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Boston GearBKF721B20B7J

BKF721B20B7J

700 Series C-Face Quilled Bost-Kleen Reducer
Item #102817608
  • 2 1/16" Center Distance
  • 20:1 Ratio
  • 140TC or 180C Frame
  • C-Face Quilled Input
  • Right Output
  • Top Worm Position
  • No Lubricant
  • Cast Iron, White Epoxy Coating
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Boston GearBKF721B20B7J
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    Shipment Options
  • 2 1/16" Center Distance
  • 20:1 Ratio
  • 140TC or 180C Frame
  • C-Face Quilled Input
  • Right Output

features

  • 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
  • Washable
  • Corrosion-resistant
  • Durable white epoxy finish
  • Cast iron housing
  • Plated pressure relief valves
  • Double lipped oil seals
  • 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

compliances

  • 0

caution

  • Must be filled to the proper level with the recommended lubricant for your application before operation
Output RPM @ 1750 rpm Input 87.5 rpm
Input (Shaft or Bore) Size 7/8 in
Washdown Duty Yes
Shaft Assembly Code J
Frame Size 140TC, 180C
HP @ RPM 1 hp @ 1800 rpm
Input Configuration C-Face Quilled
Bolt Center Length x Bolt Center Width 6 3/8 in x 4 11/16 in
Frame 140TC, 180C
Output (Shaft or Bore) Size 1 in
Motor Application Washdown Duty
Input HP @ RPM 0.86 hp @ 1150 rpm, 1.4 hp @ 1750 rpm
Output Torque @ RPM 782 in lb @ 1150 rpm, 892 in lb @ 1750 rpm
Thermal Input Horsepower @ 1750 RPM N/A
Family Name F
Installed Options High Horizontal Base
Output Configuration Right Output
Worm Position Top
Housing Material Cast Iron¦White Epoxy Coating
Lubrication None
Max. Overhung Load @ RPM 700 lb/in @ 1150 rpm, 700 lb/in @ 1750 rpm
Torque Out @ 1750 rpm 892 in lb
Bore Code B7
Bolt Center 6 3/8 in x 4 11/16 in
Box Length 6 in
Base to Centerline of Output Shaft 3 in
Center Distance 2 1/16 in
Box Width 5 3/16 in
Base to Centerline of Input Shaft 5 1/16 in
Fan Cooled No
Max. Overhung Load @ 1750 rpm 700 lb/in
Box Height 7 3/32 in
Torque Out @ 1150 rpm 782 in lb
Use With 721
Base Yes
Reduction Type Single Reduction
Output RPM @ Input RPM 88 rpm @ 1750 rpm
Max. Thrust Load @ 1150 rpm 700 lb/in
Ratio 20:1
Max. Thrust Load @ RPM 700 lb/in @ 1150 rpm, 700 lb/in @ 1750 rpm
Weight 34.67 LB
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