Description
O-X Series — Vertical-Output Single Worm Gear Reducer
The O-X Series groups two complementary output orientations under one product platform: the O-type with the output shaft pointing vertically upward and the X-type with it pointing vertically downward. Both are foot-mounted, belt- or coupling-driven, single-stage worm reducers built on the same cast-iron WP housing used across the entire range. Thirteen frame sizes (WP40–WP250), ratios from 5:1 to 60:1, and output torques up to 3,025 N·m make the O-X a practical right angle worm gearbox for hopper gates, vertical conveyors, tilting tables, and any drive where the load axis is vertical and the motor must be positioned off to the side.
Vertical-Drive Applications
Hopper and Bin-Gate Drives (O-Type)
Grain bins, ore hoppers, and fertiliser silos use slide or butterfly gates at the discharge point. An O-type reducer drives the gate screw from below or beside the bin, with the output shaft pointing upward into the gate mechanism. At ratios of 30:1 and above, the self-locking worm gearbox characteristic holds the gate at any intermediate position. Equipment integrators working with Schenck Process and Buhler hopper systems commonly use the WP80–WP135 O-type for this purpose.
Overhead Conveyor Drives (X-Type)
When the motor and reducer sit on a platform above the conveyor, the X-type positions the output shaft downward to drive the head pulley or sprocket below. This overhead layout keeps the drive assembly clear of floor traffic, product spillage, and wash-down water. Frame sizes WP100–WP175 cover the speed and torque range most overhead belt and chain conveyors need.
Performance Specifications
Values below apply at 1,500 r/min input under continuous duty. The O-X shares identical gear geometry and efficiency with all other single-stage WP models. The input shaft accepts belts, chains, or couplings from any standard speed reducer gearbox motor drive configuration. contact us for frame-specific dimension sheets.
| Frame (mm) | Ratios | Torque at 10:1 (N·m) | Peak Torque (N·m) |
|---|---|---|---|
| WP40 | 5:1 – 60:1 | 6 | 20 |
| WP60 | 5:1 – 60:1 | 19 | 73 |
| WP80 | 5:1 – 60:1 | 77 | 248 |
| WP100 | 5:1 – 60:1 | 80 | 344 |
| WP120 | 5:1 – 60:1 | 151 | 521 |
| WP155 | 5:1 – 60:1 | 270 | 1,260 |
| WP200 | 10:1 – 60:1 | 623 | 2,856 |
| WP250 | 10:1 – 60:1 | 850 | 3,025 |
O-type (upward) and X-type (downward) output orientations
Design and Build
The O-X housing is the same one-piece grey cast-iron casting used throughout the single-stage WP range, with foot pads machined on two perpendicular planes for flexible mounting. The output shaft exits through the top face (O) or bottom face (X) of the housing, sealed with a double-lipped NBR oil seal. The input side carries a solid shaft with keyway, supported on tapered roller bearings, protruding horizontally for pulley or coupling attachment. All internal components — 20CrMnTi worm shaft, ZCuSn10Pb1 bronze wheel, bearings, seals — are interchangeable with the DA, KA, DS, and every other single-stage variant of the same frame size.
Components and Spare Parts
Every wear component inside this reducer is available as an individual spare part, allowing targeted replacement rather than full-unit swap. Our Condell Park, NSW warehouse stocks parts for the complete range and ships across Australia and New Zealand. All internals are shared with the DA, KA, DS, DKA, and DKS single-stage models. A single spare-parts inventory covers every shaft and mounting variant in the WP single-stage family.
Worm Shaft
Case-hardened 20CrMnTi alloy steel, thread-ground to Ra 0.8 μm finish
Worm Wheel
Centrifugally cast ZCuSn10Pb1 tin-bronze, hobbed full-depth involute profile
Bearings
Tapered roller bearings handling combined radial and axial loads on both shafts
Seal & Gasket Kit
Double-lipped NBR oil seals, housing gaskets, breather plugs, and O-rings
Worm shaft, bronze wheel, bearings, and seal kits — all orderable separately
Lubrication Notes
When the output shaft points upward (O-type), verify the oil level covers the worm-wheel teeth fully. When it points downward (X-type), the standard fill mark on the sight glass applies. Use ISO VG 220–320 EP gear oil for temperatures up to 40 °C. First change at 100 hours, then every 2,500 hours or annually. Keep the breather plug above the oil line and clear of dust accumulation.
Customer Reviews
The O-type vertical output was exactly what we needed for our hopper-gate drives. Foot-mounted, belt-driven, self-locking at 40:1. Simple, rugged, and it just works.
Simon Tran
Millwright, Food Manufacturer
We run three X-type units on our cullet conveyor lines. The downward output lets us drive the conveyor head shaft from above the frame, keeping the motor off the floor and away from glass dust.
Helen Murray
Plant Supervisor, Glass Recycling
Specified the WP80 O-type for a vertical label-roll dispenser. Compact, quiet, and the self-locking holds the roll at any tension position. Customer is very happy with the result.
Jake Donovan
Automation Technician, Packaging OEM
Why Ever-Power Australia
We stock the full O-X range at our Condell Park, NSW warehouse. ISO 9001-certified, factory-tested, and supported by Sydney engineers who can advise on belt sizing, torque-arm placement, and mounting orientation. We also supply VRV030 precision worm gearbox for precision indexing and positioning applications. Call +61 2 9708 3322 or email [email protected].
Gear-grinding and housing-machining lines
