Skip to content Skip to navigation menu
Boston GearS721W-50-G

S721W-50-G

700 Series Hollow Output Reducer
Item #102817698
  • 2 1/16" Center Distance
  • 50:1 Ratio
  • Shaft Input
  • Hollow Output
  • Universal Worm Position
  • No Lubricant
  • Cast Iron
+ Show More + Show Less
Boston GearS721W-50-G
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
  • 50:1 Ratio
  • Shaft Input
  • Hollow Output
  • Universal Worm Position

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
Output Torque @ RPM 750 in lb @ 1150 rpm, 857 in lb @ 1750 rpm
Max. Thrust Load @ RPM 700 lb/in @ 1150 rpm, 700 lb/in @ 1750 rpm
Washdown Duty No
Frame Size Shaft Input, Not a C-Face
Base to Centerline of Input Shaft 3 3/4 in
Input Configuration Shaft Input
Housing Material Cast Iron
Thermal Input Horsepower @ 1750 RPM N/A
Input HP @ RPM 0.38 hp @ 1150 rpm, 0.66 hp @ 1750 rpm
Shaft Assembly Code G
Input (Shaft or Bore) Size 5/8 in
Max. Thrust Load @ 1150 rpm 700 lb/in
Frame N/A
Ratio 50:1
Output RPM @ Input RPM 35 rpm @ 1750 rpm
Box Height 6 3/8 in
Fan Cooled No
HP @ RPM 0.3333333 hp @ 1200 rpm, 0.5 hp @ 1800 rpm
Box Length 6 in
Output Configuration Hollow Output
Output RPM @ 1750 rpm Input 35 rpm
Use With 721
Torque Out @ 1750 rpm 857 in lb
Box Width 4 1/8 in
Max. Overhung Load @ RPM 700 lb/in @ 1150 rpm, 700 lb/in @ 1750 rpm
Lubrication None
Center Distance 2 1/16 in
Motor Application General Purpose
Bolt Center 5 in x 2 7/8 in
Output (Shaft or Bore) Size 1 1/8 in
Family Name S
Base to Centerline of Output Shaft N/A
Max. Overhung Load @ 1750 rpm 700 lb/in
Worm Position Universal
Bolt Center Length x Bolt Center Width 5 in x 2 7/8 in
Installed Options Flanged Base
Torque Out @ 1150 rpm 750 in lb
Reduction Type Single Reduction
Weight 28.0 LB
EAN or UPC 191191806684
We're here for you
with Service Centers across the country -
We have your back
Close Compare List Open Compare List Toggle

Product Comparison