• SPG KSH Unit Silk-Hat Input Shaft Strain Wave Units (Size 14-32)
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SPG KSH Unit Silk-Hat Input Shaft Strain Wave Units (Size 14-32)

SPG KSH Unit Silk-Hat Input Shaft Strain Wave Units (Size 14-32)

SPG KSH series unit silk-hat input shaft strain wave gear reducer, housed unit with solid input shaft, in sizes 14-32 with reduction ratios 1/50 to 1/120.

Key features

  • Housed unit with solid input shaft for easy coupling to motors, pulleys or gears
  • Built-in cross roller bearing for high moment load capacity
  • Zero backlash with high positioning and rotational accuracy
  • High torque capacity and high torsional stiffness
  • Sizes 14, 17, 20, 25, 32; ratios 50, 80, 100, 120 (size 14: 50-100)
  • Rated torque 5.5-137 Nm at 2,000 rpm input

Specifications

Model form KSF-<size>-<ratio>-UJ
Reducer principle Strain wave gear (flexspline / circular spline / wave generator)
Backlash Zero backlash
Max. input speed (oil) 14,000 / 10,000 / 10,000 / 7,500 / 7,000 rpm (size 14/17/20/25/32)
Max. input speed (grease) 8,500 / 7,300 / 6,500 / 5,600 / 4,800 rpm (size 14/17/20/25/32)
Avg. input speed (grease) 3,500 rpm
Transmission accuracy 1.5 arcmin (size 14-17), 1 arcmin (size 20-32)
Inertia (x10^-4 kgm2) 0.025 / 0.059 / 0.137 / 0.32 / 1.2 (size 14-32)
Source SPG KSH Precision Reducer catalog, p. 5, 21-23
KSF-14-050-UJ Size: 14 | Ratio: 1/50 | Rated torque: 5.5 Nm | Start/stop torque: 18 Nm | Momentary max torque: 35 Nm | Weight: 0.66 kg
KSF-14-080-UJ Size: 14 | Ratio: 1/80 | Rated torque: 8 Nm | Start/stop torque: 23 Nm | Momentary max torque: 47 Nm | Weight: 0.66 kg
KSF-14-100-UJ Size: 14 | Ratio: 1/100 | Rated torque: 8 Nm | Start/stop torque: 28 Nm | Momentary max torque: 54 Nm | Weight: 0.66 kg
KSF-17-050-UJ Size: 17 | Ratio: 1/50 | Rated torque: 16 Nm | Start/stop torque: 34 Nm | Momentary max torque: 70 Nm | Weight: 0.94 kg
KSF-17-080-UJ Size: 17 | Ratio: 1/80 | Rated torque: 22 Nm | Start/stop torque: 43 Nm | Momentary max torque: 87 Nm | Weight: 0.94 kg
KSF-17-100-UJ Size: 17 | Ratio: 1/100 | Rated torque: 24 Nm | Start/stop torque: 54 Nm | Momentary max torque: 110 Nm | Weight: 0.94 kg
KSF-17-120-UJ Size: 17 | Ratio: 1/120 | Rated torque: 24 Nm | Start/stop torque: 54 Nm | Momentary max torque: 86 Nm | Weight: 0.94 kg
KSF-20-050-UJ Size: 20 | Ratio: 1/50 | Rated torque: 25 Nm | Start/stop torque: 56 Nm | Momentary max torque: 98 Nm | Weight: 1.38 kg
KSF-20-080-UJ Size: 20 | Ratio: 1/80 | Rated torque: 34 Nm | Start/stop torque: 74 Nm | Momentary max torque: 127 Nm | Weight: 1.38 kg
KSF-20-100-UJ Size: 20 | Ratio: 1/100 | Rated torque: 40 Nm | Start/stop torque: 82 Nm | Momentary max torque: 147 Nm | Weight: 1.38 kg
KSF-20-120-UJ Size: 20 | Ratio: 1/120 | Rated torque: 40 Nm | Start/stop torque: 87 Nm | Momentary max torque: 147 Nm | Weight: 1.38 kg
KSF-25-050-UJ Size: 25 | Ratio: 1/50 | Rated torque: 39 Nm | Start/stop torque: 98 Nm | Momentary max torque: 186 Nm | Weight: 2.1 kg
KSF-25-080-UJ Size: 25 | Ratio: 1/80 | Rated torque: 63 Nm | Start/stop torque: 137 Nm | Momentary max torque: 255 Nm | Weight: 2.1 kg
KSF-25-100-UJ Size: 25 | Ratio: 1/100 | Rated torque: 67 Nm | Start/stop torque: 157 Nm | Momentary max torque: 284 Nm | Weight: 2.1 kg
KSF-25-120-UJ Size: 25 | Ratio: 1/120 | Rated torque: 67 Nm | Start/stop torque: 167 Nm | Momentary max torque: 304 Nm | Weight: 2.1 kg
KSF-32-050-UJ Size: 32 | Ratio: 1/50 | Rated torque: 76 Nm | Start/stop torque: 216 Nm | Momentary max torque: 382 Nm | Weight: 4.4 kg
KSF-32-080-UJ Size: 32 | Ratio: 1/80 | Rated torque: 118 Nm | Start/stop torque: 304 Nm | Momentary max torque: 568 Nm | Weight: 4.4 kg
KSF-32-100-UJ Size: 32 | Ratio: 1/100 | Rated torque: 137 Nm | Start/stop torque: 333 Nm | Momentary max torque: 647 Nm | Weight: 4.4 kg
KSF-32-120-UJ Size: 32 | Ratio: 1/120 | Rated torque: 137 Nm | Start/stop torque: 353 Nm | Momentary max torque: 686 Nm | Weight: 4.4 kg
Strain Wave Gear ReducersSPG
19 product codes available in this family
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SPG KSH Unit Silk-Hat Input Shaft Strain Wave Units (Size 14-32)

