Railway brake slack adjuster can be widely used in fundamental braking devices of various wagons, whose design conforms to the UIC standard. In braking, the slack adjuster can extend or shrink with the change of the shoe clearance, so as to maintain the brake cylinder piston within the scope of specified stroke and keep normal clearance between the brake shoe and the car wheel, thus ensuring the braking force of the car and improving safe operation.
| Main Technical Parameters | ZTI250 | ZTI450 | ZTI600 |
| Maximum adjusting scope | 250mm | 450mm | 600mm |
| Maximum allowable tension | 78.4kn | 78.4kn | 78.4kn |
| Maximum length after installation of the slack adjuster | 1420mm | 2018mm | 2566mm |
| Minimum length after installation of the slack adjuster | 1170mm | 1568mm | 1966mm |
| Once maximum contraction of screw | 60mm | 60mm | 135mm |
| Once maximum extension of screw | 30mm | 30mm | 30mm |
| Mass of slack adjuster proper | 25kg | 30kg | 44kg |
ZTI slack adjuster is composed of two parts – the proper and the control. The proper mainly consists of the cylinder assembly, sleeve assembly, guide nut spring case assembly, front cover, screw, outer sheath, spring, pull rod, etc. The control consists of the joystick and the joystick head.
1) Keep the clearance between brake shoe and wheel normal
2) It has two-way adjustment function
3) It has a compact structure and reliable self-locking mechanism
4) Ensure that the vehicle braking force does not decay
5) Ensure driving safety
6) Durable and easy to install
