WDX & WDO Series Worm Gear Reducer_0100_05

WDX & WDO Series Worm Gear Reducer

The WDX/WDO series represents the highest level of integration within the W family’s dual-output configurations: an IEC B5 flange input (without an input coupling) combined with dual hollow-shaft outputs. The WDO model features coaxial dual shafts that are mechanically synchronized with precision, while the WDX model incorporates a secondary shaft positioned at a 90° angle.

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Description

The WDX & WDO Series worm gear reducer delivers the W family’s highest configuration density — combining an IEC B5 motor-mounting flange at the input face with dual hollow bore outputs, eliminating every coupling in the drive chain simultaneously. The WDO presents two co-axial hollow bores on opposite housing faces: both driven shafts slide directly in from opposite sides of the reducer, rotating at mechanically identical speed at all times from a single flanged motor. The WDX routes one bore at 90° via an internal bevel stage, addressing machine layouts where the two driven shafts cannot be co-axial. Together, WDO and WDX provide the W family’s answer to the WP family’s WPDKO and WPDX series — the same zero-coupling, motor-direct, synchronised twin-output configuration, but built to the W series dimensional convention that Australian legacy machinery was engineered around. Covering sizes 50–155, input powers 0.18–5.5 kW, bore diameters Ø17–Ø60 mm, and ratios 10:1–60:1. Manufactured to ISO 9001:2015, designed per AGMA 6034, and supplied by Ever-Power Worm Gear Reducer Co., Ltd. (Australia), 27 Harley Crescent, Condell Park NSW 2200.


WDO worm reducer IEC motor flange twin co-axial hollow bore output — Ever-Power Australia
WDX worm reducer IEC motor flange 90 degree dual hollow bore output — Ever-Power Australia

Key Specifications & Parameters — WDX & WDO Series

WDO — IEC Flange + Co-Axial Dual Bores

IEC B5 motor flange input (no coupling). Twin co-axial hollow bores on opposite faces — mechanically identical speed guaranteed. Best for parallel in-line synchronised shaft drives within W series machine layouts.

WDX — IEC Flange + 90° Dual Bores

IEC B5 motor flange input (no coupling). One bore co-axial with input axis; second bore exits perpendicular via bevel stage. Best for L-shaped twin-drive layouts in legacy W series machine envelopes.

Size Power (kW) Ratio A (mm) B (mm) BC (mm) Bore Depth E1 (mm) Flange LA (mm) Output Bore Ø (mm) Weight (kg)
50 0.18 10:1–60:1 165 145 50 90 115 Ø17 7
60 0.37 10:1–60:1 185 165 55 102 130 Ø22 10
70 0.37–0.75 10:1–60:1 209 195 65 120 130 Ø28 15
80 0.75–1.5 10:1–60:1 242 210 70 140 165 Ø32 23
100 1.5 10:1–60:1 310 253 90 165 165 Ø38 36
120 2.2–3.0 10:1–60:1 361 290 100 195 215 Ø45 55
135 3.0–4.0 10:1–60:1 412 320 110 230 215 Ø55 80
155 5.5 10:1–60:1 442 392 140 250 265 Ø60 120

What Are WDX and WDO — Maximum Integration in the W Family

WDO worm reducer dual co-axial bore detail IEC motor flanged on
WDX worm reducer 90 degree dual bore IEC flange input detail

The WDX and WDO complete the W family configuration matrix at its most integrated point. They are the W family’s counterparts to the WP family’s WPDKO and WPDX series — providing the same three-feature combination (IEC motor flange input + dual hollow bore outputs + no external couplings) within the W series dimensional convention. In the W family matrix:

W Family Model Input Type Output Count / Type Couplings Required
WO / WX Through-shaft coupling Dual hollow bore (co-axial or 90°) Input only
FCWDA / FCWDS IEC B5 flange Single hollow bore None
WDO IEC B5 flange Dual hollow bore (co-axial) None
WDX IEC B5 flange Dual hollow bore (90° offset) None

The practical value of the WDO over the WO for legacy Australian equipment is the elimination of the input coupling while maintaining W-convention bore dimensions. A WO-equipped machine that later requires IEC motor direct mounting — for an upgrade to a modern brake motor or servo drive — can be upgraded to WDO without changing the driven shaft dimensions, machine base mounting, or torque arm arrangement. The only difference at the machine interface is the input side: the WO’s through-shaft and coupling are replaced by the WDO’s IEC flange face and four motor bolts.

