✓ WPEA/WPES/WPEDA series · 18 configurations · EVER-POWER PTE. LTD.

Double Stage Worm Gearbox
Manufacturer and Supplier

Q: What is a double stage worm gearbox?

A double stage worm gearbox has two worm reduction stages in series achieving combined ratios of 1:100 to 1:3,600.

Q: What is the maximum ratio available?

Maximum combined ratio is 1:3,600 at size 250. Standard catalogue ratios run 1:100 to 1:900.

Q: What is the efficiency of a double stage unit?

Combined efficiency = Stage-1 x Stage-2 efficiency, typically 36-67% depending on ratio and speed.

Q: What is the MOQ and lead time?

MOQ 10 pieces. Sample 15-25 days. Production 30-45 days.

EVER-POWER WPE double-stage worm gear reducers cascade two worm stages for ultra-high reduction — ratio 1:100 to 1:3,600, output torque up to 9,066 N·m. 18 shaft-and-mounting configurations. ISO 9001:2015. Factory-direct from Singapore.

✉ Request a Quote Browse All 18 ↓

Product Range

SeriesWPEA / WPEDA / WPWE

Configurations18 types

Centre distance40–250 mm

Gear ratio1:100–1:3,600

Max torque9,066 N·m

効率性36–67%

Stages2 worm stages

MOQ10 pcs

⚙

1:100–1:3,600

Gear Ratio

🔩

9,066 N·m

Max Torque

🛡

HRC 58–62

Gear Hardness

🎒

2 Stages

Worm + Worm

📦

MOQ 10 pcs

OEM Available

Series Overview

Double Stage Worm Gearbox — All 18 Configurations

Grouped by motor connection and mounting method. Two worm stages in series — centre distance 40–250 mm, ratio 1:100–1:3,600, max torque 9,066 N·m.

Group 1 — Foot Mount, Solid Shaft Coupling input · 4 configurations · Max 9,066 N·m

WPEA

Standard Foot Mount

Foot mount · Solid shaft in/out · Ratio 1:100–1:900

9,066 N·m View →

WPES

Foot Mount + Output Flange

Foot mount · Solid shaft + B5/B14 flange · Dual output

9,066 N·m View →

WPEO

Vertical Upward Output

Foot mount · Vertical solid shaft output

9,066 N·m View →

WPEX

Double-Extended Shaft

Foot mount · Twin shaft ends

9,066 N·m View →

Group 2 — IEC Flange Direct Drive (D-Type) No coupling at motor · 4 configurations · Max 9,066 N·m

WPEDA

IEC Flange, Solid Shaft

IEC hollow bore in · Solid horizontal shaft out

9,066 N·m View →

WPEDS

IEC Flange, Shaft + Flange

IEC hollow bore in · Solid shaft + B5 flange out

9,066 N·m View →

WPEDX

IEC Flange, Twin Shaft

IEC hollow bore in · Double-extended shaft out

9,066 N·m View →

WPEDO

IEC Flange, Vertical Output

IEC hollow bore in · Vertical solid shaft out

9,066 N·m View →

Group 3 — Hollow Bore Output No coupling at output · 4 configurations · Max 9,066 N·m

WPEKA

Foot Mount, Hollow Bore

Foot mount · H7 hollow bore output

9,066 N·m View →

WPEKS

Foot + Flange, Hollow Bore

Foot mount · Hollow bore + B5 flange output

9,066 N·m View →

WPEDKA

IEC Flange, Hollow Bore Out

IEC hollow bore in · H7 hollow bore out

9,066 N·m View →

WPEDKS

IEC + Hollow Bore + Flange

IEC in · Hollow bore + flange out + foot support

9,066 N·m View →

Group 4 — Universal Multi-Position Any mounting orientation · 6 configurations · Max 9,066 N·m

