WX & WO Series Worm Gear Reducer

WX & WO Series Worm Gear Reducer

The WO/WX series combines the W family’s through-input shaft (accessible from either side) with a dual-hollow-bore output configuration—the WO model features coaxial dual bores for precise mechanical synchronization, while the WX model incorporates a 90° secondary bore suitable for L-shaped layouts. The series covers sizes 40 through 135, with bore diameters ranging from Ø14 to Ø55 mm and speed ratios from 10:1 to 60:1.

Category:

Description

The WX & WO Series worm gear reducer is the most fully integrated configuration in the W family — combining the W series’ signature through-shaft solid input accessible from both sides with dual hollow bore outputs that mount directly onto the two driven machine shafts. The WO presents two co-axial hollow bores on opposite housing faces, mechanically guaranteeing identical speed on both driven shafts at all times from a single reducer and motor. The WX provides one co-axial hollow bore and a second at 90° via an internal bevel stage, addressing machine geometries where parallel dual outputs are not possible. Together, WO and WX deliver what no other single W series unit provides: zero output couplings, mechanically synchronised twin loads, and motor input flexibility from either side of the housing — all within the W family dimensional convention that legacy Australian industrial machinery was originally designed around. Covering sizes 40 through 135, gear ratios 10:1 to 60:1, manufactured to ISO 9001:2015 and designed per AGMA 6034 — supplied by Ever-Power Worm Gear Reducer Co., Ltd. (Australia), 27 Harley Crescent, Condell Park NSW 2200.

WO Series worm reducer through-shaft input dual co-axial hollow bore output — Ever-Power AustraliaWX Series worm reducer 90 degree dual hollow bore output through-shaft — Ever-Power Australia

Key Specifications & Parameters — WX & WO Series Worm Gear Reducer

WO Series — Co-Axial Dual Hollow Bore

Through-shaft input (either side) + two co-axial hollow bore outputs on opposite housing faces. Both bores rotate at mechanically identical speed. For symmetrical parallel twin-driven loads in W series machine envelopes.

WX Series — 90° Dual Hollow Bore

Through-shaft input (either side) + two hollow bore outputs at 90° offset. One bore co-axial with input axis; second bore exits perpendicular via bevel stage. For L-shaped twin-drive layouts in legacy W series machines.

Size Ratio Centre Dist. A (mm) Overall Length B (mm) Height H (mm) Bore Depth HL (mm) Input Shaft Ø (mm) Output Bore Ø (mm) Weight (kg)
40 10:1–60:1 148 123 45 72 25 Ø14 4.2
50 10:1–60:1 175 145 50 90 30 Ø17 6.5
60 10:1–60:1 195 165 55 102 40 Ø22 9
70 10:1–60:1 234 195 65 120 40 Ø28 14
80 10:1–60:1 264 210 70 140 50 Ø32 21
100 10:1–60:1 322 253 90 165 50 Ø38 33
120 10:1–60:1 385 285 100 195 65 Ø45 51
135 10:1–60:1 435 320 110 230 75 Ø55 75

What Are the WO and WX — The W Family’s Maximum Interface Density

The WO and WX represent the apex of the W family’s interface options. To understand their position, consider the full W family interface matrix:

W Family Model Input Output Count Output Type
W / WPW Through-shaft (both sides) Single Solid shaft
WA / WS Through-shaft (both sides) Single Hollow bore
WD (FCWD) IEC flange (single side) Single Solid shaft (W-class)
WO Through-shaft (both sides) Dual co-axial Dual hollow bore
WX Through-shaft (both sides) Dual 90° offset Dual hollow bore

The WO and WX complete the W family by addressing the one interface combination not available in any other W series configuration: dual hollow bore outputs with through-shaft input flexibility. In the WP family, the WPO and WPX provide dual hollow bore outputs but with single-side shaft input (requiring a motor from one fixed direction). The WO and WX provide the same dual hollow bore outputs but with the W series’ through-shaft input — the motor can couple to either side of the housing, giving the machine designer complete flexibility in motor positioning while still eliminating both output couplings and guaranteeing mechanical speed synchronisation between the two driven loads.

The WO produces mechanically exact identical speed on both output bores at all times because both bores are the same physical worm wheel shaft — there is no gear, chain, or belt between them. This is a fundamental physical guarantee, not an electronic approximation, and cannot drift, drift under load, or fail due to a sensor or controller fault. For Australian machinery builders specifying twin-roll conveyors, symmetrical tension rollers, or balanced dyeing ranges in legacy W series machine envelopes, this mechanical synchronisation in the W dimensional convention is the core value of the WO.

