Harrington MR Series 1-1/2 - 2 Ton Motorized Trolleys, 4 Button, Dual Speed - MR020SD

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The Harrington Motorized Trolleys MR Series further expand the capabilities of our NER/ER line of electric hoists. The MR Series Motorized Trolleys are built for the most demanding applications. These trolleys feature an innovative side guide roller system that results in very smooth travel along the beam.
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MR Series

Capacity (ton)

1-1/2 - 2 Ton

Standard Voltage


Flange Range

3.23" - 6.02"

Control Type

Powered Trolley, Dual Speed

Minimum Radius Curve


Traverse Speed

80/13 FPM

Base Model Weight

86 lbs.

  • UL® Listed - Certified and listed to UL 1340 “Standard for Hoists.
  • Easy Access Suspension - External pins allow for quick change from hook to lug for trolley mount configurations on most models.
  • Perpendicular Orientation - MR motorized trolley mount hoists are configured as perpendicular to the beam. Parallel mount is available as an option.
  • Green Initiative - Built smarter without the use of harmful materials. Environmentally friendly. RoHS compliant.
  • Notched Hook and Latch System - Provides positive closing and improves resistance against lateral forces.
  • High Air Flow - Cooler motor and brake attributed to an engineered motor fin, fan blade and fan cover design.
  • Unique Load Sheave - Increased number of pockets reduce chain vibration and increase chain life. 5 pockets standard; 6 pockets on smaller body hoists.
  • Extended Chain Life - Decreased chain wear as a result of a revolutionary heat treatment process, improved material and chain size.
  • Limit Switches - Low-profile upper and lower limit switches are standard.
  • Contactors - Mechanically interlocked, heavy-duty contactors on single speed models.
  • Friction Clutch and Load Brake - Friction clutch is standard on NER/ER models and friction clutch with mechanical load brake standard on ER models. Carbon friction material provides consistent performance over a wide temperature range.
  • Standard Count Hour Meter - Records and displays the number of lowering starts and hoist on time which is valuable for preventive maintenance. Integral to VFD on dual speed models.
  • “The Guardian”: Smart Brake Technology - A current driven electromagnetic brake does not release unless the motor is energized. 10 year hoist brake warranty.
  • Pendant Controls - Ergonomic design for operator comfort. Red button emergency stop is standard on all 4-button pendants.