{"id":1932,"date":"2026-05-27T06:45:32","date_gmt":"2026-05-27T06:45:32","guid":{"rendered":"https:\/\/chinawormgearbox.xyz\/product\/wpedks-flange-mounted-hollow-shaft-double-speed-worm-gear-reducer-with-cooling-fins\/"},"modified":"2026-05-27T06:45:32","modified_gmt":"2026-05-27T06:45:32","slug":"wpedks-flange-mounted-hollow-shaft-double-speed-worm-gear-reducer-with-cooling-fins","status":"publish","type":"product","link":"https:\/\/chinawormgearbox.xyz\/ms\/product\/wpedks-flange-mounted-hollow-shaft-double-speed-worm-gear-reducer-with-cooling-fins\/","title":{"rendered":"WPEDKS Flange-Mounted Hollow Shaft Double Speed Worm Gear Reducer with Cooling Fins"},"content":{"rendered":"
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WPEDKS Flange-Mounted Hollow Shaft Double Speed Worm Gear Reducer with Cooling Fins \u2014 The Ultimate Specification for 24\/7 Heavy Industry Zero-Coupling Drives<\/h1>\n

The WPEDKS<\/strong> is the most fully specified product in the entire WPE double-speed range \u2014 combining four engineering features that each independently address a real heavy industry challenge: an IEC motor flange (eliminating motor coupling), a two-stage worm cascade (1\/200\u20131\/900 ultra-high ratio), an H7 hollow output bore (eliminating output coupling), and an integral cooling fin array (managing the combined heat of motor + two gear meshes). No other WPE product combines all four features simultaneously.<\/p>\n

The WPEDKS is the definitive drive for steel mill 24\/7 roller table drives, continuous paper mill auxiliary systems, and heavy textile machinery<\/em> where zero couplings, ultra-high ratios, AND sustained thermal stability under continuous maximum load must all be guaranteed simultaneously. Available in 9 size groups<\/strong>, motors 0.12\u20135.5 kW, bore 30\u2013110 mm, ratios 1\/200\u20131\/900. About Ever-power<\/a> | Request Engineering Consultation<\/a><\/p>\n<\/section>\n

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Technical Specifications<\/h2>\n

WPEDKS shares the WPEDKA base footprint with increased HL due to integral fin array. Motor flange: LA, LB, LC, LE, LZ per IEC 60034-7. Hollow bore: S (H7); W\u00d7Y = keyway. All in mm; reference speed 1500 r\/min<\/strong>.<\/p>\n

\"WPEDKS<\/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>\nB<\/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>\nS(bore)<\/th>\nW\u00d7Y(keyway)<\/th>\nWt(kg)<\/th>\n<\/tr>\n<\/thead>\n
40-70<\/td>\n0.12<\/td>\n1\/200\u20131\/900<\/td>\n314<\/td>\n153<\/td>\n130<\/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>\n30<\/td>\n8\u00d733.3<\/td>\n19<\/td>\n<\/tr>\n
50-80<\/td>\n0.18<\/td>\n<\/td>\n314<\/td>\n144<\/td>\n150<\/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>\n11<\/td>\n4\u00d712.8<\/td>\n35<\/td>\n10\u00d738.3<\/td>\n27<\/td>\n<\/tr>\n
60-100<\/td>\n0.37<\/td>\n1\/200<\/td>\n387<\/td>\n175<\/td>\n160<\/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>\n40<\/td>\n12\u00d743.3<\/td>\n45<\/td>\n<\/tr>\n
70-120<\/td>\n0.37\/0.75<\/td>\n1\/300\u20131\/400<\/td>\n425\/445<\/td>\n193<\/td>\n175<\/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>\n45<\/td>\n14\u00d748.8<\/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>\n60<\/td>\n18\u00d764.4<\/td>\n103<\/td>\n<\/tr>\n
100-155<\/td>\n1.5<\/td>\n1\/800<\/td>\n570<\/td>\n269<\/td>\n256<\/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>\n70<\/td>\n20\u00d774.9<\/td>\n147<\/td>\n<\/tr>\n
120-175<\/td>\n2.2\/3.0<\/td>\n1\/900<\/td>\n631<\/td>\n287<\/td>\n282<\/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>\n80<\/td>\n22\u00d785.4<\/td>\n204<\/td>\n<\/tr>\n
135-200<\/td>\n3.0\/4.0<\/td>\n<\/td>\n580<\/td>\n318<\/td>\n320<\/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>\n85<\/td>\n22\u00d790.4<\/td>\n298<\/td>\n<\/tr>\n
155-250<\/td>\n5.5<\/td>\n<\/td>\n815<\/td>\n380<\/td>\n400<\/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>\n110<\/td>\n28\u00d7116.4<\/td>\n470<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

