Tapered roller bearings 32216 nsk roller bearing
Note: the manufacturer is different, bearing type (code) of the presentation will be different, such as 608 z = 608 zz = 608-2 z = R2280ZZ = MR608Z = RV822, etc., are the same size 8 * 22 * 7 (608 mm) metal bearing cover, please bearing size as the main basis when place an order.
Bearing level basically has: common class, motor, high-quality goods, different grade, the price is different also, please according to their own needs to selective purchase! For details, please contact me.
1. Regular grade: national standard level of basic P0.Dimension precision is less than + / - 0.05 mm, of less than 1000 RPM, is suitable for low speed, low demand of environment.Such as: low speed transmission devices, castor, buggies, toy car, etc.
2. Motor, gb P0Z2 above.Dimension precision is less than + / - 0.01 mm, feel is smooth, speed is less than 20000 RPM, low noise, long service life.Model is suitable for motor, toys, automobile, electric tools, pneumatic tools, telecommunications equipment, fitness equipment, sports equipment, etc.
More than 3. The boutique, gb P6.Dimension precision is less than + / - 0.005 mm, feel is smooth, speed is more than 20000 RPM, low noise, long service life.Suitable for high speed motor, high speed model, instruments and meters, there is a requirement for high precision equipment, high-end toys field.
Bearing material basically has: iron, carbon steel, bearing steel, stainless steel, plastic, ceramic and other new materials.
1. The iron and steel material: hardness is low, product precision and poor stability, short service life.The quality is poor, our shop will not be selling.
2. The bearing steel is qualitative, also known as chrome steel, steel grades: GCr15 is the international special steel bearing industry standards.With AISL52100 (us), DIN100Cr6 (west), BS535A99 (UK) belong to the same steel, etc.With long life, high precision, low calorific value, recommend suite, high rigidity, low noise, high abrasion resistance and other characteristics.Widely used in high speed motors, auto industry, fitness equipment, instruments and meters, precision equipment and other fields.
3. The stainless steel material: the default is stainless steel 440 c (magnetic) material is bearing steel industry environmental protection standards, has the waterproof, rust and corrosion resistance, strong acid and alkali resistance, stability, free maintenance, long service life, not the characteristics of rust.Widely used in food machinery, medical equipment, instruments and meters, high-end products, high-grade fishing gear, the line wheel, high-end toys.Buyers, please do not use magnetic to judge the merits of the stainless steel bearing.Not rust is the absolute principle.
4. The non-magnetic stainless steel bearing 304: the alkali resistance is better than 440 c stainless steel material.But because the material properties, hardness is low, feel of its products and the quality is poorer, appearance is only suitable for low speed and low load, cannot be used in motor, generally do not do industrial rolling bearing using raw materials.
5. Plastic and ceramic and other material: mainly used in special areas such as insulation, non-magnetic, specific can refer to the store communication area.
Please buyer according to the actual need to choose a suitable bearing, if you have any question, please contact me directly.