Bearing show: Precision Deep Groove Ball Bearings(EMQ Bearings) 693ZZ 3*8*4mm
RINGS & BALLS vacuum degassed, high carbon chromium bearing steel GCr15 is the standard material for precision bearing rings and balls. The material has uniform specification as AISL 52100(America)DIN100 Cr6(German), JISSUJ2(Japan)
These deep-groove ball bearings are suited to parts of devices that require high-speed rotation, low-friction torque and low vibration/noise in order to make such devices smaller, lighter-weight and thinner.
Corresponding designation equivalent Gcr15
Ⅲ. Vibration and Noise
According to ralated standard, the vibration noise(dB) of "DAW" bearing for their vibration under acceleration
and divided into four groups:Z1,Z2,Z3,Z4.
Also the bearing can be divided into four groups in according to vibration speed" V1,V2,V3,V4.