WDO WDX series full product range all sizes Ever-Power Australia

How to Select WDO or WDX — Four-Step Guide

  1. WDO or WDX? If both driven shafts are parallel and on the same axis (extending from opposite sides of the reducer symmetrically), specify WDO. If the second shaft must exit at 90° to the first, specify WDX. The IEC motor flange is on a single face in both variants — motor direction is independent of output geometry.
  2. Confirm W Convention vs WP Family: Verify driven shaft diameters against WDX/WDO bore Ø values (Ø17–Ø60 mm, W convention). If your shafts use WP-convention bore diameters (Ø17–Ø70 mm from WPDKO/WPDX), check whether the W bore matches — they often differ by 2 mm. When replacing an existing WO/WX unit, the WDO/WDX maintains bore diameter compatibility.
  3. Calculate Total Torque and Load Balance: Sum output torques from both driven loads (with SF 1.25–2.0) and confirm the WDO/WDX frame’s rated output torque is adequate. Confirm no single bore carries more than 70% of total rated torque alone — if unequal loading is possible (one load jams), specify a torque-limiting coupling on the lighter-loaded bore.
  4. Confirm IEC Motor Frame: WDO/WDX IEC flange acceptance follows the same motor-to-reducer size pairings as the FCWDA at equivalent frame sizes. Provide motor frame designation to Ever-Power for compatibility check before ordering.

Accessories We Also Supply: W-family torque arm kits (WDO/WDX specific), shrink disc assemblies for both output bores (Ø22+), IEC motor adaptor rings, torque-limiting couplings for unequal load protection, and DIN 6885 parallel keys. Contact Ever-Power Australia.

WDX & WDO Applications in Australian Industry

  • Legacy W-Convention Twin-Roll Conveyor Upgrades (All States): Australian food and materials handling facilities upgrading WO-equipped twin-roll conveyors to modern IEC brake motors — the WDO replaces the WO with the same W-convention bore dimensions and no machine modifications, while eliminating the motor coupling that previously required periodic maintenance.
  • Textile and Fabric Spreader Drives (Melbourne, Geelong): WDO on W-convention spreader roll drives where both rolls must advance at identical speed and the IEC motor must flange directly to the reducer for compact drive geometry. Retains W-series bore dimensions compatible with existing roll shafts.
  • Agricultural Twin-Rotor Implements (QLD, NSW, WA): WDX on dual-auger fertiliser spreaders and twin-rotor cultivators built to the W series dimensional convention — the 90° output places the IEC motor above the implement frame while both rotor shafts exit at machine level, matching legacy implement designs originally drawn around the WX unit.
  • Water Treatment Twin-Rack Gate Drives (Perth, Adelaide, Brisbane): WDO on irrigation gate drives in legacy W-convention infrastructure where both racks must advance identically — mechanical synchronisation eliminates differential advance that caused gate racking in VFD-synchronised systems, while IEC motor direct mount eliminates the coupling and motor base.
  • Food Processing Twin-Scraper and Roller Drives (Sydney, Melbourne): WDO at sizes 60–80 on twin-scraper mixer drives and double-roll press drives in W-convention food machinery, where a single flanged IEC motor drives both rollers without any couplings at any interface.
WDX WDO worm reducer installed on Australian twin roll conveyor and textile machinery

What Australian Customers Say About the WDX & WDO Series

★★★★★

“Upgraded our Melbourne W-convention twin-roll conveyors from WO to WDO. Same bore dimensions, same machine base, same torque arm attachment — only the motor side changed. Motor swap to IEC brake motor took 15 minutes. Eliminated the motor coupling maintenance that cost us 4 hours per unit per year.”

— Thomas K., Plant Engineer, Melbourne VIC

★★★★★

“WDX 100 on our QLD dual-auger spreader rebuild. Original WX unit dimensions maintained — the rotor shafts slid straight in and the 112B5 motor flanged straight on. The IEC motor direct mount is significantly cleaner than the old coupling arrangement. Operating for 16 months without issue.”

— Rob F., Implement Engineer, Emerald QLD

★★★★☆

“WDO 80 on our Perth twin-rack irrigation gate drive. Mechanical sync is perfect — no differential advance, no gate racking. IEC brake motor flanges directly. 4 stars because WDO can’t be upgraded to an FCWDS-type deeper bore — for our next build I might spec WPDKO instead. Great product otherwise.”

