The technical requirements of the increasingly high bearing

Needle roller bearings are cylindrical roller with a roller bearing, relative to its diameter, roller both thin and long. This is called needle roller. Despite having a smaller cross-section, still has a high load bearing capacity, therefore, suitable for use in special radial space-constrained applications. Needle in the proximal surface contour of the face a little contraction. Results Needle roller line contact with the amendment to avoid damaging edge stresses. In addition to catalogs listed, can be used for general engineering bearings, such as: open Needle roller bearings (1), closed Needle roller bearings (2), needle bearing inner ring (3) with no needle bearing inner ring (4), SKF can also supply all types of needle roller bearings, are:

1, needle continuous frame assembly 2, needle roller bearings without ribs 3, 4 self-aligning roller bearings, combined needle roller / ball bearings 5, combined needle roller / axial ball bearings 6, combined needle roller / cylindrical roller thrust bearings Needle roller bearings Needle roller bearings with a thin needle roller bearings stamping outer ring. Its main feature is the low sectional height and bear higher load capacity. Mainly used in compact, inexpensive and bearings inside the hole can not be configured as a needle roller bearing cage assembly continued raceway. Bearings with bearing box must be installed in an interference fit. If it can save me axial positioning shoulder, retaining ring, and other functions, then the bearings inside the hole can be made very simple and economical. Mounted on the shaft end Needle roller bearings have a bilateral open (1) with unilateral closed (2). Drawn cup base closed end can withstand small axial guiding force.

Needle roller bearings are generally not attached to the inner ring. In the journal can not be hardened with the ground situation, we can adopt inner listed in the table. Hardened steel outer ring with needle roller cage assemblies sustained Needle roller bearings must not separate. Lubricant storage free space can be extended to add lubrication interval. Bearings generally adopt single design. Bearing outer ring with lubrication holes. According to user needs, the shaft diameter greater than or equal to all single 7mm Needle roller bearings can be equipped with an outer ring with lubrication holes.

Needle roller bearings with seals in the seal can not be installed because of space constraints of the occasion, may be given an open-ended or closed end Needle roller bearings with seals. Such bearing equipment polyurethane or synthetic rubber friction seal, which is filled with good anti-corrosion properties of lithium-based grease for operating temperatures from -20 to 100 ℃. A seal bearing inner ring is wider than the outer ring 1mm, this is the bearing in the machine axis relative to the displacement of the bearing box with a little work but also to ensure good seal and prevent injury to the bearing infected. Bearing inner ring lubrication holes are also able to configure the required bearing from the outer or inner supplementary lubrication.