Cast Iron – Narrow (NH Series)

Cast Iron – Narrow (NH Series)


Product Description

The Grove Gear IRONMAN NH Series features a compact and narrow profile designed to fit space allocations in new or existing equipment. Small, but mighty, the cast iron gear reducer is packed full of premium features.


  • Center Distances from 1.33” through 5.25” available.
  • 14 sizes available with input horsepower ratings up to 104 HP. 
  • Available in single, double and triple reduction.
  • Ratios from 5:1 to 216,000:1. Helical worm ratios from 25:1 to 600:1.

Standard Features

  • Rugged cast iron housings, covers, and flanges provide superior strength and rigidity. 
  • Factory-filled with premium Mobil Glygoyle 460 polyalkalene glycol lubricant.
  • Large oil capacity provides positive splash lubrication and superior cooling capability. 
  • Viton® double lip seals provide extended life through increased resistance to high temperature, abrasion and chemicals. 
  • O-rings on all bearing covers, eliminating gaskets, sealants and leaks. 
  • Oversized high-speed bearings, positively retained for frequent reversing and start/stop cycles. 
  • Tapered roller bearings on output shaft for high overhung and thrust load capacities. 
  • The unique quill seal guard protects the input seal from damage during motor installation. 
  • Bronze worm gear chill cast from high quality bronze for maximum strength, lubricity and superior life. 
  • Oversized steel output shaft provides superior overhung load and torque characteristics. 
  • All units are 100% run and leak tested at the factory to insure that you receive the highest quality product. 
  • Ultimate application flexibility with all-angle mounting provisions, the widest selection of accessory bases and flanges and the largest selection of stock reducer styles. 
  • Available pre-assembled with LEESON or Lincoln Motors for the perfect GEAR+MOTOR™ package.


  • T Base Worm Over
  • U Base Worm Under 
  • J Mount – Vertical Input Base
  • F Flange
  • VL & VH Vertical Output Base
  • Hollow Shaft Tie Rod Kit
  • Torque Arm Bracket
  • R Riser Block