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WPDO Flange-Mounted Vertical Single Speed Worm Gear Reducer — Compact Motor-Direct Drive for Non-Standard and Vertical Installation
Modern machine design increasingly demands drive components that can be installed in non-standard orientations — vertical lift shafts, inclined conveyor heads, gate post assemblies, and pump tower drives all require a gearbox that is as flexible in mounting as it is reliable in operation. The WPDO flange-mounted vertical worm gear reducer answers this need by combining an IEC motor direct-mount flange with up to six output shaft orientation configurations (A–F), covering the full range from horizontal to fully vertical installations.
The WPDO delivers the same precision worm-and-wheel performance as the WPDA series — the same FC25 cast iron housing, the same ZCuSn10Pb1 bronze worm wheel, the same ≤72 dB(A) noise specification — but with an extended oil-plug arrangement that maintains correct lubrication regardless of mounting angle. Available in 12 frame sizes (40–250 mm), motor powers from 0.12 to 15 kW, and ratios from 1/5 to 1/60. เกี่ยวกับเอเวอร์พาวเวอร์ | Request a Layout Consultation
Technical Specifications
WPDO shares the same housing envelope as the WPDX. Shaft-direction positions A–F cover six mounting orientations including horizontal and vertical. Reference input speed 1500 r/min. All dimensions in mm. Lubrication oil fill level must be set per the mounting orientation — see installation guide.
| Size | Power(kW) | Ratio | เอ | AB | BB | BC | CC | M | N | E | E₁ | E₂ | G | Z | LA | LB | LC | LE | LZ | Q | U | T×V | LS | S | W×Y | Wt(kg) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 40 | 0.12 | 1/5–1/60 | 135 | 75 | 74 | 45 | 40 | 94 | 184 | 70 | 74 | 86 | 10 | 10 | 115 | 95 | 140 | 4 | M8 | 31 | 11 | 4×12.8 | 28 | 14 | 5×3 | 5 |
| 50 | 0.18 | 151 | 83 | 97 | 50 | 50 | 116 | 220 | 90 | 93 | 102 | 15 | 12 | 115 | 95 | 140 | 4 | M8 | 31 | 11 | 4×12.8 | 40 | 17 | 5×3 | 8 | |
| 60 | 0.37 | 167 | 91 | 112 | 55 | 60 | 126 | 260 | 100 | 105 | 120 | 20 | 12 | 130 | 110 | 160 | 4 | M8 | 33 | 14 | 5×16.3 | 50 | 22 | 7×4 | 11 | |
| 70 | 0.37/0.75 | 200/202 | 109/111 | 131 | 65 | 70 | 156 | 295 | 120 | 130 | 150 | 20 | 15 | 130/165 | 110/130 | 160/200 | 4 | M8/M10 | 40/42 | 14/19 | 5×16.3/6×21.8 | 60 | 28 | 7×4 | 17 | |
| 80 | 0.75/1.5 | 225 | 125 | 142 | 70 | 80 | 175 | 320 | 140 | 130 | 150 | 20 | 15 | 165 | 130 | 200 | 4.5 | M10 | 48/52 | 19/24 | 6×21.8/8×27.3 | 65 | 32 | 10×4.5 | 22 | |
| 100 | 1.5/2.2/3.0 | 280 | 148 | 169 | 100 | 100 | 224 | 375 | 190 | 180 | 25 | 25 | 15 | 165 | 130 | 200 | 4.5 | M10 | 52 | 24 | 8×27.3 | 75 | 38 | 10×4.5 | 38 | |
| 120 | 2.2/3.0 | 333 | 181 | 190 | 100 | 120 | 266 | 450 | 220 | 185 | 215 | 30 | 18 | 215 | 180 | 250 | 5 | M12 | 63 | 28 | 8×31.3 | 85 | 45 | 12×4.5 | 64 | |
| 135 | 3.0/4.0 | 375 | 202 | 210 | 110 | 135 | 306 | 495 | 260 | 210 | 235 | 30 | 18 | 215 | 180 | 250 | 5 | M12 | 63 | 28 | 8×31.3 | 95 | 55 | 16×6 | 85 | |
| 155 | 5.5 | 448 | 247 | 252 | 140 | 155 | 350 | 590 | 290 | 254 | 295 | 35 | 21 | 265 | 230 | 300 | 5 | M12 | 83 | 38 | 10×41.3 | 110 | 60 | 18×7 | 118 | |
| 175 | 5.5/7.5 | 481 | 262 | 255 | 150 | 175 | 394 | 640 | 320 | 287 | 323 | 40 | 21 | 265 | 230 | 300 | 5 | M12 | 83 | 38 | 10×41.3 | 110 | 65 | 18×7 | 165 | |
| 200 | 11.0 | 543 | 285 | 319 | 175 | 200 | 440 | 710 | 370 | 290 | 360 | 40 | 24 | 300 | 250 | 350 | 6 | M16 | 114 | 42 | 12×45.3 | 125 | 70 | 20×7.5 | 200 | |
| 250 | 11.0/15.0 | 615 | 330 | 385 | 200 | 250 | 510 | 860 | 440 | 350 | 440 | 45 | 28 | 300 | 250 | 350 | 6 | M16 | 114 | 42 | 12×45.3 | 155 | 90 | 25×9 | 340 |
* Shared specification drawing with WPDX. E, E₁, E₂ = output shaft dimensions; BC = housing width extension. For vertical mounting (positions C, D, E, F), consult the WPDO installation guide for position-specific oil fill levels supplied with each unit.
