Description

Deep Groove Ball Bearing Rubber Seal

LLU, synthetic rubber seal (contact type).

About NTN Deep Groove Ball Bearing

Deep groove ball bearings are very widely used.
A deep groove is formed on the inner and outer ring of the bearing enabling the bearing to sustain radial and axial loads in either direction as well as the complex loads which result from the combination of these forces.
Deep groove ball bearings are suitable for high-speed applications.
When two or more deep groove ball bearings are used in combination and mounted adjacent to each other a duplex set (D2) should be used.
Duplex bearings (D2) utilize controlled tolerances to more evenly distribute the loading between the individual bearing rows which improve the overall performance of the assembly.
In addition, to unsealed and unlubricated "open" bearings, NTN provides deep groove ball bearings that are pre-lubricated with grease and enclosed by seals or shields.
"Lubrication" for a list of some of the greases which can be used.

Specifications

AIMS SKU A0153950

Brand NTN

Model Number 6903LLU/NTN

D1 Max. 28.7

Outer Diameter D (mm) 30

rNas Max. 0.3

ras Max. 0.3

CZ Min. 0.9

CY Max. 1.9

Dx (approx.) 33.5

Da Max.4 20

F Max. 0.85

D2 Max. 32.8

Ro Max. 0.25

B Min. 0.95

A Max. 1.3

Bore Diameter x Outer Diameter x Width (mm) 17 x 30 x 7

Allowable Speed 14000

F0 14.7

Fatigue Factor Load Limit Cu Kn 0.202

Basic Load Rating Static C0r Kn 2.58

Basic Load Rating Dynamic Cr Kn 5.15

rNS Min. 0.3

rs min1 0.3

Width B (mm) 7

da Max. 28

da Min. 19

Bore Diameter d (mm) 17

Type Deep-Groove Ball Bearings
Series 6000 Series

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