WPWE

Universal, Solid Shaft

Multi-position · Solid horizontal shaft

9,066 N·m View →

WPWED

Universal, Twin Shaft

Multi-position · Double-extended shaft

9,066 N·m View →

WPWEKO

Universal, Hollow Bore Vertical

Multi-position · Hollow bore vertical output

9,066 N·m View →

WPWEK

Universal, Hollow Bore

Multi-position · H7 hollow bore output

9,066 N·m View →

WPWEDKO

Universal, IEC + Hollow Bore

Multi-position · IEC in · Hollow bore out

9,066 N·m View →

WPWEDK

Universal, IEC + Hollow + Flange

Multi-position · IEC in · Hollow + flange out

9,066 N·m View →

仕様

Double Stage Worm Gearbox — Key Parameters

Two cascaded worm stages · 20CrMnTi worm shafts · ZCuSn10Pb1 bronze wheels · HT250 housing · ISO 9001:2015

Size (mm)	Stage-1 Ratio	Stage-2 Ratio	Combined Ratio	Max Output Torque	効率性
P-Type (WPEA/WPES/WPEO/WPEX/WPEKA/WPEKS) · Foot/Face Mount · Stage 1 x Stage 2
40	1:5–1:20	1:5–1:60	1:100–1:900	236 N·m	3–5%
50	1:5–1:20	1:5–1:60	1:100–1:900	393 N·m	4–6%
60	1:5–1:20	1:5–1:60	1:100–1:900	638 N·m	4–7%
70	1:10–1:20	1:10–1:60	1:100–1:900	1,030 N·m	4–7%
80	1:10–1:20	1:10–1:60	1:100–1:900	1,485 N·m	4–7%
100	1:10–1:20	1:10–1:60	1:100–1:900	2,652 N·m	4–7%
135	1:10–1:20	1:10–1:60	1:100–1:900	6,445 N·m	5–8%
175	1:20	1:20–1:60	1:400–1:900	9,066 N·m	5–8%
200	1:20	1:20–1:60	1:400–1:900	9,066 N·m	5–8%
250	1:20	1:20–1:60	1:400–1:3,600	9,066 N·m	5–8%

ℹ D-type and Universal variants share the same stage ratios. Combined ratio = Stage-1 x Stage-2. Efficiency = Stage-1 x Stage-2 efficiencies. Contact EVER-POWER for non-standard combinations.

アプリケーション

Where Double Stage Worm Gearboxes Are Used

The WPE double-stage range serves applications requiring ultra-high reduction ratios (1:100 to 1:3,600), very low output speeds, and self-locking characteristics at ratios above 1:30 in both stages.

🚧

Slow-Speed Conveyor Drives

Apron conveyors, drag-chain conveyors, and walking-beam furnaces where output speeds of 0.1–5 r/min are required. WPEA 100–250 at ratio 1:900 delivers the required torque without external gearbox stacking.

WPEA 100–2500.1–5 r/min output

🏧

Winch and Lifting Equipment

Overhead crane hoists, marine anchor winches, and stage counterweight drives. WPEKA hollow bore mounts directly on the drum shaft. Self-locking in both stages eliminates brake requirements at ratios ≥ 1:30 per stage.

WPEKA/WPEDKASelf-locking dual stage

⚙

Mixer and Agitator Drives

Industrial mixing vessels, kneaders, and paint dispersers where high torque at very low speed is essential. WPEDA IEC flange coupling allows direct motor mounting. Torque up to 9,066 N·m sustained.

WPEDA 135–250Up to 9,066 N·m

🏭

Kiln and Dryer Drives

Rotary kilns, rotary dryers, and ball mills. Ultra-high ratio eliminates intermediate gearboxes in the drive train. WPWE universal mounting accommodates any installation orientation on the kiln tyre support.

WPWE / WPWEDAny mounting orientation

📋

Valve and Gate Actuators

Sluice gates, penstock drives, and large isolation valves. Dual self-locking prevents back-drive under water pressure or load. WPES dual output drives both sides of a gate simultaneously.

WPES / WPEDSDual output · Self-locking

🏙

Stage and Architectural Drives

Theatre flying rigs, architectural facade shading systems, and museum display turntables requiring silent, precise, ultra-low-speed movement. WPWE universal variant installs in any orientation.

