/tr>\n
120-175<\/td>\n2.2\/3.0<\/td>\n1\/900<\/td>\n631<\/td>\n287<\/td>\n255<\/td>\n181<\/td>\n555<\/td>\n260<\/td>\n600<\/td>\n310<\/td>\n430<\/td>\n250<\/td>\n350<\/td>\n40<\/td>\n21<\/td>\n215<\/td>\n180<\/td>\n250<\/td>\n5<\/td>\nM12<\/td>\n63<\/td>\n28<\/td>\n8\u00d731.3<\/td>\n110<\/td>\n65<\/td>\n18\u00d77<\/td>\n204<\/td>\n<\/tr>\n
135-200<\/td>\n3.0\/4.0<\/td>\n<\/td>\n580<\/td>\n318<\/td>\n319<\/td>\n202<\/td>\n625<\/td>\n290<\/td>\n677<\/td>\n360<\/td>\n480<\/td>\n290<\/td>\n390<\/td>\n40<\/td>\n24<\/td>\n215<\/td>\n180<\/td>\n250<\/td>\n5<\/td>\nM12<\/td>\n63<\/td>\n28<\/td>\n8\u00d731.3<\/td>\n125<\/td>\n70<\/td>\n20\u00d77.5<\/td>\n298<\/td>\n<\/tr>\n
155-250<\/td>\n5.5<\/td>\n<\/td>\n815<\/td>\n380<\/td>\n385<\/td>\n247<\/td>\n755<\/td>\n350<\/td>\n824<\/td>\n460<\/td>\n560<\/td>\n380<\/td>\n480<\/td>\n45<\/td>\n28<\/td>\n265<\/td>\n230<\/td>\n300<\/td>\n5<\/td>\nM12<\/td>\n83<\/td>\n38<\/td>\n10\u00d741.3<\/td>\n155<\/td>\n90<\/td>\n25\u00d79<\/td>\n470<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

* HL = total housing height including fin array. WPEDS and WPEDA share identical base footprint, flange dimensions, and shaft dimensions \u2014 WPEDS is a direct thermal upgrade for existing WPEDA installations where adequate vertical clearance exists.<\/p>\n<\/section>\n

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Product Structure \u2014 Triple-Feature Two-Stage Design<\/h2>\n
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\"WPEDS<\/div>\n
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The WPEDS integrates three features in a single FC25 cast iron two-stage housing: an IEC motor flange at the input, two serial worm-and-wheel stages delivering 1\/200\u20131\/900 combined ratio, and cast-integral longitudinal cooling fins on the top and side faces. All three features are part of the single casting \u2014 no bolt-on accessories, no secondary bonding, no vibration risk at any component interface.<\/p>\n\n\n\n\n\n\n\n
Feature 1<\/td>\nIEC 60034-7 motor flange \u2014 motor shaft direct, no input coupling<\/td>\n<\/tr>\n
Feature 2<\/td>\nTwo worm-and-wheel stages in series \u2014 ratio 1\/200\u20131\/900<\/td>\n<\/tr>\n
Feature 3<\/td>\nCast-integral fins \u2014 ~18\u00b0C lower sustained temperature vs WPEDA<\/td>\n<\/tr>\n
Thermal Benefit<\/td>\nManages heat from motor + two gear stages simultaneously<\/td>\n<\/tr>\n
Housing<\/td>\nFC25 cast iron; all three features integral \u2014 same footprint as WPEDA<\/td>\n<\/tr>\n
Output<\/td>\nSolid shaft with keyway; 5 direction positions (A\u2013E)<\/td>\n<\/tr>\n<\/table>\n<\/div>\n<\/div>\n<\/section>\n
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\u2705 Key Features & Benefits<\/h2>\n
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01<\/span><\/p>\n

Three Heat Sources \u2014 One Thermal Solution<\/h3>\n

A motor-direct two-stage drive generates heat from three simultaneous sources: the motor winding, the first-stage gear mesh, and the second-stage gear mesh. The WPEDS fin array is sized to manage all three heat contributions together, maintaining stable oil sump temperature at rated load and up to 45\u00b0C ambient without supplemental cooling. Keywords: motor-direct finned two-stage worm gearbox, thermal double speed reducer.<\/em><\/p>\n<\/div>\n

02<\/span><\/p>\n

~18\u00b0C Lower Temperature vs WPEDA<\/h3>\n

At rated load and 40\u00b0C ambient, the WPEDS maintains oil sump temperature approximately 18\u00b0C lower than the smooth-body WPEDA. In rubber vulcanisation and plastics processing environments where ambient temperatures regularly reach 45\u00b0C+, this margin keeps the WPEDS safely below the 95\u00b0C oil temperature limit where the WPEDA may reach it under full load.<\/p>\n<\/div>\n

03<\/span><\/p>\n

IEC Flange for Rapid Motor Swap<\/h3>\n

The IEC 60034-7 pilot register allows motor replacement in 15\u201320 minutes in rubber and plastics plant environments where emergency motor changes during production runs must be completed without batch loss. No coupling to remove, no alignment to re-check \u2014 motor slides out, new motor slides in.<\/p>\n<\/div>\n

