WPEDO Series Double Stage Worm Gearbox

WPEDO Series Double Stage Worm Gearbox

The WPEDO Series is an EVER-POWER double stage worm gearbox manufactured in Hangzhou and supplied factory-direct from Singapore. Gear ratios 1:200 – 1:900, max output torque 9,066 N·m, efficiency 40-60%. Input: IEC hollow bore. Output: Solid shaft. Mounting: Flange mounted (split D-type). Centre distance 40-175 mm. 20CrMnTi worm hardened to HRC 58-62. ISO 9001:2015 and CE certified. MOQ 10 pcs. Sample in 15-25 days. 24 h quote response.

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WPEDO Series Double Stage Worm Gearbox
ISO 9001:2015
CE

Entrada
IEC hollow bore
B5 / B14 motor flange

Output
Solid shaft
Vertical — upward

Ratio
1:200 – 1:900
Double stage

Max Torque
9,066 N·m
Size 135–135

Mounting
Flange mounted (split D-type)
40–175 mm

⚙
1:200 – 1:900
Gear Ratio
⚡
40–60%
Eficiencia
🔩
9,066 N·m
Max Output Torque
🛡
HRC 58–62
Gear Hardness
📐
40–175 mm
Centre Distance

01
Product Overview
WPEDO Series Double Stage Worm Gearbox — Technical Overview

El WPEDO Series Double Stage Worm Gearbox delivers IEC hollow bore motor input and very high two-stage reduction (1:200–1:900) with a vertical upward solid output shaft. This is the most compact solution for vertical slow-speed lifting and agitator applications requiring direct IEC motor coupling.

Split D-type HT250 housing for IEC motor flange mounting. Two 20CrMnTi worm shafts at HRC 58–62, ZCuSn10Pb1 bronze wheels. Efficiency 40–60%. Oil fill adjusted for vertical O orientation. Leak-tested to 2.5 bar.

Factory-direct from Singapore. Request a quotation or browse the double stage worm gearbox catalogue.

WPEDO worm gear reducer internal structure and component diagram

WP Series Worm Gear Reducer — Internal Structure and Main Components

02
Shaft Direction
WPEDO Series — Input and Output Shaft Orientations
Multiple shaft direction positions are available. Specify the position code when ordering. Oil fill volume changes with non-standard orientations — EVER-POWER confirms the required adjustment.

WPEDO worm gear reducer shaft direction diagram — input and output shaft orientation positions

WPEDO Series — Shaft Direction Diagram · A: input below · S: input above · O: output upward · X: output downward · T: input upward · V: input downward

Code Input Shaft Position Output Shaft Position Typical Use
A Horizontal — below centre (standard) Horizontal Horizontal conveyor drives, standard floor-mounted machines
S Horizontal — above centre Horizontal Overhead mounting, inverted or top-fed drives
O Horizontal Vertical — upward Lifting columns, vertical screw drives, hoist applications
X Horizontal Vertical — downward Gravity-assisted feed, downward discharge drives
T Vertical — upward Horizontal Vertical input from above, tower or mast drives
V Vertical — downward Horizontal Floor-level motor with downward vertical input shaft
ℹ IEC Input + Double Stage + Vertical Output — WPEDO Series
The WPEDO combines direct IEC motor coupling, very high ratio (up to 1:900), and vertical upward output in a single unit. At 1:900 the output shaft rotates at 1.67 r/min — suitable for very slow lifting columns and tower agitators. Oil fill must be adjusted for the O orientation.

03
Dimensional Drawing
WPEDO Series — Overall Dimensions and Mounting Geometry
Full dimensional data covering 40–175 mm centre distance range. 2D DXF and PDF drawings available within 24 hours at no charge.

WPEDO worm gear reducer dimensional drawing — overall dimensions mounting hole pattern and shaft sizes

WPEDO Series — Structural Dimensional Drawing · All dimensions in mm · Sizes 40–175 mm · DXF and PDF on request within 24 hours

Dimension Symbol Reference
A / AB Overall length / length excluding shaft extension B / BB Overall height / base plate height
CC Output shaft centreline height above base HS / U Input shaft diameter / usable shaft length
T x V Input shaft key width x key depth LS / S Output shaft usable length / diameter
W x Y Output shaft key width x key depth E / F / G / M / N Foot mounting hole positions and pitch

