{"id":1945,"date":"2026-05-27T06:58:03","date_gmt":"2026-05-27T06:58:03","guid":{"rendered":"https:\/\/chinawormgearbox.xyz\/product\/wpwkv-universal-hollow-shaft-worm-gear-reducer-vertical-flange-mount\/"},"modified":"2026-05-27T06:58:03","modified_gmt":"2026-05-27T06:58:03","slug":"wpwkv-universal-hollow-shaft-worm-gear-reducer-vertical-flange-mount","status":"publish","type":"product","link":"https:\/\/chinawormgearbox.xyz\/ja\/product\/wpwkv-universal-hollow-shaft-worm-gear-reducer-vertical-flange-mount\/","title":{"rendered":"WPWKV Universal Hollow Shaft Worm Gear Reducer Vertical Flange Mount"},"content":{"rendered":"
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WPWKV Universal Hollow Shaft Worm Gear Reducer \u2014 Coupling-Free Vertical Output for Pump Drives, Top-Entry Agitators & Vertical Conveyor Heads<\/h1>\n

Vertical pump drives and top-entry vessel agitators face two simultaneous installation challenges: the gearbox must output vertically (downward onto the pump or agitator shaft), and the shaft connection must be coupling-free for compactness and hygiene. The WPWKV universal hollow shaft vertical flange-mount worm gear reducer<\/strong> solves both by combining the H7 hollow bore of the WPWK series with the vertical flange mounting configuration of the WPWV platform \u2014 allowing the pump or agitator shaft to slide directly into the downward-facing bore without any coupling hardware.<\/p>\n

Hollow bore diameters 16\u2013110 mm<\/strong>, ratios 1\/5\u20131\/60, self-locking at \u22651\/30 for pump back-spin prevention. The flange mounting face bolts directly to pump heads, vessel top nozzles, and vertical machine structures. \u30a8\u30d0\u30fc\u30d1\u30ef\u30fc\u306b\u3064\u3044\u3066<\/a> | Request a Bore Consultation<\/a><\/p>\n<\/section>\n

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Technical Specifications<\/h2>\n

WPWKV shares the specification drawing with WPWKT. LL = housing length for vertical configuration; S = hollow bore H7; W\u00d7Y = bore keyway. Three shaft-direction positions (A\u2013C). Reference speed 1500 r\/min<\/strong>. All dimensions in mm.<\/p>\n

