NTN 30228
Tapered Roller Set - Metric Series
(BRAND)：NTN
(Availability)：In Stock
(EMAIL)：info@noksbearings.com
Technical Specifications
Type
Tapered Roller Bearing
Bore Type
Round
Material
Through Hardened Steel
Limiting Speed - Oil
1900 RPM
Limiting Speed - Grease
1400 RPM
Style
Cone & Cup
Precision Rating
Class 0
Configuration
One
Lubrication
w/o Oil Hole
e (Axial Load Factor)
0.44
Y2 (Axial Load Factor)
1.39
Y0 (Axial Load Factor)
0.76
Static Load Rating
570000 N
Dynamic Load Rating
420000 N
Enclosure
Open
Operating Temperature Range
-40 to 120 ºC
Dimensional Specifications
d
140.000 mm
D
250.000 mm
C
32.000 mm
B
42.000 mm
a (Effective Load Center)
2.750 mm
r1as max
3.000 mm
T
45.750 mm
r
3.000 mm
R
4.0 mm
da
158.0 mm
db
163.0 mm
Da
236.0 mm
Da min
219.0 mm
Db
237.0 mm
ras max
3 mm
