Opis
WPWDKV Flange-Mounted Universal Hollow Shaft Worm Gear Reducer — IEC Motor-Direct + Coupling-Free Vertical Pump & Agitator Drive in One Unit
The most demanding specification for a vertical pump or agitator drive is zero couplings at both ends: IEC motor direct-mount at the top (no input coupling), and coupling-free hollow shaft engagement at the bottom (no output coupling at the pump or agitator shaft), in a correctly lubricated vertical configuration that bolts directly to the pump head or vessel nozzle flange. The WPWDKV flange-mounted universal hollow shaft vertical worm gear reducer delivers exactly this specification in one product.
The WPWDKV is the premium motor-direct specification for pump stations, vessel agitator top-entry drives, and vertical process equipment — combining IEC motor convenience with coupling-free hollow shaft pump engagement and self-locking pump anti-back-spin. Motors 0.12–15 kW, bore 16–110 mm, ratios 1/5–1/60. O Ever-power | Request a Pump Drive Consultation
Technical Specifications
WPWDKV shares specification drawing with WPWDKT. LL = housing length for vertical configuration; S = hollow bore H7; W×Y = keyway. Motor flange: LA/LB/LC per IEC 60034-7. Three shaft-direction positions (A–C). Reference speed 1500 r/min. All dimensions in mm.
| Size | Power(kW) | Ratio | AC | B | CC | LL | M | N | E | E₁ | E₂ | G | Z | LA | LB | LC | LE | LZ | Q | U | T×V | S(bore) | W×Y | Wt(kg) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 40 | 0.12 | 1/5–1/60 | 75 | 85 | 40 | 63 | 90 | 187 | 70 | 72 | 97 | 12 | 10 | 115 | 95 | 140 | 4 | M8 | 31 | 11 | 4×12.8 | 16 | 6×18.8 | 5.4 |
| 50 | 0.18 | 83 | 105 | 50 | 70 | 120 | 226 | 95 | 90 | 110 | 14 | 12 | 115 | 95 | 140 | 4 | M8 | 31 | 11 | 4×12.8 | 20 | 6×22.8 | 8.5 | |
| 60 | 0.37 | 91 | 110 | 60 | 80 | 130 | 257 | 105 | 102 | 129 | 15 | 12 | 130 | 110 | 160 | 4 | M8 | 33 | 14 | 5×16.3 | 25 | 8×28.3 | 12 | |
| 70 | 0.37/0.75 | 109/111 | 130 | 70 | 95 | 150 | 305 | 115 | 120 | 155 | 20 | 15 | 130/165 | 110/130 | 160/200 | 4 | M8/M10 | 40/42 | 14/19 | 5×16.3/6×21.8 | 30 | 8×33.3 | 17 | |
| 80 | 0.75/1.5 | 125 | 150 | 80 | 105 | 170 | 350 | 135 | 140 | 180 | 20 | 15 | 165 | 130 | 200 | 4.5 | M10 | 48/52 | 19/24 | 6×21.8/8×27.3 | 35 | 10×38.3 | 26 | |
| 100 | 1.5 | 148 | 160 | 100 | 135 | 190 | 410 | 155 | 165 | 215 | 22 | 15 | 165 | 130 | 200 | 4.5 | M10 | 52 | 24 | 8×27.3 | 40 | 12×43.3 | 40.5 | |
| 120 | 2.2/3.0 | 181 | 175 | 120 | 160 | 230 | 494 | 180 | 195 | 255 | 25 | 18 | 215 | 180 | 250 | 5 | M12 | 63 | 28 | 8×31.3 | 45 | 14×48.8 | 59 | |
| 135 | 3.0/4.0 | 202 | 210 | 135 | 185 | 250 | 559 | 200 | 230 | 285 | 30 | 18 | 215 | 180 | 250 | 5 | M12 | 63 | 28 | 8×31.3 | 60 | 18×64.4 | 89 | |
| 155 | 5.5 | 247 | 256 | 155 | 220 | 275 | 605 | 220 | 250 | 305 | 35 | 21 | 265 | 230 | 300 | 5 | M12 | 83 | 38 | 10×41.3 | 70 | 20×74.9 | 138 | |
| 175 | 5.5/7.5 | 262 | 282 | 175 | 240 | 310 | 675 | 250 | 273 | 348 | 40 | 21 | 265 | 230 | 300 | 5 | M12 | 83 | 38 | 10×41.3 | 80 | 22×85.4 | 172 | |
| 200 | 11.0 | 285 | 320 | 200 | 280 | 360 | 749 | 290 | 305 | 390 | 40 | 24 | 300 | 250 | 350 | 6 | M16 | 114 | 42 | 12×45.3 | 85 | 22×90.4 | 246 | |