Product Structure — Multi-Orientation Motor-Direct Design
The WPDO housing extends the WPDA design with additional oil-fill and drain ports on multiple housing faces, allowing the oil level to be correctly established regardless of mounting angle. The output shaft bearing arrangement is reinforced relative to the WPDA to handle the combined axial and radial loads generated in vertical and inclined mounting configurations.
| Motor Flange | IEC 60034-7 standard; precision pilot register to 0.05 mm TIR |
| Shaft Directions | Up to 6 positions (A–F): horizontal, vertical up, vertical down, inclined |
| Oil Ports | Multiple face-mounted fill/drain plugs — correct level for any orientation |
| Bearings | Reinforced output shaft bearings for combined axial/radial vertical loads |
| Input Drive | IEC keyed input bore — motor shaft mounts directly, no coupling |
| Self-Locking | Available at ratios ≥1/30 — passive load-hold for vertical applications |
✅ Key Features & Benefits
Six Mounting Positions — Maximum Layout Freedom
Up to six shaft-direction configurations (A–F) allow the WPDO to be installed horizontally, vertically with output shaft pointing up or down, and at intermediate angles. Combined with motor-direct input, this is the most installation-flexible product in the WP series. Keywords: vertical mount motor-direct gearbox, multi-position flange worm reducer.
Motor-Direct IEC Flange — No Coupling, No Alignment
The precision IEC 60034-7 pilot register eliminates coupling selection, alignment checking, and post-maintenance re-alignment. Motor shaft slides directly into the keyed input bore — the single most time-saving feature for maintenance technicians working in confined vertical shaft housings.
Multi-Face Oil System for Correct Vertical Lubrication
Unlike the WPDA which has a single oil fill point optimised for horizontal mounting, the WPDO incorporates oil-fill and drain plugs on multiple housing faces. This ensures the worm gear set is correctly immersed in oil regardless of the mounting angle — a critical design detail that prevents premature wear in vertical installations.
Inherent Self-Locking at High Ratios
At ratios of 1/30 and above, the worm lead angle falls below the friction angle, providing passive load-holding. In vertical drive applications such as gate actuators, lift platforms, and vertical conveyors, this reduces the holding brake duty cycle and serves as a secondary safety measure against uncontrolled lowering.
Rugged Cast Iron with Reinforced Vertical Bearings
The FC25 cast iron housing and reinforced output shaft bearing selection handle the combined axial and radial loads specific to vertical and inclined mounting configurations, ensuring bearing life targets are met even in full vertical orientation under rated load.
Full Range Compatibility — 0.12 to 15 kW
12 frame sizes from 40 to 250 mm, accepting motors from 0.12 kW to 15 kW, cover the widest range of vertical and inclined drive applications — from small gate actuators to large vertical pump and stirring tower drives.
การประยุกต์ใช้ในอุตสาหกรรม
The WPDO is the motor-direct solution of choice for any drive application where horizontal foot-mounting is not possible:
Gate & Barrier AutomationIndustrial gate drive systems, parking barrier actuators, and security shutter motors where the WPDO’s vertical mounting and self-locking capability fit neatly into a gate post housing with a direct-mount motor.
Construction & Lifting EquipmentCompact goods lifts, scissor lift table drives, and building material hoist auxiliaries where vertical motor-gearbox integration reduces the drive envelope height in the lift shaft.
Agricultural Irrigation SystemsCentre-pivot irrigation drive motors, automated vent systems in greenhouses, and feed auger drives where outdoor mounting at non-standard angles is common and direct motor attachment simplifies maintenance.
Vertical Pump DrivesVertical pump tower drives, tank agitator motor-gearbox units, and deep well pump auxiliaries where the motor-direct vertical gearbox eliminates the need for a separate motor plate and coupling in the pump head assembly.
Marine Deck EquipmentHatch cover drive systems, winch auxiliaries, and anchor chain guide drives on vessels where installation space dictates vertical or inclined motor-gearbox positioning in the deck structure.
Special Machine AuxiliariesAny industrial machine where the motor must be mounted perpendicular to the ground plane (column drilling machines, vertical axis rotary tables, lathe tail-stock drives) and standard horizontal gearboxes cannot be used.
Quality Control & Certification
ISO 9001:2015 & CE
Full ISO 9001:2015 QMS with CE Declaration of Conformity per shipment. The WPDO’s multi-position oil-plug system is verified against the EN ISO 12100 machinery safety standard, and IEC flange dimensions are CMM checked to ≤0.05 mm TIR.