* HL = total housing height including fin array; larger than WPEDKA equivalent. All other dimensions (footprint, flange, bore) identical to WPEDKA \u2014 direct thermal upgrade with HL clearance verification. Both IEC flange and hollow bore dimensions per IEC 60034-7 and H7 standards respectively.<\/p>\n<\/section>\n

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Product Structure \u2014 Four Features in One Cast Iron Casting<\/h2>\n
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\"WPEDKS<\/div>\n
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The WPEDKS combines four integral features in a single FC25 cast iron casting: an IEC motor flange at the first-stage input, a two-stage worm cascade, an H7 hollow output bore at the second-stage, and a cast-integral longitudinal fin array on the top and side housing faces. All four features are part of the original casting \u2014 no bolt-on components, no secondary bonding, no vibration risk at any interface.<\/p>\n\n\n\n\n\n\n\n
Feature 1<\/td>\nIEC 60034-7 motor flange \u2014 no input coupling<\/td>\n<\/tr>\n
Feature 2<\/td>\nTwo worm-and-wheel stages \u2014 ratio 1\/200\u20131\/900<\/td>\n<\/tr>\n
Feature 3<\/td>\nH7 hollow output bore + keyway \u2014 no output coupling<\/td>\n<\/tr>\n
Feature 4<\/td>\nCast-integral fins \u2014 manages motor + dual gear-stage heat simultaneously<\/td>\n<\/tr>\n
Thermal Gain<\/td>\n~18\u00b0C lower than WPEDKA \u2014 essential for 24\/7 heavy process operation<\/td>\n<\/tr>\n
Drop-in Upgrade<\/td>\nIdentical footprint and interface dims to WPEDKA \u2014 verify HL clearance<\/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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Four-Feature Integration \u2014 The Highest Specification in WPE<\/h3>\n

The WPEDKS simultaneously provides: no input coupling (IEC flange), no output coupling (hollow bore), extreme reduction ratio 1\/200\u20131\/900 (two-stage), and thermal stability for continuous maximum-load operation (fin array). This is the only product in the WPE series \u2014 or any comparable product range \u2014 that provides all four simultaneously. Keywords: motor-direct hollow shaft finned double speed worm gearbox, four-feature two-stage reducer.<\/em><\/p>\n<\/div>\n<\/div>\n

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\ufe0f<\/div>\n
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Manages Four Simultaneous Heat Sources<\/h3>\n

Motor winding heat + first-stage gear mesh heat + second-stage gear mesh heat + all in an enclosed housing = the most demanding thermal scenario in the WPE range. The WPEDKS fin array is specifically sized for this four-source load, maintaining oil sump temperature \u226495\u00b0C at rated load in up to 45\u00b0C ambient \u2014 the only product in the WPE range that can make this claim at full zero-coupling two-stage operation.<\/p>\n<\/div>\n<\/div>\n

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\u26a1<\/div>\n
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Zero Couplings \u2014 Simplest Drive Chain for 24\/7 Lines<\/h3>\n

For steel mill and paper mill 24\/7 continuous process lines where every unplanned stop is measured in thousands of dollars per hour, the WPEDKS eliminates the two most common coupling-related failure modes (wear and misalignment) from the drive chain. Combined with the thermal stability that prevents overtemperature stops, the WPEDKS is the maximum-reliability drive configuration.<\/p>\n<\/div>\n<\/div>\n

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\ufe0f<\/div>\n
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Permanent Cast-Integral Fins \u2014 Zero Thermal Degradation<\/h3>\n

Fins integral to the housing casting cannot loosen, detach, corrode separately, or degrade thermally. For steel mill and paper mill environments where vibration, heat cycling, and periodic cleaning are part of normal operation, permanent fins provide consistent thermal performance over the entire service life.<\/p>\n<\/div>\n<\/div>\n

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Best Total Cost of Ownership in the WPE Range<\/h3>\n

