Description
WPWEDKO Flange-Mounted Universal Hollow Shaft Double Speed Worm Gear Reducer — The Most Feature-Complete Product in the WPW Universal Series
The WPWEDKO represents the peak of integration in the entire WPW universal series — five features in one FC25 cast iron casting: IEC motor direct input (no input coupling), H7 hollow output bore (no output coupling), two-stage worm cascade (1/200–1/900 ultra-high ratio), extended multi-direction output housing (M, N, E, E₁, E₂ geometry for varied shaft connection angles), and WPW universal multi-orientation mounting with reinforced vertical load bearings and multi-face oil ports.
The WPWEDKO is specified for offshore platform hollow shaft drives, marine vessel agitator systems, and heavy-duty energy industry drives where zero couplings, ultra-high ratio, extended hollow bore reach, AND multi-orientation including vertical must all be specified together in one unit. 9 size groups, motors 0.12–5.5 kW, bore 30–110 mm, ratios 1/200–1/900. About Ever-power | Request Technical Consultation
Technical Specifications
WPWEDKO has its own specification drawing. BA = housing offset; BC, BE = housing body dimensions; HB = housing height; CA = output span; M, N, E, E₁, E₂ = multi-direction output geometry. Motor flange: LA/LB/LC/LE/LZ. Bore: S (H7); W×Y. Reference speed 1500 r/min. All dimensions in mm.
| Size | Power(kW) | Ratio | A | AB | B | BA | BC | BE | HB | CA | M | N | E | E₁ | E₂ | G | Z | LA | LB | LC | LE | LZ | Q | U | T×V | S(bore) | W×Y | Wt(kg) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 40-70 | 0.12 | 1/200–1/900 | 314 | 153 | 130 | 40 | 65 | 75 | 50 | 145 | 152 | 305 | 120 | 120 | 155 | 20 | 15 | 115 | 95 | 140 | 4 | M8 | 31 | 11 | 4×12.8 | 30 | 8×33.3 | 20 |
| 50-80 | 0.18 | 314 | 144 | 150 | 50 | 70 | 83 | 65 | 163 | 174 | 350 | 140 | 140 | 180 | 20 | 15 | 115 | 95 | 140 | 4 | M8 | 31 | 11 | 4×12.8 | 35 | 10×38.3 | 31 | |
| 60-100 | 0.37 | 1/200 | 387 | 175 | 160 | 60 | 90 | 91 | 75 | 191 | 224 | 410 | 190 | 165 | 215 | 22 | 15 | 130 | 110 | 160 | 4 | M8 | 33 | 14 | 5×16.3 | 40 | 12×43.3 | 48 |
| 70-120 | 0.37/0.75 | 1/300–1/400 | 425/445 | 193 | 175 | 70 | 100 | 109/111 | 90 | 229/231 | 264 | 494 | 220 | 195 | 255 | 25 | 18 | 130/165 | 110/130 | 160/200 | 4 | M8/M10 | 40/42 | 14/19 | 5×16.3/6×21.8 | 45 | 14×48.8 | 71 |
| 80-135 | 0.75/1.5 | 1/500–1/600 | 499 | 226 | 210 | 80 | 110 | 125 | 105 | 260 | 304 | 559 | 260 | 230 | 285 | 30 | 18 | 165 | 130 | 200 | 4.5 | M10 | 48/52 | 19/24 | 6×21.8/8×27.3 | 60 | 18×64.4 | 107 |
| 100-155 | 1.5 | 1/800 | 570 | 269 | 256 | 100 | 140 | 148 | 130 | 303 | 345 | 605 | 290 | 250 | 305 | 35 | 21 | 165 | 130 | 200 | 4.5 | M10 | 52 | 24 | 8×27.3 | 70 | 20×74.9 | 166 |
| 120-175 | 2.2/3.0 | 1/900 | 631 | 287 | 282 | 120 | 150 | 181 | 155 | 356 | 374 | 675 | 320 | 273 | 348 | 40 | 21 | 215 | 180 | 250 | 5 | M12 | 63 | 28 | 8×31.3 | 80 | 22×85.4 | 211 |
| 135-200 | 3.0/4.0 | 680 | 318 | 320 | 135 | 175 | 202 | 185 | 402 | 424 | 749 | 370 | 305 | 390 | 40 | 24 | 215 | 180 | 250 | 5 | M12 | 63 | 28 | 8×31.3 | 85 | 22×90.4 | 307 | |
| 155-250 | 5.5 | 815 | 380 | 400 | 155 | 200 | 247 | 203 | 497 | 510 | 920 | 440 | 375 | 475 | 45 | 28 | 265 | 230 | 300 | 5 | M12 | 83 | 38 | 10×41.3 | 110 | 28×116.4 | 484 |
* Independent specification drawing. BA = housing offset; CA = output shaft span; E, E₁, E₂ = multi-direction hollow bore output geometry. Motor flange: LA, LB, LC per IEC 60034-7. S = hollow bore H7; W×Y = keyway. Supports multiple mounting orientations including vertical — position-specific oil fill documentation supplied.
