EVER-POWER WP series single stage worm gearbox
✓ WPA/WPS/WPX/WPO series · 16 configurations · EVER-POWER PTE. LTD.

Single Stage Worm Gearbox
Manufacturer and Supplier

EVER-POWER WP single-stage worm gear reducers — 40–250 mm centre distance, ratio 1:5 to 1:60, up to 3,025 N·m. 16 shaft-and-mounting configurations. ISO 9001:2015. Factory-direct from Singapore.

Product Range
SeriesWPA/WPS/WPX/WPO
Configurations16 types
Centre distance40–250 mm
Gear ratio1:5–1:60
Max torque3,025 N·m
效率60–82%
Self-locking≥1:30
MOQ10 pcs
01
Series Overview
Single Stage Worm Gearbox — All 16 Configurations
Grouped by motor connection and mounting method — the two parameters buyers specify first. Ratio 1:5–1:60 · Centre distance 40–250 mm.
Group 1 — Foot Mount & Face Mount Coupling input · 8 configurations · Max 2,745 N·m
WPA Solid Horizontal Shaft
WPA
Solid Horizontal Shaft
Foot mount · Solid shaft in/out
2,745 N·m View →
WPS Shaft + Output Flange
WPS
Shaft + Output Flange
Foot mount · Shaft + B5/B14 flange
2,745 N·m View →
WPX Double-Extended Shaft
WPX
Double-Extended Shaft
Foot mount · Twin shaft ends
2,745 N·m View →
WPO Vertical Upward Output
WPO
Vertical Upward Output
Foot mount · Vertical solid shaft
2,745 N·m View →
WPKA Hollow Bore Output
WPKA
Hollow Bore Output
Foot mount · H7 hollow bore out
2,745 N·m View →
WPKS Hollow Bore + Flange
WPKS
Hollow Bore + Flange
Foot mount · Hollow bore + B5 flange
2,745 N·m View →
WPZ Vertical Face-Mount
WPZ
Vertical Face-Mount
Face mount · Vertical solid shaft
2,745 N·m View →
WPKZ Hollow Bore Vertical
WPKZ
Hollow Bore Vertical
Face mount · Hollow bore vertical
2,745 N·m View →
Group 2 — IEC Flange Direct Drive No coupling at motor · 5 configurations · Max 2,856 N·m
WPDA Solid Horizontal Shaft
WPDA
Solid Horizontal Shaft
IEC flange in · Solid shaft out
2,856 N·m View →
WPDS Shaft + Output Flange
WPDS
Shaft + Output Flange
IEC flange in · Shaft + B5 flange
2,856 N·m View →
WPDX Double-Extended Shaft
WPDX
Double-Extended Shaft
IEC flange in · Twin shaft ends
2,856 N·m View →
WPDO Vertical Upward Output
WPDO
Vertical Upward Output
IEC flange in · Vertical solid shaft
2,856 N·m View →
WPDZ Vertical Face-Mount
WPDZ
Vertical Face-Mount
IEC flange in · Vertical face-mount
2,856 N·m View →
Group 3 — IEC Flange + Hollow Bore Output Zero coupling at both ends · 3 configurations · Max 2,856 N·m
WPDKA Hollow Bore Output
WPDKA
Hollow Bore Output
IEC in · H7 hollow bore out
2,856 N·m View →
WPDKS Hollow Bore + Flange
WPDKS
Hollow Bore + Flange
IEC in · Hollow bore + B5 flange
2,856 N·m View →
WPDKZ Hollow Bore Vertical
WPDKZ
Hollow Bore Vertical
IEC in · Hollow bore vertical
2,856 N·m View →
02
规格
Single Stage Worm Gearbox — Key Parameters by Size
20CrMnTi worm shaft · ZCuSn10Pb1 bronze wheel · HT250 cast iron housing · ISO 9001:2015
Size (mm) Ratio Range Input Power (kW) Output Torque Output Speed (r/min) Self-Locking
P-Type (WPA/WPS/WPX/WPO/WPKA/WPKS/WPZ/WPKZ) · Foot/Face Mount
401:5–1:600.48
26 N·m
4–25≥1:30
501:5–1:600.80
43 N·m
7–25≥1:30
601:5–1:601.25
70 N·m
10–25≥1:30
701:10–1:601.60
113 N·m
15–25≥1:30
801:10–1:602.20
163 N·m
21–25≥1:30
1001:10–1:603.60
291 N·m
35–25≥1:30
1351:10–1:609.75
707 N·m
80–15≥1:30
1751:20–1:6017.30
1,221 N·m
150–25≥1:30
2001:20–1:6022.60
1,782 N·m
215–25≥1:30
2501:20–1:6027.40
3,025 N·m
360–25≥1:30

ℹ D-type rated at 2,856 N·m at size 250. Input power at 1,500 r/min.

