The outer ring has two lubrication holes as the standard form

Y-bearing with eccentric locking 68 Series Ball Bearings is mainly suitable for applications where the rotation direction is inconvenient to fix. On one side of the inner ring of the bearing, there is an eccentric extension that fits with the locking ring. Rotate the locking ring on the extension of the inner ring in the direction of rotation to lock the ring and the bearing to the shaft. Use a flat head (fixing) screw to further fasten the collar to the shaft. SKF can provide two standard series: one is Y-bearing of YET2 series, the inner ring is extended on one side, and strong Superagriseal seals are fitted on both sides.

The eccentric locking ring is coated with a galvanized layer. The standard outer ring has two lubrication holes. The inner ring of YEL2 series Y-bearing extends on both sides. This helps reduce the degree of tilt of the inner ring to the shaft and makes the bearing run more smoothly. These bearings are equipped with sturdy standard Superagriseal seals and one of the following two types of oil retaining rings: oil retaining rings made of ordinary steel, with the designation suffix 2F. Steel plate oil baffle ring with rubber sealing lip (multiple seal), the model suffix is ​​2RF.

The outer ring has two lubrication holes as the standard form. SKF can also provide bearings without refueling holes according to customer requirements. These bearings are indicated by the suffix W. This type of SKF bearings include bearings for metric shafts, with a diameter range of 15-60mm and bearings for inch shafts, with a diameter range of 1/2-215/16 inches.

When cutting high manganese steel, the leading deflection angle should be smaller, which can increase the heat dissipation area of ​​the tool and the strength of the tip, and the secondary deflection angle should not be too large. When choosing cemented carbide tools, generally take κr=25°～45°, κ′r=10°～20°. When the rigidity of the process system is good, take a small value; otherwise, increase the main and secondary deflection angles appropriately. When ceramic tools are used, the entering angle can be larger, generally κr=45°～60°, and κr=60°～90° for fine tuing. (3)