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Flange Input-Hollow Bore Output

“HdR” series Flange Input – Hollow Bore Output series right angle worm gear reducers are stocked as finished goods with hollow output bore sizes ranging from ⅝” to 1-15/16” with available center distances ranging from 1.33 to 3.25 inches. All motor input flanges are NEMA C-face quill style designs and each unit is sold pre-filled with Mobil SHC634 synthetic gear oil and a brass spring loaded breather plug.

Product Features

  • 5:1 - 60:1 ratios
  • Center distances ranging from 1.33 to 3.25 inches
  • One piece # Fc20 all cast iron housing
  • Embedded double-lip oil seals
  • S45C carbon steel shafts
  • Albc3 aluminum - bronze gear
  • Interior oil channel guide directly and constantly lubes bearings
  • Tapered roller bearing on output and input shafts
  • All angle - radiused mounting holes
  • Air dry special black paint
  • Shaft sleeve protects all shafts
  • Compact design - compact space capability
  • Units filled with Mobil # SHC634 synthetic oil
  • Interchangeability with major brands
  • 1-year warranty
Download Mechanical Ratings Chart Download 3-D Drawings Download 2-D Drawings HdR Installation Maintenance Manual
Model Number
Center Distance (in.)
Output RPM @ 1800 RPM Input
NEMA Frame
Approx Wt. (lbs.)

List Price
Model NumberRatioCenter Distance (in.)Output RPM @ 1800 RPM InputNEMA FrameApprox Wt. (lbs.)SpecificationsList Price
HdRF133-5/1-H-56C5:11.3335056C17Specifications $334.07
HdRF175-5/1-H-56C5:11.7535056C27Specifications $396.02
HdRF206-5/1-H-56C5:12.0635056C32Specifications $474.56
HdRF237-5/1-H-56C5:12.3735056C38Specifications $542.04
HdRF262-5/1-H-182/4TC5:12.62350182/4TC53Specifications $667.04

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

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