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Selection of bearings

Writer: admin Time:2021-03-27 09:25 Browse:

The market requirements of all kinds of mechanical devices and instruments using rolling bearings are increasingly strict, and the conditions and performances required for bearings are increasingly diversified. In order to select the most suitable bearing from a large number of structures and sizes, it needs to be studied from various angles. When selecting bearings, generally, the bearing structure is determined by the arrangement, installation and disassembly of bearings as shafting, the allowable space, size and market of bearings. Secondly, the bearing size is determined by comparing the design life and durability limit of various machines using bearings. When choosing bearings, the fatigue life of bearings is often considered only, and the life, wear and noise of lubricating grease caused by the aging of lubricating grease also need to be fully studied. Moreover, according to different purposes, it is necessary to select bearings with special design requirements for accuracy, clearance, cage structure, grease, etc. However, there is no certain order and rule in selecting bearings. The priority should be given to the conditions, performance and the most relevant matters required by bearings, which is especially practical.

○ required conditions and performance of bearings

○ service conditions, environmental conditions

All dimensions of bearing installation part

○ space allowed for bearings

Load size and direction

○ vibration and impact

Rotation speed, limit speed of bearing

○ inclination of inner and outer rings

Fixation in axial direction and bearing alignment

The difficulty of loading and unloading

○ noise, torque

○ rigidity

Market and economy

Determine bearing structure and arrangement

Service machinery and design life

○ equivalent dynamic load or equivalent static load

Rotation speed

○ allowable static load factor

Allowable axial load (in case of cylindrical roller bearing)

Determine bearing size

○ accuracy of rotary pendulum

High speed rotation

○ torque variation

Determine bearing accuracy class

○ coordination

Temperature difference between inner ring and outer ring

Rotation speed

○ inclination of inner and outer rings

○ preload

Determine (internal) clearance

Rotation speed

○ noise

Use temperature

Determine cage shape and material

Use temperature

Rotation speed

○ lubrication method

Sealing method

Maintenance

Determine lubrication method, lubricant and sealing method

○ loading and unloading sequence

Tool card mold

Installation related dimensions

Determine dimensions related to installation

Determine handling method

Bearing and parts around the bearing

Final specification
 

Changzhou HuanNing Bearing Co., Ltd

Address: NiuTang Town, Changzhou City, Jiangsu Province, P.R. 213168,China

Tel: 0086-519-88521389

Fax:0086-519-88527389

Mobile Phone:+86-18761171389

Linkman: Mr. LEE

E-mail: czhn@czhnzc.com

 

CONTACT US

Linkman: Mr. LEE

Phone: 18761171389

Tel: 0519-88521389

Email: czhn@czhnzc.com

Add: No.5, road 5, Luxi Industrial Park, Niutang Town, Wujin District, Changzhou City

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