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Boston GearRF721-40-B5-H

RF721-40-B5-H

700 Series C-Face Coupled Reducer
Item #101854846
  • 2 1/16" Center Distance
  • 40:1 Ratio
  • 56C Frame
  • C-Face Coupled Input
  • Left & Right Output
  • Universal Worm Position
  • No Lubricant
  • Cast Iron
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Boston GearRF721-40-B5-H
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    Shipment Options
  • 2 1/16" Center Distance
  • 40:1 Ratio
  • 56C Frame
  • C-Face Coupled Input
  • Left & Right 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
Reduction Type Single Reduction
Family Name RF
Center Distance 2.0625 in
Housing Material Cast Iron
Max. Input HP @ 100 rpm 0.074 hp
Motor HP 0.5 hp
Max. Overhung Load @ RPM 700 lb/in @ 1150 rpm, 700 lb/in @ 1750 rpm
Base to Centerline of Output Shaft 2 9/32 in
Base to Centerline of Input Shaft 4 11/32 in
Fan Cooled No
Torque Out @ 1750 rpm 876 in lb
Output (Shaft or Bore) Size 1 in
Input (Shaft or Bore) Size 5/8 in
Output Torque @ RPM 785 in lb @ 1150 rpm, 876 in lb @ 1750 rpm
Box Length 6 in
Output RPM @ 1750 rpm Input 43.75 rpm
HP @ RPM 0.3333333 hp @ 1200 rpm, 0.5 hp @ 1800 rpm
Output Configuration Left & Right Output
Base to Shaft Center Height w/High Vert. Base Kit 4.88 in
Input HP @ RPM 0.49 hp @ 1150 rpm, 0.81 hp @ 1750 rpm
Bolt Center 5 in x 2 7/8 in
Max. Thrust Load @ RPM 700 lb/in @ 1150 rpm, 700 lb/in @ 1750 rpm
Use With 721
Motor Application General Purpose
Keyway Size 3/16 x 3/32
Base to Shaft Center Height w/Low Vert. Base Kit 3.13 in
Box Height 6 3/8 in
Base to Shaft Center Height w/Vert. "J" Base Kit 3.94 in
Bore Code B5
Output RPM @ Input RPM 44 rpm @ 1750 rpm
Washdown Duty No
Thermal Input Horsepower @ 1750 RPM N/A
Shaft Assembly Code H
Max. Thrust Load @ 1150 rpm 700 lb/in
Bolt Centers w/ Std. Base Kit (in) 6 3/8 x 4 11/16
Torque Out @ 1150 rpm 785 in lb
Ratio 40:1
Frame Size 56C
Bolt Center Length x Bolt Center Width 5 in x 2 7/8 in
Box Width 5 3/16 in
Input Configuration C-Face Coupled
Bolt Centers w/ Vertical "J" Base Kit (in) 8.63 x 2.63
Worm Position Universal
Bolt Centers w/ Vertical Base Kits (in) 8 3/8 x 4 7/8
Max. Overhung Load @ 1750 rpm 700 lb/in
Lubrication None
Base to Shaft Center Height w/Std. Base Kit 4.81 in
Frame 56C
Weight 36.1 LB
EAN or UPC 781711527146
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