Precision ball bearings in the S9912Y series are made of 440C stainless steel with ABEC 5 or 7 tolerances and are available in various shield configurations. The 1238 variant has a 0.375-inch bore, 0.500-inch outer diameter, and 0.156-inch width, with a dynamic load rating of 63 lbf and a static load rating of 190 lbf. It features a double-shielded design (Fig. 3) and is compatible with oil lubrication per MIL-PRF-6085 or grease per MIL-PRF-23827C.
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 | Ball Bearings |
| Product Number | S9912Y-G1238FS2 |
| Product Name | 440C Stainless Steel/ABEC 7 Ball Bearing Lubricated with Oil (MIL-L-6085A) |
| Application | Pump |
| Material / Plating | Stainless Steel |
| Bearing Class | ABEC 7 / Class 4 / P4; 440C Stainless /ABEC 7 |
| Features | Flanged |
| Design Units | Inch |
