Unidirectional Instantaneous Safety Gears

Unidirectional instantaneous safety gear is designed for elevator systems operating at speeds up to 0.63 m/s. In the event of overspeed or uncontrolled downward movement, it engages with the guide rails and brings the elevator car to a safe stop, supporting passenger safety and system protection.


Unidirectional instantaneous safety gears CE certified

> CE certified and compliant with TS EN 81-50

> Rigid steel body structure

> Heat-treated pin locking mechanism

> Easy installation and adjustment

Product Features

TMS Lift instantaneous safety gears are CE certified and compliant with TS EN 81-50 requirements. The design includes a rigid steel body structure to maintain mechanical integrity under load. A heat-treated pin locking mechanism supports secure engagement behavior and durability of the locking interface.

The product range includes two models: the T-3 safety gear for loads up to 3,379 kg and the T-4 heavy-duty safety gear for high load requirements up to 16,026 kg.

The design has been developed to allow easy installation and adjustment.

See the “Instantaneous Safety Gear Models” section for available models.

Instantaneous Safety Gear Models

Single-direction instantaneous safety gear T-3 for 16 mm guide rail, max load 3379 kg

Model T—3

Rail width: 16 mm
Max. load: 3,379 kg for pair
Weight: 3 kg

heavy-duty Instantaneous safety gear T-4 for 16-19 mm rail width

Model T4

Rail width: 1619 mm
Max. load: 16,026 kg for pair
Weight: 9 kg

Instantaneous Safety Gear — Selection Guide

Select the safety gear by guide rail width, and verify rated speed and permitted load against the model specification:

  • Rail width compatibility: choose the model that matches the guide rail width used in the installation.
    • T-3: rail width 16 mm
    • T-4: rail width 16–19 mm
  • Speed verification: max. 0.63 m/s for the listed models.
  • Load verification: confirm the permitted load capacity on the selected model:
    • T-3: max. 3,379 kg for pair
    • T-4: max. 16,026 kg for pair
  • Compliance: models are CE certified and compliant with TS EN 81-50 (Module B + C).

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