Опис
WPWKV Universal Hollow Shaft Worm Gear Reducer — Coupling-Free Vertical Output for Pump Drives, Top-Entry Agitators & Vertical Conveyor Heads
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 solves both by combining the H7 hollow bore of the WPWK series with the vertical flange mounting configuration of the WPWV platform — allowing the pump or agitator shaft to slide directly into the downward-facing bore without any coupling hardware.
Hollow bore diameters 16–110 mm, ratios 1/5–1/60, self-locking at ≥1/30 for pump back-spin prevention. The flange mounting face bolts directly to pump heads, vessel top nozzles, and vertical machine structures. Про Ever-power | Request a Bore Consultation
Technical Specifications
WPWKV shares the specification drawing with WPWKT. LL = housing length for vertical configuration; S = hollow bore H7; W×Y = bore keyway. Three shaft-direction positions (A–C). Reference speed 1500 r/min. All dimensions in mm.
| Size | Ratio | AB | B | CC | LL | M | N | E | E₁ | E₂ | G | Z | HS | U | T×V | S(bore) | W×Y | Wt(kg) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 40 | 1/5–1/60 | 87 | 85 | 40 | 63 | 90 | 187 | 70 | 72 | 97 | 12 | 10 | 25 | 12 | 4×2.5 | 16 | 6×18.8 | 5 |
| 50 | 108 | 105 | 50 | 70 | 120 | 226 | 95 | 90 | 110 | 14 | 12 | 30 | 12 | 4×2.5 | 20 | 6×22.8 | 8 | |
| 60 | 120 | 110 | 60 | 80 | 130 | 257 | 105 | 102 | 129 | 15 | 12 | 40 | 15 | 5×3 | 25 | 8×28.3 | 11 | |
| 70 | 140 | 130 | 70 | 95 | 150 | 305 | 115 | 120 | 155 | 20 | 15 | 50 | 18 | 5×3 | 30 | 8×33.3 | 15.5 | |
| 80 | 160 | 150 | 80 | 105 | 170 | 350 | 135 | 140 | 180 | 20 | 15 | 50 | 22 | 7×4 | 35 | 10×38.3 | 24 | |
| 100 | 190 | 160 | 100 | 135 | 190 | 410 | 155 | 165 | 215 | 22 | 15 | 50 | 25 | 7×4 | 40 | 12×43.3 | 38 | |
| 120 | 219 | 175 | 120 | 160 | 230 | 494 | 180 | 195 | 255 | 25 | 18 | 65 | 30 | 7×4 | 45 | 14×48.8 | 56 | |
| 135 | 249 | 210 | 135 | 185 | 250 | 559 | 200 | 230 | 285 | 30 | 18 | 75 | 35 | 10×4.5 | 60 | 18×64.4 | 84 | |
| 155 | 295 | 252 | 155 | 220 | 275 | 605 | 220 | 250 | 305 | 35 | 21 | 85 | 40 | 12×5 | 70 | 20×74.9 | 129 | |
| 175 | 314 | 282 | 175 | 240 | 310 | 675 | 250 | 273 | 348 | 40 | 21 | 85 | 45 | 14×5.5 | 80 | 22×85.4 | 157 | |
| 200 | 342 | 320 | 200 | 280 | 360 | 749 | 290 | 305 | 390 | 40 | 24 | 95 | 50 | 14×5.5 | 85 | 22×90.4 | 224 | |
| 250 | 420 | 400 | 250 | 315 | 460 | 920 | 380 | 375 | 475 | 45 | 28 | 110 | 60 | 18×7 | 110 | 28×116.4 | 374 |
* Shared specification drawing with WPWKT. LL = housing length in vertical configuration. S = hollow bore H7 — driven shaft must be ground to h6/js6. W×Y = bore keyway. Three shaft-direction positions (A–C): motor side can face left, right, or front. Oil fill instructions for vertical orientation supplied with every unit.
Product Structure — Vertical Hollow Bore + Flange Mount Face
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 — 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.
| Output Bore | H7 hollow bore, vertical downward exit; 16–110 mm |
| Mounting Face | Flanged face for pump heads, vessel nozzles, vertical structures |
| Oil System | Configured for vertical operation; correct gear and bearing immersion |
| Self-Locking | At ratios ≥1/30 — prevents pump back-spin and agitator reversal |
| Positions | 3 shaft-direction positions (A–C); motor side orientation options |
| Housing | FC25 cast iron; vertical compact profile; run-tested upright |
✅ Key Features & Benefits
Hollow Bore + Vertical Output — No Right-Angle Adapter or Coupling
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 — pump or agitator shaft slides in from below, no coupling required. Keywords: hollow shaft vertical flange worm reducer, coupling-free pump drive worm gearbox.
Correct Vertical Oil System for Hollow Bore Service
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 — the WPWKV’s vertical-optimised oil system prevents this.
Self-Locking Prevents Pump Back-Spin and Agitator Reversal
At ratios ≥1/30, the WPWKV self-locks — 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.
Flange Face Direct to Pump Head or Vessel Nozzle
The flat flange mounting face bolts directly to standard pump head flanges, vessel top nozzle plates, and vertical machine mounting structures. Flatness verified to ≤0.05 mm TIR — correct contact without shimming.
Hygiene Advantage for Food & Beverage Vessels
The hollow bore eliminates the coupling and coupling guard above the gearbox — removing a contamination risk point and difficult-to-clean surface from food vessel and brewery agitator top-entry drive assemblies.
16–110 mm Bore Range — All Pump & Agitator Shafts Covered
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.
Industry Applications
WPWKV is the coupling-free vertical hollow shaft solution for pumps, agitators, and vertical process equipment:
Irrigation & Pump DrivesAgricultural 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.