04
Especificaciones
WPEDO Series — Full Parameter Table
Input speed: 1,500 r/min · Housing: HT250 cast iron · Seal: NAK / SKF · Lubricant: ISO VG220 · MOQ: 10 pcs · Port: Shanghai / Ningbo

WPEDO worm gear reducer specification table — input power and output torque for all sizes and ratios (brochure p.18)

WPEDO Series — Parameter Table (brochure p.18) · Columns: Size · Ratio · A/AB/B/BB/CC/H/HL/M/N/E/F/G/Z · Input shaft HS/U/T×V · Output shaft LS/S/W×Y · Weight (kg) · Oil (L)

Talla Ratio Max Input (kW) Max Output Torque Weight (kg) Oil (L)
WPEDO Series · Split cast iron (D-type) · Flange mounted (split D-type) · 20CrMnTi Worm · ZCuSn10Pb1 Bronze Wheel · Input: 1,500 r/min
40–40 1/200–1/900 0.37

84 N·m

 16 0.30
60–60 1/200–1/900 0.93

303 N·m

 35 0.99
80–80 1/200–1/900 2.62

819 N·m

 81 2.95
100–100 1/200–1/900 5.51

2,745 N·m

 169 6.40
120–120 1/200–1/900 11.00

5,290 N·m

 344 13.60
135–135 1/200–1/900 14.00

9,066 N·m

 454 18.00

* Peak output torque at the highest-torque ratio per size · Full ratio-by-ratio data available — request the complete data sheet

05
Material and Construction
Engineering Specifications — WPEDO Series

Worm Shaft
Primary drive element
Alloy grade20CrMnTi
Surface hardnessHRC 58–62
Heat treatmentCase carburising + quenching
Surface finishGround, Ra ≤ 0.8 μm
Shaft core40Cr steel
Worm Wheel
Output driven element
Alloy gradeZCuSn10Pb1 tin-bronze
Tooth formZI involute profile
Bearing brandSKF / C&U / HRB
Shaft sealNAK / SKF lip seal
Leak test2.5 bar · 100% of units
Housing and Assembly
Structure and sealing
Housing gradeHT250 grey cast iron
Housing formSplit cast iron (D-type)
LubricanteISO VG220 gear oil
EntradaIEC hollow bore
OutputSolid shaft

06
Selection Correction Factors
Power Calculation and Correction Coefficient Tables
Apply correction factors a₁ and a₂ to the rated torque before selecting a gearbox size. Use Table 3 to verify motor input power.

Table 1
Ambient Temperature Correction Coefficient a₁
Ambient Temperature (°C) 10 – 25 26 – 30 31 – 40 41 – 50
a₁ 1.0 1.1 1.0 1.6

Table 2
Duty Condition Correction Coefficient a₂
Operating Condition Daily Running Hours (h)
≤ 2 h > 2 – 10 h > 10 – 24 h
Smooth running 0.8 1.0 1.2
Moderate shock load 1.0 1.2 1.4
Heavy shock load 1.25 1.5 1.75
ℹ If the gearbox starts, reverses, or changes direction 12 or more times per hour during operation, multiply the table value by an additional factor of 1.2.

Table 3
Input Shaft Power Calculation and Efficiency Coefficient u
Input Power Formula
P = T × n₂ ÷ (9550 × u)
P — Input shaft power (kW)
T — Corrected torque value (N·m)
n₂ — Output shaft speed (r/min)
u — Transmission efficiency (from table below)

Ratio 1:10 1:15 1:20 1:25 1:30 1:40 1:50 1:60
Efficiency u 0.76–0.90 0.75–0.86 0.74–0.84 0.72–0.82 0.68–0.70 0.65–0.75 0.62–0.72 0.60–0.70

07
Lubricación
Recommended Lubricants by Speed and Temperature
Select oil grade based on worm shaft speed and mounting orientation. Change after the first 100 operating hours, then every 2,500 hours.

