NTN BNT908
Single Angular Contact Ball Bearings for Motors and Lathes
(BRAND)：NTN
(Availability)：In Stock
Technical Specifications
Type
Main Spindle Bearing
Bore Type
Round
Material
High Carbon Chrome Steel
Cage Type
Machined
Cage Material
Phenolic Resin
Ball Material
Steel
Limiting Speed - Oil
37500 RPM
Limiting Speed - Grease
18500 RPM
Configuration
One
Factor
10.4
Static Load Rating
7300 N
Dynamic Load Rating
10700 N
Enclosure
Open
Operating Temperature Range
-40 to 120 ºC
Dimensional Specifications
d
40.000 mm
D
62.000 mm
B
12.000 mm
d1
47.000 mm
d2
44.400 mm
D1
55.000 mm
r
0.600 mm
r1
0.300 mm
Contact Angle
15 º
a
12.900 mm
da min
44.500 mm
db min
42.500 mm
Da max
57.500 mm
ras max
0.600 mm
r1as max
0.300 mm
Double Row Width
24.000 mm
Triple Row Width
36.000 mm
Quadruple Row Width
48.000 mm
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