Chemical Vessel AgitatorsTop-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.
Brewery & Food Vessel DrivesFermentation vessel and food mixing vessel top-entry agitator hollow shaft drives where coupling-free mounting and hygiene compliance are simultaneously required.
Biogas & Environmental DrivesBiogas digester vertical hollow shaft agitator drives and environmental treatment vessel mixing drives requiring coupling-free hollow shaft direct engagement in vertical mounting.
Agricultural Grain Elevator HeadsGrain elevator vertical head hollow shaft drives and seed conveyor elevator hollow shaft head drives for compact coupling-free vertical top mounting.
Industrial Pump StationsIndustrial 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.
Quality Control & Certification
ISO 9001:2015 & CE
Full ISO 9001:2015 QMS. CE Declaration of Conformity. Bore H7 plug gauged; flange face flatness verified (≤0.05 mm TIR). Food-grade lubricant factory-fill available. Run-tested in vertical orientation — not horizontal.
⬆️ Vertical Run Test + Bore Verification
Each WPWKV is run-tested upright in its vertical service orientation — noise (≤72 dB(A)), oil seal integrity, and torque (±5% of rated) all verified in the upright position. Bore H7 plug gauged and concentricity checked (≤0.05 mm TIR) before run test. Vertical oil fill instruction sheet supplied with every unit.
Material Standards
Housing: FC25 cast iron (≥250 MPa). Worm: 20CrMnTi (≥58 HRC). Wheel: ZCuSn10Pb1. Food-grade lubricant (NSF H1) factory-fill on request for food vessel and brewery applications.
Why Choose Ever-power for WPWKV Gearboxes
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 — testing every WPWKV in its actual upright service position before shipment — ensures the product has been validated for vertical hollow shaft service before it leaves our facility.
- ✅ Vertical orientation run test — every unit tested upright
- ✅ Bore H7 + flange flatness verification — both checked per unit
- ✅ Food-grade lubricant option for food/brewery vessel applications
- ✅ Custom bore sizes for non-standard pump shaft diameters
- ✅ 20+ years export record — Italy, Spain, UAE, Australia and beyond
⭐ Customer Reviews
“We use WPWKV on our irrigation pump vertical hollow shaft drives. The bore slides directly onto the pump shaft with no coupling hardware above the pump — exactly the compact installation we need. The self-locking at 1/40 prevents back-spin when the system pressure drops on shutdown. Run-tested upright from Ever-power. Excellent product.”
Brian S., Irrigation Engineer
Agricultural Equipment, Queensland, Australia
“We integrate WPWKV into our top-entry vessel agitator drives. The hollow bore mounting eliminates the coupling guard from our vessel top structure — important for our ATEX zone 1 classified vessels where coupling guards can be ignition risk points. The vertical run test documentation was a useful compliance record.”
Francesco M., Equipment Engineer
Chemical Vessel Equipment, Bologna, Italy
“WPWKV for our fermentation vessel agitator hollow shaft vertical drives. The bore fits our agitator shaft directly, no coupling, and the self-locking prevents impeller movement when isolated for cleaning — important for our CIP procedures. Food-grade lubricant option used on all our food-contact drives. Consistent quality from Ever-power.”
Diego R., Plant Engineer
Winery Equipment, Tarragona, Spain
“WPWKV on our pump station vertical hollow shaft drives. The hollow bore coupling-free configuration is compact and the flange bolts directly to our pump heads. Good quality, bore dimensions correct. Delivery to UAE is reliable. Would recommend for vertical pump drive applications.”
Hassan A., Technical Manager
Industrial Pump Station, Sharjah, UAE
❓ Frequently Asked Questions
What is the difference between WPWKV and WPWV?
The WPWV has a solid vertical output shaft. The WPWKV has a hollow bore in the same vertical flange-mount configuration — allowing coupling-free direct engagement of the pump or agitator shaft through the bore rather than via a coupling to a solid shaft. Choose WPWV when a standard solid-shaft coupling connection is acceptable; choose WPWKV for coupling-free hollow bore direct shaft engagement.
How does the pump shaft engage with the WPWKV bore?
The pump shaft is ground to h6/js6 tolerance to match the H7 bore. With anti-gall grease applied, the shaft slides up into the bore from below; the keyway locks rotational engagement; a set screw provides axial retention. The entire connection takes approximately 10 minutes — no coupling alignment, no coupling hub, no torque arm.
What bore sizes are available and what pump shafts do they cover?
Standard bore diameters range from 16 mm (size 40, small agricultural pump drives) to 110 mm (size 250, large industrial pump drives), covering virtually all standard pump shaft diameters. If your pump shaft falls between standard sizes, custom bores are available — contact us with your pump shaft diameter.
Does the WPWKV need special lubrication for vertical service?
Yes — the WPWKV is configured with oil ports for correct fill in the vertical position. Every WPWKV is supplied with a vertical oil fill instruction sheet specifying the correct port and level. Do NOT use horizontal oil fill level instructions for the WPWKV — this results in inadequate gear mesh lubrication.
Can the WPWKV be used for food-contact vessel agitator drives?
Yes — on request, we factory-fill with NSF H1 registered food-grade gear oil for food-contact compliance. For hygienic machine requirements, also consider requesting: (1) epoxy coating on the external housing and (2) stainless steel external hardware. Contact us for a food-grade WPWKV specification for your vessel type.
Coupling-Free Vertical Pump & Agitator Drive — Get WPWKV Quote
The WPWKV eliminates the output coupling on your vertical pump or agitator drive. Our engineers will verify bore size and flange compatibility for your pump head or vessel nozzle.
