NTN BNT904DTUP
Double 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
34000 RPM
Limiting Speed - Grease
25000 RPM
Seal Type
None
Seal Material
None
Precision
Special Precision
Configuration
Two
Factor
9.7
Static Load Rating
6000 N
Dynamic Load Rating
9050 N
Enclosure
Open
Weight
0.072 kg
Operating Temperature Range
-40 to 120 ºC
Dimensional Specifications
d
20.000 mm
D
37.000 mm
B
9.000 mm
2B
18.000 mm
d1
25.500 mm
d2
23.500 mm
D1
31.400 mm
r
0.300 mm
r1
0.150 mm
Contact Angle
15 º
da min
22.500 mm
db min
21.500 mm
Da max
34.500 mm
ras max
0.300 mm
r1as max
0.150 mm
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