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Boston GearHF721-20-B5-H-P23

HF721-20-B5-H-P23

700 Series Bostmount C-Face Quilled Reducer
Item #101793754
  • 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-P23
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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

  • Must be filled to the proper level with the recommended lubricant for your application before operation
Box Length 6 in
Base to Centerline of Input Shaft 4 11/32 in
Bolt Center Length x Bolt Center Width 5 in x 2 7/8 in
Ratio 20:1
Input HP @ RPM 0.86 hp @ 1150 rpm, 1.4 hp @ 1750 rpm
Bolt Centers w/ Std. Base Kit (in) 6 3/8 x 4 11/16
Center Distance 2.0625 in
Reduction Type Single Reduction
Use With 721
Motor HP 1 hp
Bolt Centers w/ Vertical Base Kits (in) 8 3/8 x 4 7/8
HP @ RPM 1 hp @ 1800 rpm
Base to Shaft Center Height w/High Vert. Base Kit 4.88 in
Base to Shaft Center Height w/Low Vert. Base Kit 3.13 in
Output RPM @ 1750 rpm Input 87.5 rpm
Input (Shaft or Bore) Size 5/8 in
Washdown Duty No
Base to Shaft Center Height w/Std. Base Kit 4.81 in
Thermal Input Horsepower @ 1750 RPM N/A
Output Configuration Hollow Output
Frame 56C
Housing Material Cast Iron
Lubrication None
Keyway Size 3/16 x 3/32
Output (Shaft or Bore) Size 1 7/16 in
Max. Overhung Load @ RPM 700 lb/in @ 1150 rpm, 700 lb/in @ 1750 rpm
Fan Cooled No
Bore Code B5
Max. Thrust Load @ 1150 rpm 700 lb/in
Max. Overhung Load @ 1750 rpm 700 lb/in
Box Height 6 3/8 in
Torque Out @ 1750 rpm 892 in lb
Worm Position Universal
Output Torque @ RPM 782 in lb @ 1150 rpm, 892 in lb @ 1750 rpm
Shaft Assembly Code H
Max. Thrust Load @ RPM 700 lb/in @ 1150 rpm, 700 lb/in @ 1750 rpm
Base to Shaft Center Height w/Vert. "J" Base Kit 3.94 in
Input Configuration C-Face Quilled
Frame Size 56C
Base to Centerline of Output Shaft 2 9/32 in
Bolt Centers w/ Vertical "J" Base Kit (in) 8.63 x 2.63
Motor Application General Purpose
Family Name HF
Max. Input HP @ 100 rpm 0.11 hp
Bolt Center 5 in x 2 7/8 in
Output RPM @ Input RPM 88 rpm @ 1750 rpm
Box Width 4 45/64 in
Torque Out @ 1150 rpm 782 in lb
Weight 26.1 LB
EAN or UPC 781711630389
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