| 250 | 11.0/15.0 | 330 | 400 | 250 | 315 | 460 | 920 | 380 | 375 | 475 | 45 | 28 | 300 | 250 | 350 | 6 | M16 | 114 | 42 | 12×45.3 | 110 | 28×116.4 | 400 |
* Shared drawing with WPWDKT. LL = housing length for vertical configuration. S = hollow bore H7 (pump/agitator shaft to h6/js6). W×Y = keyway. Three positions (A–C): motor side orientation for pump head spatial constraints. Vertical oil fill documentation supplied with every unit.
Product Structure — IEC Flange Top + Hollow Bore Bottom + Vertical Housing
The WPWDKV positions the IEC motor flange at the top of the vertical housing (motor above) and the H7 hollow bore at the bottom (pump/agitator shaft enters from below). The flat flange mounting face bolts to the pump head or vessel nozzle. Oil ports are configured for correct lubrication in the upright service position. Three shaft-direction positions (A–C) allow motor orientation to suit pump station spatial constraints.
| Motor Input | IEC 60034-7 flange — motor at top; shaft direct, no input coupling |
| Output | H7 hollow bore — pump/agitator shaft from below; no output coupling |
| Mounting Face | Flanged face for pump heads, vessel nozzles, vertical structures |
| Self-Locking | At ratios ≥1/30 — prevents pump back-spin on motor stop |
| Positions | 3 positions (A–C) — motor side direction for spatial clearance |
| Motor Range | 0.12 kW (size 40) to 15 kW (size 250) |
✅ Key Features & Benefits
Zero Couplings at Both Ends in Vertical Pump Configuration
The WPWDKV is the only WPW product providing IEC motor-direct input AND hollow bore coupling-free pump shaft output in a correctly configured vertical housing. WPWDKT has both zero-coupling features but is configured for inclined service; WPWKV has hollow bore vertical but standard input shaft. WPWDKV delivers all three simultaneously for vertical pump and agitator drives. Keywords: IEC flange hollow shaft vertical pump drive worm reducer, motor-direct coupling-free agitator worm gearbox.
IEC Motor Swap at the Pump Head — No Pump Disturbance
When the motor fails on a WPWDKV-driven pump, the IEC flange allows motor replacement without removing or disturbing the pump shaft connection. For pump station drives where pump removal means system shutdown, this motor-swap-only maintenance procedure has direct commercial value.
Self-Locking Prevents Pump Back-Spin at Motor Stop
At ratios ≥1/30, the WPWDKV self-locks — preventing pump impeller back-spin driven by system pressure after motor stop. The hollow bore ensures the pump shaft is rigidly engaged while self-locking holds. For pump stations where water hammer from reverse rotation is a risk, WPWDKV self-locking provides passive protection without a check valve.
Three-in-One Mounting Simplicity
The WPWDKV mounting procedure involves: bolt IEC flange to motor (top), bolt mounting face to pump head (bottom), insert pump shaft into hollow bore (bottom). Three clean interfaces, zero couplings, zero alignment tasks — the simplest zero-coupling vertical pump drive assembly procedure available.
