SKF EAZ 80/130C - Adjustable Induction Heater

The adjustable induction heaters EAZ 80/130 are used for frequent dismounting of cylindrical bearing inner rings. Where inner rings are removed infrequently, aluminium heating rings, TMBR series, are also available. For larger cylindrical inner rings normally found in steel mill applications, SKF can supply special EAZ induction heaters.

The tool consists of a circular yoke on which six adjustable yokes are attached. All yokes are made of laminated iron. Each yoke has an induction coil through which an alternating current of 50/60 Hz is fed.

The yokes are pressed against the raceway of the inner ring to be removed. The alternating magnetic fields between the yokes pass through the inner ring and produce eddy currents which cause a rapid heating and expansion of the inner ring which can then be easily dismounted. For remounting, TIH induction heaters with automatic demagnetization are recommended.

All units are equipped with remote control switches, signal lamps for ‘power on’ and ‘overheating’ as well as automatic overheating protection. The connection cable is delivered complete with plug (DIN 49463) and wall-connector with power relay.

Applications:

The heaters are used for dismounting of the various sizes of cylindrical bearing inner rings types NU, NJ and NUP mounted on a shaft with an interference fit up to n6.