WO WX series worm reducer full product range all sizes dual hollow bore

How to Select WO or WX — Decision Guide for Australian Engineers

  1. WO or WX? If both driven shafts are co-axial (extending from opposite sides of the reducer on the same axis), specify WO. If the second driven shaft is at 90° to the first (L-shaped layout), specify WX. The through-shaft input is available from either side in both variants — motor positioning is separate from this output geometry decision.
  2. Confirm Bore Diameters: WO has identical bore diameters on both output faces. WX may have different bore diameters on the co-axial and 90° outputs — confirm with Ever-Power’s engineering team. Provide both driven shaft diameters when ordering.
  3. Calculate Total Torque: The WO/WX rated output torque is the total available across both bores. Sum both output load torques (with service factors applied) and confirm the total does not exceed the WO/WX frame rated output torque. For unequal loads, also confirm neither individual bore torque exceeds the shaft capacity — specify a torque-limiting coupling on the lighter-loaded bore if load imbalance risk exists.
  4. Legacy Machine Replacement: If replacing an existing WO or WX unit, provide the existing unit’s centre distance and bore diameters to Ever-Power for a confirmed interchange check. The W series bore diameters differ from the WP series (WPO/WPX) at equivalent frame sizes.
  5. Guard Unused Input Stub: The through-shaft input extends from both sides. Fit the unused side with a stub shaft cover plate per AS 4024.1 before commissioning.

Accessories We Also Supply: Through-shaft stub cover plates, torque arm kits (WO and WX specific), shrink disc assemblies (bore Ø22+), jaw couplings for through-shaft input, replacement oil seals, and DIN 6885 parallel keys. Contact Ever-Power Australia.

WO & WX Applications in Australian Industry

  • Legacy Twin-Roll Conveyor Replacement (All States): Australian food, packaging, and materials handling facilities operating WO or WX units in machinery built around the W dimensional convention require W-family bore dimensions for replacement — the WPO/WPX (WP series dual output) uses different bore diameters and would not interchange. Ever-Power WO and WX units provide true like-for-like replacement in these facilities.
  • New Twin-Shaft Drives in W-Convention Machines (Sydney, Melbourne): When upgrading or expanding a machine originally built around W series dimensional standards, the WO preserves dimensional consistency across the whole machine — no adaptor brackets, no bore size mismatches, and no dimensional reference drawings to update.
  • Dyeing and Textile Finishing (Melbourne, Geelong): Fabric spreader rolls, stenter pin-rail drives, and tension equalisation roller systems in W-series-equipped dyeing ranges, where WO’s mechanically identical bore speeds guarantee fabric width consistency without electronic speed correction.
  • Agricultural Twin-Rotor Implements (QLD, NSW, WA): Twin-rotor cultivators, dual-auger spreaders, and twin-roller seed crushers where the WX’s 90° second bore allows motor mounting above the implement frame while both rotors exit at ground level — a clean layout in legacy implement frames originally designed around the W series.
  • Industrial Gate and Flood-Gate Actuation (Perth, Adelaide, Brisbane): Twin-rack gate drives in irrigation and water treatment infrastructure where both rack-pinion outputs must advance at identical rates. The WO’s mechanical synchronisation eliminates the differential advance that causes gate racking in electronically synchronised systems.

What Australian Customers Say About the WO & WX Series

★★★★★

“Replaced WO 80 units in our Sydney food plant — 15-year-old W series twin-roll conveyors. The Ever-Power WO 80 went straight in with the original bore dimensions, original torque arms, no modifications. Mechanical speed sync is still perfect 14 months later. Zero electronic corrections needed since the rebuild.”

— Tony B., Engineering Manager, Sydney NSW

★★★★★

“WX 100 on our Melbourne textile stenter pin-rail drive. The 90° output places the motor at the machine top while the WX’s two bores feed both sides of the stenter frame symmetrically. Replaced a WX unit that had been running 25 years — Ever-Power WX is an exact dimensional match.”

— Ruth H., Maintenance Engineer, Melbourne VIC

★★★★☆

“WO 70 units on our QLD dual-auger spreader implements. The through-shaft lets us connect either from the tractor PTO side or from a secondary electric motor depending on the application. 4 stars only because delivery of size 135 took 12 days — standard sizes (70, 80, 100) were 7 days.”