\"WPWKV<\/div>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Size<\/th>\nRatio<\/th>\nAB<\/th>\nB<\/th>\nCC<\/th>\nLL<\/th>\nM<\/th>\nN<\/th>\nE<\/th>\nE\u2081<\/th>\nE\u2082<\/th>\nG<\/th>\nZ<\/th>\nHS<\/th>\nU<\/th>\nT\u00d7V<\/th>\nS(bore)<\/th>\nW\u00d7Y<\/th>\nWt(kg)<\/th>\n<\/tr>\n<\/thead>\n
40<\/td>\n1\/5\u20131\/60<\/td>\n87<\/td>\n85<\/td>\n40<\/td>\n63<\/td>\n90<\/td>\n187<\/td>\n70<\/td>\n72<\/td>\n97<\/td>\n12<\/td>\n10<\/td>\n25<\/td>\n12<\/td>\n4\u00d72.5<\/td>\n16<\/td>\n6\u00d718.8<\/td>\n5<\/td>\n<\/tr>\n
50<\/td>\n<\/td>\n108<\/td>\n105<\/td>\n50<\/td>\n70<\/td>\n120<\/td>\n226<\/td>\n95<\/td>\n90<\/td>\n110<\/td>\n14<\/td>\n12<\/td>\n30<\/td>\n12<\/td>\n4\u00d72.5<\/td>\n20<\/td>\n6\u00d722.8<\/td>\n8<\/td>\n<\/tr>\n
60<\/td>\n<\/td>\n120<\/td>\n110<\/td>\n60<\/td>\n80<\/td>\n130<\/td>\n257<\/td>\n105<\/td>\n102<\/td>\n129<\/td>\n15<\/td>\n12<\/td>\n40<\/td>\n15<\/td>\n5\u00d73<\/td>\n25<\/td>\n8\u00d728.3<\/td>\n11<\/td>\n<\/tr>\n
70<\/td>\n<\/td>\n140<\/td>\n130<\/td>\n70<\/td>\n95<\/td>\n150<\/td>\n305<\/td>\n115<\/td>\n120<\/td>\n155<\/td>\n20<\/td>\n15<\/td>\n50<\/td>\n18<\/td>\n5\u00d73<\/td>\n30<\/td>\n8\u00d733.3<\/td>\n15.5<\/td>\n<\/tr>\n
80<\/td>\n<\/td>\n160<\/td>\n150<\/td>\n80<\/td>\n105<\/td>\n170<\/td>\n350<\/td>\n135<\/td>\n140<\/td>\n180<\/td>\n20<\/td>\n15<\/td>\n50<\/td>\n22<\/td>\n7\u00d74<\/td>\n35<\/td>\n10\u00d738.3<\/td>\n24<\/td>\n<\/tr>\n
100<\/td>\n<\/td>\n190<\/td>\n160<\/td>\n100<\/td>\n135<\/td>\n190<\/td>\n410<\/td>\n155<\/td>\n165<\/td>\n215<\/td>\n22<\/td>\n15<\/td>\n50<\/td>\n25<\/td>\n7\u00d74<\/td>\n40<\/td>\n12\u00d743.3<\/td>\n38<\/td>\n<\/tr>\n
120<\/td>\n<\/td>\n219<\/td>\n175<\/td>\n120<\/td>\n160<\/td>\n230<\/td>\n494<\/td>\n180<\/td>\n195<\/td>\n255<\/td>\n25<\/td>\n18<\/td>\n65<\/td>\n30<\/td>\n7\u00d74<\/td>\n45<\/td>\n14\u00d748.8<\/td>\n56<\/td>\n<\/tr>\n
135<\/td>\n<\/td>\n249<\/td>\n210<\/td>\n135<\/td>\n185<\/td>\n250<\/td>\n559<\/td>\n200<\/td>\n230<\/td>\n285<\/td>\n30<\/td>\n18<\/td>\n75<\/td>\n35<\/td>\n10\u00d74.5<\/td>\n60<\/td>\n18\u00d764.4<\/td>\n84<\/td>\n<\/tr>\n
155<\/td>\n<\/td>\n295<\/td>\n252<\/td>\n155<\/td>\n220<\/td>\n275<\/td>\n605<\/td>\n220<\/td>\n250<\/td>\n305<\/td>\n35<\/td>\n21<\/td>\n85<\/td>\n40<\/td>\n12\u00d75<\/td>\n70<\/td>\n20\u00d774.9<\/td>\n129<\/td>\n<\/tr>\n
175<\/td>\n<\/td>\n314<\/td>\n282<\/td>\n175<\/td>\n240<\/td>\n310<\/td>\n675<\/td>\n250<\/td>\n273<\/td>\n348<\/td>\n40<\/td>\n21<\/td>\n85<\/td>\n45<\/td>\n14\u00d75.5<\/td>\n80<\/td>\n22\u00d785.4<\/td>\n157<\/td>\n<\/tr>\n
200<\/td>\n<\/td>\n342<\/td>\n320<\/td>\n200<\/td>\n280<\/td>\n360<\/td>\n749<\/td>\n290<\/td>\n305<\/td>\n390<\/td>\n40<\/td>\n24<\/td>\n95<\/td>\n50<\/td>\n14\u00d75.5<\/td>\n85<\/td>\n22\u00d790.4<\/td>\n224<\/td>\n<\/tr>\n
250<\/td>\n<\/td>\n420<\/td>\n400<\/td>\n250<\/td>\n315<\/td>\n460<\/td>\n920<\/td>\n380<\/td>\n375<\/td>\n475<\/td>\n45<\/td>\n28<\/td>\n110<\/td>\n60<\/td>\n18\u00d77<\/td>\n110<\/td>\n28\u00d7116.4<\/td>\n374<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

* Shared specification drawing with WPWKT. LL = housing length in vertical configuration. S = hollow bore H7 \u2014 driven shaft must be ground to h6\/js6. W\u00d7Y = bore keyway. Three shaft-direction positions (A\u2013C): motor side can face left, right, or front. Oil fill instructions for vertical orientation supplied with every unit.<\/p>\n<\/section>\n

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Product Structure \u2014 Vertical Hollow Bore + Flange Mount Face<\/h2>\n
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\"WPWKV<\/div>\n
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The WPWKV worm wheel shaft is through-bored to H7 tolerance with a downward-facing bore exit, and the housing is configured for vertical service \u2014 oil ports positioned for correct gear and bearing lubrication in the upright position. The flat flange mounting face bolts directly to pump heads and vessel nozzles, providing a rigid, compact drive assembly with the pump or agitator shaft engaging from below.<\/p>\n\n\n\n\n\n\n\n
Output Bore<\/td>\nH7 hollow bore, vertical downward exit; 16\u2013110 mm<\/td>\n<\/tr>\n
Mounting Face<\/td>\nFlanged face for pump heads, vessel nozzles, vertical structures<\/td>\n<\/tr>\n
Oil System<\/td>\nConfigured for vertical operation; correct gear and bearing immersion<\/td>\n<\/tr>\n
Self-Locking<\/td>\nAt ratios \u22651\/30 \u2014 prevents pump back-spin and agitator reversal<\/td>\n<\/tr>\n
Positions<\/td>\n3 shaft-direction positions (A\u2013C); motor side orientation options<\/td>\n<\/tr>\n
Housing<\/td>\nFC25 cast iron; vertical compact profile; run-tested upright<\/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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\u2b06\ufe0f<\/div>\n
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Hollow Bore + Vertical Output \u2014 No Right-Angle Adapter or Coupling<\/h3>\n

