{"id":1948,"date":"2026-05-27T06:58:06","date_gmt":"2026-05-27T06:58:06","guid":{"rendered":"https:\/\/chinawormgearbox.xyz\/product\/wpwdks-flange-mounted-universal-hollow-shaft-worm-gear-reducer-with-cooling-fins\/"},"modified":"2026-05-27T06:58:06","modified_gmt":"2026-05-27T06:58:06","slug":"wpwdks-flange-mounted-universal-hollow-shaft-worm-gear-reducer-with-cooling-fins","status":"publish","type":"product","link":"https:\/\/chinawormgearbox.xyz\/zh\/product\/wpwdks-flange-mounted-universal-hollow-shaft-worm-gear-reducer-with-cooling-fins\/","title":{"rendered":"WPWDKS Flange-Mounted Universal Hollow Shaft Worm Gear Reducer with Cooling Fins"},"content":{"rendered":"
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WPWDKS Flange-Mounted Universal Hollow Shaft Worm Gear Reducer with Cooling Fins \u2014 The Ultimate Thermal Solution for Continuous Zero-Coupling Hollow Shaft Drives<\/h1>\n

The WPWDKS<\/strong> addresses a specific challenge that no other WPW product resolves: continuous heavy-duty service on a motor-direct hollow shaft drive in a hot industrial environment. The motor generates heat at the input; the gear mesh generates heat internally; the hot ambient adds heat externally. Without thermal management, oil temperature climbs, lubricant degrades, and production stops. The WPWDKS adds cast-integral cooling fins to the WPWDKA four-feature platform \u2014 reducing oil sump temperature approximately 15\u00b0C lower<\/strong> than the smooth-body WPWDKA at rated load.<\/p>\n

The result is the highest-specification motor-direct hollow shaft universal worm gearbox in the WPW series: IEC motor-direct input, H7 hollow bore output, extended multi-direction output reach, universal base, AND thermal stability for 24\/7 hot-environment service. Motors 0.12\u201315 kW, bore 18\u2013110 mm, ratios 1\/5\u20131\/60. \u5173\u4e8e\u6c38\u6052\u4e4b\u529b<\/a> | Request a Thermal Assessment<\/a><\/p>\n<\/section>\n

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Technical Specifications<\/h2>\n

WPWDKS shares specification drawing with WPWDKA. HL = height including fins (greater than WPWDKA). All other dimensions identical \u2014 direct thermal upgrade with HL clearance check. Reference speed 1500 r\/min<\/strong>. All dimensions mm.<\/p>\n

