Bearing size: inner diameter*outer diameter*width=12*28*8 (mm)
Bearing material: bearing steel (special steel for bearings, code GCr15)
Product Details:
Quality grade:our bearings are ABEC-1, ABEC-3, ABEC-5, etc.
1. ABEC-1: The basic level of the national standard. The dimensional accuracy is less than ±0.05mm, and the speed is less than 500rpm, which is suitable for low-speed and low-requirement environments. Such as: low-speed transmission equipment, casters,carriages, cars, etc.
2. ABEC-3: National standard P0Z2 level or above. The dimensional accuracy is less than ±0.01mm, the hand feels smooth, the speed is less than 6000rpm, the noise is low, and the service life is long. Suitable for motors, models, automobiles, electric tools, pneumatic tools, telecommunications equipment, fitness equipment, sports equipment, etc.
3. ABEC-5: National standard P6 or above. The dimensional accuracy is less than ±0.005mm [can replace imports], the hand feels smooth, the speed is greater than 6000rpm, low noise, and long service life. It is suitable for high-speed motors, high-speed models, instruments, precision equipment, high-end and other fields with higher requirements.