Select Bearing grades:Motor class or Specialty class
Inner Diameter:20mm
Outer Diameter:35mm
Thickness:8mm
Package Includes:5pcs bearings
Feature:
Bearing grades mainly include :ordinary grade,motor grade,Specialty grade.
1. ordinary class:national standard P0 class。Dimensional accuracy less than ±0.05mm,Speed less than 1000rpm,Suitable for low speed, low requirements. Such as: low-speed transmission equipment,casters, baby carriages, toy cars, etc.
2. Motor class:national standard P0Z2 class above。Dimensional accuracy less than ±0.01mm,feels smooth , Speed less than 20000rpm, Low noise and long service life. Suitable for motors, toy models, automobiles, power tools, pneumatic tools,telecommunications equipment,fitness equipment, sports equipment, etc.
3. Specialty class: national standard P6 class above。 Dimensional accuracy less than ±0.005mm [can replace imported] ,feels smooth , Speed is greater than 20000rpm,Low noise and long service life.。Suitable for high-speed motors,high-speed models,instrumentation, precision equipment,high-end toys and other areas with high requirements.
Bearing materials mainly include : iron sheets, carbon steel, bearing steel,stainless steel, plastic, ceramics and other new materials.
1. [iron sheets] and [carbon steel] material:Low hardness, poor product accuracy and stability, and short service life。
The quality is very poor,the store will not sell.
2. [Bearing steel] material:Also known as [chrome steel],Steel grade: GCr15 is a special steel for international bearing industry standard
3. [Stainless steel] material:Default is stainless steel 440C material (with magnetic) It is an environmentally friendly standard steel for bearing industry。has the waterproof, rust-proof,anti-corrosion, acid and alkali resistance, strong stability, maintenance-free, long service life and no rust。Widely used in food machinery,Medical equipment,instrumentation,High-end crafts,high-end fishing gear,fishing reels,high-end toys, etc。
Please do not use magnetics to judge the pros and cons of stainless steel bearings.
4. [Plastic] and [ceramic] and other materials:Mainly used for insulation,Non-magnetic,etc.
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Type:16003/20 Material:Bearing steel Select Bearing grades:Motor class or Specialty class Inner Diameter:20mm Outer Diameter:35mm Thickness:8mm Package Includes:5pcs bearings