1、Material AISI52100：

2、Series standard cross section： 0.250″ × 0.250″

KA120AR0 thin section bearing

3、BEARING INSIDE STRUCTURE ：

A : Angular contact single bearing (not ground for universal duplexing)

B : Angular contact pair—duplexed back to back

C : Radial contact

F : Angular contact pair—duplexed face to face

T : Angular contact pair—duplexed tandem

U : Angular contact single bearing—ground for universal duplexing

X : Four-point contact

Z : Other

4、SEPARATOR OR CAGE ：

C : Non-metallic composite, segmental, “snap-over” type – C, X

D : Phenolic laminate, one-piece ring, “snap-over” type – C, X

E : Brass, segmental “snap-over” type – C, X

L : Nylon one-piece molded ring with “snap-over” pockets – C, X

N : Nylon molded strip with “snap-over” pockets – C, X

P : Standard one-piece formed ring with “snap-over” pockets- C, X

T : Stainless steel, formed ring “snap-over” type – C, X

V : Brass, formed ring, “snap-over” pockets – C, X

X : PEEK, one-piece molded ring with “snap-over” pockets – C, X

G : Nylon one-piece molded ring with circular pockets – A

H : Phenolic laminate one-piece machined ring with circular pockets – A

J : Nylon molded strip with circular pockets – A

K : Phenolic laminate, riveted two-piece ring type – A, C, X

Q : PEEK, one-piece molded ring with circular pockets – A

R : Standard one-piece formed ring with circular pockets – A

U : Stainless steel, formed ring circular pockets type – A

Y : Brass, formed ring, circular pockets type – A

M : Formed wire strip or segmental cage, “snap-over” pockets – A, C, X

W : Formed wire strip or segmental cage, “snap-over” pockets – C, X

F : Full complement bearing – A, C, X

S : Helical coil spring – C, X

Z : Other (toroid ball spacers, spacer slugs, spacer ball or others available) – A, C, X

5、ACCURACY CLASS：

ABEC 1F , ABEC 3F , ABEC 5F , ABEC 7F

6、BEARING INSIDE CLEARANCE：