Also known as
NU217ECM/C4
NU217ECM/C4VA301 + VL0241
CategoryCylindrical Roller Bearing Single Row
Weight and Dimensions
Inner (d) MM
85
Outer (D) MM
150
Width (B) MM
28
Inner (d) Inch
3.3465
Outer (D) Inch
5.9055
Width (B) Inch
1.1024
Weight (kg)
2.14
Product Properties
Bore
C - Cylindrical Bore
Seal
No Seal
Cage Type
M - Brass Cage
External Modification
No External Modification
Radial Internal Play
C4 Internal Play (Higher than C3)
Precision
VA - VA301 + VL0241
Heat Stabilization
No Heat Stabilization - Temperatures up to 120 °C
Suffix description
ECOptimized Internal Design Incorporating More And/Or Larger Rollers And With Modified Roller/End Flange Contact
MTwo-Piece Machined Brass Cage, Roller Centered
C4Bearing Internal Clearance Greater Than C3
VA3091Combination of VA301 (Bearing For Railway Vehicle Traction Motors) And
VL0241Aluminium Oxide Coated Outside Surface Of The Outer Ring For Electrical Resistance Up To 1.000v DC)
Product description
The NU217ECM/C4VA3091 SKF is a single-row cylindrical roller bearing with cage. This bearing consists of a solid inner and outer ring with cylindrical rollers in a cage. This cage prevents contact between the cylinder rollers, so this bearing type can support higher speeds than full-complement cylinder roller bearings. Also, single-row cylindrical roller bearings with cages are very rigid and they can take high radial forces. As the inner and outer rings of these bearings can be easily disassembled, they are very easy to install. Applications of single-row cylindrical roller bearings include gearboxes, agricultural machinery, pumps, compressors, and electric motors.
The NU217ECM/C4VA3091 SKF is a single-row cylindrical bearing with NU design. The outer ring of this bearing has two rigid ribs, while the inner ring has none. As a result, NU bearings are only capable of supporting radial forces. This bearing type is commonly used as a floating bearing. Floating bearings allow axial displacement of the shaft relative to the housing in both directions. This is necessary in applications where the shaft material shrinks or expands due to temperature changes (thermal expansion). NU bearings can also be used as support bearings by combining them with HJ angle rings (available separately). Support bearings can support radial forces and also axial forces in a single direction.
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