• Samyang Reducer MAX-21 BWP/VWP Series Helical-Worm Reducer (Sizes 70–500)
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Samyang Reducer MAX-21 BWP/VWP Series Helical-Worm Reducer (Sizes 70–500)

Samyang Reducer MAX-21 BWP/VWP Series Helical-Worm Reducer (Sizes 70–500)

High-ratio reducer with a helical pre-stage ahead of a worm stage, for ratios 1/80 to 1/180.

Key features

  • BWP units have a horizontal housing and VWP units a vertical output shaft; sizes 70 to 500 cover input power from about 0.4 HP to 140 HP at 1800 rpm
  • Ratings for output torque and overhung load are published for 300–1800 rpm input, and several shaft arrangements (A–F) are available

Specifications

Type Helical-worm reducer (helical primary + worm)
Gear ratio 1/80–1/180
Input speed (rpm) 1800
BWP-70 Type: Helical-worm reducer (helical primary + worm) | Mounting: Horizontal B type | Size: 70 | Gear ratio: 1/80–1/180 | Input power @1/80 (HP): 0.82 | Input power @1/180 (HP): 0.42 | Output torque @1/80 (kgf-m): 14.4 | Output O.H.L @1/80 (kgf): 260 | Input speed (rpm): 1800
BWP-80 Type: Helical-worm reducer (helical primary + worm) | Mounting: Horizontal B type | Size: 80 | Gear ratio: 1/80–1/180 | Input power @1/80 (HP): 1.27 | Input power @1/180 (HP): 0.64 | Output torque @1/80 (kgf-m): 22.2 | Output O.H.L @1/80 (kgf): 400 | Input speed (rpm): 1800
BWP-100 Type: Helical-worm reducer (helical primary + worm) | Mounting: Horizontal B type | Size: 100 | Gear ratio: 1/80–1/180 | Input power @1/80 (HP): 2.32 | Input power @1/180 (HP): 1.12 | Output torque @1/80 (kgf-m): 44.5 | Output O.H.L @1/80 (kgf): 397 | Input speed (rpm): 1800
BWP-120 Type: Helical-worm reducer (helical primary + worm) | Mounting: Horizontal B type | Size: 120 | Gear ratio: 1/80–1/180 | Input power @1/80 (HP): 3.45 | Input power @1/180 (HP): 1.8 | Output torque @1/80 (kgf-m): 64.8 | Output O.H.L @1/80 (kgf): 446 | Input speed (rpm): 1800
BWP-135 Type: Helical-worm reducer (helical primary + worm) | Mounting: Horizontal B type | Size: 135 | Gear ratio: 1/80–1/180 | Input power @1/80 (HP): 5.12 | Input power @1/180 (HP): 2.36 | Output torque @1/80 (kgf-m): 104 | Output O.H.L @1/80 (kgf): 707 | Input speed (rpm): 1800
BWP-155 Type: Helical-worm reducer (helical primary + worm) | Mounting: Horizontal B type | Size: 155 | Gear ratio: 1/80–1/180 | Input power @1/80 (HP): 6.71 | Input power @1/180 (HP): 3.42 | Output torque @1/80 (kgf-m): 134 | Output O.H.L @1/80 (kgf): 1500 | Input speed (rpm): 1800
BWP-175 Type: Helical-worm reducer (helical primary + worm) | Mounting: Horizontal B type | Size: 175 | Gear ratio: 1/80–1/180 | Input power @1/80 (HP): 9.58 | Input power @1/180 (HP): 4.76 | Output torque @1/80 (kgf-m): 190 | Output O.H.L @1/80 (kgf): 1800 | Input speed (rpm): 1800
BWP-200 Type: Helical-worm reducer (helical primary + worm) | Mounting: Horizontal B type | Size: 200 | Gear ratio: 1/80–1/180 | Input power @1/80 (HP): 13.2 | Input power @1/180 (HP): 6.54 | Output torque @1/80 (kgf-m): 274 | Output O.H.L @1/80 (kgf): 2200 | Input speed (rpm): 1800
