80397839a

BEARING, SPHERICAL, ROLLER

In Stock

The 803 978 39A BEARING, SPHERICAL, ROLLER is a crucial component within the drifter's rotation unit. It is designed to support rotating shafts under heavy radial and axial loads, ensuring smooth power transmission and correct alignment for effective drilling performance.

Quantity:

Description

Full Technical Description

803 978 39A BEARING, SPHERICAL, ROLLER This roller bearing is typically located within the gearbox or rotation mechanism of the rock drill. Its primary job is to carry the heavy loads placed on the drive shafts while allowing them to spin with minimal friction. By supporting these components, it ensures that torque is delivered smoothly from the rotation motor to the drill steel.

Proper function of this bearing is directly linked to the drill's reliability and performance. When a bearing starts to wear, it can cause misalignment of the drive, leading to reduced penetration rates and premature wear on the shank adapter and chuck. A complete failure can seize the rotation unit, causing significant operational downtime and potentially damaging expensive gears and shafts.

Common symptoms of a failing bearing include a grinding or whining noise from the drifter, excessive heat, or noticeable wobble in the drill string. During maintenance, check for any roughness or play. Always use a proper press and correct fittings for installation to avoid damaging the new bearing, which can severely shorten its operational life.