Hygiene and Compactness for Food & Beverage Vessels
The IEC flange and hollow bore eliminate all coupling hardware from both the motor connection and the agitator shaft connection above and below the gearbox — removing contamination risk points and reducing the total drive assembly height above the vessel, important in space-constrained food and beverage production facilities.
0.12 to 15 kW — All Pump and Agitator Drive Sizes
Twelve size groups covering bore 16–110 mm accept motors from 0.12 kW (small pump station auxiliaries) to 15 kW (large industrial pump drives) — the complete range of zero-coupling vertical pump and agitator drive requirements.
Industry Applications
WPWDKV is the premium zero-coupling specification for vertical pump and agitator motor-direct drives:
Pump Station Vertical Motor-Direct DrivesAgricultural and industrial pump station hollow shaft motor-direct vertical drives where IEC motor convenience at the top and coupling-free pump shaft engagement at the bottom are both specified.
Chemical Vessel Agitator Motor-Direct DrivesTop-entry chemical vessel hollow shaft agitator motor-direct drives where IEC motor-direct input and hollow bore direct agitator shaft engagement are required for maintenance simplicity.
Brewery & Food Vessel Motor-Direct DrivesFermentation vessel and food mixing vessel top-entry hollow shaft motor-direct agitator drives where zero-coupling design, food-grade lubricant compatibility, and compact motor-above configuration are all required.
Pharmaceutical Vessel Motor-Direct DrivesGMP pharmaceutical vessel hollow shaft motor-direct agitator drives where IEC motor-direct input enables clean motor maintenance in GMP environments and hollow bore eliminates coupling contamination risks.
Biogas & Environmental Hollow Shaft DrivesBiogas digester vertical hollow shaft motor-direct agitator drives and environmental water treatment vessel motor-direct hollow shaft drives requiring zero-coupling compact motor-above configuration.
Industrial Pump Station Premium DrivesIndustrial process pump station hollow shaft motor-direct vertical drives where the WPWDKV specification is the premium upgrade from standard pump drives — eliminating all coupling hardware and simplifying pump maintenance.
Quality Control & Certification
ISO 9001:2015 & CE
Full ISO 9001:2015 QMS. CE Declaration of Conformity. Flange face flatness CMM verified (≤0.05 mm TIR). IEC flange CMM + bore H7. Run-tested in vertical orientation. Food-grade lubricant (NSF H1) factory-fill option. GMP documentation for pharma applications.
⬆️ Three-Check + Vertical Run Test
Each WPWDKV: (1) IEC flange CMM (≤0.05 mm TIR); (2) bore H7 plug gauge + concentricity; (3) flange face flatness CMM (≤0.05 mm TIR); (4) run-tested in vertical upright orientation — noise ≤72 dB(A), seal, torque ±5%. Three interface checks + vertical run test, every unit.
Material & Food-Grade Options
Housing: FC25 cast iron. Worm: 20CrMnTi (≥58 HRC). Wheel: ZCuSn10Pb1. NSF H1 food-grade factory-fill lubricant on request for food/pharma vessel applications. GMP qualification documentation package available for pharmaceutical equipment.
Why Choose Ever-power for WPWDKV Gearboxes
We supply WPWDKV IEC motor-direct hollow shaft vertical worm gearboxes to agricultural pump equipment builders, brewery vessel manufacturers, and chemical and pharmaceutical equipment suppliers in Italy, Spain, the UAE, Australia, and over 60 countries. Our three-interface check and vertical run test standard ensures every WPWDKV delivers correct motor fit, correct pump shaft fit, correct mounting face contact, and correct vertical service performance — right out of the box.
- ✅ Three-interface check + vertical run test — every unit
- ✅ Flange face flatness CMM — ≤0.05 mm, no shimming at installation
- ✅ Food-grade lubricant option — NSF H1 for food/beverage/pharma
- ✅ Motor compatibility service — confirm before ordering
- ✅ 20+ years export record — Italy, Spain, UAE, Australia and beyond
⭐ Customer Reviews
“We use WPWDKV on our irrigation pump station vertical motor-direct drives. The IEC flange motor mounting at the top and hollow bore pump shaft engagement at the bottom give us zero coupling hardware in our pump station. Motor changes take 15 minutes without touching the pump or pipework. Self-locking prevents reverse rotation on system pressure. The ideal vertical pump drive.”
