11 Primagra - Bearings, Belts, Inductors, Oil retainer rings, Grease fillers, Bearing pullers

Bearings - Deep groove bearings - Super precision double row cylindrical roller bearing

Description

 NNU–cylindrical roller bearing, double row, ribs on outer ring, inner ring ribless

 NN – cylindrical roller bearing, double row, ribs on onner ring, outer ring ribless

Suffixes

Features

Standard design

Special design

Internal design

 Contact angle α = 0ᵒ

 A –modified  internal construction

-

External design

 K- tapered bore ( taper 1:12 )

 S –lubrication groove and lubrication holes in outer ring

-

Cage

 M –solid brass cage, roller quided

-

Sealing

-

-

Tolerance class

 SP – special precision

 UP – ultra precision

Radial internal clearance

 C1NA – standard radial internal clearance for SP or UP precision, are not especially marked, the bearing rings are not interchangeable

 C2- radial clearance larger than C1

 R40.50 – individual radial clearance

Applications

 In machine tools building, they provide radial support for the main spindle

Series NNU49; NN30

 

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Bearings - Deep groove bearings - Super precision double row cylindrical roller bearing

Product Info


(exe: 6205, NUP302, 32202)

exe: TIM, FAG, URB, NSK

mm

mm

mm

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