03
应用
Where Single Stage Worm Gearboxes Are Used
The WP range serves any application requiring a 90° direction change, ratio 1:5–1:60, and compact self-locking at ratios above 1:30.
🚧
Conveyor and Material Handling

Belt conveyors, screw conveyors, and bucket elevators. WPA and WPKA sizes 80–250 are the standard choice. WPKA hollow bore mounts directly on the head pulley shaft — no coupling required.

WPA/WPKA 80–250Self-locking ≥1:30
🌾
Agricultural Equipment

Grain augers, TMR mixers, irrigation reel drives. WPA 40–135 suits tight machine frames. WPO provides vertical output for upright-shaft implements. WPDA offers IEC direct coupling.

WPA/WPO 40–135Right-angle drive
⚙
Packaging and Automation

Filling machines, capping heads, labelling stations. WPA 40–100 provides low-vibration drive. WPDA allows direct IEC motor coupling for rapid line changeover.

WPA/WPDA 40–100Low vibration
🏭
Heavy Industrial Drives

Rotary kiln drives, mixing drums, and crusher conveyors. WPA and WPDA sizes 155–250 deliver sustained torque up to 3,025 N·m. Cast iron housings resist shock loads.

WPA/WPDA 155–250Up to 3,025 N·m
🡇
Vertical Lifting and Actuators

Lifting columns, screw jacks, elevation actuators. WPO and WPDO provide upward output. WPDKZ eliminates all coupling hardware for the most compact vertical drive column.

WPO/WPDO/WPDKZVertical output
🏨
Hoist and Winch Drives

Drum shaft drives for hoists, winches, cable reels. WPKA 100–250 mounts directly on the drum shaft via hollow bore. Self-locking holds load at ratios 1:30 and above.

WPKA 100–250Self-locking drum
04
How It Works
Worm Gear Reduction — Principle and Materials
Understanding the single-stage worm drive mechanism and the materials that determine efficiency, durability, and self-locking behaviour.
1
Motor drives the worm shaft

20CrMnTi worm shaft (HRC 58–62, Ra ≤ 0.8 μm) rotates at input speed. Helical threads engage the bronze worm wheel.

2
Speed reduced, torque multiplied

ZCuSn10Pb1 bronze wheel meshes at 90°. Output torque = Input torque x Ratio x Efficiency.

3
Self-locking at ≥ 1:30

Lead angle falls below friction angle. Output cannot back-drive the input under static load — no external brake needed.

4
Output via shaft or hollow bore

Solid keyed shaft (WPA/WPS), hollow bore (WPKA/WPDKA), twin shaft (WPX), or vertical output (WPO/WPDO).

