The GO-B3 Battery Powered Gate Opener generates an 2 RPM paced power output of 3,000 ft-lbs of Torque.

The WORKMASTER® GO-B3 Gate Opener is a battery-powered, torque-controlled, portable impact tool that produces up to 3000 ft-lbs of torque to open hopper car gates that are easy to moderately-difficult to open. Although, at 29.5 lbs the opener is compact and lightweight, because it is a torque wrench, it does require the use of an easy to attach torque reaction arm for safety. The GO-B3 is supplied with two (2) long lasting HD Lithium-Ion batteries which, if properly maintained, will open hundreds of hopper cars for years.
GO-B3 Gate Opener

The GO-B3 Hopper Car Gate Opener is well suited for worksites that experience:

  • Unloading sites that receive occasional to light hopper car traffic;
  • Railcars that vary from easy-to-open to moderately difficult;
  • Neither compressed air or electric power is available or is limited;
  • Majority of railcars have fixed position gate mechanisms;
  • Trackside surface is level, smooth, and unobstructed;
  • Narrow decks or platforms preclude wheeled-cart or beam-mounted Opener;
  • Site security requires portable, easy to remove and store tools and equipment.
GO-B3 Hopper Car Gate Opener Features

Battery Powered

Operates at sites where air or electric power is not available.

Quick Change Battery

Lithium-Ion HD Battery fully charges in under 60 minuets

Smooth, Continuous Force

Facilitates steady, controlled gate opening without concern for wear of gate mechanism

Capstan Drive Fitting

Precision machined, 4140 tool steel, 1-piece construction with 1″ sq socket using 1-piece Ret-Ring Retainer opens hundreds of gates.

Hardened Alloy Steel

For durability and long cycle life.

Lightweight Portability

Enables one worker to easily carry and position this 22 lb powerhouse and thereby improve safety, increase productivity, and reduce manpower planning.

Virtually Noiseless Operation

Accommodates noise restrictions at plant or unloading site operations.

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    GO-B3 Hopper Car Gate Opener Specifications


    GO-B3 Battery Powered Gate Opener


    Li-Ion Battery

    Working Torque

    3,200 ft-lbs


    21.5″L X 25.5″ H (with Drive Fitting & Reaction Arm)

    Height Adjustment

    Lift-On Portability to Accommodate Any Capstan Height

    Output Drive

    1″ Male Square Drive

    Input Drive

    1″ Female Square Drive


    • Drive Fitting with Ret-Ring Pin
    • Torque Tool (1″ Square Drive)
    • 1″ Square Drive Spare Anvil
    • Torque Reaction Arm
    • Torque Reaction Arm Secure Screw
    • 2 HD Lithium-Ion Batteries
    • Battery Charger
    • 1″ Square Drive Spare Anvil
    • 1/8″ Allen Wrench
    • Sturdy Carrying Bag
    • Operators Manual

    Gate Opener Weight

    29.5 lbs