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Boston GearSWA721-900-G

SWA721-900-G

700 Series Double Reduction Parallel Reducer
Item #102890847
  • 2 1/16" Center Distance
  • 900:1 Ratio
  • Shaft Input
  • Hollow Output
  • Universal, Parallel Worm Position
  • No Lubricant
  • Cast Iron
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Boston GearSWA721-900-G
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    Shipment Options
  • 2 1/16" Center Distance
  • 900:1 Ratio
  • Shaft Input
  • Hollow Output
  • Universal, Parallel Worm Position

features

  • Housing is straddle milled top and bottom for precise alignment
  • Large oil reservoir provides efficient heat dissipation and lubrication for longer life
  • Internal baffles ensure positive, leak-free venting
  • Super finished oil seal diameters on both input and output shafts extend seal life
  • High strength steel output shaft ensures capacity for high torque
  • Pipe plugs allow easy fill, level and drain in any mounting position
  • Bronze worm gear is straddle mounted between heavy-duty tapered roller bearings to increase thrust and load capacities on size 713 to 760
  • Rugged housing fabricated of fine-grained cast iron for maximum strength and greater precision during worm and gear alignment

caution

  • Lubrication required
Output Configuration Hollow Output
Base to Shaft Center Height w/Std. Base Kit 4.81 in
Box Length 5 13/64 in
Output RPM @ 1750 rpm Input 1.94 rpm
Max. Thrust Load @ 1150 rpm 700 lb/in
Shaft Assembly Code G
Motor Application General Purpose
Input Configuration Shaft Input
Base to Shaft Center Height w/Vert. "J" Base Kit 3.94 in
Torque Out @ 1750 rpm 1050 in lb
Base to Shaft Center Height w/Low Vert. Base Kit 3.13 in
HP @ RPM 0.125 hp @ 1800 rpm
Lubrication None
Torque Out @ 1150 rpm N/A
Frame N/A
Max. Overhung Load @ 1750 rpm 700 lb/in
Bolt Centers w/ Vertical Base Kits (in) 8 3/8 x 4 7/8
Washdown Duty No
Thermal Input Horsepower @ 1750 RPM N/A
Input (Shaft or Bore) Size 1/2 in
Fan Cooled No
Frame Size Shaft Input, Not a C-Face
Output (Shaft or Bore) Size 1 1/8 in
Bolt Centers w/ Vertical "J" Base Kit (in) 8.63 x 2.63
Reduction Type Double Reduction
Bolt Center 5 in x 2 7/8 in
Base to Centerline of Input Shaft 3 3/8 in
Housing Material Cast Iron
Box Height 6 25/64 in
Ratio 900:1
Base to Shaft Center Height w/High Vert. Base Kit 4.88 in
Center Distance 2 1/16 in
Box Width 9 55/64 in
Family Name SWA
Bolt Centers w/ Std. Base Kit (in) 6 3/8 x 4 11/16
Base to Centerline of Output Shaft 4 3/32 in
Worm Position Universal¦Parallel
Weight 37.1 LB
EAN or UPC 884107266626
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