WPWE / WPWEKOSilent · Ultra-low speed

How It Works

Double Stage Reduction — Principle and Advantages

Two independent worm reduction stages mounted in series inside a single housing. Each stage provides up to 1:60 reduction; combined ratios reach 1:3,600.

Motor drives Stage-1 worm shaft

The first 20CrMnTi worm shaft (HRC 58–62) is connected to the motor. It meshes with a ZCuSn10Pb1 bronze worm wheel at 90°, providing Stage-1 reduction (ratio 1:5–1:20 typically).

Stage-1 output drives Stage-2 input

The Stage-1 worm wheel is keyed to an intermediate shaft, which is directly connected to the Stage-2 worm shaft. No external coupling or intermediate shaft coupling required.

Stage-2 provides ultra-high reduction

The second worm stage meshes with a larger bronze wheel. Combined ratio = Stage-1 ratio x Stage-2 ratio. At 1:20 x 1:60 = 1:1,200. Output torque (theoretical) = Input torque x Combined ratio x η².

Self-locking in both stages

Both worm stages self-lock independently at ratios ≥ 1:30 per stage. Dual self-locking provides the highest level of load holding without external brakes — the output cannot back-drive the input under any static load condition.

WPE double stage worm gearbox cross-section

WPE Series — Two worm stages in series: Stage-1 worm shaft drives Stage-1 wheel, which is keyed to Stage-2 worm shaft driving Stage-2 wheel and output

Key Material & Performance Data

Worm shaft material20CrMnTi x 2

Surface hardnessHRC 58–62

Ground finishRa ≤ 0.8 μm

Worm wheel materialZCuSn10Pb1 x 2

ハウジング材質HT250 cast iron

Max combined ratio1:3,600

Efficiency (combined)36–67%

Self-lockingBoth stages ≥1:30

Selection Guide

How to Select the Right Double Stage Worm Gearbox

Answer three questions to identify the correct WPE variant. EVER-POWER confirms selection and size within 24 hours.

What output connection?

→

Keyed solid shaftWPEA / WPES / WPEX

Standard P-type. WPES adds flange, WPEX twin shaft ends.

→

Vertical solid shaftWPEO

Upward vertical output from foot-mounted housing.

→

Hollow bore (H7)WPEKA / WPEKS / WPEDKA

No coupling at output. WPEKS adds output flange.

How to connect the motor?

→

Coupling (solid shaft in)P-type: WPEA / WPES…

Standard solid input shaft with keyway. Any coupling type.

→

IEC flange directD-type: WPEDA / WPEDS…

Motor shaft slides into hollow bore. B5 or B14 IEC pattern.

→

Any orientationUniversal: WPWE / WPWED…

Multi-position housing. Mount in any orientation.

What ratio do you need?

→

1:100–1:400Size 40–135

Low end double-stage. Light to medium duty.

→

1:400–1:900Size 100–250

Standard double-stage range. Most common application.

→

1:900–1:3,600Size 175–250

Ultra-high ratio. Very low output speed applications.

ℹ Still unsure which model?

Send your required output torque, output speed (or combined ratio), mounting orientation, and motor frame size to [email protected]. EVER-POWER confirms within 24 hours with a dimensional drawing and full quotation.

メーカー

EVER-POWER PTE. LTD. — Factory Direct from Singapore

Singapore-registered. Hangzhou manufacturing. No intermediaries — factory pricing and ISO-certified quality on every order.

EVER-POWER worm gearbox factory Hangzhou

EVER-POWER Production Base · Hangzhou, China · 3 Plants · CNC Gear Hobbing · Heat Treatment · 100% Pressure-Test

EVER-POWER PTE. LTD.

Singapore Registered · Hangzhou Manufacturing · 20+ Years Experience

ISO 9001:2015 CE Certified Triple ISO

🏭

3 Plants

Manufacturing Facilities

CNC gear hobbing, case-hardening, grinding, assembly, 100% pressure-test. 50,000+ units/year.

