Stainless Steel Needle Roller Bearings

Stainless steel needle roller bearings are made of the stainless steel through the process of the heat treatment and high-precision grinding. They are used in medical equipment, food and packaging machinery, textile and chemical machinery, robots, wind turbines as well as other fields. Stainless steel needle roller bearings are available in materials such as AISI440C, AISI420, AISI304 and AISI316L. According to applications and specific requirements of our clients, the materials for stainless steel needle roller bearings can be well configured.

In some corrosive applications, if the surface of the shaft is suitable as a raceway, drawn cup stainless steel needle roller bearings can be used. These bearings are a kind of small stainless steel needle roller bearings without inner rings. They are easy to install and can be simply pressed into the housing bores. Further axial fixing is not required. The drawn cup stainless steel needle roller bearings are suitable for dealing with extremely high radial forces in the extremely limited space.

Stainless steel needle roller bearings with machined rings have low sectional height and large load ratings. They have solid machined outer rings with high rigidity. They can meet the challenges of wet environments. These stainless steel needle roller bearings can withstand axial displacement. The displacement distance can not be limited by the bearings while using raceways on the shaft. They have a split inner and outer ring design. This structure allows for an interference fit between the shaft and the housing and also facilitates maintenance.

Stainless steel needle roller bearings of such kinds comprise stainless steel drawn cup roller clutches with single or multiple rollers. They are compact and lightweight and can be operated directly on the shaft. They are suitable for transmitting high torque between the shaft and the housing in one way and can move freely in the opposite direction. These stainless steel one-way bearings are more resistant to corrosion than those with the standard bearing steel, and therefore they have a longer service life in humid environments.

Stainless steel needle roller and cage assemblies are self-contained, ready-to-install bearings. They are single or double row units comprising cages as well as needle rollers. Since their radial sections are no greater than the diameters of the needle rollers, needle roller and cage assemblies allow bearing arrangements with a very small radial design envelope to be achieved. They have a very high load carrying capacity and corrosion resistance and are suitable for high speeds and can be easily fitted.

Precision stamped and surface hardened stainless steel needle roller thrust bearings have a low axial section height. They can withstand large axial loads while allowing for smooth rotation in severe applications. Stainless steel washers are permitted on unhardened and unpolished surfaces. There are three main types of needle roller thrust washers, that is, the pressed stainless steel ring type, the machined type for the inner ring and the machined type for the outer ring. Relatively, the latter two stainless steel thrust washers have much higher stiffness and running accuracy.

Stainless steel needle roller thrust bearings are equipped with a form-stable cage which can reliably holds and guides a great number of needle rollers. The stainless steel needle roller cages require ground and hardened surfaces as raceways. They have a low axial section height to support axial forces in one direction. Thrust stainless steel needle roller bearings provide high stiffness in the minimal axial space and can provide excellent performance in high temperature or corrosive applications.

For stainless steel needle roller bearings, inner rings, which are typically combined with needle roller and cage assemblies or drawn cup stainless steel needle roller bearings, are found in applications where the shaft cannot be hardened and ground, or to say, the shaft cannot be used as a raceway. Stainless steel inner rings have precisely machined or ground raceways. When the shaft has a large axial displacement relative to the housing, stainless steel needle roller bearings must be combined with wider inner rings. Stainless steel inner rings have both metric sizes and inch sizes. Under the same conditions of inner and outer diameters, a variety of widths are available.

As rolling elements of stainless steel needle roller bearings, needle rollers can be used in full complement bearing configurations for low speed or oscillating applications in corrosive scenarios. Stainless steel needle rollers are still used for applications where space is limited and high radial loads are required. They can also be used as locating pins and miniature shafts. Compared to bearings with cages, these compact bearing arrangements have a very high load carrying capacity and are economical, provided that the holes in the shaft and housing can be used as raceways (raceways on the shafts as well as in housings).