Oil Grade Selection by Worm Shaft Speed and Operating Position
Worm Shaft Speed (r/min) Oil Type Upper Worm / Vertical Lower Output Shaft Vertical
Over Up to
1,000 3,000 Synthetic oils PG460 PG220
— 1,000 PG460
2,000 3,000 Mineral oils ISO VG460 ISO VG200
750 2,000 ISO VG320
250 750 ISO VG460
— 250 Mineral oils ISO VG660 ISO VG660

International Brand Equivalents by Ambient Temperature
Ambient Temp. Oil Type Esso Texaco Mobil Caparazón AGMA
15–60°C
−9 to −16°C		 Mineral oils Spartan EP220 Regal Oil R&D 320 DTE LIL BB Shell Omala Oil 220 5
Compounded oils Sparan EP320 631-Honor Cylinder Oil Mobil 600W Cylinder Oil Shell Omala Oil 320 7
Extreme pressure Spartan EP460 Meropa 460 Mobil Gears 634 Shell Omala Oil 460 7EP
50–125°C
10–52°C		 Mineral oils Spartan EP320 Regal Oil 320 DTE OIL AA Shell Omala Oil 320 6
Compounded oils Spartan EP460 642-650T Cylinder Oil Mobil 600W Super Cylinder Oil Shell Omala Oil 460 8
Extreme pressure Spartan EP680 Meropa 680 Mobil Gears 636 Shell Omala Oil 660 8EP
ℹ Drain and flush the unit after the first 100 operating hours. Thereafter, change oil every 2,500 hours or 12 months, whichever comes first. Use synthetic oil for continuous 24-hour duty.

08
Diagnóstico de fallas
Troubleshooting Guide — Common Faults and Remedies
Identify the fault symptom, locate the probable cause, and apply the recommended corrective action before returning the unit to service.

Fault Symptom Probable Cause Recommended Action
Overheating Motor, gearbox, or driven machine misaligned at coupling Re-align all three shafts to be co-axial. Check coupling and re-torque fasteners.
Overload running Reduce load to within rated torque. Apply correction factors a₁ and a₂.
Lip seal worn or excessively tight Apply grease at the seal lips; replace seal if worn.
Incorrect oil level or degraded lubricant Top up or drain and refill to the correct level. Use the grade specified in Table 4.
Vibración Motor, gearbox, or driven machine poorly fixed or misaligned Inspect and re-tighten all mounting fasteners. Re-align coupling.
Worm wheel tooth surface worn or damaged Replace the worm wheel assembly.
Bearing worn Replace bearing. Check shaft for scoring before refitting.
Abnormal Noise Bearing worn or clearance too large Replace bearing and adjust preload.
Poor worm wheel tooth mesh Check and adjust tooth contact; replace worm wheel pair if necessary.
Insufficient lubricant Top up oil to the correct level.
Foreign matter in housing Drain oil completely, flush housing, remove debris, refill with fresh oil.
Oil Leakage Lip seal damaged Replace lip seal.
Shaft journal surface worn at seal contact Replace input or output shaft. Fit new seal to match.
Oil overfilled Drain to the correct level per the oil gauge indicator.
Drain plug loose or oil gauge cracked Re-seal and tighten drain plug. Replace oil gauge if cracked.
Rapid Worm Wheel Wear Overload running Reduce load; check application duty factors against rated capacity.
Wrong lubricant grade Drain and refill with the correct grade from Table 4.
Insufficient lubricant Top up to the correct level at the oil gauge.
Oil change interval exceeded; lubricant degraded Drain, flush, and refill per the maintenance schedule.
Operating temperature too high Resolve overheating fault first (see above), then reduce ambient temperature or improve ventilation.

06
Aplicaciones
WPEDO Series — Industry Use Cases

EVER-POWER worm gearbox manufacturing facility Hangzhou — CNC gear hobbing and precision assembly

EVER-POWER Manufacturing
CNC gear hobbing, heat treatment, and 100% pressure-testing in Hangzhou. Every WPEDO unit is inspected and pre-filled before dispatch.
WPEDO worm gear reducer installed in industrial drive application

WPEDO Series in Service
The WPEDO worm gear reducer serves conveyor, mixer, packaging, and agricultural drives across 40–175 mm centre distance.
🡇
IEC-Coupled Very-Slow Vertical Lifting

WPEDO 80–175
IEC + vertical up + high ratio

Lifting columns and vertical actuators requiring very slow output speed, high torque, direct IEC motor coupling, and a vertical upward output shaft from a single compact unit.

🏭
Tower Agitators at Very Low Speed

WPEDO 100–175
Up to 9,066 N·m

Very slow vertical agitator shafts in tall reactors and fermenters where the IEC motor couples directly and the two-stage ratio provides the very slow rotational speed required for high-viscosity mixing.

🔄
Kiln and Drum End Drives

WPEDO 80–135
Very high ratio vertical

Rotary kiln and drying drum drives where the output must be vertical and the reduction ratio is beyond the capability of a single-stage worm unit.

