{"id":1928,"date":"2026-05-27T06:45:26","date_gmt":"2026-05-27T06:45:26","guid":{"rendered":"https:\/\/chinawormgearbox.xyz\/product\/wpeks-hollow-shaft-double-speed-worm-gear-reducer-with-cooling-fins\/"},"modified":"2026-05-27T06:45:26","modified_gmt":"2026-05-27T06:45:26","slug":"wpeks-hollow-shaft-double-speed-worm-gear-reducer-with-cooling-fins","status":"publish","type":"product","link":"https:\/\/chinawormgearbox.xyz\/pl\/product\/wpeks-hollow-shaft-double-speed-worm-gear-reducer-with-cooling-fins\/","title":{"rendered":"WPEKS Hollow Shaft Double Speed Worm Gear Reducer with Cooling Fins"},"content":{"rendered":"
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WPEKS Hollow Shaft Double Speed Worm Gear Reducer with Cooling Fins \u2014 Thermally Stable Coupling-Free Ultra-High Ratio Drive for Continuous Food, Brewing & Chemical Applications<\/h1>\n

Food processing vessel drives, industrial brewing systems, and continuous chemical agitators share three requirements simultaneously: coupling-free shaft connection (for maintenance simplicity and hygiene), ultra-high reduction ratios (1\/200\u20131\/900) for very slow impeller speeds, and thermal stability during long continuous production shifts. The WPEKS hollow shaft double speed worm gear reducer with cooling fins<\/strong> is the purpose-designed solution that satisfies all three requirements in a single cast iron unit.<\/p>\n

The integral cooling fin array maintains oil sump temperature approximately 18\u00b0C lower<\/strong> than the equivalent smooth-body WPEKA at rated load \u2014 critical for brewing fermentation, food blending, and continuous chemical vessel drives where overtemperature stops cause batch loss or product contamination. Available in 9 size groups<\/strong>, bore diameters 30\u2013110 mm, ratios 1\/200\u20131\/900. O Ever-power<\/a> | Request a Thermal Assessment<\/a><\/p>\n<\/section>\n

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Technical Specifications<\/h2>\n

WPEKS shares the WPEKA base footprint with increased housing height (HL) due to integral fin array. S = hollow bore (H7); W\u00d7Y = bore keyway. HH = lateral height offset. All dimensions in mm; reference speed 1500 r\/min<\/strong>.<\/p>\n

\"WPEKS<\/div>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Size<\/th>\nRatio<\/th>\nA<\/th>\nAA<\/th>\nAB<\/th>\nB<\/th>\nBE<\/th>\nHH<\/th>\nHL<\/th>\nLL<\/th>\nH<\/th>\nM<\/th>\nN<\/th>\nE<\/th>\nF<\/th>\nG<\/th>\nZ<\/th>\nHS<\/th>\nU<\/th>\nT\u00d7V<\/th>\nS(bore)<\/th>\nW\u00d7Y(keyway)<\/th>\nWt(kg)<\/th>\n<\/tr>\n<\/thead>\n
40-70<\/td>\n1\/200\u20131\/900<\/td>\n286<\/td>\n195<\/td>\n153<\/td>\n130<\/td>\n87<\/td>\n35<\/td>\n215<\/td>\n105<\/td>\n238<\/td>\n150<\/td>\n190<\/td>\n115<\/td>\n150<\/td>\n20<\/td>\n15<\/td>\n25<\/td>\n12<\/td>\n4\u00d72.5<\/td>\n30<\/td>\n8\u00d733.3<\/td>\n20<\/td>\n<\/tr>\n
50-80<\/td>\n<\/td>\n297<\/td>\n197<\/td>\n144<\/td>\n150<\/td>\n108<\/td>\n35<\/td>\n250<\/td>\n120<\/td>\n273<\/td>\n170<\/td>\n220<\/td>\n135<\/td>\n180<\/td>\n20<\/td>\n15<\/td>\n30<\/td>\n12<\/td>\n4\u00d72.5<\/td>\n35<\/td>\n10\u00d738.3<\/td>\n27<\/td>\n<\/tr>\n
60-100<\/td>\n<\/td>\n363<\/td>\n231<\/td>\n175<\/td>\n160<\/td>\n120<\/td>\n42<\/td>\n310<\/td>\n150<\/td>\n334<\/td>\n190<\/td>\n270<\/td>\n155<\/td>\n220<\/td>\n25<\/td>\n15<\/td>\n40<\/td>\n15<\/td>\n5\u00d73<\/td>\n40<\/td>\n12\u00d743.3<\/td>\n44<\/td>\n<\/tr>\n
70-120<\/td>\n<\/td>\n408<\/td>\n256<\/td>\n193<\/td>\n175<\/td>\n140<\/td>\n55<\/td>\n370<\/td>\n180<\/td>\n430<\/td>\n230<\/td>\n320<\/td>\n180<\/td>\n260<\/td>\n30<\/td>\n18<\/td>\n40<\/td>\n18<\/td>\n5\u00d73<\/td>\n45<\/td>\n14\u00d748.8<\/td>\n73<\/td>\n<\/tr>\n
80-135<\/td>\n<\/td>\n471<\/td>\n298<\/td>\n226<\/td>\n210<\/td>\n160<\/td>\n65<\/td>\n430<\/td>\n215<\/td>\n480<\/td>\n250<\/td>\n350<\/td>\n200<\/td>\n290<\/td>\n30<\/td>\n18<\/td>\n50<\/td>\n22<\/td>\n7\u00d74<\/td>\n60<\/td>\n18\u00d764.4<\/td>\n101<\/td>\n<\/tr>\n
100-155<\/td>\n<\/td>\n555<\/td>\n354<\/td>\n269<\/td>\n256<\/td>\n190<\/td>\n80<\/td>\n490<\/td>\n235<\/td>\n531<\/td>\n275<\/td>\n390<\/td>\n220<\/td>\n320<\/td>\n35<\/td>\n21<\/td>\n50<\/td>\n25<\/td>\n7\u00d74<\/td>\n70<\/td>\n20\u00d774.9<\/td>\n144<\/td>\n<\/tr>\n
120-175<\/td>\n<\/td>\n598<\/td>\n379<\/td>\n287<\/td>\n282<\/td>\n219<\/td>\n95<\/td>\n555<\/td>\n260<\/td>\n600<\/td>\n310<\/td>\n430<\/td>\n250<\/td>\n350<\/td>\n40<\/td>\n21<\/td>\n65<\/td>\n30<\/td>\n7\u00d74<\/td>\n80<\/td>\n22\u00d785.4<\/td>\n201<\/td>\n<\/tr>\n
135-200<\/td>\n<\/td>\n662<\/td>\n425<\/td>\n318<\/td>\n320<\/td>\n256<\/td>\n105<\/td>\n625<\/td>\n290<\/td>\n666<\/td>\n360<\/td>\n480<\/td>\n290<\/td>\n390<\/td>\n40<\/td>\n24<\/td>\n75<\/td>\n35<\/td>\n10\u00d74.5<\/td>\n85<\/td>\n22\u00d790.4<\/td>\n293<\/td>\n<\/tr>\n
155-250<\/td>\n<\/td>\n795<\/td>\n510<\/td>\n380<\/td>\n400<\/td>\n295<\/td>\n103<\/td>\n755<\/td>\n350<\/td>\n800<\/td>\n460<\/td>\n560<\/td>\n380<\/td>\n480<\/td>\n45<\/td>\n28<\/td>\n85<\/td>\n40<\/td>\n12\u00d75<\/td>\n110<\/td>\n28\u00d7116.4<\/td>\n462<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