BWP-225 Type: Helical-worm reducer (helical primary + worm) | Mounting: Horizontal B type | Size: 225 | Gear ratio: 1/80–1/180 | Input power @1/80 (HP): 18.8 | Input power @1/180 (HP): 8.95 | Output torque @1/80 (kgf-m): 399 | Output O.H.L @1/80 (kgf): 2500 | Input speed (rpm): 1800
BWP-250 Type: Helical-worm reducer (helical primary + worm) | Mounting: Horizontal B type | Size: 250 | Gear ratio: 1/80–1/180 | Input power @1/80 (HP): 24.4 | Input power @1/180 (HP): 11.2 | Output torque @1/80 (kgf-m): 537 | Output O.H.L @1/80 (kgf): 2700 | Input speed (rpm): 1800
BWP-300 Type: Helical-worm reducer (helical primary + worm) | Mounting: Horizontal B type | Size: 300 | Gear ratio: 1/80–1/180 | Input power @1/80 (HP): 37.2 | Input power @1/180 (HP): 17.6 | Output torque @1/80 (kgf-m): 853 | Output O.H.L @1/80 (kgf): 3800 | Input speed (rpm): 1800
BWP-350 Type: Helical-worm reducer (helical primary + worm) | Mounting: Horizontal B type | Size: 350 | Gear ratio: 1/80–1/180 | Input power @1/80 (HP): 55.8 | Input power @1/180 (HP): 26.5 | Output torque @1/80 (kgf-m): 1289 | Output O.H.L @1/80 (kgf): 5100 | Input speed (rpm): 1800
BWP-400 Type: Helical-worm reducer (helical primary + worm) | Mounting: Horizontal B type | Size: 400 | Gear ratio: 1/80–1/180 | Input power @1/80 (HP): 76.4 | Input power @1/180 (HP): 38.1 | Output torque @1/80 (kgf-m): 1843 | Output O.H.L @1/80 (kgf): 7000 | Input speed (rpm): 1800
BWP-450 Type: Helical-worm reducer (helical primary + worm) | Mounting: Horizontal B type | Size: 450 | Gear ratio: 1/80–1/180 | Input power @1/80 (HP): 106 | Input power @1/180 (HP): 50.9 | Output torque @1/80 (kgf-m): 2466 | Output O.H.L @1/80 (kgf): 9020 | Input speed (rpm): 1800
BWP-500 Type: Helical-worm reducer (helical primary + worm) | Mounting: Horizontal B type | Size: 500 | Gear ratio: 1/80–1/180 | Input power @1/80 (HP): 141.2 | Input power @1/180 (HP): 66.5 | Output torque @1/80 (kgf-m): 3370 | Output O.H.L @1/80 (kgf): 13000 | Input speed (rpm): 1800
VWP-70 Type: Helical-worm reducer (helical primary + worm) | Mounting: Vertical type | Size: 70 | Gear ratio: 1/80–1/180 | Input power @1/80 (HP): 0.82 | Input power @1/180 (HP): 0.42 | Output torque @1/80 (kgf-m): 14.4 | Output O.H.L @1/80 (kgf): 260 | Input speed (rpm): 1800
VWP-80 Type: Helical-worm reducer (helical primary + worm) | Mounting: Vertical type | Size: 80 | Gear ratio: 1/80–1/180 | Input power @1/80 (HP): 1.27 | Input power @1/180 (HP): 0.64 | Output torque @1/80 (kgf-m): 22.2 | Output O.H.L @1/80 (kgf): 400 | Input speed (rpm): 1800
VWP-100 Type: Helical-worm reducer (helical primary + worm) | Mounting: Vertical type | Size: 100 | Gear ratio: 1/80–1/180 | Input power @1/80 (HP): 2.32 | Input power @1/180 (HP): 1.12 | Output torque @1/80 (kgf-m): 44.5 | Output O.H.L @1/80 (kgf): 397 | Input speed (rpm): 1800
VWP-120 Type: Helical-worm reducer (helical primary + worm) | Mounting: Vertical type | Size: 120 | Gear ratio: 1/80–1/180 | Input power @1/80 (HP): 3.45 | Input power @1/180 (HP): 1.8 | Output torque @1/80 (kgf-m): 64.8 | Output O.H.L @1/80 (kgf): 446 | Input speed (rpm): 1800
