KRV Relubricatable Stud Track Roller

Product Details

A KRV roller normally develops an even contact band around its outside surface. If the polished band appears only near one edge, the bearing may be following a tilted track or operating under an offset force. Replacing the roller alone will not remove the cause of that wear.

Flat spots, dents or regularly spaced marks point to a different problem. These may be produced by track joints, repeated stopping under load or contamination trapped between the roller and its running path. The mating surface should be inspected whenever the bearing is removed.

Grease reaches the internal rolling area through the stud. During maintenance, lubricant should enter without unusual resistance. A blocked passage, hardened grease or a damaged fitting can prevent fresh grease from reaching the working surfaces.

Product Description

Inspection should begin before the old bearing is discarded. Record the complete marking, roller diameter, roller width, stud thread, usable thread length and shoulder position. Bearings with similar outside dimensions may still require different mounting holes or fasteners.

After cleaning, rotate the outer ring by hand. Roughness, tight sections or noticeable internal movement can indicate that the bearing has reached the end of its useful condition. Blue or dark surface discoloration may also suggest excessive heat, insufficient lubrication or persistent sliding against the track.

The condition of the removed lubricant provides additional information. Metallic particles suggest internal wear, while water, dust or process residue shows that the operating environment is reaching the bearing. The replacement specification should therefore include the required sealing arrangement rather than relying only on the main KRV designation.

Service Reference

FAQ

Why must the lubrication point be considered during machine design?

Maintenance personnel need enough access to introduce grease without removing the bearing or surrounding machine parts.

Can the roller pass repeatedly over a jointed track?

It can operate on an assembled track, but raised joints, gaps and sharp edges should be corrected. Repeated impact can damage both the roller surface and the track.

Does the profiled outer ring compensate for incorrect installation?

It can reduce edge stress caused by small alignment deviations. It cannot compensate for severe skew, an uneven mounting face or a bent stud.

Can the KRV carry continuous axial load?

Its main duty is radial loading against a track. Small axial forces caused by slight skew may occur, but continuous thrust requires the installation and bearing selection to be reviewed.

What information is required before ordering?

Provide the complete bearing designation, stud thread, roller dimensions, sealing preference, applied load and operating environment.

Can a standard bearing be ordered individually?

We accept orders as small as a single piece for standard sizes. Please contact us for delivery lead time based on order quantity.

About Us

Lishui Guangyuan Industry & Trade Co Ltd supplies cam followers, track rollers and related motion components. Selection can be checked against an existing bearing designation or the customer's mounting drawing.

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