\"WPWDKS<\/div>\n
\n\n\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>\nAC<\/th>\nBC<\/th>\nCC<\/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<\/th>\nWt(kg)<\/th>\n<\/tr>\n<\/thead>\n
40<\/td>\n0.12<\/td>\n1\/5\u20131\/60<\/td>\n135<\/td>\n75<\/td>\n85<\/td>\n95<\/td>\n61<\/td>\n40<\/td>\n45<\/td>\n60<\/td>\n135<\/td>\n100<\/td>\n130<\/td>\n80<\/td>\n110<\/td>\n10<\/td>\n10<\/td>\n115<\/td>\n95<\/td>\n140<\/td>\n4<\/td>\nM8<\/td>\n31<\/td>\n11<\/td>\n4\u00d712.8<\/td>\n18<\/td>\n6\u00d722.8<\/td>\n5<\/td>\n<\/tr>\n
50<\/td>\n0.18<\/td>\n<\/td>\n151<\/td>\n83<\/td>\n105<\/td>\n111<\/td>\n68<\/td>\n60<\/td>\n80<\/td>\n93<\/td>\n195<\/td>\n130<\/td>\n150<\/td>\n100<\/td>\n105<\/td>\n120<\/td>\n18<\/td>\n12<\/td>\n115<\/td>\n95<\/td>\n140<\/td>\n4<\/td>\nM8<\/td>\n31<\/td>\n11<\/td>\n4\u00d712.8<\/td>\n20<\/td>\n6\u00d722.8<\/td>\n8<\/td>\n<\/tr>\n
60<\/td>\n0.37<\/td>\n<\/td>\n167<\/td>\n91<\/td>\n110<\/td>\n127<\/td>\n76<\/td>\n60<\/td>\n80<\/td>\n93<\/td>\n195<\/td>\n130<\/td>\n150<\/td>\n100<\/td>\n105<\/td>\n120<\/td>\n18<\/td>\n12<\/td>\n130<\/td>\n110<\/td>\n160<\/td>\n4<\/td>\nM8<\/td>\n33<\/td>\n14<\/td>\n5\u00d716.3<\/td>\n25<\/td>\n8\u00d728.3<\/td>\n12.5<\/td>\n<\/tr>\n
70<\/td>\n0.37\/0.75<\/td>\n<\/td>\n200\/202<\/td>\n109\/111<\/td>\n130<\/td>\n152<\/td>\n86<\/td>\n70<\/td>\n73<\/td>\n108<\/td>\n233<\/td>\n150<\/td>\n190<\/td>\n115<\/td>\n150<\/td>\n18<\/td>\n15<\/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>\n30<\/td>\n8\u00d733.3<\/td>\n17<\/td>\n<\/tr>\n
80<\/td>\n0.75\/1.5<\/td>\n<\/td>\n225<\/td>\n125<\/td>\n150<\/td>\n169<\/td>\n102<\/td>\n80<\/td>\n83<\/td>\n123<\/td>\n268<\/td>\n170<\/td>\n220<\/td>\n135<\/td>\n180<\/td>\n18<\/td>\n15<\/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>\n35<\/td>\n10\u00d738.3<\/td>\n26<\/td>\n<\/tr>\n
100<\/td>\n1.5<\/td>\n<\/td>\n280<\/td>\n148<\/td>\n160<\/td>\n216<\/td>\n117<\/td>\n100<\/td>\n100<\/td>\n150<\/td>\n330<\/td>\n190<\/td>\n270<\/td>\n155<\/td>\n220<\/td>\n20<\/td>\n15<\/td>\n165<\/td>\n130<\/td>\n200<\/td>\n4.5<\/td>\nM10<\/td>\n52<\/td>\n24<\/td>\n8\u00d727.3<\/td>\n40<\/td>\n12\u00d743.3<\/td>\n41.5<\/td>\n<\/tr>\n
120<\/td>\n2.2\/3.0<\/td>\n<\/td>\n333<\/td>\n181<\/td>\n175<\/td>\n256<\/td>\n124<\/td>\n120<\/td>\n120<\/td>\n180<\/td>\n395<\/td>\n230<\/td>\n320<\/td>\n180<\/td>\n260<\/td>\n25<\/td>\n18<\/td>\n215<\/td>\n180<\/td>\n250<\/td>\n5<\/td>\nM12<\/td>\n63<\/td>\n28<\/td>\n8\u00d731.3<\/td>\n45<\/td>\n14\u00d748.8<\/td>\n60<\/td>\n<\/tr>\n
135<\/td>\n3.0\/4.0<\/td>\n<\/td>\n375<\/td>\n202<\/td>\n210<\/td>\n296<\/td>\n147<\/td>\n135<\/td>\n135<\/td>\n215<\/td>\n450<\/td>\n250<\/td>\n350<\/td>\n200<\/td>\n290<\/td>\n30<\/td>\n18<\/td>\n215<\/td>\n180<\/td>\n250<\/td>\n5<\/td>\nM12<\/td>\n63<\/td>\n28<\/td>\n8\u00d731.3<\/td>\n60<\/td>\n18\u00d764.4<\/td>\n90<\/td>\n<\/tr>\n
155<\/td>\n5.5<\/td>\n<\/td>\n448<\/td>\n247<\/td>\n256<\/td>\n345<\/td>\n185<\/td>\n155<\/td>\n135<\/td>\n235<\/td>\n493<\/td>\n280<\/td>\n380<\/td>\n220<\/td>\n320<\/td>\n32<\/td>\n21<\/td>\n265<\/td>\n230<\/td>\n300<\/td>\n5<\/td>\nM12<\/td>\n83<\/td>\n38<\/td>\n10\u00d741.3<\/td>\n70<\/td>\n20\u00d774.9<\/td>\n118<\/td>\n<\/tr>\n
175<\/td>\n7.5<\/td>\n<\/td>\n481<\/td>\n262<\/td>\n282<\/td>\n374<\/td>\n192<\/td>\n175<\/td>\n160<\/td>\n260<\/td>\n558<\/td>\n310<\/td>\n410<\/td>\n250<\/td>\n350<\/td>\n37<\/td>\n21<\/td>\n265<\/td>\n230<\/td>\n300<\/td>\n5<\/td>\nM12<\/td>\n83<\/td>\n38<\/td>\n10\u00d741.3<\/td>\n80<\/td>\n22\u00d785.4<\/td>\n167<\/td>\n<\/tr>\n
200<\/td>\n11.0<\/td>\n<\/td>\n543<\/td>\n285<\/td>\n320<\/td>\n412<\/td>\n230<\/td>\n200<\/td>\n175<\/td>\n290<\/td>\n620<\/td>\n355<\/td>\n445<\/td>\n290<\/td>\n390<\/td>\n45<\/td>\n24<\/td>\n300<\/td>\n250<\/td>\n350<\/td>\n6<\/td>\nM16<\/td>\n114<\/td>\n42<\/td>\n12\u00d745.3<\/td>\n85<\/td>\n22\u00d790.4<\/td>\n237<\/td>\n<\/tr>\n
250<\/td>\n11.0\/15.0<\/td>\n<\/td>\n615<\/td>\n330<\/td>\n400<\/td>\n500<\/td>\n285<\/td>\n250<\/td>\n200<\/td>\n350<\/td>\n750<\/td>\n460<\/td>\n560<\/td>\n380<\/td>\n480<\/td>\n50<\/td>\n28<\/td>\n300<\/td>\n250<\/td>\n350<\/td>\n6<\/td>\nM16<\/td>\n114<\/td>\n42<\/td>\n12\u00d745.3<\/td>\n110<\/td>\n28\u00d7116.4<\/td>\n395<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

