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Boston GearBKF721B-40S-B5-J

BKF721B-40S-B5-J

700 Series C-Face Quilled Bost-Kleen Reducer
Item #101871371
  • 2 1/16" Center Distance
  • 40:1 Ratio
  • 56C Frame
  • C-Face Quilled Input
  • Right Output
  • Top Worm Position
  • Mobil SHC634 Synthetic Lubricant
  • Cast Iron, White Epoxy Coating
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Boston GearBKF721B-40S-B5-J
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    Shipment Options
  • 2 1/16" Center Distance
  • 40:1 Ratio
  • 56C Frame
  • C-Face Quilled Input
  • Right Output

features

  • 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
  • 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

compliances

  • 0

caution

  • Must be filled to the proper level with the recommended lubricant for your application before operation
Installed Options High Horizontal Base, Mobil SHC634 Synthetic Lubricant
Washdown Duty Yes
Thermal Input Horsepower @ 1750 RPM N/A
Base to Centerline of Input Shaft 5 1/16 in
Lubrication Mobil SHC634 Synthetic
Shaft Assembly Code J
Max. Overhung Load @ RPM 700 lb/in @ 1150 rpm, 700 lb/in @ 1750 rpm
Box Width 5 3/16 in
Bolt Center 6 3/8 in x 4 11/16 in
Use With 721
Housing Material Cast Iron¦White Epoxy Coating
Max. Input HP @ 100 rpm 0.074 hp
Input (Shaft or Bore) Size 5/8 in
Base to Centerline of Output Shaft 3 in
Base Yes
Torque Out @ 1750 rpm 876 in lb
Output Configuration Right Output
Output RPM @ 1750 rpm Input 43.75 rpm
Motor Application Washdown Duty
Max. Thrust Load @ RPM 700 lb/in @ 1150 rpm, 700 lb/in @ 1750 rpm
Base to Shaft Center Height w/Std. Base Kit 4.81 in
Base to Shaft Center Height w/Vert. "J" Base Kit 3.94 in
Reduction Type Single Reduction
Max. Thrust Load @ 1150 rpm 700 lb/in
Output (Shaft or Bore) Size 1 in
Base to Shaft Center Height w/Low Vert. Base Kit 3.13 in
Worm Position Top
Output Torque @ RPM 785 in lb @ 1150 rpm, 876 in lb @ 1750 rpm
Bolt Centers w/ Vertical "J" Base Kit (in) 8.63 x 2.63
Max. Overhung Load @ 1750 rpm 700 lb/in
Frame Size 56C
Output RPM @ Input RPM 44 rpm @ 1750 rpm
Bolt Centers w/ Std. Base Kit (in) 6 3/8 x 4 11/16
Bolt Center Length x Bolt Center Width 6 3/8 in x 4 11/16 in
Center Distance 2 1/16 in
Frame 56C
Box Length 6 in
Bore Code B5
Family Name F
Ratio 40:1
Torque Out @ 1150 rpm 785 in lb
Box Height 7 3/32 in
Input Configuration C-Face Quilled
Fan Cooled No
Base to Shaft Center Height w/High Vert. Base Kit 4.88 in
Bolt Centers w/ Vertical Base Kits (in) 8 3/8 x 4 7/8
HP @ RPM 0.3333333 hp @ 1200 rpm, 0.5 hp @ 1800 rpm
Input HP @ RPM 0.49 hp @ 1150 rpm, 0.81 hp @ 1750 rpm
Weight 25.0 LB
EAN or UPC 781711573136
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