R20A Series

Applications include grain augers and elevators.



Two-piece aluminum housing for high strength, corrosion resistance and thermal capacity
• Precision machined for exact gear mesh and bearing preload
• Precision forged gears are offered in 1:1 ratio
• Tapered roller bearings provide increased load capacity and bearing life
• Shafting made of high strength steel is standard
• Serviced with 80W90 gear lubricant, run and leak tested before shipment
• The R20A Series weighs 12/15 lbs. including 12 oz of lubricant

R20A Drawing

R20A Drawing

Ratings Chart

R20A Series 1.25" Shaft Diameter

RatioInput RPM
Power & Torque10054010001750


19, 19

Forged Straight Bevel

Input HP8.4335.4653.2371.42
Output Torque*5313413933552572
Input kW6.2926.4439.6953.26
Output Torque**600468291379
All ratings specified with the #1 shaft as the input.                      *Torque measured in inch-lbs    **Torque measured in N-m

LIMITATIONS ON HORSEPOWER AND TORQUE RATINGS:The horsepower and torque ratings given here are generalizations.  Different conditions for various applications may result in higher or lower horsepower capacities.  Under certain conditions the maximum indicated RPM may be exceeded.  For these reasons the ratings cannot be guaranteed for any application.  Prototype testing should be conducted for each application before production.