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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
Frame Size Shaft Input, Not a C-Face
Base to Centerline of Input Shaft 1 9/16 in
Input (Shaft or Bore) Size 5/16 in
Input Configuration Shaft Input
Box Width 2 3/4 in
Fan Cooled No
Output (Shaft or Bore) Size 1/2 in
Box Length 2 3/4 in
Lubrication Mobil SHC634 Synthetic
Thermal Input Horsepower @ 1750 RPM N/A
Output Configuration Left Output
Use With 309
Frame N/A
Housing Material Cast Iron
Ratio 20:1
Torque Out @ 1150 rpm N/A
Torque Out @ 1750 rpm 43 in lb
Max. Thrust Load @ 1150 rpm 25 lb/in
Worm Position Bottom
Bolt Center Length x Bolt Center Width 2 3/4 in x 2 3/4 in
Reduction Type Single Reduction
Max. Thrust Load @ RPM 25 lb/in @ 1150 rpm, 25 lb/in @ 1750 rpm
Shaft Assembly Code J
Bolt Center 2 3/4" x 2 3/4"
Center Distance 0.94 in
Installed Options Horizontal Base
Base to Centerline of Output Shaft 2 1/2 in
Washdown Duty No
Input HP @ RPM 0.17 hp @ 1750 rpm
Max. Overhung Load @ RPM 25 lb/in @ 1150 rpm, 25 lb/in @ 1750 rpm
Max. Overhung Load @ 1750 rpm 25 lb/in
HP @ RPM 0.1666667 hp @ 1800 rpm
Box Height 3 15/32 in
Family Name Std Unit
Output RPM @ Input RPM 88 rpm @ 1750 rpm
Output Torque @ RPM 43 in lb @ 1750 rpm
Motor Application General Purpose
Output RPM @ 1750 rpm Input 87.5 rpm
Weight 10.1 LB
EAN or UPC 781711455210
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