Skip to content Skip to navigation menu
Boston GearRF721-40-B5-J

RF721-40-B5-J

700 Series C-Face Coupled Reducer
Item #101870213
  • 2 1/16" Center Distance
  • 40:1 Ratio
  • 56C Frame
  • C-Face Coupled Input
  • Right Output
  • Universal Worm Position
  • No Lubricant
  • Cast Iron
+ Show More + Show Less
Boston GearRF721-40-B5-J
Price Unavailable
Price Unavailable
Pricing is unavailable at this time. Please contact Customer Service for assistance.
Online Ordering Restricted
Please contact Customer Service for assistance.
Contact Customer Service
    Shipment Options
  • 2 1/16" Center Distance
  • 40:1 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
Lubrication None
Housing Material Cast Iron
Family Name RF
Worm Position Universal
Max. Thrust Load @ RPM 700 lb/in @ 1150 rpm, 700 lb/in @ 1750 rpm
Box Height 6 3/8 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 Configuration C-Face Coupled
Max. Thrust Load @ 1150 rpm 700 lb/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
Box Width 5 3/16 in
Max. Overhung Load @ 1750 rpm 700 lb/in
Base to Shaft Center Height w/Vert. "J" Base Kit 3.94 in
Center Distance 2 1/16 in
Washdown Duty No
Bolt Centers w/ Vertical "J" Base Kit (in) 8.63 x 2.63
Thermal Input Horsepower @ 1750 RPM N/A
Keyway Size 3/16 x 3/32
Torque Out @ 1750 rpm 876 in lb
Base to Shaft Center Height w/Std. Base Kit 4.81 in
Bolt Center 5 in x 2 7/8 in
Bolt Centers w/ Std. Base Kit (in) 6 3/8 x 4 11/16
Base to Centerline of Output Shaft 2 9/32 in
Bore Code B5
Base to Shaft Center Height w/Low Vert. Base Kit 3.13 in
Output (Shaft or Bore) Size 1 in
Box Length 6 in
Max. Input HP @ 100 rpm 0.074 hp
Motor Application General Purpose
Reduction Type Single Reduction
Use With 721
Frame 56C
Base to Shaft Center Height w/High Vert. Base Kit 4.88 in
Input (Shaft or Bore) Size 5/8 in
Ratio 40:1
Shaft Assembly Code J
Frame Size 56C
Max. Overhung Load @ RPM 700 lb/in @ 1150 rpm, 700 lb/in @ 1750 rpm
Input HP @ RPM 0.49 hp @ 1150 rpm, 0.81 hp @ 1750 rpm
Output Configuration Right Output
Output RPM @ 1750 rpm Input 43.75 rpm
Output RPM @ Input RPM 44 rpm @ 1750 rpm
Fan Cooled No
Motor HP 1/2 hp
Output Torque @ RPM 785 in lb @ 1150 rpm, 876 in lb @ 1750 rpm
Torque Out @ 1150 rpm 785 in lb
Weight 36.1 LB
EAN or UPC 781711527153
We're here for you
with Service Centers across the country -
We have your back
Close Compare List Open Compare List Toggle

Product Comparison