VWP-135 Type: Helical-worm reducer (helical primary + worm) | Mounting: Vertical type | Size: 135 | Gear ratio: 1/80–1/180 | Input power @1/80 (HP): 5.12 | Input power @1/180 (HP): 2.36 | Output torque @1/80 (kgf-m): 104 | Output O.H.L @1/80 (kgf): 707 | Input speed (rpm): 1800
VWP-155 Type: Helical-worm reducer (helical primary + worm) | Mounting: Vertical type | Size: 155 | Gear ratio: 1/80–1/180 | Input power @1/80 (HP): 6.71 | Input power @1/180 (HP): 3.42 | Output torque @1/80 (kgf-m): 134 | Output O.H.L @1/80 (kgf): 1500 | Input speed (rpm): 1800
VWP-175 Type: Helical-worm reducer (helical primary + worm) | Mounting: Vertical type | Size: 175 | Gear ratio: 1/80–1/180 | Input power @1/80 (HP): 9.58 | Input power @1/180 (HP): 4.76 | Output torque @1/80 (kgf-m): 190 | Output O.H.L @1/80 (kgf): 1800 | Input speed (rpm): 1800
VWP-200 Type: Helical-worm reducer (helical primary + worm) | Mounting: Vertical type | Size: 200 | Gear ratio: 1/80–1/180 | Input power @1/80 (HP): 13.2 | Input power @1/180 (HP): 6.54 | Output torque @1/80 (kgf-m): 274 | Output O.H.L @1/80 (kgf): 2200 | Input speed (rpm): 1800
VWP-225 Type: Helical-worm reducer (helical primary + worm) | Mounting: Vertical type | Size: 225 | Gear ratio: 1/80–1/180 | Input power @1/80 (HP): 18.8 | Input power @1/180 (HP): 8.95 | Output torque @1/80 (kgf-m): 399 | Output O.H.L @1/80 (kgf): 2500 | Input speed (rpm): 1800
VWP-250 Type: Helical-worm reducer (helical primary + worm) | Mounting: Vertical type | Size: 250 | Gear ratio: 1/80–1/180 | Input power @1/80 (HP): 24.4 | Input power @1/180 (HP): 11.2 | Output torque @1/80 (kgf-m): 537 | Output O.H.L @1/80 (kgf): 2700 | Input speed (rpm): 1800
VWP-300 Type: Helical-worm reducer (helical primary + worm) | Mounting: Vertical type | Size: 300 | Gear ratio: 1/80–1/180 | Input power @1/80 (HP): 37.2 | Input power @1/180 (HP): 17.6 | Output torque @1/80 (kgf-m): 853 | Output O.H.L @1/80 (kgf): 3800 | Input speed (rpm): 1800
VWP-350 Type: Helical-worm reducer (helical primary + worm) | Mounting: Vertical type | Size: 350 | Gear ratio: 1/80–1/180 | Input power @1/80 (HP): 55.8 | Input power @1/180 (HP): 26.5 | Output torque @1/80 (kgf-m): 1289 | Output O.H.L @1/80 (kgf): 5100 | Input speed (rpm): 1800
VWP-400 Type: Helical-worm reducer (helical primary + worm) | Mounting: Vertical type | Size: 400 | Gear ratio: 1/80–1/180 | Input power @1/80 (HP): 76.4 | Input power @1/180 (HP): 38.1 | Output torque @1/80 (kgf-m): 1843 | Output O.H.L @1/80 (kgf): 7000 | Input speed (rpm): 1800
VWP-450 Type: Helical-worm reducer (helical primary + worm) | Mounting: Vertical type | Size: 450 | Gear ratio: 1/80–1/180 | Input power @1/80 (HP): 106 | Input power @1/180 (HP): 50.9 | Output torque @1/80 (kgf-m): 2466 | Output O.H.L @1/80 (kgf): 9020 | Input speed (rpm): 1800
VWP-500 Type: Helical-worm reducer (helical primary + worm) | Mounting: Vertical type | Size: 500 | Gear ratio: 1/80–1/180 | Input power @1/80 (HP): 141.2 | Input power @1/180 (HP): 66.5 | Output torque @1/80 (kgf-m): 3370 | Output O.H.L @1/80 (kgf): 13000 | Input speed (rpm): 1800
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Samyang Reducer MAX-21 BWP/VWP Series Helical-Worm Reducer (Sizes 70–500)