* HL = total height including fin array. WPEKS and WPEKA share identical base footprint, bore dimensions, and input shaft dimensions \u2014 WPEKS is a direct thermal upgrade with fin array height clearance verification required.<\/p>\n<\/section>\n

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Product Structure \u2014 Two-Stage Hollow Bore + Integral Fin System<\/h2>\n
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\"WPEKS<\/div>\n
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The WPEKS integrates three features in one casting: the two-stage worm cascade delivering 1\/200\u20131\/900 combined ratio, the H7 precision hollow output bore for coupling-free shaft mounting, and cast-integral longitudinal cooling fins on the top and side housing faces. All three are part of the original casting \u2014 no bolt-on additions, no vibration risk, permanent thermal and bore performance throughout the service life.<\/p>\n\n\n\n\n\n\n\n
Drive Stages<\/td>\nTwo worm-and-wheel pairs in series; ratio 1\/200\u20131\/900<\/td>\n<\/tr>\n
Output Bore<\/td>\nH7 hollow bore with keyway; 30\u2013110 mm<\/td>\n<\/tr>\n
Cooling Fins<\/td>\nCast-integral; ~18\u00b0C lower sustained temp vs WPEKA; manages two-stage heat<\/td>\n<\/tr>\n
Housing<\/td>\nFC25 cast iron; same footprint as WPEKA; increased HL for fins<\/td>\n<\/tr>\n
Upgrade Path<\/td>\nDirect thermal upgrade from WPEKA \u2014 verify HL clearance, same bore\/shaft dims<\/td>\n<\/tr>\n
Input<\/td>\nStandard solid 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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Dual Heat Source Management for Two-Stage Hollow Shaft Drives<\/h3>\n

A two-stage hollow shaft gearbox generates heat from two gear mesh sources. The WPEKS fin array is designed to manage this dual heat load while maintaining the hollow bore dimensions \u2014 the fins do not affect bore geometry, and bore performance is verified after the thermal run test to confirm no thermal distortion. Keywords: hollow shaft finned double speed worm gearbox, thermal two-stage hollow bore reducer.<\/em><\/p>\n<\/div>\n<\/div>\n

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Coupling-Free + Thermal Stability = Minimal Maintenance<\/h3>\n

The WPEKS eliminates two major maintenance categories simultaneously: output coupling inspection\/replacement (hollow bore) and overtemperature-related unplanned stops (fin cooling). For food processing and brewing facilities operating on tight production schedules, both maintenance reductions translate directly to improved OEE.<\/p>\n<\/div>\n<\/div>\n

