Electric Hydraulic Rail Clamp

The TZJ electric hydraulic rail clamp is a normally-closed wind-proof, anti-slip device for rail-mounted cranes, using a fail-safe design of spring clamping and hydraulic release—on power or hydraulic failure, springs automatically clamp the rail. Comprising a mechanical brake unit and a hydraulic station with limit-switch interlock and manual release, it is widely used for wind braking and anti-runaway on gantry cranes, bridge cranes, and girder launchers.

Model
|
TZJ-75 / 120 / 125 / 150 / 160 / 250
Anti-slip Force
|
75 – 250 kN
Motor Power
|
1.5 / 2.2 / 3.0 kW
Rated Pressure
|
11 – 16 MPa
Rail Type
|
P38 – P50、QU70 – QU120
Crane Capacity
|
Below 50T/Below 100T (According to Model)
Structure
|
Normally-closed, spring apply
Safety
|
Limit switch interlock + manual release
Standard
|
T/CCTASH 002-2022

    Introduction

    The TZJ rail clamp consists of a mechanical brake unit (springs, beam, links, clamps) and a hydraulic station. During normal operation, hydraulics open the clamps for free travel; on release, springs automatically clamp the rail to brake. The floating clamp structure offers ±30mm horizontal and vertical compensation for good centering. A limit switch interlocks with the travel mechanism, and the station’s motor, solenoid valve, and manual pump allow manual release on power loss. The main unit can be separated from the hydraulics or top-mounted to save space and ease installation.

    Our Advantage

    Normally-closed, spring-applied; auto clamps on power/hydraulic failure, preventing wind-driven runaway.

    Floating clamps with ±30mm horizontal/vertical compensation self-center for even, reliable gripping.

    Limit-switch interlock with travel mechanism prevents crane movement unless properly clamped/released.

    Manual pump enables clamp opening on power loss, convenient for maintenance and emergencies.

    Wear-resistant steel jaws and compact design; detachable hydraulics save space and suit harsh outdoor use.

    Specification

    ModelAnti-slip Force (kN) Motor Power (kW)Rated Pressure (MPa) Suitable Crane Weight (kg)
    TZJ-75751.511≤ 50T—
    TZJ-1201201.512≤ 50T—
    TZJ-1251251.512≤ 100T≈ 260
    TZJ-1501502.212≤ 100T—
    TZJ-1601602.214≤ 100T—
    TZJ-2502503.014 – 16BEM / Large Gantry Crane—

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