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Precision Cylindrical Roller Bearing - Double Row with Tapered Bore. Precision Double-Row Cylindrical Roller Bearings utilize a modified cylindrical roller that provides line contact with the inner and outer ring raceways. They are suitable for high speeds and have a high radial load capacity. The rollers are guided by ribs on the inner ring. These bearings are not be able to accept any axial loading, however they will allow some axial movement. The inner and outer rings are separable which may aid in the assembly/disassembly of components. The ‘NN’ Type bearings have three shoulders on the inner ring that retains the rollers and cage. The outer ring has no shoulders. They have a tapered bore and machined brass cage. Radial clearance of tapered-bore bearings can be adjusted during the mounting process. These bearings have high radial rigidity and are used primarily for high-speed, high-accuracy applications such as
main spindle support for lathes, milling machines and machining centers.
features
High radial and impact load capacity. Machined brass cage reduces vibration. Separable components simplify mounting, removal, and can be interchangable in configuration. Low noise. Not suitable for thrust loads. Long life
I.D.
50 mm
Bore Type
Tapered
Inner Ring Material
Steel
Static Load Rating
72500 N
Radial Internal Clearance
C1NA
O.D.
80 mm
Cage Material
Brass
ISO Precision Class
P4
Limiting Speed - Grease
11700 rpm
Rolling Element Material
Steel
Temperature Range [Max]
248 °F
Rows of Balls
Double
Dynamic Load Rating
53000 N
Outer Ring Material
Steel
Seals or Shields
No
Limiting Speed - Oil
13800 rpm
Weight
1.0 LB
EAN or UPC
4991893385762
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