The S99B series comprises thin-walled linear bearings with an anodized aluminum body and a bonded Frelon® self-lubricating liner for low-friction motion. The part S99BSCM20F028030 matches the S99B CM20F028030 variant, which has a 20 mm bore, 28 mm outside diameter, and 30 mm length. It supports a maximum load of 6175 N and has a load area of 6 cm². The bore tolerance is +0.043/+0.016 mm for precision and +0.093/+0.066 mm for standard, and an O-ring is required for mounting. The series is designed for low-cost, maintenance-free operation where precise alignment and minimal friction are needed.
A bearing is a device that reduces friction between moving components by preventing metal-to-metal contact while assisting components (shafts, axles, and wheels) to freely rotate around a fixed axis, cutting down on heat generation and the amount of energy that is consumed. By replacing sliding motion with low-friction rolling motion, the life of the rotating components is increased. A bearing also keeps the shaft in the proper position, providing support and alignment and transferring the axial or radial loads to the housing.
The types of bearings that we offer include rolling element bearings, which consist of both ball bearings and roller bearings.
Balls are utilized as the rolling element in ball bearings; a retainer holds the balls in place and allows them to freely rotate. The balls are kept inside channels cut in both the inner and outer races. Because there is no surface contact between the balls and races, precision ball bearings have a lower load capacity for their size than other bearings.
| Stock Drive Products & Sterling Instrument - SDP/SI | |
|---|---|
| Product Category | Linear Bearings |
| Product Number | S99BSCM20F028030 |
| Product Name | 20mm Bore, 30mm Overall Length, Standard Frelon Lined Bearing. |
| Special Bearing Materials | ALUMINUM/FRELON |
