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