Brand Samyang Reducer·Worm Reducers

Available part numbers (30)

BWP-70, BWP-80, BWP-100, BWP-120, BWP-135, BWP-155, BWP-175, BWP-200, BWP-225, BWP-250 + 20 more — see full table ↓

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BWP-70Type: Helical-worm reducer (helical primary + worm) | Mounting: Horizontal B type | Size: 70 | Gear ratio: 1/80–1/180 | Input power @1/80 (HP): 0.82 | Input power @1/180 (HP): 0.42 | Output torque @1/80 (kgf-m): 14.4 | Output O.H.L @1/80 (kgf): 260 | Input speed (rpm): 1800
BWP-80Type: Helical-worm reducer (helical primary + worm) | Mounting: Horizontal B type | Size: 80 | Gear ratio: 1/80–1/180 | Input power @1/80 (HP): 1.27 | Input power @1/180 (HP): 0.64 | Output torque @1/80 (kgf-m): 22.2 | Output O.H.L @1/80 (kgf): 400 | Input speed (rpm): 1800
BWP-100Type: Helical-worm reducer (helical primary + worm) | Mounting: Horizontal B type | Size: 100 | Gear ratio: 1/80–1/180 | Input power @1/80 (HP): 2.32 | Input power @1/180 (HP): 1.12 | Output torque @1/80 (kgf-m): 44.5 | Output O.H.L @1/80 (kgf): 397 | Input speed (rpm): 1800
BWP-120Type: Helical-worm reducer (helical primary + worm) | Mounting: Horizontal B type | Size: 120 | Gear ratio: 1/80–1/180 | Input power @1/80 (HP): 3.45 | Input power @1/180 (HP): 1.8 | Output torque @1/80 (kgf-m): 64.8 | Output O.H.L @1/80 (kgf): 446 | Input speed (rpm): 1800
BWP-135Type: Helical-worm reducer (helical primary + worm) | Mounting: Horizontal B type | Size: 135 | Gear ratio: 1/80–1/180 | Input power @1/80 (HP): 5.12 | Input power @1/180 (HP): 2.36 | Output torque @1/80 (kgf-m): 104 | Output O.H.L @1/80 (kgf): 707 | Input speed (rpm): 1800
BWP-155Type: Helical-worm reducer (helical primary + worm) | Mounting: Horizontal B type | Size: 155 | Gear ratio: 1/80–1/180 | Input power @1/80 (HP): 6.71 | Input power @1/180 (HP): 3.42 | Output torque @1/80 (kgf-m): 134 | Output O.H.L @1/80 (kgf): 1500 | Input speed (rpm): 1800
BWP-175Type: Helical-worm reducer (helical primary + worm) | Mounting: Horizontal B type | Size: 175 | Gear ratio: 1/80–1/180 | Input power @1/80 (HP): 9.58 | Input power @1/180 (HP): 4.76 | Output torque @1/80 (kgf-m): 190 | Output O.H.L @1/80 (kgf): 1800 | Input speed (rpm): 1800
BWP-200Type: Helical-worm reducer (helical primary + worm) | Mounting: Horizontal B type | Size: 200 | Gear ratio: 1/80–1/180 | Input power @1/80 (HP): 13.2 | Input power @1/180 (HP): 6.54 | Output torque @1/80 (kgf-m): 274 | Output O.H.L @1/80 (kgf): 2200 | Input speed (rpm): 1800
BWP-225Type: Helical-worm reducer (helical primary + worm) | Mounting: Horizontal B type | Size: 225 | Gear ratio: 1/80–1/180 | Input power @1/80 (HP): 18.8 | Input power @1/180 (HP): 8.95 | Output torque @1/80 (kgf-m): 399 | Output O.H.L @1/80 (kgf): 2500 | Input speed (rpm): 1800
