Difference between plain bearing and roller bearing

One: roller bearing:

1. The processing of steel balls, the processing of stainless steel balls also varies according to the state of the raw materials. The processes before the frustration or the photosphere can be divided into the following three types. The processes before the heat treatment can be further divided into the following steps. Two kinds of processing, the whole processing process is: stainless steel bar or wire cold punching (some bars need to be punched and annealed after cold pressing) frustration, rough grinding, soft grinding or photosphere heat treatment hard grinding fine grinding or grinding The final inspection group is rust-proof and packaged into the warehouse.


2. The processing of the ferrule: The processing of the inner and outer rings of the bearing varies according to the raw material or the form of the blank. The process before the machining can be divided into the following three types. The whole processing process is: bar or pipe material (Some bars need to be forged and annealed, normalized) Car processing heat treatment Cylindrical grinding processing or polishing parts final inspection anti-rust storage (to be combined with the package)

3. Processing of the cage The processing of the cage can be divided into the following two categories depending on the design structure and raw materials:

(1) Sheet → shear → punching → hot press stamping forming → shaping and fine machining → ultrasonic cleaning machine pickling or shot peening or stringing → final inspection → rust prevention, packaging → storage (to be combined )

(2) Processing of the solid cage: The processing of the solid cage varies according to the raw materials or the gross damage. The following four types of blanks can be divided into the following processing: The bar is Pipe, forgings, castings, inner diameter, outer diameter, end face, chamfering hole (or pull hole, boring), pickling, final inspection, rust prevention, packaging, storage, and assembly.

4. The processing of the roller during the processing of the roller varies according to the raw materials. The process before the heat treatment can be divided into the following two types. The whole processing process is as follows: bar processing or wire cold rolling, string ring and soft grinding Heat treatment string soft point rough grinding outer diameter rough grinding end face end grinding end face fine grinding outer diameter final grinding outer diameter final inspection group anti-rust, packaging into storage (to be combined with the package).

Two: plane bearing:

Planar bearings consist of a planar cage assembly with needle bearings or cylindrical rollers and a flat washer. Needle bearings and cylindrical rollers are held and guided by the planar cage. When used with different series of DF planar bearing washers, many different combinations are available for bearing configurations. The use of high-precision cylindrical rollers (needle rollers) increases the contact length, allowing the bearing to achieve high load capacity and high stiffness in a small space. Another advantage is that the gasket can be omitted if the surface of the adjacent part is suitable for the raceway surface, and the cylindrical surface of the needle roller and the cylindrical roller used for the DF plane needle roller bearing and the flat cylindrical roller bearing is The profiled surface reduces edge stress and increases service life.

The flat needle roller and cage assembly are the main components of a flat bearing. The needle is held and guided by the radially arranged pockets. The cage profile has a specific shape and is formed from a hardened steel strip. The small size cage is made of industrial plastic.

The high-precision needle roller diameter grouping tolerance is 0.002mm, ensuring uniform load distribution. The flat needle roller and cage assembly is guided by a shaft. Thus, a relatively low peripheral speed can be obtained even if the surface is guided at a high speed.

A particularly space-saving support can be obtained if the adjacent part surface is designed as a raceway surface to dispense with the gasket. If this solution cannot be implemented, the AS series washers made of thin-walled steel can also be compact in design with sufficient support.

The bearing consists of a flat cylindrical roller bearing and cage assembly, a bearing housing locating ring GS and a shaft positioning WS. The 893, 874 and 894 series of flat cylindrical roller bearings can be used for higher loads.