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Unit of Measure

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Ordering Options

N/A Contact NTN Customer Relations

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 25700 RPM

Limiting Speed - Grease

N/A 12800 RPM

Configuration

N/A One

Factor

N/A 10.8

Static Load Rating

N/A 2880 lbf12800 N12.80 kN

Dynamic Load Rating

N/A 3450 lbf15300 N15.30 kN

Enclosure

N/A Open

Operating Temperature Range

N/A -40 to 250 ºF-40 to 120 ºC

Dimensional Specifications


Single Angular Contact Ball Bearings for Motors and Lathes - Dimensions

d

N/A 2.3622 in60.000 mm

D

N/A 3.3465 in85.000 mm

B

N/A 0.5118 in13.000 mm

d1

N/A 2.6811 in68.100 mm

d2

N/A 2.5630 in65.100 mm

D1

N/A 3.0276 in76.900 mm

r

N/A 0.0394 in1.000 mm

r1

N/A 0.0236 in0.600 mm

Contact Angle

N/A 15 º

a

N/A 0.6417 in16.300 mm

da min

N/A 2.5787 in65.500 mm

db min

N/A 2.5394 in64.500 mm

Da max

N/A 3.1299 in79.500 mm

ras max

N/A 0.0394 in1.000 mm

r1as max

N/A 0.0236 in0.600 mm

Double Row Width

N/A 1.0236 in26.000 mm

Triple Row Width

N/A 1.5354 in39.000 mm

Quadruple Row Width

N/A 2.0472 in52.000 mm