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Food & Brewing Optimised<\/h3>\n

Unlike the WPEDS (motor-direct, finned), the WPEKS uses a standard solid input shaft \u2014 making it compatible with existing indirect-drive motor arrangements in food and brewing facilities that have standardised on belt or chain motor connections. The hollow output bore provides the coupling-free process shaft connection required for hygienic mixer designs.<\/p>\n<\/div>\n<\/div>\n

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Permanent Cast-Integral Fins for Industrial Environments<\/h3>\n

For food factories with steam cleaning, breweries with CO\u2082 environments, and chemical plants with corrosive atmospheres, the cast-integral fins provide permanent thermal performance without bolt-on accessories that can loosen, corrode, or harbour contamination. The fin surface can be cleaned with standard washing procedures.<\/p>\n<\/div>\n<\/div>\n

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\u2699\ufe0f<\/div>\n
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Drop-In Upgrade from WPEKA<\/h3>\n

The WPEKS shares the identical base footprint and bore dimensions with the WPEKA. For any WPEKA installation experiencing overtemperature issues during long production shifts, the WPEKS is the minimum-disruption thermal upgrade \u2014 verify HL height clearance for the fin array and swap in place.<\/p>\n<\/div>\n<\/div>\n

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9 Size Groups, Full Heavy Process Coverage<\/h3>\n

Bore diameters from 30 mm (size 40-70) to 110 mm (size 155-250) and ratios 1\/200\u20131\/900 cover the complete range of heavy process mixer, agitator, and drum drive applications that require both thermal stability and coupling-free output connection.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n

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Industry Applications<\/h2>\n

The WPEKS is the thermal solution for continuous heavy process drives requiring both coupling-free hollow bore output and two-stage ultra-high ratio reduction:<\/p>\n

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Brewing & Fermentation<\/strong>Large fermenter vessel agitator drives, conditioning tank drives, and wort cooling vessel mixers in brewing where long continuous production shifts and CO\u2082-rich environments demand thermally stable coupling-free hollow shaft drives.<\/span><\/div>\n

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Dairy & Food Processing<\/strong>Large cheese vat agitator drives, butter churning vessel drives, and industrial yoghurt mixing vessel drives requiring ultra-slow impeller speeds with hollow bore direct mounting and thermal stability during extended production runs.<\/span><\/div>\n

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Condiment & Sauce Production<\/strong>Large sauce mixing vessel drives, industrial ketchup batch cooker agitators, and food ingredient blending vessel drives requiring reliable ultra-slow hollow shaft coupling-free drives in food-contact environments.<\/span><\/div>\n

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\u2697\ufe0f<\/div>\n

Specialty Chemical \u2014 Continuous Lines<\/strong>Continuous polymer mixing vessel drives, specialty adhesive agitation drives, and industrial coating material mixing vessels operating at near-100% duty cycle in warm plant rooms where two-stage heat generation requires fin management.<\/span><\/div>\n

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Natural & Organic Food Production<\/strong>Organic jam kettle agitator drives, natural cosmetics mixing vessel drives, and essential oil blending vessel systems where gentle ultra-slow mixing requires compact hollow shaft two-stage drives with extended thermal stability.<\/span><\/div>\n

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Industrial-Scale Batch Production<\/strong>Any large industrial batch mixing vessel operating long production cycles where the dual benefits of hollow shaft direct mounting and fin cooling reduce both mechanical maintenance and thermal-related production interruptions.<\/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. Food-grade lubricant compatibility confirmed for USDA\/FDA machine documentation on request. Fin casting quality verified at foundry stage before machining.<\/p>\n<\/div>\n

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\ufe0f Thermal Run + Post-Run Bore Check<\/h3>\n

Each WPEKS undergoes a 60-minute thermal stability run<\/strong> at 110% rated torque. After the thermal run, the hollow bore is re-measured by calibrated plug gauge to confirm no thermal distortion has affected the H7 bore tolerance. This post-run bore check is unique to the WPEKS and confirms both thermal and bore performance in one test sequence.<\/p>\n<\/div>\n

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Material & Fin Standards<\/h3>\n

Housing: FC25 cast iron (\u2265250 MPa). Both worm shafts: 20CrMnTi (\u226558 HRC). Wheel rims: ZCuSn10Pb1. Fin geometry verified at casting stage. Third-party inspection available for food, brewing, and pharmaceutical compliance documentation.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

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Why Choose Ever-power for WPEKS Gearboxes<\/h2>\n
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\"Ever-power<\/div>\n
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We supply WPEKS hollow shaft finned two-stage gearboxes to food processing OEMs, brewery equipment builders, and dairy vessel manufacturers in the USA, Saudi Arabia, the Netherlands, Australia, and over 60 countries worldwide. Our post-run bore check \u2014 re-measuring H7 tolerance after the thermal run test \u2014 is a quality assurance level that food and brewing industry customers value as evidence that their bore dimensions remain correct even after thermal loading.<\/p>\n