Thomas M., Pump Engineer
Agricultural Irrigation Equipment, Victoria, Australia
“We integrate WPWDKV into our top-entry hollow shaft vessel agitator motor-direct drives. The IEC flange motor-direct at the top eliminates the motor coupling from our vessel top assembly, and the hollow bore at the bottom eliminates the agitator coupling. Two coupling items removed from one product. Vertical run test documentation is an important quality record.”
Luca B., Equipment Engineer
Chemical Vessel Equipment, Milan, Italy
“WPWDKV for our fermentation vessel top-entry hollow shaft agitator motor-direct drives. Zero coupling at both ends reduces our hygienic maintenance burden, the IEC flange keeps motor changes clean, and the food-grade lubricant option satisfies our food safety requirements. The flange face fits our vessel nozzle precisely — no shimming required. Very satisfied.”
Carlos V., Plant Engineer
Winery & Beverage Equipment, Rioja, Spain
“WPWDKV on our pump station motor-direct hollow shaft vertical drives. The zero coupling input and output specification is what our pump station design requires. Good quality, all three interfaces dimensionally correct. Food-grade lubricant option satisfies our food processing client’s requirements. Reliable supply to UAE from Ever-power.”
Hamad J., Technical Manager
Industrial Pump Systems, Abu Dhabi, UAE
❓ Frequently Asked Questions
What is the difference between WPWDKV and WPWKV?
The WPWKV has a hollow bore vertical configuration with a standard input shaft (no IEC motor flange). The WPWDKV adds an IEC motor flange at the top of the vertical housing — enabling motor-direct operation at the top without an input coupling, while retaining the hollow bore coupling-free pump shaft engagement at the bottom. Choose WPWKV for standard input shaft pump drives; choose WPWDKV for IEC motor-direct zero-coupling vertical pump drives.
What is the installation sequence for the WPWDKV?
(1) Bolt the WPWDKV mounting face to the pump head or vessel nozzle flange (tighten anchor bolts to specification). (2) Apply anti-gall grease to the motor shaft; bolt the motor to the IEC flange; tighten flange bolts. (3) Apply anti-gall grease to the pump shaft; insert the pump shaft upward into the hollow bore from below; engage the keyway; tighten the set screw. Total installation time: approximately 25–35 minutes.
Can the WPWDKV motor be replaced with the pump shaft remaining engaged?
Yes — the IEC motor flange at the top is mechanically independent of the hollow bore pump shaft engagement at the bottom. The motor can be unbolted and replaced at the top while the pump shaft remains engaged in the bore at the bottom. The pump does not need to be removed or stopped during a motor swap.
What food-grade lubricant is recommended for WPWDKV in brewery applications?
We factory-fill with NSF H1 registered synthetic PAO food-grade gear oil (ISO VG 460) on request. This is suitable for incidental food contact compliance in breweries, wineries, and food processing facilities. Specify ‘NSF H1 food-grade lubricant’ at order placement. Drain interval: first change at 500 hours; thereafter every 3,000 hours under normal service conditions.
What is the maximum pump shaft diameter and input power for WPWDKV?
The largest standard bore is 110 mm (size 250) for large pump drives up to 15 kW motor input. For pump shafts above 110 mm or motor powers above 15 kW, contact us — we can assess whether a custom configuration is feasible for your specific pump specification.
Zero Couplings Top & Bottom — Get WPWDKV Pump Drive Quote
The WPWDKV eliminates the motor coupling above AND the pump shaft coupling below in one vertical unit. Our engineers will verify motor flange compatibility, bore size, and pump head flange dimensions for your application.
