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Bearing cleanliness
| Description | Bearing Interchange | ||||||
| HCH | SKF | FAG | TORR | SNR | Russia | ||
|
Part |
Open One shield Two shields |
BLANK Z ZZ |
BLANK Z(Z) ZZ(ZZ) |
BLANK ZR(Z) 2ZR(2Z) |
BLANK D DD |
BLANK Z ZZ |
BLANK 60 160 |
|
One seal(contact) Two seals(contact) Two seals(contact) |
RS (RS1) 2RS(2RS1) RZ |
RS1(RSH) 2RS1(2RSH) RZ(RSL) |
RSR 2RSR RSD |
P PP -- |
E EE -- |
80 180 -- |
|
|
Two seals(non contact) Tight clearance Normal clearance |
2RZ C2 BLANK /C0/CN |
2RZ(2RSL) C2 BLANK /C0/CN |
2RSD C2 BLANK /C0/CN |
-- H R |
-- J20 BLANK |
-- C2 BLANK /C0/CN |
|
|
Larger than normal clearance Large clearance |
C3 C4 |
C3 C4 |
C3 C4 |
P J |
J 30 J40 |
C3 C4 |
|
|
Miniature bearing clearance classification |
MC1 MC2 MC3 MC4 |
-- -- -- -- |
-- -- -- -- |
-- -- -- -- |
-- -- -- -- |
-- -- -- -- |
|
|
MC5 Electric Motor Quality Clearance for electric motor |
-- EMQ CM |
-- QE6 -- |
-- -- -- |
-- -- -- |
-- -- -- |
-- -- |
|
|
Snap groove Snap ring Steel Cage Brass Cage |
N NR BLANK M |
N NR BLANK M |
N NR BLANK M |
N NR BLANK M |
N NR BLANK M |
N NR BLANK M |
|
|
Deep Groove ball Bearing Type |
Rxx
60xx
67xx
160xx |
Rxx
60xx
--
160xx |
Rxx
60xx
--
160xx |
Sxx
91xxK
--
-- |
--
60xx
--
-- |
--
1xx
--
-- |
|
Note: 1. Above interchange information is for reference purpose only.
2. SKF contact seal with RSH means inner ring with groove.
3. SKF contact seal with RS1 means inner ring without groove.
4. SKF non contact seal with RSL means inner ring with groove.
5. SKF non contact seal with RZ means inner ring without groove.
| Description | Bearing Interchange | ||||||
| HCH | NSK | NTN | KOYO | NACHI | NMB | ||
|
Part Number Suffix |
Open One shield Two shields |
BLANK Z ZZ |
BLANK Z ZZ |
BLANK Z ZZ |
BLANK Z ZZ |
BLANK (BLANK) ZE(Z) 2ZE(ZZ) |
BLANK Z ZZ |
|
One seal(contact) Two seals(contact) One seal(non contact) |
RS(RS1) 2RS(2RS1) RZ |
DU DDU V |
LU LLU LB |
RS(RK,RD) 2RS(2RK,2RD) RU |
NSE(NSL) 2NSE(2NSL) NKE(NK) |
D DD S |
|
|
Two seals(non contact) Tight clearance Normal clearance |
2RZ C2 BLANK /C0/CN |
VV C2 BLANK /C0/CN |
LLB C2 BLANK /C0/CN |
2RU C2 BLANK /C0/CN |
2NKE(2NK) C2 BLANK /C0/CN |
SS C2 BLANK /C0/CN |
|
|
Larger than normal clearance Large clearance |
C3 C4 |
C3 C4 |
C3 C4 |
C3 C4 |
C3 C4 |
C3 C4 |
|
|
Miniature bearing clearance classification |
MC1 MC2 MC3 MC4 |
MC1 MC2 MC3 MC4 |
-- -- -- -- |
MC1 MC2 MC3 MC4 |
C1P C2P C3P C4P |
MC1 MC2 MC3 MC4 |
|
|
MC5 Electric Motor Quality Clearance for electric motor |
MC5 EMQ CM |
-- E CM |
MC5 E CM |
C5P E CM |
MC5 -- CM |
E CM |
|
|
Snap groove Snap ring Steel Cage Brass Cage |
N NR BLANK M |
N NR BLANK M |
N NR BLANK M |
N NR BLANK M |
N NR BLANK M |
N NR BLANK M |
|
|
Deep Groove ball Bearing Type |
Rxx
60xx
67xx
160xx |
Rxx
60xx
--
160xx |
--
60xx
67xx
160xx |
Rxx
60xx
67xx
160xx |
--
60xx
--
160xx |
--
60xx
--
160xx |
|
Note: 1. Above interchange information is for reference purpose only.
2. NKS contact seal with DU means rubber seal with three lips.
3. NTN contact seal with LU means normal contact seal, LH means light contact seal.
4. Koyo Contact seal with RS means normal contact seal, with RK means heavy contact seal and with RD means light contact seal.
