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Boston Gear309B-20K-J

309B-20K-J

300 Series Standard Reducer
Item #101837651
  • .94" Center Distance
  • 20:1 Ratio
  • Shaft Input
  • Left Output
  • Top Worm Position
  • Mobil SHC634 Synthetic Lubricant
  • Cast Iron
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Boston Gear309B-20K-J
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    Shipment Options
  • .94" Center Distance
  • 20:1 Ratio
  • Shaft Input
  • Left Output
  • Top Worm Position

features

  • Prelubricated for ambient temperature range of 50 °F to 125 °F

caution

  • Never use cheater bars/extensions
  • Never substitute metric for fractional tools
Box Width 2 3/4 in
Input (Shaft or Bore) Size 5/16 in
Bolt Center 2 3/4" x 2 3/4"
Max. Overhung Load @ 1750 rpm 25 lb/in
Reduction Type Single Reduction
Max. Thrust Load @ RPM 25 lb/in @ 1150 rpm, 25 lb/in @ 1750 rpm
Box Height 3 15/32 in
Base to Centerline of Input Shaft 2 1/2 in
Ratio 20:1
Installed Options Horizontal Base
Max. Overhung Load @ RPM 25 lb/in @ 1150 rpm, 25 lb/in @ 1750 rpm
Motor Application General Purpose
Output RPM @ 1750 rpm Input 87.5 rpm
Frame Size Shaft Input, Not a C-Face
Thermal Input Horsepower @ 1750 RPM N/A
Output RPM @ Input RPM 88 rpm @ 1750 rpm
Base to Centerline of Output Shaft 1 9/16 in
Lubrication Mobil SHC634 Synthetic
Box Length 2 3/4 in
Output Torque @ RPM 43 in lb @ 1750 rpm
Input HP @ RPM 0.17 hp @ 1750 rpm
Max. Thrust Load @ 1150 rpm 25 lb/in
Torque Out @ 1150 rpm N/A
Shaft Assembly Code J
Family Name Std Unit
HP @ RPM 0.1666667 hp @ 1800 rpm
Frame N/A
Worm Position Top
Output (Shaft or Bore) Size 1/2 in
Center Distance 0.94 in
Bolt Center Length x Bolt Center Width 2 3/4 in x 2 3/4 in
Input Configuration Shaft Input
Use With 309
Torque Out @ 1750 rpm 43 in lb
Washdown Duty No
Output Configuration Left Output
Fan Cooled No
Housing Material Cast Iron
Weight 10.1 LB
EAN or UPC 781711455517
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