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Boston GearHF721-20-B5-H-P12

HF721-20-B5-H-P12

700 Series Bostmount C-Face Quilled Reducer
Item #101795354
  • 2 1/16" Center Distance
  • 20:1 Ratio
  • 56C Frame
  • C-Face Quilled Input
  • Hollow Output
  • Universal Worm Position
  • No Lubricant
  • Cast Iron
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Boston GearHF721-20-B5-H-P12
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    Shipment Options
  • 2 1/16" Center Distance
  • 20:1 Ratio
  • 56C Frame
  • C-Face Quilled Input
  • Hollow Output

features

  • Large oil reservoir provides efficient heat dissipation and lubrication for longer life
  • Housing is straddle milled top and bottom for precise alignment
  • Internal baffles ensure positive, leak-free venting
  • Rugged housing fabricated of fine-grained cast iron for maximum strength and greater precision during worm and gear alignment
  • Bronze worm gear is straddle mounted between heavy-duty tapered roller bearings to increase thrust and load capacities on size 713 to 760
  • High strength steel output shaft ensures capacity for high torque
  • Pipe plugs allow easy fill, level and drain in any mounting position
  • Super finished oil seal diameters on both input and output shafts extend seal life

caution

  • Sudden, slam-type stalling should be avoided. Applications of this kind, which are beyond the expected normal performance of pneumatic power motors, will damage the power train due to the dynamic shock loads imposed.
Max. Overhung Load @ RPM 700 lb/in @ 1150 rpm, 700 lb/in @ 1750 rpm
Frame 56C
Base to Shaft Center Height w/Std. Base Kit 4.81 in
Box Height 6 3/8 in
Output Configuration Hollow Output
Max. Thrust Load @ RPM 700 lb/in @ 1150 rpm, 700 lb/in @ 1750 rpm
Bore Code B5
Thermal Input Horsepower @ 1750 RPM N/A
Max. Overhung Load @ 1750 rpm 700 lb/in
Motor Application General Purpose
Family Name HF
Base to Shaft Center Height w/Vert. "J" Base Kit 3.94 in
Bolt Center 5 in x 2 7/8 in
Lubrication None
Keyway Size 3/16 x 3/32
Bolt Centers w/ Vertical Base Kits (in) 8 3/8 x 4 7/8
Base to Centerline of Input Shaft 4 11/32 in
Bolt Centers w/ Std. Base Kit (in) 6 3/8 x 4 11/16
HP @ RPM 1 hp @ 1800 rpm
Bolt Center Length x Bolt Center Width 5 in x 2 7/8 in
Output Torque @ RPM 782 in lb @ 1150 rpm, 892 in lb @ 1750 rpm
Max. Input HP @ 100 rpm 0.11 hp
Housing Material Cast Iron
Input Configuration C-Face Quilled
Torque Out @ 1150 rpm 782 in lb
Output RPM @ 1750 rpm Input 87.5 rpm
Washdown Duty No
Torque Out @ 1750 rpm 892 in lb
Motor HP 1 hp
Shaft Assembly Code H
Max. Thrust Load @ 1150 rpm 700 lb/in
Output RPM @ Input RPM 88 rpm @ 1750 rpm
Input (Shaft or Bore) Size 5/8 in
Ratio 20:1
Base to Centerline of Output Shaft 2 9/32 in
Frame Size 56C
Base to Shaft Center Height w/High Vert. Base Kit 4.88 in
Reduction Type Single Reduction
Use With 721
Center Distance 2.0625 in
Fan Cooled No
Box Width 4 45/64 in
Bolt Centers w/ Vertical "J" Base Kit (in) 8.63 x 2.63
Output (Shaft or Bore) Size 3/4 in
Input HP @ RPM 0.86 hp @ 1150 rpm, 1.4 hp @ 1750 rpm
Base to Shaft Center Height w/Low Vert. Base Kit 3.13 in
Worm Position Universal
Box Length 6 in
Weight 26.1 LB
EAN or UPC 781711630334
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