XCB71909 - CDLR - T - P4S - ULis a super-precision spindle angular contact ball bearing. This type of bearing is widely used in CNC machines and other precision equipment.
The detailed technical data are as follows:
Type: Super-precision spindle angular contact ball bearing
Inside diameter (d): 45 mm
Outside diameter (D): 68 mm
Thickness (B): 12 mm
Basic dynamic radial load rating (Cr): 19100 N
Basic static radial load rating (Cor): 10700 N
Radial fatigue limit load (Cur): 820 N
Limiting speed (grease lubrication): 28000 r/min
Limiting speed (minimum quantity oil lubrication): 45000 r/min
Mass: 0.107 kg
Contact angle (α): 15°
Here is the understanding of the prefix and suffixes of the bearing number XCB71909 - CDLR - T - P4S - UL
XCB: Represents a high-precision angular contact ball bearing with ceramic balls, suitable for high-speed operation scenarios with a longer service life.
CDLR: Indicates the bearing's contact angle and external form, the contact angle is 15°, and it can be directly lubricated via integral O-rings.
T: Cage type, stands for phenolic resin outer ring centred cage, which has good high-speed performance and stability.
P4S: Denotes the high-precision grade, meeting the precision requirements of high-end spindle equipment for rotation accuracy.
UL: Related to the bearing arrangement and preload, meaning the single bearing can be used by any arrangement, and with a light preload.