Heavy-Duty, Enclosed Gear Assemblies

TRUMBULL MITER GEARS are designed to fulfill the following primary functions:

  • To be used as an add-on component to Trumbull Floorstands or Pedestals
  • To be mounted directly to valves where a 90 degree change in the input shaft direction is required
  • For use as a stand-alone component in a valve operating assembly with rotating elements, such as extension stems, where the installed conditions require one or more 90 degree changes of direction

Housings are cast 316 stainless steel or ductile iron 65-45-12 with a Tnemec N140-1211 two-part epoxy, NSF-61 certified exterior coating. The gears are case hardened steel; the gear shafts and fasteners are 316 stainless steel.

Trumbull Miter Gear Assemblies are provided standard with a recessed grease fitting for easy maintenance and Buna-N O-ring seals on each end adapter.

Gear Ratio = 1:1, Input/Output Shaft Diameter = 0.984″.

Trumbull Miter Gears have a recommended maximum torque of 300 ft-lb (406 N-m). For applications with higher torque requirements, please consult Trumbull.

3 Standard End Adapters = 6 Possible Combinations!

End Configurations Model# Weight Typical Usage for Each End Adapter
8" Round x 3-1/2" Round MG1A 39.00 lbs. 8" Round - mates to our Floorstands
8" Round x 3-1/2" Round MG1A MG1A 3-1/2" Round - for use with handwheel or nut operators
8" Round x 4-1/4" Square MG1B 42.00 lbs. 8" Round - mates to our Floorstands
8" Round x 4-1/4" Square MG1B 42.00 lbs. 4-1/4" Square - adapts for guide, bracket & motor mountings
8" Round x 8" Round MG1C 46.00 lbs. Both 8" Round ends mate to our Floorstands & other fabrications such as torque tubes
4-1/4" Square x 3-1/2" Round MG2A 37.00 lbs. 4-1/4" Square - adapts for guide, bracket & motor mountings
4-1/4" Square x 3-1/2" Round MG2A 37.00 lbs. 3-1/2" Round - for use with handwheel or nut operators
4-1/4" Square x 4-1/4" Square MG2B 35.00 lbs. Both 4-1/4" Square ends easily adapt for guide, bracket & motor mountings
3-1/2" Round x 3-1/2" Round MG3A 32.00 lbs. Both 3-1/2" Round ends for use with either extension stem assemblies, handwheel, or nut operators