KMFS Replacement Linear Ball Bearings for Vantaedge / Sensei (2 pcs)

Product detailed description

The set of two four-row double linear bearings for KMFS Vantaedge and Sensei sharpening systems expands the precision of guiding moving components during knife sharpening at a constant angle. The construction utilizes a multi-row ball arrangement that increases movement stability and reduces micro play under load. The four-row linear bearing design supports smoother guide movement and more precise control of the sharpening arm.

Manufactured to ABEC5 tolerance standards, the bearings provide higher machining precision of the raceways and more even load distribution during movement. This standard is commonly used for components requiring smooth operation and low rolling resistance. Hardened outer races combined with hardened steel balls increase wear resistance and extend service life during long-term use of the sharpening system. The combination of hardened raceways and precisely guided balls minimizes vibration and movement irregularities during sharpening.

The polymer ball-retaining cage ensures stable positioning of the rolling elements and reduces mutual contact during faster movement. Rubber sealing wipers protect the internal bearing area against fine abrasive dust, metal particles, and debris generated during sharpening. As a result, the movement remains smooth even during regular workshop use. Protective sealing wipers significantly improve resistance against abrasive wear inside the linear guidance system.

The bearings contain only a protective storage oil intended for corrosion prevention during transport and storage. Before first use, applying a high-quality low-viscosity lubricant such as FP-10 or a similar oil designed for fine mechanical systems is recommended. Proper lubrication supports smooth operation, reduces friction, and minimizes movement noise. Correctly lubricated linear bearings have a major impact on sharpening precision and overall operating comfort.