NTN BNT909
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
33800 RPM
Limiting Speed - Grease
16700 RPM
Configuration
One
Factor
10.4
Static Load Rating
9200 N
Dynamic Load Rating
13200 N
Enclosure
Open
Operating Temperature Range
-40 to 120 ºC
Dimensional Specifications
d
45.000 mm
D
68.000 mm
B
12.000 mm
d1
52.100 mm
d2
49.100 mm
D1
60.900 mm
r
0.600 mm
r1
0.300 mm
Contact Angle
15 º
a
13.600 mm
da min
49.500 mm
db min
48.000 mm
Da max
63.500 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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