What is the difference between a bearing puller and a bearing heater?

First of all, bearing pullers are divided into power-frequency pullers and medium-high frequency pullers according to different frequencies. Power-frequency bearing pullers are mainly used for disassembling bearing inner races. This disassembly tool has relatively limited applications. Its limitation lies in the fact that it can only disassemble bearing inner races. For bearings where the inner and outer races are inseparable, the bearing needs to be broken down, with only the inner race retained. This working condition is mainly for disassembling the bearing to protect the journal. Medium-high frequency pullers can also only disassemble bearing inner races; however, they can simultaneously disassemble metal ring-shaped workpieces such as couplings and gears.

Bearing heaters generally refer to tools used for heating and installing bearings. In a strict sense, bearing pullers are also a type of bearing heater. Due to their relatively clear purpose, they have an independent naming convention. Heaters used for heating and installing bearings are also divided into power-frequency heaters and medium-high frequency heaters based on frequency. The difference between these heaters and pullers is that power-frequency heaters can only be used for heating and installation, not for disassembly; whereas power-frequency bearing pullers can be used for heating and installing bearing inner races of the same specification that have been disassembled. As for this most essential difference, medium-high frequency bearing heaters and pullers have basically the same uses.