Description
QY Series Inclined-Output Worm Gear Reducer
The QY Series is a single-stage worm gear reducer with an inclined output shaft that exits the housing at an angle between horizontal and vertical. This geometry serves applications where the driven shaft runs on a slope — inclined conveyor head pulleys, tilted rotary screens, angled mixer drums — and a standard horizontal or vertical output would require an extra universal joint or bevel coupling to bridge the angle. Seven frame sizes from WP50 to WP135, ratios from 5:1 to 60:1, and output torques up to 690 N·m make the QY a compact, coupling-free solution for inclined power transmission. The foot-mounted, belt- or coupling-driven input keeps motor positioning flexible, and the cast-iron WP housing provides the same rugged construction found across the entire range.
Applications for Inclined Drives
Inclined Conveyors and Screens
Gravel-washing screens, inclined belt feeders, and trommel screens in mining and recycling plants operate at fixed angles between 15° and 45°. The QY output aligns directly with the driven shaft at these angles, eliminating the universal joint that a horizontal-output reducer would need. This removes a wear item and a potential vibration source. Frame sizes WP80–WP135 cover the torque range most inclined conveyor and screen drives require.
Tilted Mixer Drums
Concrete mixers, fertiliser blenders, and pharmaceutical drum coaters tilt their mixing vessel at a fixed angle to gravity. The QY’s inclined output shaft couples directly to the drum trunnion shaft, and the self-locking worm gearbox property at 30:1 and above holds the drum stationary during loading and discharge. Equipment builders working with Eirich and Liebherr mixer platforms use the QY in the WP70–WP120 range for this application.
Specifications
Data applies at 1,500 r/min input. The QY uses the same WP-platform gear geometry, bearings, and alloys as all single-stage models in the speed reducer gearbox range. contact us for frame-specific dimensional drawings and output-angle confirmation.
| Frame (mm) | Ratios | Torque at 10:1 (N·m) | Peak Torque (N·m) |
|---|---|---|---|
| WP50 | 5:1 – 60:1 | 9 | 35 |
| WP60 | 5:1 – 60:1 | 19 | 73 |
| WP70 | 5:1 – 60:1 | 39 | 95 |
| WP80 | 5:1 – 60:1 | 77 | 248 |
| WP100 | 5:1 – 60:1 | 80 | 344 |
| WP120 | 5:1 – 60:1 | 151 | 521 |
| WP135 | 5:1 – 60:1 | 219 | 690 |
Inclined output shaft angle and foot-mount layout
Build Quality
The QY housing is a one-piece grey cast-iron casting with foot pads machined flat for bolting to inclined machine frames or support brackets. The output bore exits through a machined face angled relative to the worm centreline. Internally, the unit shares every component with the standard WP range: case-hardened 20CrMnTi worm shaft, ZCuSn10Pb1 tin-bronze worm wheel, tapered roller bearings, and double-lipped NBR shaft seals. The input shaft protrudes horizontally for belt, chain, or coupling drive.
Components and Spare Parts
Every wear component inside this reducer is available as an individual spare part from our Condell Park, NSW warehouse, enabling targeted replacement rather than full-unit swap. QY internals are shared with the full WP single-stage range. One parts inventory covers every variant.
Worm Shaft
Case-hardened 20CrMnTi alloy steel, thread-ground Ra 0.8 μm
Worm Wheel
Centrifugally cast ZCuSn10Pb1 tin-bronze, full-depth involute
Bearings
Tapered roller bearings for combined radial and axial loads
Seal & Gasket Kit
Double-lipped NBR seals, gaskets, breather plugs, O-rings
Worm shaft, bronze wheel, bearings, and seal kits — all orderable separately
Customer Reviews
The QY inclined output was the only way to fit a reducer into our bottle-rinser drive space. Motor stays horizontal, output drops at 45 degrees into the rinser drum. Clean install, no custom brackets needed.
Daniel Park
Maintenance Planner, Beverage Plant
We use the QY on grain-cleaner rotary screens. The angled output matches the screen tilt perfectly and eliminates the universal joint we used with our old flat-output gearbox.
Rebecca Stone
Equipment Designer, Agricultural OEM
QY WP100 at 30:1 on our inclined-screen rake drive. Self-locking holds the rake mid-stroke during power dips. Reliable unit.
Ivan Kovalenko
Project Engineer, Wastewater
Maintenance
Use ISO VG 220–320 EP gear oil. Verify the oil level covers the worm wheel fully in the installed inclined position. First change at 100 hours, then every 2,500 hours or annually. Shell Omala S2 G 220 and Mobil DTE Oil BB are recommended.
Ever-Power Australia
We stock QY frame sizes at our Condell Park, NSW facility alongside the full WP range. We also supply NMRV standard worm gearbox for aluminium-housing applications. Call +61 2 9708 3322 or email [email protected].
ISO 9001-certified worm reducer manufacturing
