The field coil pin in a 2-26 rotary hammer (like the Bosch GBH 2-26) is a small but critical component used to securely fasten or position the field coil within the motor housing. It ensures that the field coil remains in the correct position during operation, enabling the rotary hammer’s motor to function properly.

Here’s what the field coil pin does in the hammer machine:

Secures the Field Coil: The field coil pin keeps the field coil securely mounted inside the motor housing. The field coil is responsible for generating the magnetic field that interacts with the rotor (armature) to create the rotational motion needed for drilling and hammering. If the coil is not held securely in place, it could shift or move, leading to mechanical issues or electrical failures.

Prevents Vibration and Movement: Rotary hammers are subject to intense vibrations during use. The field coil pin helps ensure that the coil doesn’t move or vibrate out of place during operation, preventing potential damage to the motor or electrical system.

Maintains Proper Alignment: For the motor to work efficiently, the field coil must remain precisely aligned with the armature. The field coil pin helps maintain this alignment, ensuring optimal interaction between the magnetic field and the rotating armature.

Without the field coil pin, the rotary hammer might experience alignment issues, leading to poor performance, potential short circuits, or even motor failure.