Single Girder Underhung Motorized End Trucks

Designing the Future, Today

Harrington's UM motorized end trucks offer the benefit of an underhung space saving design and are recommended for heavy-duty, class "C" crane applications. End Truck frames are fabricated from MC channel to provide structural integrity and strength.

Side Guide Rollers and Rubber Bumpers

Unique side guide rollers reduce wheel friction and allow smooth crane travel and rubber bumpers are included.

Underhung Space Saving Design

Get the most out of your space by using our underhung end trucks to move heavy-duty, class "C" cranes.

Heavy-Duty Drives

Drives are designed for crane service, with a 30 minute rating and feature cooling fins for efficient heat dissipation.

  • 2 - 5 Ton - Up to 50' Span
  • Class C
  • Crane Manufacturers Association of America (CMAA),
  • National Electric Code (NEC) and the American National Standards Institute (ANSI/ASME)
  • Two fully painted trucks
  • Two sealed, totally enclosed, non-ventilated (TENV) motors with adjustable D.C. brakes
  • Two helical gear reducers
  • Rubber bumpers
  • Bridge beam fastener set
  • Bridge fabrication prints
  • Frames fabricated from MC channel provide superior strength, rigidity and structural integrity
  • Girder connection, bracing and collector mounting bracket holes are pre-drilled for easy installation
  • Runway flange widths up to 6"
  • Sealed TENV drives with quiet, smooth–operating helical gear reducers
  • Gear reducer is designed for easy field conversion between L and S speeds
  • Drives are designed for crane service, with a 30 minute rating and feature cooling fins for efficient heat dissipation
  • Drives are connectable for 230/460V-3-60
  • Thermal motor protection
  • Externally adjustable D.C. brakes allow controlled deceleration — adjustable up to 50% of rated motor torque
  • Drives and brakes are compatible with Electronic Acceleration Control (EAC) and Variable Frequency Drive (VFD)
  • Reduced wheel friction with heavy-duty side guide rollers results in smooth crane travel
  • Guide rollers are 3 1/2" O.D. with fixed steel axles
  • Dual tread wheels for use on S or W shaped runway beams — each wheel fitted with 2 deep groove ball bearings
  • Rail sweeps
  • Drop stops
  • Longer or shorter end truck lengths
  • Other voltages
  • Wider flange ranges