Talk with an expert: 1-800-808-2131

Inline Helical Gear Reducers

“WINL series” inline helical gear reducers feature a HP range of ¼-100 HP, 37-147 mm box sizes, 2:1-120:1 speed ratios and a cast iron housing for unquestioned strength and reliability. Offered in a variety of NEMA C-face quill style motor input flange configurations, the “WINL” series allows users to easily locate off-the-shelf NEMA motors in lieu of custom gear motors with special first pinion gears. WINL’s bolt hole pattern, base to center line height, output shaft diameter and usable shaft length match the “R” series of the inline market leader making plant retrofitting a breeze.

Product Features

  • 2:1 - 120:1 ratios (other ratios available as custom orders)
  • Box sizes 37 - 147
  • Built for high efficiency, high strength, and low noise
  • All cast iron housings for unquestioned strength and reliability
  • Wide range of ratios from 2:1 to 120:1
  • Horsepower range from 1/4 HP to 100 HP
  • Gears are precision ground for better rotation and quieter operation
  • Gearbox flanges are designed to accept NEMA C-Face electric motors
  • Drop-in for most major European-produced Inline reducer brands
  • 2-year warranty
WINL PDF Drawings Download Mechanical Ratings Chart Download 3-D Drawings Download 2-D Drawings Installation and Maintenance Manual Oil Fill Specifications and Requirements WINL Series - Service Class Ratings Table Promotional Brochure
Model Number
Box Size
Actual Ratio
Output RPM @ 1800 RPM Input
Input Power (HP)
Output Torque (lbs. in.)
OHL (lbs.)
NEMA Frame
Approx Wt. (lbs.)
List Price
Model NumberBox SizeRatioActual RatioOutput RPM @ 1800 RPM InputInput Power (HP)Output Torque (lbs. in.)OHL (lbs.)NEMA FrameStagesApprox Wt. (lbs.)AvailabilityList Price
WINL37-5/1-56C375:14.883595.9197030556C231Call for Availability$600.00
WINL37-5/1-145TC375:14.883595.91970305145TC231In Stock$663.72
WINL37-10/1-56C3710:110.021754.04136038856C231Call for AvailabilityPlease Call
WINL37-10/1-145TC3710:110.021754.041360388145TC231In Stock$663.72
WINL37-15/1-56C3715:115.751112.99158045156C231Call for AvailabilityPlease Call

For more General Purpose-Single-Phase Motors, see our Fractional Farm Duty Motors.

View Fractional Farm Duty Motors