Call on 01202 339559

ABIS Miniature and Precision Ball Bearings

With bores of 0.6 to 90mm and precision grades to ABEC 7

Bearing Selector

Inch/Metric Bearing
Desired Bore
Desired Outer Diameter

bearing numbering system

  1  2 3 4 5 6 7 8 9
 Example 1     6800 H   ZZ MC2 3 SRL
 Example 2 S MR 74   W ZZS MC3 P6 AF2
 Example 3 S FR 133   T   MC4 1 SRL
 Example 4 S FR 8   J   C3
 Example 5     F3-8M   TP       AF2


1. Materials

Carbon Steel - SAE52100

All Types   No symbol
Stainless Steel - AISI 440C    
 Standard Metric   H
 Imperial & MR Series Metric   S
2. Bearing Types     
Inch   R
Inch, flanged   FR
Inch, extended inner    RW
Inch, extended inner, flanged   FRW
Metric (600 series)   No symbol
Metric, flanged (600 series)    F
Extra thin metric type   ET
Extra thin inch type   ER
Thrust with raceway   FM
Thrust without raceway   F
3. Frame sizes 
4. Materials - Standard metric    
Stainless Steel AISI 440C   H

5. Cages
Steel ribbon type
Steel crown type    W
Nylon crown type    TW
Steel rivet type    RJ
Full complement    V
Thrust FM type   TP
Thrust F type   TD
6. Closures      
Metallic shield (removable)    ZZS
Metallic shield    ZZ 
Rubbing seals   2RS 
Non rubbing seals    2RU 
Rubbing seals (Teflon)   TTS 
7. Radial Play     
Standard (10mm + bore)   C2 Normal/C0(CN)/C3/C4/C5
Miniature (Up to 10mm bore)   MC1-MC6 Note: MC3 is detault standard unless otherwise stated

8. Tolerances
No symbol
ABEC 3   3
ABEC 5   5
ISO Class 0   P0
ISO Class 6   P6
ISO Class 5   P5
AFMBA Class 3P
AFMBA Class 5P
9.  Lubrication     
Oil Aeroshell Fluid 12
Grease Multemp SRL



Product By Industry

Today we serve a broad band of industry with a wide range of quality products.

Need a technical question answered?