TIMKEN bearing requirements for lubricants

1. Basic requirements for lubricants from TIMKEN bearings

There are usually the following basic requirements for lubricants:

(1) It has sufficient lubricating effect, which can reduce the friction of TIMKEN bearing and inhibit the harmful wear process in TIMKEN bearing. The frictional resistance is small and the anti-wear ability is large.

(2) Preventing corrosion of TIMKEN bearings, which itself does not cause corrosion, deterioration or deformation of TIMKEN bearing components (such as copper cages, rubber seals, etc.).

(3) It is possible to maintain the necessary lubricating performance within the range of the upper and lower limits of the specified operating temperature, and the chemical composition is stable and the viscosity does not change much.

(4) A sufficiently thick oil film can be established within the range of the upper and lower limits of the specified working speed; it is clean, free of impurities, and has good defoaming properties.

(5) Physical properties and chemical properties are stable enough during the required working period or during the inventory period, so as not to affect the quality of the use.

(6) Maintenance and maintenance are simple and the attachments are as small as possible.

(7) Under the premise of meeting the above technical requirements, economically strive to save.

2. Additional requirements for lubricants

(1) has a good cooling effect.

(2) It has strong adhesion to the surface to be lubricated, and leakage, dripping or scattering is as small as possible; water separation is good.

(3) Mixing a small amount of impurities (such as moisture) does not affect its performance.

(4) It acts as a seal to prevent water or dirt from entering the TIMKEN bearing.

(5) It is not easy to transmit vibration or reduce noise.

(6) Centralized lubrication can be implemented.

3. Special requirements for lubricants

Under special conditions, the following special requirements must be imposed on the lubricant:

(1) Long life requirements require a particularly long service life of the lubricant.

(2) The requirement of low friction torque requires that the frictional resistance of the lubricant is very low.

(3) The requirements for high temperature resistance are required to withstand high temperatures above 250 °C.

(4) The requirements for low temperature resistance are required to withstand low temperatures below -63 °C.

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Damage, assembly, maintenance and maintenance of NA bearings

Not all damaged bearings can be repaired, but for each damaged bearing, the cause and extent of damage must be evaluated to avoid or reduce re-damage before considering repairing or replacing a new INA bearing. There are many causes of bearing damage, such as improper installation, dirt intrusion or moisture intrusion, which are common causes of early damage in many bearings. Analysis of common causes of damage to INA bearings and corresponding precautions that extend the life of INA bearings.

A. Improper operation:

Improper installation, operation or disassembly may cause deformation or defect of the cage

Precautions: Use appropriate handling, installation and removal tools

B. Insufficient lubrication:

Insufficient or improper lubrication may result in component scratches or severe INA bearing deformation

Precautions: Improve the lubrication system and properly replenish or replace the lubricant at regular intervals

C. Rusty and corrosion:

Contact with water may cause INA bearing components to erode and rust. INA bearings after rust damage may cause spalling during work

Precautionary measures: Regularly check the seal to ensure a good sealing effect and properly store the INA bearing

D. Current:

Powering up the INA bearing as it rotates may result in grooves or nicks. Improper grounding of electrical operations when the INA bearing is stationary can cause minor burns

Precautions: Reduce or avoid current flow through the INA bearing by properly grounding the connections before parts other than the INA bearing.

E. External materials:

Abrasion particles contamination and debris intrusion may cause wear, abrasion and dents on the INA bearing face

Precautions: Remove invading particles and debris, replace lubricant, check sealing system

F. eccentric:

Eccentricity, tilting, or excessive loading can cause geometric stress concentrations or surface spalling

Precautions: Precision machining of INA housings and shoulders

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