NTN NNU4921K
Double Row Cylindrical Roller Bearing
(BRAND)：NTN
(Availability)：In Stock
(EMAIL)：info@noksbearings.com
Technical Specifications
Type
Cylindrical Roller Bearing
Bore Type
Tapered
Material
Hardened Alloy Steel
Cage Material
High Strength, 2 piece, Machined Brass
Limiting Speed - Oil
4800 RPM
Limiting Speed - Grease
4100 RPM
Taper
1:12
Precision
ISO Class 0
Tolerance
ISO Class 0 (RBEC 1)
Oil Hole
w/o Oil Hole
Radial Internal Clearance
CN
Static Load Rating
268000 N
Dynamic Load Rating
133000 N
Enclosure
Open
Operating Temperature Range
-40 to 120 ºC
Dimensional Specifications
d
105.000 mm
D
145.000 mm
B
40.000 mm
C
40.000 mm
Fw
118.000 mm
r
1.100 mm
da min
111.500 mm
db min
115.000 mm
Da max
138.500 mm
Db min
136.000 mm
Db max
138.500 mm
ras max
1.000 mm