* Shared drawing with WPWDKA. HL = height including cooling fin array \u2014 greater than WPWDKA. All base, flange, bore, and shaft dimensions identical to WPWDKA \u2014 direct thermal upgrade with HL height clearance verification.<\/p>\n<\/section>\n

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Product Structure \u2014 Five Features in One Casting<\/h2>\n
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\"WPWDKS<\/div>\n
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The WPWDKS extends the WPWDKA four-feature platform with a cast-integral longitudinal fin array on the housing top and outer side faces \u2014 the fifth feature. All five are integral to the same FC25 casting: IEC flange, hollow bore, extended output body, universal base, and cooling fins. No bolt-on accessories, no vibration loosening risk, permanent thermal performance.<\/p>\n\n\n\n\n\n\n\n
Feature 1<\/td>\nIEC motor flange \u2014 no input coupling<\/td>\n<\/tr>\n
Feature 2<\/td>\nH7 hollow bore \u2014 no output coupling<\/td>\n<\/tr>\n
Feature 3<\/td>\nExtended body (LL) \u2014 multi-direction output reach<\/td>\n<\/tr>\n
Feature 4<\/td>\nUniversal flanged base \u2014 multi-orientation mounting<\/td>\n<\/tr>\n
Feature 5<\/td>\nCast-integral fins \u2014 ~15\u00b0C lower vs WPWDKA at rated load<\/td>\n<\/tr>\n
Upgrade Path<\/td>\nDirect drop-in for WPWDKA \u2014 verify HL clearance only<\/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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\ufe0f<\/div>\n
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Five Heat Sources \u2014 One Integrated Thermal Solution<\/h3>\n

A WPWDKA in hot continuous service faces: motor winding heat, gear mesh heat, and high ambient. The WPWDKS fin array is the only WPW product feature that manages all three simultaneously while retaining zero-coupling motor-direct hollow bore output. No other product in the WPW DK series has this capability. Keywords: motor-direct hollow shaft finned universal worm reducer, thermal zero-coupling worm gearbox.<\/em><\/p>\n<\/div>\n<\/div>\n

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Highest Specification in the WPW Series<\/h3>\n

With five integral features \u2014 IEC flange, hollow bore, extended output, universal base, and cooling fins \u2014 the WPWDKS is the highest-specification product in the entire WPW series. It is selected when the application demands maximum feature integration: continuous duty, hot environment, zero couplings, extended hollow bore reach, and multi-orientation mounting simultaneously.<\/p>\n<\/div>\n<\/div>\n

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Extended Lubricant Life Under Motor + Gear Heat<\/h3>\n

Reducing oil temperature by ~15\u00b0C approximately doubles lubricant oxidation life. In motor-direct applications the combined motor and gear heat load is higher than standard \u2014 the WPWDKS thermal advantage is especially significant here, extending oil drain intervals from ~2,500 to potentially 4,000+ hours in continuous hot-environment service.<\/p>\n<\/div>\n<\/div>\n

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Direct Thermal Upgrade from WPWDKA<\/h3>\n

All WPWDKS dimensions (flange, base, bore, shaft) are identical to WPWDKA. Where a WPWDKA is experiencing overtemperature in continuous hot-environment service, WPWDKS is the minimum-disruption upgrade \u2014 verify HL clearance and replace in place.<\/p>\n<\/div>\n<\/div>\n

