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Boston GearRF721-5-B5-J

RF721-5-B5-J

700 Series C-Face Coupled Reducer
Item #102817696
  • 2 1/16" Center Distance
  • 5:1 Ratio
  • 56C Frame
  • C-Face Coupled Input
  • Right Output
  • Universal Worm Position
  • No Lubricant
  • Cast Iron
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Boston GearRF721-5-B5-J
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    Shipment Options
  • 2 1/16" Center Distance
  • 5:1 Ratio
  • 56C Frame
  • C-Face Coupled Input
  • 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
Torque Out @ 1150 rpm 575 in lb
Base to Centerline of Input Shaft 4 11/32 in
Input HP @ RPM 2.33 hp @ 1150 rpm, 3.66 hp @ 1750 rpm
Max. Overhung Load @ 1750 rpm 700 lb/in
Use With 721
Housing Material Cast Iron
HP @ RPM 3 hp @ 1800 rpm
Bolt Center 5 in x 2 7/8 in
Shaft Assembly Code J
Family Name RF
Ratio 5:1
Output Configuration Right Output
Max. Thrust Load @ 1150 rpm 700 lb/in
Output (Shaft or Bore) Size 1 in
Output Torque @ RPM 575 in lb @ 1150 rpm, 620 in lb @ 1750 rpm
Lubrication None
Output RPM @ 1750 rpm Input 350 rpm
Input (Shaft or Bore) Size 5/8 in
Reduction Type Single Reduction
Worm Position Universal
Max. Overhung Load @ RPM 700 lb/in @ 1150 rpm, 700 lb/in @ 1750 rpm
Fan Cooled No
Output RPM @ Input RPM 350 rpm @ 1750 rpm
Box Width 5 3/16 in
Box Height 6 3/8 in
Bolt Center Length x Bolt Center Width 5 in x 2 7/8 in
Frame Size 56C
Motor Application General Purpose
Box Length 6 in
Center Distance 2.0625 in
Input Configuration C-Face Coupled
Frame 56C
Washdown Duty No
Thermal Input Horsepower @ 1750 RPM N/A
Bore Code B5
Torque Out @ 1750 rpm 620 in lb
Base to Centerline of Output Shaft 2 9/32 in
Max. Thrust Load @ RPM 700 lb/in @ 1150 rpm, 700 lb/in @ 1750 rpm
Weight 36.1 LB
EAN or UPC 781711245248
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