Item # BNT212, Single Angular Contact Ball Bearings for Motors and Lathes On NTN Bearing Corp. of America

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Technical Specifications

Type	N/A Main Spindle Bearing
Bore Type	N/A Round
Material	N/A High Carbon Chrome Steel
Cage Type	N/A Machined
Cage Material	N/A Phenolic Resin
Ball Material	N/A Steel
Limiting Speed - Oil	N/A 21800 RPM
Limiting Speed - Grease	N/A 11000 RPM
Configuration	N/A One
Factor	N/A 9.5
Static Load Rating	N/A 7300 lbf32500 N32.50 kN
Dynamic Load Rating	N/A 11000 lbf49000 N49.00 kN
Enclosure	N/A Open
Operating Temperature Range	N/A -40 to 250 ºF-40 to 120 ºC

Dimensional Specifications

Open Image Single Angular Contact Ball Bearings for Motors and Lathes - Dimensions
d	N/A 2.3622 in60.000 mm
D	N/A 4.3307 in110.000 mm
B	N/A 0.8661 in22.000 mm
d1	N/A 3.0315 in77.000 mm
d2	N/A 2.7638 in70.200 mm
D1	N/A 3.7953 in96.400 mm
r	N/A 0.0591 in1.500 mm
r1	N/A 0.0394 in1.000 mm
Contact Angle	N/A 15 º
a	N/A 0.8976 in22.800 mm
da min	N/A 2.6969 in68.500 mm
db min	N/A 2.5787 in65.500 mm
Da max	N/A 3.9961 in101.500 mm
ras max	N/A 0.0591 in1.500 mm
r1as max	N/A 0.0394 in1.000 mm
Double Row Width	N/A 1.7323 in44.000 mm
Triple Row Width	N/A 2.5984 in66.000 mm
Quadruple Row Width	N/A 3.4646 in88.000 mm