WP series worm gearbox cross-section internal structure
WP Series — Cross-section showing 20CrMnTi worm shaft, ZCuSn10Pb1 bronze wheel, HT250 housing, and NAK/SKF lip seals
Key Material & Performance Data
Worm shaft20CrMnTi steel
Surface hardnessHRC 58–62
Ground finishRa ≤ 0.8 μm
Worm wheelZCuSn10Pb1 bronze
CastingCentrifugal cast
HousingHT250 cast iron
效率60–82%
Pressure test2.5 bar leak-tested
05
Selection Guide
How to Select the Right Single Stage Worm Gearbox
Answer three questions to identify the correct WP variant. EVER-POWER confirms selection within 24 hours.
Q1
What output connection?
→
Keyed solid shaftWPA/WPS/WPX/WPO
Foot mount. WPS adds flange, WPX twin ends, WPO vertical up.
→
Hollow bore (H7)WPKA/WPKS/WPKZ
No coupling at output. WPKS adds flange, WPKZ vertical.
→
Vertical face-mountWPZ / WPKZ
Housing bolts to vertical frame. WPZ solid shaft, WPKZ hollow.
Q2
How to connect the motor?
→
Coupling shaft inP-type: WPA/WPS/WPX…
Standard solid input shaft with keyway. Any coupling type.
→
IEC flange directD-type: WPDA/WPDS…
Motor shaft slides into hollow bore. B5 or B14 IEC pattern.
→
IEC + hollow bore outWPDKA/WPDKS/WPDKZ
Zero coupling at both ends. Most compact arrangement.
Q3
What size do you need?
→
Up to 163 N·mSize 40–80
Light duty: conveyor feeders, agricultural, packaging.
→
291–848 N·mSize 100–155
Medium duty: conveyor drives, mixer heads, hoist drums.
→
1,221–3,025 N·mSize 175–250
Heavy duty: rotary kilns, crushing, mixing drums.
ℹ Still unsure which model?
Send your required torque, output speed, gear ratio, mounting orientation, and motor frame size to [email protected]. EVER-POWER confirms the correct series and size within 24 hours, with a dimensional drawing and full quotation.
06
Manufacturer
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
EVER-POWER worm gearbox factory workshop
3 Plants
Manufacturing Facilities
CNC gear hobbing, case-hardening, grinding, assembly, 100% pressure-test. 50,000+ units/year.
EVER-POWER worm shaft heat treatment process
HRC 58–62
Worm Shaft Hardness
Case carburising and quenching on every 20CrMnTi worm shaft. Ra ≤ 0.8 μm ground finish.
EVER-POWER worm gearbox 100% pressure test
100% Pressure-Test
Quality Assured at Dispatch
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 16 Single Stage Worm Gearbox ser
P-TYPE
WPA
Solid shaft · Foot mount
P-TYPE
WPS
Shaft + flange output
P-TYPE
WPX
Double-extended shaft
P-TYPE
WPO
Vertical upward output
P-TYPE
WPKA
Hollow bore output
P-TYPE
WPKS
Hollow bore + flange
P-TYPE
WPZ
Vertical face-mount
P-TYPE
WPKZ
Hollow bore vertical
D-TYPE
WPDA
IEC input · Solid shaft
D-TYPE
WPDS
IEC input · Shaft + flange
D-TYPE
WPDX
IEC input · Twin shaft
D-TYPE
WPDO
IEC input · Vertical up
D-TYPE
WPDKA
IEC in · Hollow bore out
D-TYPE
WPDKS
IEC in · Hollow + flange
D-TYPE
WPDZ
IEC in · Vertical mount
D-TYPE
WPDKZ
IEC in · Hollow vertical
常见问题
01 What is a single stage worm gearbox? +
A single stage worm gearbox uses one worm shaft meshing with one bronze worm wheel to reduce input speed in a single step. Gear ratios of 1:5 to 1:60 are achievable in a compact 90° right-angle drive. For ratios above 1:60, a double stage unit is required.
02 What is the difference between P-type and D-type? +
P-type (WPA, WPS, WPX…) use an integral cast iron housing with solid shaft coupling input. D-type (WPDA, WPDS…) use a split housing with IEC hollow bore input flange — the motor shaft slides in directly without a coupling. D-type units carry a slightly higher torque rating (2,856 N·m vs 2,745 N·m at size 250).
03 At what ratio does the WP series self-lock? +
Static self-locking begins at ratios of 1:30 and above, where the worm lead angle falls below the friction angle. The output shaft cannot back-drive the input under static load. For hoist duty subject to shock loads, ISO 4301 recommends an independent brake alongside the inherent worm self-locking.
04 What lubricant does the WP series require? +
All WP units ship pre-filled with ISO VG220 mineral gear oil for ambient −30°C to 40°C. Switch to VG320–VG460 above 40°C. Change oil after the first 100 operating hours, then every 2,500 hours or 12 months. Synthetic oil recommended for 24-hour continuous duty.
05 What is the MOQ and lead time? +
Minimum order quantity is 10 pieces for standard configurations. Sample units in 15–25 days. Production orders typically 30–45 days. OEM options including non-standard ratios, shaft diameters, and keyway configurations are accepted.
06 Are dimensional drawings and CAD files available? +
2D DXF and PDF dimensional drawings for all standard WP sizes are available within 24 hours at no charge. STEP 3D CAD files available from 60 mm centre distance upward. Request via [email protected] with series code, size, and ratio.
✓ EVER-POWER PTE. LTD. · Singapore · ISO 9001:2015

Ready to Order or Request a Quote?

Provide your centre distance (40–250 mm), gear ratio (1:5–1:60), mounting type (P or D), and quantity. Full quotation with dimensional drawing returned within 24 hours. MOQ 10 pcs · Sample 15–25 days · DDP/DAP available.

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