Skip to content Skip to navigation menu
Boston GearRF718-20-B5-J

RF718-20-B5-J

700 Series C-Face Coupled Reducer
Item #101835845
  • 1 3/4" Center Distance
  • 20:1 Ratio
  • 56C Frame
  • C-Face Coupled Input
  • Right Output
  • Universal Worm Position
  • No Lubricant
  • Cast Iron
+ Show More + Show Less
Boston GearRF718-20-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
  • 1 3/4" Center Distance
  • 20:1 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

  • Mounting of speed reducers in overhead positions may be hazardous
  • Use of external guides or supports is strongly recommended for overhead mounting.
Box Width 5 1/32 in
Frame Size 56C
Output Torque @ RPM 525 in lb @ 1150 rpm, 590 in lb @ 1750 rpm
Fan Cooled No
Input (Shaft or Bore) Size 5/8 in
Lubrication None
Max. Thrust Load @ 1150 rpm 500 lb/in
Reduction Type Single Reduction
Washdown Duty No
Torque Out @ 1150 rpm 525 in lb
Base to Centerline of Output Shaft 2 1/16 in
Bolt Centers w/ Vertical Base Kits (in) 7.38 x 4.00
Family Name RF
Worm Position Universal
Bore Code B5
Use With 718
Torque Out @ 1750 rpm 590 in lb
HP @ RPM 0.75 hp @ 1800 rpm
Shaft Assembly Code J
Motor Application General Purpose
Keyway Size 3/16 x 3/32
Input HP @ RPM 0.58 hp @ 1150 rpm, 0.97 hp @ 1750 rpm
Max. Overhung Load @ 1750 rpm 500 lb/in
Output RPM @ 1750 rpm Input 87.5 rpm
Box Height 5 3/4 in
Thermal Input Horsepower @ 1750 RPM N/A
Frame 56C
Max. Thrust Load @ RPM 500 lb/in @ 1150 rpm, 500 lb/in @ 1750 rpm
Bolt Centers w/ Std. Base Kit (in) 5 3/4 x 4 1/2
Box Length 5 1/2 in
Base to Shaft Center Height w/Vert. "J" Base Kit 3.5 in
Bolt Center Length x Bolt Center Width 4 3/16 in x 2 3/4 in
Bolt Center 4 3/16 in x 2 3/4 in
Output RPM @ Input RPM 88 rpm @ 1750 rpm
Bolt Centers w/ Vertical "J" Base Kit (in) 7.63 x 2.50
Housing Material Cast Iron
Input Configuration C-Face Coupled
Ratio 20:1
Base to Shaft Center Height w/High Vert. Base Kit 4.38 in
Max. Input HP @ 100 rpm 0.08 hp
Max. Overhung Load @ RPM 500 lb/in @ 1150 rpm, 500 lb/in @ 1750 rpm
Output (Shaft or Bore) Size 7/8 in
Base to Shaft Center Height w/Low Vert. Base Kit 3 in
Center Distance 1 3/4 in
Motor HP 3/4 hp
Base to Centerline of Input Shaft 3 13/16 in
Base to Shaft Center Height w/Std. Base Kit 4.38 in
Output Configuration Right Output
Weight 27.1 LB
EAN or UPC 781711526798
We're here for you
with Service Centers across the country -
We have your back
Close Compare List Open Compare List Toggle

Product Comparison