Brand SPG·Strain Wave Gear Reducers

Available part numbers (19)

KSF-14-050-UJ, KSF-14-080-UJ, KSF-14-100-UJ, KSF-17-050-UJ, KSF-17-080-UJ, KSF-17-100-UJ, KSF-17-120-UJ, KSF-20-050-UJ, KSF-20-080-UJ, KSF-20-100-UJ + 9 more — see full table ↓

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Product codeSpec
KSF-14-050-UJSize: 14 | Ratio: 1/50 | Rated torque: 5.5 Nm | Start/stop torque: 18 Nm | Momentary max torque: 35 Nm | Weight: 0.66 kg
KSF-14-080-UJSize: 14 | Ratio: 1/80 | Rated torque: 8 Nm | Start/stop torque: 23 Nm | Momentary max torque: 47 Nm | Weight: 0.66 kg
KSF-14-100-UJSize: 14 | Ratio: 1/100 | Rated torque: 8 Nm | Start/stop torque: 28 Nm | Momentary max torque: 54 Nm | Weight: 0.66 kg
KSF-17-050-UJSize: 17 | Ratio: 1/50 | Rated torque: 16 Nm | Start/stop torque: 34 Nm | Momentary max torque: 70 Nm | Weight: 0.94 kg
KSF-17-080-UJSize: 17 | Ratio: 1/80 | Rated torque: 22 Nm | Start/stop torque: 43 Nm | Momentary max torque: 87 Nm | Weight: 0.94 kg
KSF-17-100-UJSize: 17 | Ratio: 1/100 | Rated torque: 24 Nm | Start/stop torque: 54 Nm | Momentary max torque: 110 Nm | Weight: 0.94 kg
KSF-17-120-UJSize: 17 | Ratio: 1/120 | Rated torque: 24 Nm | Start/stop torque: 54 Nm | Momentary max torque: 86 Nm | Weight: 0.94 kg
KSF-20-050-UJSize: 20 | Ratio: 1/50 | Rated torque: 25 Nm | Start/stop torque: 56 Nm | Momentary max torque: 98 Nm | Weight: 1.38 kg
KSF-20-080-UJSize: 20 | Ratio: 1/80 | Rated torque: 34 Nm | Start/stop torque: 74 Nm | Momentary max torque: 127 Nm | Weight: 1.38 kg
KSF-20-100-UJSize: 20 | Ratio: 1/100 | Rated torque: 40 Nm | Start/stop torque: 82 Nm | Momentary max torque: 147 Nm | Weight: 1.38 kg
KSF-20-120-UJSize: 20 | Ratio: 1/120 | Rated torque: 40 Nm | Start/stop torque: 87 Nm | Momentary max torque: 147 Nm | Weight: 1.38 kg
KSF-25-050-UJSize: 25 | Ratio: 1/50 | Rated torque: 39 Nm | Start/stop torque: 98 Nm | Momentary max torque: 186 Nm | Weight: 2.1 kg
KSF-25-080-UJSize: 25 | Ratio: 1/80 | Rated torque: 63 Nm | Start/stop torque: 137 Nm | Momentary max torque: 255 Nm | Weight: 2.1 kg
KSF-25-100-UJSize: 25 | Ratio: 1/100 | Rated torque: 67 Nm | Start/stop torque: 157 Nm | Momentary max torque: 284 Nm | Weight: 2.1 kg
KSF-25-120-UJSize: 25 | Ratio: 1/120 | Rated torque: 67 Nm | Start/stop torque: 167 Nm | Momentary max torque: 304 Nm | Weight: 2.1 kg
KSF-32-050-UJSize: 32 | Ratio: 1/50 | Rated torque: 76 Nm | Start/stop torque: 216 Nm | Momentary max torque: 382 Nm | Weight: 4.4 kg
KSF-32-080-UJSize: 32 | Ratio: 1/80 | Rated torque: 118 Nm | Start/stop torque: 304 Nm | Momentary max torque: 568 Nm | Weight: 4.4 kg
KSF-32-100-UJSize: 32 | Ratio: 1/100 | Rated torque: 137 Nm | Start/stop torque: 333 Nm | Momentary max torque: 647 Nm | Weight: 4.4 kg
KSF-32-120-UJSize: 32 | Ratio: 1/120 | Rated torque: 137 Nm | Start/stop torque: 353 Nm | Momentary max torque: 686 Nm | Weight: 4.4 kg

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