Product Structure — Five Features in One Casting
The WPWEDKO elongated housing accommodates all five features: IEC flange at the motor end, two worm-and-wheel stages in series for 1/200–1/900 ratio, H7 hollow bore at the extended output end, multi-direction output housing geometry (M, N, E, E₁, E₂) for varied shaft connection angles, and multi-face oil ports with reinforced output bearings for vertical and inclined service. All five in one casting.
| Feature 1 | IEC motor flange — no input coupling |
| Feature 2 | Two worm stages — ratio 1/200 to 1/900 |
| Feature 3 | H7 hollow bore (30–110 mm) — no output coupling |
| Feature 4 | Extended multi-direction output geometry (M, N, E) |
| Feature 5 | Universal multi-orientation mount + reinforced vertical bearings |
| Self-Locking | Strong static self-locking at all ratios ≥1/400 in all orientations |
✅ Key Features & Benefits
Five Features — The Peak of the WPW Series
The WPWEDKO provides: IEC motor-direct (no input coupling) + two-stage 1/200–1/900 ratio + hollow bore (no output coupling) + extended multi-direction output reach + universal multi-orientation mount. No other product in the WPW series combines all five. The WPWEDKO is specified when the application demands the maximum feature set from a single product number. Keywords: five-feature double speed hollow shaft universal worm reducer, motor-direct hollow bore ultra-high ratio multi-direction gearbox.
Offshore & Marine — Hollow Bore + Vertical + Ultra-High Ratio
Offshore platform agitator drives and marine vessel slow-speed auxiliary systems commonly need all five WPWEDKO features simultaneously: IEC motor-direct (for maintenance access in confined spaces), ultra-high ratio (for very slow rotation), hollow bore (for coupling-free direct shaft engagement), extended output reach (for agitator stub shaft depth), and vertical/inclined mounting (for offshore structural constraints).
IEC Motor Swap in Confined Offshore Spaces
In offshore and marine installations where working space is at a premium, the IEC flange enables motor replacement from one side of the unit without disturbing the hollow bore agitator shaft connection at the other end — critical in offshore machinery spaces where equipment removal is hazardous or impractical.
Self-Locking Prevents Back-Drive at Any Mounting Angle
At combined ratios ≥1/400, the WPWEDKO self-locks in all supported orientations — vertical, inclined, and horizontal. For offshore agitator drives and marine vessel equipment where back-driving under process pressure or vessel motion is a risk, this passive self-locking provides an important safety margin.
Correct Oil System for Multi-Orientation Double-Speed Service
Two worm gear stages in a multi-orientation housing require carefully configured oil ports to ensure both stages are correctly lubricated in each rated orientation. The WPWEDKO multi-face oil port system and position-specific oil fill documentation address this dual-stage lubrication requirement for each mounting position.