️ Multi-Orientation Run Test
Each WPDO unit is run-tested in both horizontal and vertical orientations to verify oil film formation, bearing lubrication adequacy, and oil-seal integrity in all specified mounting positions. Sump temperature and noise levels are measured in each orientation before shipment approval.
Material Standards
Housing: FC25 cast iron (≥250 MPa). Worm: 20CrMnTi (≥58 HRC). Wheel: ZCuSn10Pb1 tin-bronze. All materials comply with GB/T and IEC standards; third-party SGS or BV inspection available for marine and offshore equipment applications.
Why Choose Ever-power for WPDO Gearboxes
We supply WPDO motor-direct multi-orientation gearboxes to agricultural OEMs, marine equipment suppliers, gate automation specialists, and vertical pump manufacturers in the UK, India, France, Australia, and over 60 countries worldwide. Our engineering team specialises in non-standard mounting application support — we specify the correct oil fill position for every mounting angle, every time.
- ✅ Mounting angle oil-fill specification service — we provide position-specific instructions with every unit
- ✅ Multi-orientation run test as standard — tested horizontal and vertical before shipment
- ✅ Marine and offshore documentation — available on request for marine classification applications
- ✅ Agricultural OEM supply — catalogue-consistent dimensions for multi-year procurement programmes
- ✅ 20+ years export experience — established logistics to all major global markets
⭐ Customer Reviews
“We use WPDO-60 and WPDO-80 units on our industrial gate automation systems. The IEC flange mount is perfect for our standard motor range, and the vertical mounting capability fits neatly inside our gate post housings. Reliable operation in outdoor Australian conditions for over two years.”
Paul W., Mechanical Engineer
Gate Automation Systems, Perth, Australia
“We integrated WPDO-100 units into our vertical pump motor-head assemblies. The direct motor flange mount reduced our assembly height by 120 mm compared to our previous horizontal gearbox-plus-coupling arrangement. The multi-orientation oil fill system works exactly as specified. Excellent product.”
James H., Applications Engineer
Pump Equipment Manufacturer, Bristol, United Kingdom
“We specify WPDO gearboxes for our centre-pivot irrigation drive systems. The ability to mount the motor-gearbox unit at various angles to match the pivot arm geometry is essential for our machine design. Ever-power’s technical documentation is clear and the products arrive exactly as ordered.”
Priya R., Design Engineer
Agricultural Machinery OEM, Pune, India
“Good quality WPDO-80 units for deck hatch cover drives on a commercial vessel project. The units handle vertical mounting well and we had no lubrication issues after following the orientation-specific oil fill guidance. Slight delay on SGS inspection documentation but resolved promptly.”
Michel B., Project Manager
Marine Equipment Supplier, Nantes, France
❓ Frequently Asked Questions
How is the WPDO different from the WPO?
The WPDO and WPO both offer multi-orientation shaft-direction configurations and reinforced vertical bearings. The key difference is the input method: the WPO has a standard solid input shaft requiring a coupling to the motor, while the WPDO has an IEC flange with a keyed input bore for direct motor connection without a coupling. Choose WPO for indirect-drive arrangements; choose WPDO for motor-direct installation.
Do I need to change the oil fill when mounting the WPDO vertically?
Yes — this is essential. The correct oil fill level must be established for your specific mounting orientation. The WPDO housing has oil-fill and drain plugs on multiple faces precisely for this purpose. Every WPDO unit is shipped with a mounting-position-specific oil fill instruction card. Failure to adjust the oil level can result in inadequate lubrication of the worm gear set in vertical and inclined orientations.
Can the WPDO be used for vertical lifting with self-locking safety?
At ratios of 1/30 and above, the WPDO worm gearing exhibits self-locking behaviour that resists back-driving under static load conditions. This provides a passive secondary safety function for light vertical lifting. However, for safety-critical hoisting applications, the self-locking characteristic must not be relied upon as the primary safety device — always incorporate a dedicated mechanical brake as the primary safety measure per applicable machinery safety standards.
What is the maximum vertical load the WPDO output shaft can support?
The maximum permissible axial load on the WPDO output shaft depends on frame size and shaft direction position. The reinforced output shaft bearing arrangement handles significantly higher axial loads than the standard WPDA, but the specific maximum values depend on shaft length and mounting configuration. Please provide your application details — we will calculate the bearing life for your specific vertical load case and confirm suitability.
How do I know which shaft-direction position (A–F) to specify for my application?
The shaft direction position determines the relative orientation between the motor input axis and the output shaft axis. For standard vertical output (output shaft pointing downward, motor on top), specify position E or F. For output shaft pointing upward (motor below), specify position C or D. For horizontal configurations similar to the WPA, specify position A or B. Contact our engineering team with a sketch of your machine layout and we will confirm the correct WPDO shaft direction position.
Mount Anywhere, Drive Anything — Enquire About WPDO Today
Whether your application requires vertical, inclined, or horizontal motor-direct mounting, the WPDO provides the flexibility you need in one precision-built unit. Our engineers will specify the exact shaft direction and oil fill configuration for your layout.