— Barry G., Implement Engineer, Emerald QLD

★★★★★

“WO 100 on our Perth water treatment gate drives. Both rack outputs must advance identically — the mechanical synchronisation of the WO means we don’t need a synchronisation control loop and there’s no risk of differential advance jamming the gate in its guides. Rock-solid operation for 2 years.”

— Fiona D., Infrastructure Engineer, Perth WA

Why Choose Ever-Power for WO & WX Worm Reducers in Australia?

Ever-Power Worm Gear Reducer Co., Ltd. (Australia) at 27 Harley Crescent, Condell Park NSW 2200 stocks WO and WX units across all eight frame sizes with 5–10 business day dispatch. Our engineering team provides free legacy interchange confirmations against existing W series WO/WX units and WO vs WX configuration guidance. Visit About Us and technical reference at worm-gearbox.top.

Frequently Asked Questions — WX & WO Series Worm Gear Reducer

1. What is the difference between the WO/WX (W family) and the WPO/WPX (WP family)?+
Both provide dual hollow bore output worm reduction with mechanical speed synchronisation. The differences are: (1) Dimensional convention — WO/WX uses the W family dimensional standard (bore diameters Ø14–Ø55 mm, taller housing proportions); WPO/WPX uses the WP/IEC standard (bore diameters Ø14–Ø70 mm, IEC-standard housing proportions). These are NOT interchangeable at the same frame number — W100 and WP100 have different bore diameters. (2) Input — WO/WX has through-shaft input accessible from both sides as standard; WPO/WPX has single-side shaft input (dual access requires the WPDKO variant). Choose WO/WX for legacy W series machines or when through-shaft input flexibility is required. Choose WPO/WPX for IEC-standard machines and new designs.
2. Can the WO be used with one bore loaded and the other empty?+
Yes — one WO bore can be left unloaded (fitted with a shaft guard per AS 4024.1) while the other bore carries the full rated torque. In this configuration the WO functions as a single-output hollow bore reducer and the full rated torque is available at the active bore. However, using a WO for a single-output application is less cost-effective than specifying a WA or WS (single hollow bore W series units) which cost less than the WO due to the additional housing machining required for the WO’s second bore. Specify WO only when both output bores will be used now or in a planned future expansion.
3. What torque arm arrangement is used for the WO with two driven shafts?+
The WO housing reaction moment is absorbed by a single torque arm bracket mounted on the housing’s designated torque arm face. Since both output bores are on the same axis (the worm wheel shaft), the combined torque from both loads acts on the housing as a single moment in the same rotational direction — requiring only one torque arm to react it, regardless of how many bores are loaded. The torque arm kit for the WO is rated for the full combined output torque of both bores simultaneously. Torque arm kits specific to WO and WX (W family dimensions) are stocked by Ever-Power for all frame sizes.
4. Can a shrink disc be used on the WO bore instead of a key?+
Yes — shrink disc engagement is available for both WO bore outputs at Ø22 mm and above (sizes 60–135). Using a shrink disc on both bores provides zero-clearance, zero-backlash engagement that completely prevents bore fretting regardless of shaft engagement length or torque cycle pattern. This is particularly valuable in WO applications with reversing torque (twin reversible conveyors, twin-rack gate drives) where the clearance in a keyed connection allows micro-movement under torque reversal. Shrink disc kits for WO dual-bore engagement are available from Ever-Power — specify both driven shaft diameters when ordering.
5. Is the WO suitable for the same application as the WPO — or should I specify WPO for new machine designs?+
For new machine designs without legacy dimensional constraints, specify WPO/WPX — they use IEC-standard dimensions that align with European equipment, provide cross-brand interchange compatibility, and will be easier to source as replacement parts from multiple suppliers globally. Specify WO/WX when: (a) replacing an existing WO/WX unit in legacy W-series machinery where bore diameters must match original dimensions; (b) the machine was designed around the W series dimensional convention and upgrading to WP-family dimensions would require redrilling mounting holes or reboring driven shafts; or (c) the through-shaft input from either side is a genuine engineering requirement that the WPO (single-side input) cannot provide. Both WO and WPO provide equivalent mechanical synchronisation — the choice is dimensional, not functional.

Related products