9 Size Groups for Complete Offshore & Marine Range
Nine size groups accepting 0.12 kW to 5.5 kW and bore 30–110 mm cover the complete range of offshore platform, marine vessel, and heavy energy industry slow hollow shaft drive requirements within the WPWEDKO product.
Industry Applications
WPWEDKO is specified for offshore, marine, and heavy energy applications where all five features must be available simultaneously:
Offshore Platform Agitator DrivesOffshore oil and gas platform deck agitator drives, subsea chemical injection system auxiliaries, and offshore crane slow-speed auxiliary drives requiring hollow bore direct mounting with IEC motor-direct and ultra-high ratio in offshore structural configurations.
Marine Vessel EquipmentShip-mounted mixing system motor-direct hollow shaft drives, vessel deck machinery slow drives, and marine desalination plant agitator drives where all five WPWEDKO features are simultaneously required in confined vessel structural spaces.
Wind & Renewable Energy OffshoreOffshore wind turbine pitch control auxiliary hollow shaft drives, tidal energy equipment slow drives, and wave energy converter auxiliary mechanisms requiring compact hollow shaft high-ratio IEC motor-direct drives in marine structural installations.
Heavy Energy InfrastructureLarge power plant cooling tower agitator slow motor-direct drives, heavy energy infrastructure hollow shaft drives, and offshore industrial facility auxiliary equipment requiring all five WPWEDKO features simultaneously.
Chemical & Mineral Processing VesselsDeep vessel hollow shaft agitator IEC motor-direct drives at 1/400–1/900 ratio, hydrometallurgy leaching vessel slow agitator drives, and specialty chemical reactor hollow shaft motor-direct drives requiring extended reach with ultra-high ratio.
Heavy Structural Positioning DrivesLarge structural slow positioning drives, heavy industrial turntable very-slow-rotation hollow shaft motor-direct drives, and bridge machinery auxiliary drives where all five features must be specified for the structural integration constraints.
Quality Control & Certification
ISO 9001:2015 & CE + Marine Docs
Full ISO 9001:2015 QMS. CE Declaration of Conformity. Marine classification documentation packages (material certs, SGS/BV inspection, CE DoC, oil fill documentation) available on request. Offshore operators in Norway, Singapore, and Gulf region have been supplied.
Five-Feature Verification Standard
Each WPWEDKO undergoes: (1) IEC flange CMM (≤0.05 mm TIR); (2) bore H7 plug gauge + concentricity CMM; (3) output shaft tip run-out (≤0.05 mm TIR); (4) vertical position oil fill verification; (5) 45-min two-stage run test — noise ≤75 dB(A), both stage seals, torque ±5%. Five checks, every unit.
Marine & Offshore Material Standards
Housing: FC25 cast iron. Both worm shafts: 20CrMnTi (≥58 HRC). Both wheel rims: ZCuSn10Pb1 tin-bronze. Full material mill certificates available for marine classification and offshore authority compliance. Anti-corrosion coating on request for marine environments.
Why Choose Ever-power for WPWEDKO Gearboxes
We supply WPWEDKO to offshore equipment suppliers, marine machinery manufacturers, and heavy energy industry equipment builders in Norway, Singapore, Australia, South Africa, and over 60 countries. The WPWEDKO’s five-check inspection standard — the most comprehensive in the WPW series — reflects the high stakes of offshore and marine applications where gearbox failure is not merely a production problem but a structural safety concern.
- ✅ Five-check inspection standard — flange, bore, shaft tip, oil fill, two-stage run
- ✅ Marine classification documentation — SGS/BV, material certs, CE DoC
- ✅ Anti-corrosion coating option for marine environments
- ✅ Custom bore sizes for offshore equipment non-standard shaft diameters
- ✅ 20+ years export record — Norway, Singapore, Australia, South Africa and beyond
⭐ Customer Reviews
“We use WPWEDKO on our offshore platform deck agitator hollow shaft motor-direct drives at 1/600 ratio. The five-feature combination is the only product that simultaneously addresses our offshore specification: IEC motor-direct for confined space motor maintenance, hollow bore for coupling-free shaft engagement, 1/600 ratio for our process requirement, extended output for our agitator depth, and vertical mounting for our structural frame. The five-check documentation satisfies our offshore quality requirements.”