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\ufe0f<\/div>\n
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Permanent Fins for Industrial Durability<\/h3>\n

Cast-integral fins cannot loosen under the vibration and thermal cycling of steel mills, cement plants, or outdoor tropical installations. Permanent thermal performance throughout the service life with no fin-related maintenance \u2014 critical for 24\/7 continuous production environments where gearbox maintenance is scheduled, not reactive.<\/p>\n<\/div>\n<\/div>\n

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\u2699\ufe0f<\/div>\n
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60-Minute Thermal Test at 110% Torque \u2014 Every Unit<\/h3>\n

Unlike competitors who thermal-test only sample units, every WPWDKS undergoes a 60-minute thermal stability test at 110% rated torque. Pass criterion: oil temperature \u226490\u00b0C \u2014 providing 5\u00b0C safety margin below the 95\u00b0C maximum. This test verifies the fin array is working correctly on every unit before shipment.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n

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Industry Applications<\/h2>\n

WPWDKS is specified when all five features \u2014 motor-direct, hollow bore, extended reach, universal base, and thermal management \u2014 are simultaneously required:<\/p>\n

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Steel Mill Hollow Shaft Drives<\/strong>Hot rolling mill auxiliary hollow shaft roller drives and steel plant conveyor hollow shaft motor-direct drives in hot plant rooms requiring continuous operation with zero coupling maintenance.<\/span><\/div>\n

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Cement & Lime Plant Drives<\/strong>IEC motor-direct hollow shaft conveyor drives in cement plant hot environments where the combination of motor heat, gear heat, and 43\u00b0C+ ambient demands the thermal headroom of the WPWDKS.<\/span><\/div>\n

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\u26cf\ufe0f<\/div>\n

Hot-Climate Mining Equipment<\/strong>Motor-direct hollow shaft mine conveyor drives in tropical mining operations where 40\u00b0C+ outdoor ambient combined with motor and gear heat approaches the WPWDKA thermal limit.<\/span><\/div>\n

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Textile & Heavy Manufacturing<\/strong>Heavy textile machinery IEC motor-direct hollow shaft drives and continuous manufacturing line hollow shaft drives in enclosed warm plant rooms requiring 24\/7 thermal stability.<\/span><\/div>\n

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\u2697\ufe0f<\/div>\n

Continuous Process Hollow Shaft Drives<\/strong>Continuous chemical process hollow shaft agitator drives and reactor feed hollow shaft conveyor drives in enclosed plants where motor-direct zero-coupling convenience must be sustained 24\/7.<\/span><\/div>\n

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Biomass & Energy Facilities<\/strong>Biomass handling facility motor-direct hollow shaft conveyor drives and bioenergy plant auxiliary drives in warm outdoor or enclosed environments requiring all five WPWDKS features for continuous operation.<\/span><\/div>\n<\/div>\n<\/section>\n

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Quality Control & Certification \u2014 The Highest Standard in WPW DK Series<\/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; bore H7 plug gauge + concentricity; extended shaft tip run-out \u2014 all verified before the thermal run.<\/p>\n<\/div>\n

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\ufe0f Full Thermal + Triple Interface Verification<\/h3>\n

Each WPWDKS undergoes: (1) IEC flange CMM; (2) bore H7 gauge + concentricity CMM; (3) extended shaft tip run-out CMM; (4) 60-min thermal run at 110% torque \u2014 pass \u226490\u00b0C<\/strong>; (5) noise, seal, torque re-check post-thermal. Five verification steps \u2014 the most comprehensive in the WPW series.<\/p>\n<\/div>\n

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ROI Documentation Available<\/h3>\n

For engineering procurement decisions between WPWDKA and WPWDKS, we can provide a 36-month TCO comparison model showing: thermal stop elimination value, extended lubricant interval savings, and coupling elimination savings vs the WPWDKS unit price premium. Contact us for your specific operating profile.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

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Why Choose Ever-power for WPWDKS Gearboxes<\/h2>\n
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\"Ever-power<\/div>\n
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We supply WPWDKS thermally optimised motor-direct hollow shaft universal worm gearboxes to steel plant equipment builders, cement industry machinery OEMs, and continuous process equipment manufacturers in Japan, the UK, Australia, India, and over 60 countries. Our five-step verification standard \u2014 the most comprehensive in the WPW range \u2014 is our commitment to the demanding production environments where WPWDKS is specified.<\/p>\n