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Boston Gear721-50-J

721-50-J

700 Series Standard Reducer
Item #101807787
  • 2 1/16" Center Distance
  • 50:1 Ratio
  • Shaft Input
  • Right Output
  • Universal Worm Position
  • No Lubricant
  • Cast Iron
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Boston Gear721-50-J
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    Shipment Options
  • 2 1/16" Center Distance
  • 50:1 Ratio
  • Shaft Input
  • Right 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
Max. Thrust Load @ 1150 rpm 700 lb/in
Motor Application General Purpose
Box Length 6 in
Use With 721
HP @ RPM 0.3333333 hp @ 1200 rpm, 0.5 hp @ 1800 rpm
Output (Shaft or Bore) Size 1 in
Thermal Input Horsepower @ 1750 RPM N/A
Max. Thrust Load @ RPM 700 lb/in @ 1150 rpm, 700 lb/in @ 1750 rpm
Max. Overhung Load @ 1750 rpm 700 lb/in
Max. Overhung Load @ RPM 700 lb/in @ 1150 rpm, 700 lb/in @ 1750 rpm
Base to Centerline of Input Shaft 4 11/32 in
Worm Position Universal
Washdown Duty No
Family Name Std Unit
Lubrication None
Input (Shaft or Bore) Size 5/8 in
Base to Shaft Center Height w/Std. Base Kit 4.81 in
Fan Cooled No
Base to Centerline of Output Shaft 2 9/32 in
Bolt Centers w/ Std. Base Kit (in) 6 3/8 x 4 11/16
Frame N/A
Shaft Assembly Code J
Output Configuration Right Output
Box Height 6 3/8 in
Max. Input HP @ 100 rpm 0.057 hp
Torque Out @ 1750 rpm 857 in lb
Base to Shaft Center Height w/Low Vert. Base Kit 3.13 in
Center Distance 2.0625 in
Input HP @ RPM 0.38 hp @ 1150 rpm, 0.66 hp @ 1750 rpm
Bolt Centers w/ Vertical "J" Base Kit (in) 8.63 x 2.63
Torque Out @ 1150 rpm 750 in lb
Base to Shaft Center Height w/High Vert. Base Kit 4.88 in
Output RPM @ 1750 rpm Input 35 rpm
Housing Material Cast Iron
Input Configuration Shaft Input
Frame Size Shaft Input, Not a C-Face
Box Width 3 13/16 in
Ratio 50:1
Bolt Center 6 3/8 in x 4 11/16 in
Reduction Type Single Reduction
Output Torque @ RPM 750 in lb @ 1150 rpm, 857 in lb @ 1750 rpm
Base to Shaft Center Height w/Vert. "J" Base Kit 3.94 in
Output RPM @ Input RPM 35 rpm @ 1750 rpm
Bolt Centers w/ Vertical Base Kits (in) 8 3/8 x 4 7/8
Weight 24.1 LB
EAN or UPC 781711517048
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