Peter H., Offshore Equipment Engineer
Offshore Platform Supplier, Western Australia, Australia
“We integrate WPWEDKO into our offshore chemical injection system slow hollow shaft motor-direct drives. The five-feature specification addresses the specific compound requirement of offshore confined-space machinery drives. The marine classification documentation package from Ever-power satisfies our North Sea certification requirements. Consistent quality across multiple offshore project supply programmes.”
Erik L., Marine Engineer
Offshore Equipment Manufacturer, Stavanger, Norway
“We supply WPWEDKO to vessel builders in Singapore for ship-mounted mixing system drives. The five-feature product is exactly what marine agitator drives require: IEC motor-direct, ultra-high ratio, hollow bore, extended vertical reach, and correct oil system for vertical service. The SGS inspection reports and material certs satisfy our classification requirements.”
James C., Technical Manager
Marine Equipment Supplier, Singapore
“WPWEDKO for large flotation cell hollow shaft motor-direct slow agitator drives. The 1/400 ratio, IEC motor-direct input, hollow bore shaft engagement, extended output, and multi-direction mounting all suit our application. The five-check inspection report is a useful quality record. Delivery was slightly longer for our custom bore size but Ever-power communicated proactively throughout.”
John M., Drive Systems Engineer
Mining Equipment Supplier, Cape Town, South Africa
❓ Frequently Asked Questions
What makes the WPWEDKO the most feature-complete product in the WPW series?
The WPWEDKO uniquely provides: (1) IEC motor direct-mount (no input coupling), (2) two-stage 1/200–1/900 ratio, (3) H7 hollow bore output (no output coupling), (4) extended multi-direction output geometry (M, N, E, E₁, E₂), and (5) universal multi-orientation mounting with reinforced vertical bearings. No other WPW product combines all five features. The WPWEDKO is selected when the application requires all five simultaneously.
What is the difference between WPWEDKO and WPWEDK?
The WPWEDK has IEC flange + two-stage cascade + hollow bore + universal base in a standard compact housing. The WPWEDKO has the same four features PLUS an extended multi-direction output housing (M, N, E, E₁, E₂ dimensions) and reinforced vertical bearings for marine and offshore service. Choose WPWEDK for standard horizontal/low-incline compact precision slow drives; choose WPWEDKO when extended output reach, vertical mounting, or offshore structural constraints also apply.
Does the WPWEDKO oil system correctly lubricate both stages in the vertical position?
Yes — the WPWEDKO multi-face oil port system is configured to ensure both the first-stage and second-stage worm meshes receive correct oil immersion in the vertical service position. The vertical position oil fill instruction is supplied with every unit and specifies the correct fill port and level for the upright service orientation. Always confirm correct vertical oil fill per the supplied instructions.
What marine classification documentation is available for WPWEDKO?
On request: (1) material mill certificates for all major components; (2) SGS or BV third-party inspection report covering dimensional verification and two-stage run test; (3) CE Declaration of Conformity; (4) vertical orientation oil fill documentation; (5) product data sheets. These documents support marine classification society approval for vessel and offshore platform applications.
What is the maximum output torque of the WPWEDKO at 1/900 ratio?
At 1500 r/min input, size 155-250 with 5.5 kW motor at ratio 1/900 delivers approximately 9,066 Nm (from the WPED.WPEDK.WPWED.WPWEDK power and torque table). For size 135-200 at 1/900 with 4 kW: approximately 5,830 Nm. Contact our engineers for a precise calculation for your specific motor power and ratio selection.
Five Features, One Product — Get WPWEDKO Technical Consultation
When your offshore, marine, or heavy energy application requires all five features simultaneously, the WPWEDKO is the only product in the WPW series engineered for exactly this specification. Contact our engineers for a technical consultation and marine documentation quotation.