🔬

HRC 58–62

Worm Shaft Hardness

Case carburising and quenching on every 20CrMnTi worm shaft. Ra ≤ 0.8 μm ground finish.

📦

100% Pressure-Test

Quality Assured

Every unit leak-tested at 2.5 bar before dispatch. MOQ 10 pcs. Sample 15–25 days.

🌎

50+ Countries

Global Export

DDP and DAP from Singapore. CE marking for European markets.

📋

Triple ISO

Quality Certified

ISO 9001:2015, ISO 14001 environmental, ISO 45001 occupational health.

⚡

24 h

Quote Response

Quotation with dimensional drawing returned within 24 hours.

All 18 Double Stage Worm Gearbox series

Shaft + flange · Foot

IEC in · Shaft + flange

IEC in · Hollow + flange

UNIV.

WPWE

Universal · Solid shaft

UNIV.

WPWED

Universal · Twin shaft

UNIV.

WPWEKO

Universal · Hollow vert.

UNIV.

WPWEK

Universal · Hollow bore

UNIV.

WPWEDKO

Universal · IEC + hollow

UNIV.

WPWEDK

Universal · IEC + flange

Also in the WP family:

Single Stage →Universal (Multi-Position) →Full WP Series →

よくある質問

01 What is a double stage worm gearbox? +

A double stage worm gearbox contains two independent worm reduction stages connected in series inside a single housing. Combined ratios of 1:100 to 1:3,600 are achieved. This eliminates the need to mount two separate gearboxes in tandem. For ratios below 1:100, a single stage unit is sufficient.

02 What is the maximum ratio available? +

The WPE series achieves a maximum combined ratio of 1:3,600 at size 250, combining a 1:60 Stage-1 with a 1:60 Stage-2. Standard catalogue ratios run from 1:100 to 1:900. Non-standard combinations up to 1:3,600 are available on request. Contact EVER-POWER to confirm for your specific application.

03 What is the efficiency of a double stage unit? +

Double stage efficiency = Stage-1 efficiency x Stage-2 efficiency. Typical values are 36–67%, depending on ratio and input speed. At higher ratios (1:900+), efficiency falls to 36–45%. Factor this into motor sizing: Motor power required = Output power ÷ Combined efficiency.

04 How does self-locking work in double stage? +

Both stages self-lock independently at ratios ≥ 1:30 per stage. For a unit with Stage-1 = 1:20 and Stage-2 = 1:30, Stage-2 self-locks but Stage-1 does not. For guaranteed dual self-locking, both stages must be ≥ 1:30. Contact EVER-POWER to confirm the correct stage ratio split for your holding requirement.

05 What is the MOQ and lead time? +

Standard configurations: MOQ 10 pieces. Sample units in 15–25 days. Production orders 30–45 days. Non-standard stage ratio combinations, shaft dimensions, and hollow bore sizes are accepted as OEM options with negotiated quantities.

06 Can I use a double stage unit in any orientation? +

P-type (WPEA, WPEKA…) and D-type (WPEDA, WPEDKA…) are designed for specific orientations. The Universal series (WPWE, WPWED, WPWEKO…) is designed for any mounting orientation including inverted, vertical shaft, and wall-mounted configurations. Lubrication oil fill quantities differ by orientation — EVER-POWER provides orientation-specific fill volumes at order.

✓ EVER-POWER PTE. LTD. · Singapore · ISO 9001:2015

Request a Quote — Double Stage Worm Gearbox

Provide your required output torque, combined ratio (or output speed), mounting orientation (P-type / D-type / Universal), centre distance, and quantity. Full quotation with dimensional drawing within 24 hours.

✉ Request a Quote Email Us Directly

📞 +65 8866 2737 · [email protected] · Singapore

Double Stage Worm GearboxManufacturer and Supplier

Request a Quote — Double Stage Worm Gearbox

Double Stage Worm Gearbox
Manufacturer and Supplier