BWP-250Type: Helical-worm reducer (helical primary + worm) | Mounting: Horizontal B type | Size: 250 | Gear ratio: 1/80–1/180 | Input power @1/80 (HP): 24.4 | Input power @1/180 (HP): 11.2 | Output torque @1/80 (kgf-m): 537 | Output O.H.L @1/80 (kgf): 2700 | Input speed (rpm): 1800
BWP-300Type: Helical-worm reducer (helical primary + worm) | Mounting: Horizontal B type | Size: 300 | Gear ratio: 1/80–1/180 | Input power @1/80 (HP): 37.2 | Input power @1/180 (HP): 17.6 | Output torque @1/80 (kgf-m): 853 | Output O.H.L @1/80 (kgf): 3800 | Input speed (rpm): 1800
BWP-350Type: Helical-worm reducer (helical primary + worm) | Mounting: Horizontal B type | Size: 350 | Gear ratio: 1/80–1/180 | Input power @1/80 (HP): 55.8 | Input power @1/180 (HP): 26.5 | Output torque @1/80 (kgf-m): 1289 | Output O.H.L @1/80 (kgf): 5100 | Input speed (rpm): 1800
BWP-400Type: Helical-worm reducer (helical primary + worm) | Mounting: Horizontal B type | Size: 400 | Gear ratio: 1/80–1/180 | Input power @1/80 (HP): 76.4 | Input power @1/180 (HP): 38.1 | Output torque @1/80 (kgf-m): 1843 | Output O.H.L @1/80 (kgf): 7000 | Input speed (rpm): 1800
BWP-450Type: Helical-worm reducer (helical primary + worm) | Mounting: Horizontal B type | Size: 450 | Gear ratio: 1/80–1/180 | Input power @1/80 (HP): 106 | Input power @1/180 (HP): 50.9 | Output torque @1/80 (kgf-m): 2466 | Output O.H.L @1/80 (kgf): 9020 | Input speed (rpm): 1800
BWP-500Type: Helical-worm reducer (helical primary + worm) | Mounting: Horizontal B type | Size: 500 | Gear ratio: 1/80–1/180 | Input power @1/80 (HP): 141.2 | Input power @1/180 (HP): 66.5 | Output torque @1/80 (kgf-m): 3370 | Output O.H.L @1/80 (kgf): 13000 | Input speed (rpm): 1800
VWP-70Type: Helical-worm reducer (helical primary + worm) | Mounting: Vertical type | Size: 70 | Gear ratio: 1/80–1/180 | Input power @1/80 (HP): 0.82 | Input power @1/180 (HP): 0.42 | Output torque @1/80 (kgf-m): 14.4 | Output O.H.L @1/80 (kgf): 260 | Input speed (rpm): 1800
VWP-80Type: Helical-worm reducer (helical primary + worm) | Mounting: Vertical type | Size: 80 | Gear ratio: 1/80–1/180 | Input power @1/80 (HP): 1.27 | Input power @1/180 (HP): 0.64 | Output torque @1/80 (kgf-m): 22.2 | Output O.H.L @1/80 (kgf): 400 | Input speed (rpm): 1800
VWP-100Type: Helical-worm reducer (helical primary + worm) | Mounting: Vertical type | Size: 100 | Gear ratio: 1/80–1/180 | Input power @1/80 (HP): 2.32 | Input power @1/180 (HP): 1.12 | Output torque @1/80 (kgf-m): 44.5 | Output O.H.L @1/80 (kgf): 397 | Input speed (rpm): 1800
VWP-120Type: Helical-worm reducer (helical primary + worm) | Mounting: Vertical type | Size: 120 | Gear ratio: 1/80–1/180 | Input power @1/80 (HP): 3.45 | Input power @1/180 (HP): 1.8 | Output torque @1/80 (kgf-m): 64.8 | Output O.H.L @1/80 (kgf): 446 | Input speed (rpm): 1800
VWP-135Type: Helical-worm reducer (helical primary + worm) | Mounting: Vertical type | Size: 135 | Gear ratio: 1/80–1/180 | Input power @1/80 (HP): 5.12 | Input power @1/180 (HP): 2.36 | Output torque @1/80 (kgf-m): 104 | Output O.H.L @1/80 (kgf): 707 | Input speed (rpm): 1800
