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Boston Gear309A-20K-J

309A-20K-J

300 Series Standard Reducer
Item #101856429
  • .94" Center Distance
  • 20:1 Ratio
  • Shaft Input
  • Left Output
  • Bottom Worm Position
  • Mobil SHC634 Synthetic Lubricant
  • Cast Iron
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Boston Gear309A-20K-J
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    Shipment Options
  • .94" Center Distance
  • 20:1 Ratio
  • Shaft Input
  • Left Output
  • Bottom Worm Position

features

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

caution

  • Any sliding spool valve, if held for long periods of time, may stick and not spring return due to fluid residue formation and therefore should be cycled periodically to prevent this from happening
Housing Material Cast Iron
Frame N/A
Max. Thrust Load @ 1150 rpm 25 lb/in
Base to Centerline of Input Shaft 1 9/16 in
Shaft Assembly Code J
Fan Cooled No
Max. Thrust Load @ RPM 25 lb/in @ 1150 rpm, 25 lb/in @ 1750 rpm
Input HP @ RPM 0.17 hp @ 1750 rpm
Thermal Input Horsepower @ 1750 RPM N/A
HP @ RPM 0.1666667 hp @ 1800 rpm
Worm Position Bottom
Output RPM @ 1750 rpm Input 87.5 rpm
Output Configuration Left Output
Output (Shaft or Bore) Size 1/2 in
Torque Out @ 1750 rpm 43 in lb
Installed Options Horizontal Base
Max. Overhung Load @ 1750 rpm 25 lb/in
Max. Overhung Load @ RPM 25 lb/in @ 1150 rpm, 25 lb/in @ 1750 rpm
Frame Size Shaft Input, Not a C-Face
Bolt Center Length x Bolt Center Width 2 3/4 in x 2 3/4 in
Lubrication Mobil SHC634 Synthetic
Output Torque @ RPM 43 in lb @ 1750 rpm
Output RPM @ Input RPM 88 rpm @ 1750 rpm
Bolt Center 2 3/4" x 2 3/4"
Box Length 2 3/4 in
Use With 309
Motor Application General Purpose
Washdown Duty No
Input (Shaft or Bore) Size 5/16 in
Torque Out @ 1150 rpm N/A
Input Configuration Shaft Input
Box Width 2 3/4 in
Reduction Type Single Reduction
Center Distance 0.94 in
Ratio 20:1
Box Height 3 15/32 in
Base to Centerline of Output Shaft 2 1/2 in
Family Name Std Unit
Weight 10.1 LB
EAN or UPC 781711455210
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