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