The WPEDKS carries the highest unit price in the WPE range. It also delivers the lowest total cost of ownership for 24\/7 heavy process applications: zero coupling replacement, zero overtemperature stops, minimum motor maintenance via IEC flange, and extended lubricant drain intervals from reduced oil temperatures. For high-OEE production lines, payback vs WPEDKA is typically 12\u201324 months.<\/p>\n<\/div>\n<\/div>\n

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Direct Upgrade from WPEDKA<\/h3>\n

The WPEDKS is a dimensional drop-in for the WPEDKA \u2014 same base footprint, same IEC flange, same hollow bore dimensions. For any WPEDKA installation experiencing coupling wear, overtemperature stops, or both simultaneously, the WPEDKS resolves both problems in a single product upgrade.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n

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Industry Applications<\/h2>\n

The WPEDKS is the premium specification for 24\/7 continuous drives requiring zero couplings at both ends AND sustained thermal stability:<\/p>\n

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Steel Mill 24\/7 Roller Drives<\/strong>Hot rolling mill table roller hollow-shaft auxiliary drives, slab pusher drives, and continuous casting line auxiliary drives operating three shifts in high-ambient-temperature steel plant environments where zero couplings and thermal stability are both mandatory.<\/span><\/div>\n

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Paper Mill Continuous Lines<\/strong>Press section felt roll drives, dryer section auxiliary drives, and continuous paper machine winder drives requiring zero-coupling direct shaft mounting AND thermal stability during extended continuous production runs.<\/span><\/div>\n

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Textile Heavy Machinery<\/strong>Heavy industrial loom auxiliary drives, large tenter frame chain drives, and industrial warping machine hollow-shaft drives operating in textile factories where continuous operation, zero couplings, and thermal management are simultaneously required.<\/span><\/div>\n

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\u2699\ufe0f<\/div>\n

Hot Ambient Process Industry<\/strong>Any industrial drive in a hot plant room (steel, glass, rubber, cement) where the combination of motor heat, two-stage gear heat, and high ambient temperature exceeds the WPEDKA’s thermal capacity, and the application also requires zero-coupling hollow shaft direct mounting.<\/span><\/div>\n

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High-OEE Production Lines<\/strong>Automotive components manufacturing lines, electronics production conveyors, and any high-OEE facility where the WPEDKS’s elimination of both coupling maintenance AND overtemperature stops justifies its premium price through measurable uptime improvement.<\/span><\/div>\n

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New Energy Manufacturing<\/strong>EV battery production line hollow-shaft conveyor drives, solar panel manufacturing line drives, and wind turbine component assembly conveyor drives in enclosed factories requiring the maximum-specification zero-coupling continuous drive.<\/span><\/div>\n<\/div>\n<\/section>\n

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Quality Control & Certification \u2014 The Highest Standard in WPE<\/h2>\n
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ISO 9001:2015 & CE<\/h3>\n

Full ISO 9001:2015 QMS. CE Declaration of Conformity. Fin casting inspected at foundry stage. IEC flange CMM verified. Hollow bore H7 plug gauged. All three verifications before machining and before run test.<\/p>\n<\/div>\n

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\ufe0f Four-Feature Full Verification<\/h3>\n

The most comprehensive inspection in the WPE range: (1) IEC flange CMM (\u22640.05 mm TIR), (2) hollow bore H7 plug gauge + concentricity, (3) 90-min thermal run at 110% torque, (4) post-thermal bore re-measurement confirming no thermal distortion of H7 bore. Only the WPEDKS receives all four checks.<\/p>\n<\/div>\n

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Material & ROI Documentation<\/h3>\n

Housing: FC25 cast iron. Both worm shafts: 20CrMnTi (\u226558 HRC). Both wheel rims: ZCuSn10Pb1. Material certs, SGS\/BV inspection, and an ROI analysis comparing WPEDKS total cost of ownership vs WPEDKA over 36 months of 24\/7 operation \u2014 available on request for procurement decision support.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

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Why Choose Ever-power for WPEDKS Gearboxes<\/h2>\n
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\"Ever-power<\/div>\n
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We supply WPEDKS gearboxes to steel mill equipment builders, paper machine OEMs, and heavy textile machinery manufacturers in the UK, France, Japan, Australia, and over 60 countries. The WPEDKS is our most complex product to manufacture and inspect \u2014 and we apply correspondingly our most rigorous verification standard, because the customers who specify it do so because they genuinely cannot afford any failure in their 24\/7 production environments.<\/p>\n