— Ian P., Water Infrastructure Engineer, Perth WA

★★★★★

“WDO 70 units for our Sydney food plant W-convention twin-scraper mixer drives. IEC 80B5 motor flanges directly, both scraper shafts enter the opposite bores, no couplings anywhere. The mechanical synchronisation is inherently correct — no VFD calibration, no speed drift over a production shift. Exactly what we needed.”

— Sarah W., Production Manager, Sydney NSW

Why Choose Ever-Power for WDX & WDO Worm Reducers in Australia?

Ever-Power Worm Gear Reducer Co., Ltd. (Australia) at 27 Harley Crescent, Condell Park NSW 2200 stocks WDO and WDX units across common frame sizes for 5–10 business day dispatch. Our engineering team provides free WO→WDO and WX→WDX upgrade assessments confirming dimensional compatibility before you commit to an order. Visit About Us and technical reference at worm-gearbox.top.

Frequently Asked Questions — WDX & WDO Series

1. How does WDO compare with WPDKO — can they interchange on the same machine?+
Both provide IEC flange input and co-axial dual hollow bore outputs. They are NOT dimensionally interchangeable: WDO uses W-convention bore diameters (e.g., Ø38 mm at size 100); WPDKO uses WP-convention bore diameters (e.g., Ø40 mm at equivalent centre distance). The housing outer dimensions also differ — W series is taller at equivalent centre distance than the WP series. For machines built around W series dimensions, specify WDO. For machines built around WP/IEC dimensions, specify WPDKO. Substituting one for the other requires re-machining the driven shaft bores and potentially modifying the machine base mounting.
2. If I upgrade from WO to WDO, do I need a new torque arm?+
The WDO uses the same housing casting and torque arm attachment points as the WO — the IEC flange is machined into the input face of the same housing, not a different housing. As a result, the existing WO torque arm can generally be retained when upgrading to WDO, as the housing dimensions, torque arm bolt pattern, and pivot pin position are unchanged. Confirm by comparing the WO and WDO dimensional drawings for your frame size — dimensional identity is maintained across the through-shaft and IEC-flange variants of the same W-family housing at each frame size. Contact Ever-Power for a dimensional confirmation before ordering.
3. Can WDO be used with an unequal load — one shaft loaded at 80% and the other at 20% of total torque?+
Yes — the WDO can operate with unequal bore loads. The worm wheel shaft distributes torque in proportion to the resistance presented by each bore’s load. An 80%/20% split is acceptable provided: (1) the total torque (sum of both loads, with service factors) does not exceed the frame’s rated output torque; and (2) each individual bore torque does not exceed the shaft’s rated torque at that cross-section. For extreme imbalance scenarios where one bore could briefly carry 100% of total rated torque (if the other load suddenly drops to zero due to a jam or decoupling), fit a torque-limiting coupling on the lighter-loaded bore, rated at approximately 30–40% of the WDO total rated torque to prevent overloading the stub shaft.
4. What is the lead time for WDX in non-standard sizes?+
Standard WDO and WDX units in frame sizes 70, 80, and 100 are typically stocked for 5–10 business day dispatch. Smaller frames (50, 60) and larger frames (120, 135, 155) may have 10–15 business day lead times if not in stock — confirm availability at time of order. Non-standard bore diameters (e.g., Ø25 mm in a size 70 WDO) require custom boring with a 2–3 week lead time. Non-standard IEC flange sizes (e.g., for unusual motor frames) require 3–4 weeks. Contact Ever-Power with your required frame size, bore diameters, and IEC motor frame for a firm availability and lead time confirmation.
5. Can shrink discs be used on both WDO output bores simultaneously?+
Yes — shrink discs can be specified for both WDO output bores simultaneously on bore sizes Ø22 mm and above (sizes 60–155). Using shrink discs on both bores achieves complete coupling-free engagement at all three interfaces — motor flange input (zero coupling), bore 1 (zero clearance shrink disc), bore 2 (zero clearance shrink disc). This three-point coupling-free arrangement is the most fretting-resistant and highest-torque-density configuration available in the W family and is recommended for continuous heavy-duty WDO applications such as large twin-roll press drives and heavy rotary table drives. Specify both driven shaft diameters at time of order for matched shrink disc sizing.

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