Products Power Transmission Products

  • Worm Reducer (Worm Power Drive® & Troi Drive)

SW/SWM Series

Uses a dedicated case for on-shaft and flange mounting with the same well-balanced worm as the EW Series, contributing to equipment simplification.

In addition to a selection between solid and hollow output shafts, Power-Lock and taper bush shafts are available, saving you manpower and time for assembly.

SW/SWM Series

1.Features

  • Excellent balance between capacity, efficiency and cost
  • On-shaft and flange mounting style for more simplified equipment design
  • Selection ranging from small size to medium size (center distance: 80mm to 200mm)

2.Structure (SW80-200)

Structure (SW80-200)
  • (1) Case
  • (2) Worm shaft
  • (3) Output Shaft with Worm Wheel
  • (5) Input Shaft Bearing A
  • (6) Input Shaft Bearing B
  • (7) Output Shaft Bearing
  • (8) Input Shaft Oil Seal
  • (9) Output Shaft Oil Seal
  • (12) Hex Cap Bolt

*The above diagram is a typical example

  • (13) Socket Head Plug
  • (14) Square Parallel Key
  • (21) Filter Set
  • (26) Hex Cap Bolt
  • (27) Output Bearing Support 1
  • (29) Shim 1
  • (30) Shim 2
  • (31) Pressure Vent
  • (32) Oil Gauge
  • (33) Input Cap
  • (34) Input Seal Support

3.Reference Number System & Options (Single Reduction)

With motors

SW 100 B 40 LF
(1) (2) (3) (4)

With high efficiency motors

SWMR 100 V 60 SRF 220 B V
(1) (2) (3) * Shaft arrangements (4) (5) * Options
(1) Size
SW: 80, 100, 125, 150, 175, 200
SWM: 80, 100, 125, 150
(2) Mounting Position
T: T Type, B: B Type, V: V Type
(3) Reduction Ratio
10: 1/10, 15: 1/15, 20: 1/20, 25: 1/25, 30: 1/30,
40: 1/40, 50: 1/50, 60: 1/60
(4) Motor Capacity (Three-Phase)
010: 0.1kW, 020: 0.2kW, 040: 0.4kW, 075: 0.75kW,
150: 1.5kW, 220: 2.2kW, 370: 3.7kW, 550: 5.5kW
(5) Motor Installation
Blank: Ship with efficiency motor installed (0.75kW to 5.5kW) ex. "075V"
B: Ship with efficiency motor with brake installed (0.75kW to 5.5kW)
S: Ship with standard motor mounted
SB: Ship with standard motor with brake mounted
SX: Ship with customer-supplied motor mounted
Y: Customer to mount motor
  • Please put "-" (hyphen) before the reducer option code.
  • Please indicate the motor option code following the motor specifications "S"and "SB"

4.Reference Number System & Options (High Reduction)

With motors

SW 100 B 1200 R-LF - K
(1) (2) (3) (4) * Options

With motors

SWM 100 V 1500 L-RF 020 SB V
(1) (2) (3) * Shaft arrangements (4) (5) * Options

With high efficiency motors

SWMR 150 B 300 L-RF 370   
(1) (2) (3) * Shaft arrangements (4) (5)
(1) Size
80, 100, 125, 150, 175, 200
(2) Mounting Position
B: B Type, V: V Type
(3) Reduction Ratio
100: 1/100, 150: 1/150, 200: 1/200, 250: 1/250,
300: 1/300, 400: 1/400,500: 1/500, 600: 1/600,
800: 1/800, 1000: 1/1000, 1200: 1/1200,
1500: 1/1500, 1800: 1/1800, 2400: 1/2400,
3000: 1/3000, 3600: 1/3600
(4) Motor Capacity (Three-Phase)
010: 0.1kW, 020: 0.2kW, 040: 0.4kW, 075: 0.75kW,
150: 1.5kW, 220: 2.2kW, 370: 3.7kW, 550: 5.5kW
(5) Motor Installation
Blank: Ship with efficiency motor installed (0.75kW to 5.5kW) ex. "075V"
B: Ship with efficiency motor with brake installed (0.75kW to 5.5kW)
S: Ship with standard motor mounted
SB: Ship with standard motor with brake mounted
SX: Ship with customer-supplied motor mounted
Y: Customer to mount motor
  • Please put "-" (hyphen) before the reducer option code.
  • Please indicate the motor option code following the motor specifications "S"and "SB"

5.Product Specifications

Series SW/SWM Series
Worm Gear Type Cylindrical Worm
Size Small Size to Mid Size
Center Distance: 80mm to 200mm
Reduction Ratio Single Reduction 1/10 to 1/60
High Reduction 1/100 to 1/3600
Torque 300 to 5300N·m