The WPWKV is the only WPW product that simultaneously delivers hollow bore coupling-free shaft engagement AND vertical output configuration. WPWV has vertical output but solid shaft. WPWK has hollow bore but horizontal. WPWKV delivers both \u2014 pump or agitator shaft slides in from below, no coupling required. Keywords: hollow shaft vertical flange worm reducer, coupling-free pump drive worm gearbox.<\/em><\/p>\n<\/div>\n<\/div>\n

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Correct Vertical Oil System for Hollow Bore Service<\/h3>\n

The WPWKV oil port is configured for correct lubrication in vertical service with the hollow bore facing downward. A horizontal hollow shaft unit used vertically would under-lubricate the upper gear end \u2014 the WPWKV’s vertical-optimised oil system prevents this.<\/p>\n<\/div>\n<\/div>\n

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Self-Locking Prevents Pump Back-Spin and Agitator Reversal<\/h3>\n

At ratios \u22651\/30, the WPWKV self-locks \u2014 preventing pump back-spin under system pressure, agitator gravity reversal, and vertical conveyor carrier rollback when the motor stops. The hollow bore ensures the shaft is rigidly engaged when self-locking holds the load.<\/p>\n<\/div>\n<\/div>\n

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\ufe0f<\/div>\n
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Flange Face Direct to Pump Head or Vessel Nozzle<\/h3>\n

The flat flange mounting face bolts directly to standard pump head flanges, vessel top nozzle plates, and vertical machine mounting structures. Flatness verified to \u22640.05 mm TIR \u2014 correct contact without shimming.<\/p>\n<\/div>\n<\/div>\n

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Hygiene Advantage for Food & Beverage Vessels<\/h3>\n

The hollow bore eliminates the coupling and coupling guard above the gearbox \u2014 removing a contamination risk point and difficult-to-clean surface from food vessel and brewery agitator top-entry drive assemblies.<\/p>\n<\/div>\n<\/div>\n

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16\u2013110 mm Bore Range \u2014 All Pump & Agitator Shafts Covered<\/h3>\n

Twelve sizes covering bore diameters from 16 mm (small pump drives) to 110 mm (large pump station and industrial agitator drives) provide the complete range of vertical hollow shaft pump and vessel drive requirements.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n

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Industry Applications<\/h2>\n

WPWKV is the coupling-free vertical hollow shaft solution for pumps, agitators, and vertical process equipment:<\/p>\n

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Irrigation & Pump Drives<\/strong>Agricultural irrigation pump drives, drainage pump vertical head drives, and industrial pump station vertical hollow shaft drives where the WPWKV bore slides directly onto the pump shaft.<\/span><\/div>\n

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\u2697\ufe0f<\/div>\n

Chemical Vessel Agitators<\/strong>Top-entry chemical vessel agitator hollow shaft drives where the agitator shaft slides up through the bore from below, eliminating coupling hardware in the vessel top structure.<\/span><\/div>\n

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Brewery & Food Vessel Drives<\/strong>Fermentation vessel and food mixing vessel top-entry agitator hollow shaft drives where coupling-free mounting and hygiene compliance are simultaneously required.<\/span><\/div>\n

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Biogas & Environmental Drives<\/strong>Biogas digester vertical hollow shaft agitator drives and environmental treatment vessel mixing drives requiring coupling-free hollow shaft direct engagement in vertical mounting.<\/span><\/div>\n

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Agricultural Grain Elevator Heads<\/strong>Grain elevator vertical head hollow shaft drives and seed conveyor elevator hollow shaft head drives for compact coupling-free vertical top mounting.<\/span><\/div>\n

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Industrial Pump Stations<\/strong>Industrial process pump station hollow shaft vertical drive heads and cooling water pump system hollow shaft vertical drives requiring direct bore engagement at the pump coupling housing.<\/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. Bore H7 plug gauged; flange face flatness verified (\u22640.05 mm TIR). Food-grade lubricant factory-fill available. Run-tested in vertical orientation \u2014 not horizontal.<\/p>\n<\/div>\n

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\u2b06\ufe0f Vertical Run Test + Bore Verification<\/h3>\n

Each WPWKV is run-tested upright in its vertical service orientation \u2014 noise (\u226472 dB(A)), oil seal integrity, and torque (\u00b15% of rated) all verified in the upright position. Bore H7 plug gauged and concentricity checked (\u22640.05 mm TIR) before run test. Vertical oil fill instruction sheet supplied with every unit.<\/p>\n<\/div>\n

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Material Standards<\/h3>\n

Housing: FC25 cast iron (\u2265250 MPa). Worm: 20CrMnTi (\u226558 HRC). Wheel: ZCuSn10Pb1. Food-grade lubricant (NSF H1) factory-fill on request for food vessel and brewery applications.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

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Why Choose Ever-power for WPWKV Gearboxes<\/h2>\n
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\"Ever-power<\/div>\n
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We supply WPWKV vertical hollow shaft universal worm gearboxes to agricultural pump equipment builders, brewery vessel manufacturers, and chemical equipment suppliers in Italy, Spain, the UAE, Australia, and over 60 countries. Our vertical run test standard \u2014 testing every WPWKV in its actual upright service position before shipment \u2014 ensures the product has been validated for vertical hollow shaft service before it leaves our facility.<\/p>\n