⚙
Slow Vertical Gate Actuators

WPEDO 40–100
IEC direct + vertical

Gate valve and sluice gate actuators requiring an IEC-coupled motor and very slow vertical travel, with the self-locking worm drive holding the gate on power loss.

07
Fabricante
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 — production floor

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, assembly, and 100% pressure-test in Hangzhou.
🔬
HRC 58–62
Worm Shaft Hardness
Case carburising and quenching on every shaft. Ra ≤ 0.8 μm ground finish. Hardness verified by Rockwell test.
📦
MOQ 10 pcs
OEM from Small Batches
Custom ratios, shaft sizes, keyways. Sample 15–25 days; production 30–45 days.
🌎
50+ Countries
Global Export
EU · US · UK · AU · NL · BR · CA · KR. DDP and DAP available.
📋
Triple ISO
Certified Quality
ISO 9001:2015 · ISO 14001 · ISO 45001. CE marking on request.
⚡
24 h
Quote Response
Send size, ratio, quantity, application. Full quote + drawing within 24 hours.

PREGUNTAS FRECUENTES
Frequently Asked Questions — WPEDO Series Double Stage Worm Gearbox
Does the WPEDO need a special oil fill?+
Yes. The O orientation changes the internal oil bath level. EVER-POWER specifies the correct volume at order.
What IEC frames are compatible?+
Contact EVER-POWER with your motor frame and shaft diameter.
Is the WPEDO self-locking?+
Strongly self-locking at all standard ratios.
What is the MOQ and lead time?+
MOQ 10 pcs, 30–45 days. Samples 15–25 days.
Are drawings available?+
2D DXF/PDF within 24 hours.

Request a Quote — WPEDO Series Double Stage Worm Gearbox
Provide your required centre distance (40–175 mm), gear ratio (1:200 – 1:900), shaft direction, mounting type, and quantity. Full quotation with dimensional drawing returned within 24 hours.

MOQ 10 pcs

Sample 15–25 days

Quote in 24 hours

DDP / DAP available

Request a Quote →
Email Us Directly

📞 +65 8866 2737 · Singapore

Reductores

Las capacidades de fabricación de engranajes de clase mundial, los proveedores de materiales de calidad y un proceso de calidad de vanguardia permiten a EPT ofrecer el más alto nivel de precisión, durabilidad y resistencia. El EPT reductores planetarios están diseñados y construidos para aplicaciones avanzadas de alta velocidad de bajo juego. Los procesos de fabricación EPT nos permite ofrecer excepcionales capacidades de carga de choque y diversas opciones de montaje.

Tratamiento de superficies

Recocido, canonización natural, tratamiento térmico, pulido, niquelado, cromado, zincado, pasivado amarillo, pasivado dorado, satinado, pintado en negro, etc.

Método de tratamiento

Mecanizado CNC, punzonado, torneado, fresado, taladrado, rectificado, brochado, soldadura y montaje

Control de calidad y certificado

Autocomprobación de los técnicos en la producción, comprobación final antes del embalaje por un inspector de calidad profesional.
ISO9001:2008 , ISO14001:2001,ISO/TS 16949:2009

Paquete y plazo de entrega

Tamaño Dibujos
Caja/contenedor de madera y palet, o según especificaciones personalizadas.
15-25días muestras. 30-45days pedido offcial
Puerto: puerto de Shanghai/Ningbo

PREGUNTAS FRECUENTES

P: ¿Son ustedes comerciantes o fabricantes?
R: Nuestro grupo está formado por 3 fábricas y 2 empresas de ventas en el extranjero.

P: ¿Proporcionan muestras? ¿Son gratuitas o adicionales?
R: Sí, podríamos ofrecer la muestra de forma gratuita, pero no pagar el costo de la carga.

P: ¿Cuál es el plazo de entrega? Cuáles son sus condiciones de pago?
R: Generalmente es de 40-45 días. El plazo puede variar en función del producto y del nivel de personalización. Para los productos estándar, el pago es: 30% T/T por adelantado, saldo antes del envío.

P: ¿Cuál es el MOQ o precio exacto de su producto?
R: Como empresa OEM, podemos suministrar y adaptar nuestros productos a una amplia gama de necesidades, por lo que el MOQ y el precio pueden variar en gran medida en función del tamaño, el material y otras especificaciones. Póngase en contacto con nosotros con todos los detalles pertinentes para obtener el presupuesto más preciso.

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