VWP-155Type: Helical-worm reducer (helical primary + worm) | Mounting: Vertical type | Size: 155 | Gear ratio: 1/80–1/180 | Input power @1/80 (HP): 6.71 | Input power @1/180 (HP): 3.42 | Output torque @1/80 (kgf-m): 134 | Output O.H.L @1/80 (kgf): 1500 | Input speed (rpm): 1800
VWP-175Type: Helical-worm reducer (helical primary + worm) | Mounting: Vertical type | Size: 175 | Gear ratio: 1/80–1/180 | Input power @1/80 (HP): 9.58 | Input power @1/180 (HP): 4.76 | Output torque @1/80 (kgf-m): 190 | Output O.H.L @1/80 (kgf): 1800 | Input speed (rpm): 1800
VWP-200Type: Helical-worm reducer (helical primary + worm) | Mounting: Vertical type | Size: 200 | Gear ratio: 1/80–1/180 | Input power @1/80 (HP): 13.2 | Input power @1/180 (HP): 6.54 | Output torque @1/80 (kgf-m): 274 | Output O.H.L @1/80 (kgf): 2200 | Input speed (rpm): 1800
VWP-225Type: Helical-worm reducer (helical primary + worm) | Mounting: Vertical type | Size: 225 | Gear ratio: 1/80–1/180 | Input power @1/80 (HP): 18.8 | Input power @1/180 (HP): 8.95 | Output torque @1/80 (kgf-m): 399 | Output O.H.L @1/80 (kgf): 2500 | Input speed (rpm): 1800
VWP-250Type: Helical-worm reducer (helical primary + worm) | Mounting: Vertical type | Size: 250 | Gear ratio: 1/80–1/180 | Input power @1/80 (HP): 24.4 | Input power @1/180 (HP): 11.2 | Output torque @1/80 (kgf-m): 537 | Output O.H.L @1/80 (kgf): 2700 | Input speed (rpm): 1800
VWP-300Type: Helical-worm reducer (helical primary + worm) | Mounting: Vertical type | Size: 300 | Gear ratio: 1/80–1/180 | Input power @1/80 (HP): 37.2 | Input power @1/180 (HP): 17.6 | Output torque @1/80 (kgf-m): 853 | Output O.H.L @1/80 (kgf): 3800 | Input speed (rpm): 1800
VWP-350Type: Helical-worm reducer (helical primary + worm) | Mounting: Vertical type | Size: 350 | Gear ratio: 1/80–1/180 | Input power @1/80 (HP): 55.8 | Input power @1/180 (HP): 26.5 | Output torque @1/80 (kgf-m): 1289 | Output O.H.L @1/80 (kgf): 5100 | Input speed (rpm): 1800
VWP-400Type: Helical-worm reducer (helical primary + worm) | Mounting: Vertical type | Size: 400 | Gear ratio: 1/80–1/180 | Input power @1/80 (HP): 76.4 | Input power @1/180 (HP): 38.1 | Output torque @1/80 (kgf-m): 1843 | Output O.H.L @1/80 (kgf): 7000 | Input speed (rpm): 1800
VWP-450Type: Helical-worm reducer (helical primary + worm) | Mounting: Vertical type | Size: 450 | Gear ratio: 1/80–1/180 | Input power @1/80 (HP): 106 | Input power @1/180 (HP): 50.9 | Output torque @1/80 (kgf-m): 2466 | Output O.H.L @1/80 (kgf): 9020 | Input speed (rpm): 1800
VWP-500Type: Helical-worm reducer (helical primary + worm) | Mounting: Vertical type | Size: 500 | Gear ratio: 1/80–1/180 | Input power @1/80 (HP): 141.2 | Input power @1/180 (HP): 66.5 | Output torque @1/80 (kgf-m): 3370 | Output O.H.L @1/80 (kgf): 13000 | Input speed (rpm): 1800

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