The SKF EAZ 80/130 and EAZ 130/170 adjustable electromagnetic induction heaters are used to remove inner rings of various sizes of cylindrical roller bearings with inner diameters of 80 to 130 mm and 130 to 170 mm, when the fit with the shaft is up to grade n6.
The SKF EAZ series are adjustable electromagnetic induction heaters designed for removing inner rings of cylindrical roller bearings. The heater uses a ring‑shaped magnetic yoke with six adjustable magnetic poles, each equipped with an induction coil that generates a 50/60 Hz alternating magnetic field to heat and expand the bearing inner ring for easy removal. Two size ranges are offered: EAZ 80/130 for inner‑ring diameters 80‑130 mm and EAZ 130/170 for 130‑170 mm.
The manual outlines safety requirements, such as proper grounding, keeping a 5 m exclusion zone around the heater for people with pacemakers or metal objects, and ensuring only qualified personnel perform installation and maintenance. Operating steps include connecting the power cable by a certified electrician, adjusting the magnetic yoke to fit the bearing, activating the heater, and monitoring temperature with a precise thermometer. The device features automatic over‑temperature protection and a remote control for convenient operation. This manual is written in Chinese.
| Power cable plug type | DIN 49463 |
|---|---|
| Weight (EAZ 80/130) | 28 kg |
| Power supply option (EAZ 80/130A) | 2 × 230 V / 50 Hz, 45 A |
| Power supply option (EAZ 130/170D) | 3 × 230 V / 50 Hz, 43 A |
The power cable must be connected to the supply cabinet by a qualified electrical engineer, matching the voltage shown on the heater, and the plug must be securely attached to the cable connector while ensuring the machine is properly grounded.
The heater automatically shuts off and an alarm lamp lights to indicate over‑temperature, after which the unit can be used again once it cools down.
No. The manual requires keeping a distance of at least 5 m from anyone with a pacemaker or metal objects in their body while the heater is operating.