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Imperial Electric Elevator Traction Machines Brochure

Imperial Electric Elevator Motors Brochure


Geared Traction Machine - TM Series

Models TM21, TM26, and TM35

Single Wrap

The TM Series geared traction machine from Imperial Electric is a compact, easily installed and
serviced, superior quality solution for medium speed, high capacity elevators.

The streamlined design of the TM Series allows significant weight reduction without sacrificing durability or frame rigidity. The TM Series slow shaft uses tapered roller bearings that require no periodic grease lubrication, assuring reliable performance over time without the risk of efficiency loss or failure that can occur on other machines when bearing lubrication is overlooked. The TM Series worm shaft, using the recommended geared machine oil, employs a unique design that protects the shaft. The TM Series traction sheave is fitted with shrink-fit sheaves.

The TM Series uses AC VVVF motors from Imperial Electric. Imperial motors use cast iron construction and hot rolled steel shafts, achieving a level of performance and dependability you can trust through long years of service. Imperial motors are renowned for quiet performance and long service life.


  • Modernization and new construction
  • Overhead machine room
  • 2000 pound (900kg) to 6000 pound (2700kg) capacity at speeds from 100 to 400 feet per minute (0.5 to 2.0 m/s)
  • TM35 can handle higher load in some cases, contact our officee


  • Three machine family for optimum match to speed and capacity
  • Compact design and reduced weight make handling and installation easier
  • Machine sleeve bushings and tapered roller bearings require no periodic lubrication
  • Flexible style coupling minimizes vibration and enables fast motor alignment
  • Designed for maintainability
  • Rope guard included with every machine


  • ASME A17.1/CSA-B44, EN81-1
  • Oil bath worm gear unit, high strength cast iron case
  • Alloy steel worm, case hardened, stress relieved, with anti-wear bronze bushings
  • Tough nickel based, bronze worm wheel for extended durability
  • Alloy steel worm wheel shaft, case hardened, tempered
  • High-strength grade, ductile iron sheave
  • Electrically released, independently acting brakes
  • Motor is UL/CSA CUS Certified


94MB Geared Traction Machine

The 94MB is the perfect solution for mid-rise applications that will benefit both modernization and new construction projects. It has a significantly smaller footprint and requires simpler site preparation. The compact design and reduced weight allow for easy handling, installation and maintainability.

Imperial Electric’s comprehensive geared traction package includes engineered drawing packages, industry leading components, safety gears and accessories; and complete on-site service, documentation and training.


  • CSA, EN81-1, IEC34-9, -14, CEI 2-23, CEI EN 60034-9 certified
  • Oil bath worm gear unit, high strength cast iron case
  • Alloy steel worm, case hardened, stress relieved, with antiwear bronze brushings
  • Anti-friction bronze wormwheel, operatively matched to worm
  • High-strength grade, cast iron sheave
  • Spring applied, electrically released brakes
  • 1024 ppr incremental encoder