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Bearing ldentification System
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1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
SERIES |
Material |
Type |
Style |
Basic
Size |
Special
Feature |
Closure |
Ring
Feature |
ABEC
Tolerance |
Radial
Play |
Lubrication |
Metric |
M |
F |
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626 |
X |
ZZ |
EE |
ABEC-3 |
C3 |
L19 |
inch |
S |
F |
R |
R8 |
X |
ZZ |
EE |
ABEC-3 |
C3 |
L19 |
1.Material(M)(S)
Symbol M or Blank denotes SAE52100 Chrome Steel, Symbol S denotes SuS440C Stainless Steel.
2.Type(F)
Symbol F is used to designate that a Flanged bearing is required.
3.Style(R)
Style(R) is used for all miniature and instrument bearings to signify Single Row Radial Retainer Type.
4.Basic Size(626)(R8)
See standard Bearing Part Numbers Listed on the following pages.
5.Special Feature(x)
Symbol X is used to designate a change in the standard bearing size.
6.Closure(ZZ)
The following symbols designate available closures. No designation denotes open bearing.
Z-Single Shield          RS-Single Rubber Seal    VV-Double Non-Contact Seals
ZZ-Double Shields        2RS-Double Rubber Seals  ZZS-Removable Seals
Z1-Shield on Flange Side  TT-Double Teflon Seals   UU-Double Ultra-Seals　 Z2-Shield Opposite Flange Side
7.Ring Feature（EE�
Symbol EE is used when Extended lnner Rings are required.
8.ABEC Tolerance(ABEC-3)
AFBMA Standards:Â Â Â Â Â ABEC-1Â Â ABEC-3Â Â Â ABEC-5Â Â ABEC-7
ISO Standards:           P0      　 P6  　      P5　      P4
9.Radial Play(C3)
Symbol C3 followed by numbers indicates the range of radial play.
Blank: Standard, C2: Tight, C3: Loose, C4: Looser than C3, C5: Looser than C4
10.Lubrication(L19)Manufacturer's Option if Blank
All bearings supplied with manufacturer's standard lubrication.
L15: Shell Alvania2,     L31: Shell Dolium R,   L60: Mobil Grease 28,       L63: Mobil Grease HP,
L06: Exxon Beacon 325,  L02: Exxon Andok C,L76: Dupont Krytox-240AC, L19: Chevron SRI-2
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