What is the difference between anti-magnetic bearings and self-lubricating bearings?
Anti-magnetic bearings are a special type of bearing made of non-magnetic materials such as beryllium bronze (low load carrying capacity) and ceramic. This kind of bearing has good mechanical, physical and chemical comprehensive properties, and has high strength, hardness, elasticity and wear resistance after quenching and tempering, and has excellent corrosion resistance in the atmosphere, fresh water and seawater. Anti-magnetic bearings can avoid the harm of magnetic field or earth magnetic field to the bearing, so that the bearing is not magnetized, and the bearing friction torque is stable, so as to ensure the accuracy of the bearing. This type of bearing is usually used in some guidance system software and some instrumentation equipment that require high coordination to ensure its normal operation.
At present, the commonly used anti-magnetic bearing materials mainly include:
Stainless steel: 1Crl8Ni9Ti, 40CrNiAl.
Anti-magnetic steel: 70Mnl8Cr4V2WN, 25Crl8Nil0WN, 7Mnl5Cr2A13WmoV2;
Nickel-copper alloy: NiCu28--2.5-1.5;
Beryllium Bronze: QBe2;
Powder metallurgy materials: YG6, ST60.
The most commonly used of these is Beryllium Bronze QBe2.
In addition, there is a self-lubricating bearing, usually made of stainless steel bearings, with high performance requirements of ceramic materials, and the holding frame is sintered with lubricating materials and base materials (powders). Ceramic bearings are used in harsh environments such as high speed, high temperature, low temperature, strong magnetic field, vacuum, high pressure, etc., with high bearing capacity, small friction coefficient, long life, and self-lubrication.
Anti-magnetic bearings are mainly concerned with avoiding the influence of magnetic fields and maintaining service accuracy, while self-lubricating bearings pay more attention to wear resistance and self-lubricating performance in harsh environments. When selecting bearings, you need to consider the specific working environment and mechanical needs.
If you want to know more bearing information,please contact us :
sales@cwlbearing.com
service@cwlbearing.com
Post time: Aug-07-2025