04<\/span><\/p>\n

Cast-Integral Fins \u2014 Permanent Thermal Performance<\/h3>\n

Fins are integral to the housing casting, ensuring permanent thermal performance with no risk of fin separation under the vibration and thermal cycling characteristic of rubber vulcanisation and plastics processing environments. Unlike bolt-on thermal accessories, the WPEDS fin performance cannot degrade.<\/p>\n<\/div>\n

05<\/span><\/p>\n

Drop-In Thermal Upgrade from WPEDA<\/h3>\n

WPEDS shares the identical base footprint, flange dimensions, and shaft dimensions with WPEDA. For any WPEDA installation experiencing overtemperature issues in hot process environments, the WPEDS is the minimum-disruption thermal upgrade \u2014 verify HL height clearance and swap in place.<\/p>\n<\/div>\n

06<\/span><\/p>\n

VSD\/Inverter Compatible \u2014 Thermal Headroom for Low-Speed Operation<\/h3>\n

At low VSD frequencies (20\u201335 Hz), TEFC motor cooling reduces while the two-stage gear heat generation continues at full load level \u2014 increasing the thermal burden on the gearbox. The WPEDS fin array provides additional thermal headroom for these demanding low-speed VSD operation conditions.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

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Industry Applications<\/h2>\n

The WPEDS is the premier solution when motor-direct two-stage ultra-high ratio drive must perform reliably at high duty cycles in thermally demanding environments:<\/p>\n

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Rubber & Vulcanisation Industry<\/strong>Rubber vulcanisation line transport drives, rubber compounding mill auxiliary drives, and tyre building machine slow-speed drives where combined motor and two-stage gearbox heat generation in enclosed plant rooms demands thermal management.<\/span><\/div>\n

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Plastics & Polymer Processing<\/strong>Plastic film line auxiliary drives, polymer blending vessel agitators, and continuous extruder accessory drives operating at very low speeds in warm, enclosed factory environments.<\/span><\/div>\n

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\u2697\ufe0f<\/div>\n

Chemical Process \u2014 Continuous Operation<\/strong>Continuous chemical reactor agitator drives operating at 90%+ duty cycle, polymerisation vessel drives, and specialty adhesive manufacturing vessel drives requiring ultra-low speed motor-direct two-stage drive with thermal stability.<\/span><\/div>\n

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Bioprocessing & Fermentation<\/strong>Large bioreactor and fermentation vessel agitator drives requiring very low impeller speeds, compact motor-direct mounting, and reliable thermal performance during extended 24\/7 batch production cycles.<\/span><\/div>\n

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Hot Climate Continuous Drives<\/strong>Any outdoor or poorly-ventilated industrial drive in tropical, subtropical, or Gulf region environments where ambient temperatures regularly exceed 40\u00b0C and the combined thermal load of motor and two-stage gearbox requires fin-assisted dissipation.<\/span><\/div>\n

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Battery & New Energy Manufacturing<\/strong>Electrode slurry mixing vessel drives, battery electrolyte agitation systems, and new energy material processing equipment requiring compact motor-direct ultra-low-speed drives with thermal stability.<\/span><\/div>\n<\/div>\n<\/section>\n

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Quality Control & Certification<\/h2>\n
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ISO 9001:2015 & CE<\/h3>\n

Full ISO 9001:2015 QMS. CE Declaration of Conformity per shipment. Fin casting quality inspected at foundry stage before machining commences \u2014 fin completeness, wall thickness, and geometry verified against drawing spec.<\/p>\n<\/div>\n

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\ufe0f Triple-Source Thermal Run Test<\/h3>\n

Each WPEDS undergoes a 90-minute thermal stability run<\/strong> at 110% rated torque. Oil sump temperature must stabilise below 95\u00b0C, with temperature differential between the two stage positions \u226410\u00b0C. This test validates that the fin array manages the combined three-source heat load under the most demanding rated conditions.<\/p>\n<\/div>\n

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Material & Fin Verification<\/h3>\n

Housing: FC25 cast iron (\u2265250 MPa). Both worm shafts: 20CrMnTi (\u226558 HRC). Wheel rims: ZCuSn10Pb1. IEC flange CMM verified (\u22640.05 mm TIR). Fin geometry verified at casting stage. Third-party SGS\/BV inspection available for rubber, plastics, and chemical industry quality audits.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

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Why Choose Ever-power for WPEDS Gearboxes<\/h2>\n
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\"Ever-power<\/div>\n
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We supply WPEDS triple-feature gearboxes to rubber industry equipment builders, plastics processing machinery manufacturers, and continuous chemical process OEMs in the USA, Spain, South Africa, Australia, and over 60 countries. Our 90-minute thermal stability test at 110% rated torque is a higher standard than our WPEDA test \u2014 because the WPEDS customer is one who genuinely cannot afford an overtemperature failure in their production environment.<\/p>\n