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Inner bearing pullers: what you need to know

Inner Bearing Pullers are special tools designed for dismantling bushings, bearings, crankshaft couplings and other spares located in deep grooves and hard-to-reach places.

What are the types of inner bearing pullers?

By the design of the gripping part:

• With a collet design. Used for removing parts gripping the external collar if there is very little space behind them.
• With a claw design. Provide a tight grip. However, they require some space behind the element.
• Blind housing pullers. Intended for dismounting parts with an interference fit on both internal and external rings. Two opposed adapters fitted with ball-shaped thickenings are inserted between the external and internal bearing collars. When they are rotated 90 degrees, they grip the bearing race.

By operating principle:

• With a power bolt. The design of these tools features cross arms with a rod. As the screw is being turned, the bearing comes out together with the puller.
• With a slide hammer. Comprise a rod with a hammer sliding along it and an attachment point. The spare is dismounted due to shock impulses. These tools are excellent for removing deep set or stuck car parts.

Tips on using inner bearing pullers.

The succession of steps when using tools of a different design might differ. For example, working with blind housing pullers requires removing the seal and drilling bearing separator first. The more detailed information you can get from the equipment instructions.

When performing the works, make sure that the rod of the cross arms or the shaft of the hammer were at right angles to the body of the spare you鈥檙e dismounting. The incorrect position of the tool can lead to its failure, damage the part or its seat.

Before you start to turn the screw or use the hammer, it is important to make sure that the claws are securely fixed to prevent the tool from slipping off.

While performing the works it is necessary to distribute evenly the force applied to the inner bearing puller in order not to damage the spare we dismount and its seat.

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