Prefix & Suffix Interchange
CHARACTERISTICS
|
NTN |
SKF |
FAG |
TORR |
NSK |
| Closures | |||||
| One Non-Contact seal | LB |
RZ |
RSD |
N/A |
V |
| Two Non-Contact seals | LLB |
2RZ |
1RSD |
N/A |
VV |
| One Contact seal | LU |
RS1 |
RSR |
P |
DU |
| Two Contact seal | LLU |
2RS1 |
2RSR |
PP |
DDU |
| One Shields | Z |
Z |
Z |
D |
Z |
| Two Shields | ZZ |
ZZ |
2Z |
DD |
ZZ |
| One Snap Ring | NR |
NR |
NR |
G |
NR |
| Precision Classes | |||||
| AB E C 3 | P6 |
P6 |
P6 |
M* |
P A3 |
| AB E C 5 | P5 |
P5 |
P5 |
V* |
P5, PA5 |
| AB E C 7 | P4 |
P4 |
P4 |
MM* |
P4, PA7 |
| AB E C 9 | P2 |
PA9A |
P2 |
MMX* |
P2, PA7 |
| Spherical Features | |||||
| Tapered Bore | K |
K |
K |
K |
K |
| Oil Groove | D1 |
W33 |
S |
W33 |
E4 |
| Shaker Screens | U AVS |
CACM2/W502 |
F80 |
W800 |
U-15-VS |
CHARACTERISTICS
|
NTN |
SKF |
FAG |
TORR |
NSK |
| Contact Angles | |||||
| 15 deg | C |
C |
C |
2* |
C |
| 30 deg | NO SYMBOL |
AC |
E(25deg) |
3=(25deg) |
A, (A5=25deg) |
| 40 deg | B |
B |
B |
WN |
B |
| Preload | |||||
| Extra Light | GL |
G0 |
U0 |
UX |
C2 |
| Light | GN |
GA |
UL |
UL |
L, C7 |
| Medium | GM |
GB |
UM |
UM |
M, C8 |
| Heavy | GH |
GC |
UH |
H, C9 |
|
| Cage | |||||
| Phenolic | T1 |
TP |
TA, TB, TH, TP |
CR |
T |
| Pressed Brass | Y |
Y |
MP |
NO SYMBOL |
Y |
| Polyamide | T2 |
TN, P |
TN |
PRB/PRC |
TY |
| Bronze | L1 |
M |
M, MP |
MBR |
CAM, M |
| Nylon | T2 |
TN9 |
T, TV |
CF |
TY |
| Pressed Steel | J |
J |
J |
C, CD |
W |
| Duplex | |||||
| Universal ground | G |
G** |
U |
SU |
G |
Internal Modification Code |
Cage Code |
Seal Shield Code |
Raceaway Configuration Code |
Duplex Arrangement Code |
Internal Clearance / preload Code |
Tolerance Code |
Lubrication Code |
| U: Internationally interchangeable tapered roller bearings R: Non-Internationally interchangeable tapered roller bearings ST: Low torque tapered roller bearings HT: High Axial load use cylindrical roller bearings |
L1: High Strength machine brass cage F1: Machined carbon steel cage G1: High Strength machined brass rivet less cage w/square bolt G2: Pin type cage J: Pressed steel cage T2: Plastic mold cage |
LLB: Sythetic rubber seal (Non-contact type) LLU: Synthetic rubber seal (contact type) LLH: Synthetic rubber seal (low-torque type) ZZ: Steel shield |
K: Tapered inner ring bore , standared tapered ratio 1:12 K30: Tapered inner ring bore, standard taper ratio 1:30 N: Snap ring groove NR: Snap ring groove with snap ring D: Lubrication hole/lubrication groove |
DB: Back to back arrangement DF: Face to face arrangement DT: Tandem arrangement D2: Two matched paired bearings G: Flush ground +a: Spacer (a =spacer's standard width dimensions) |
C2: Internal clearance less than normal (CN): Normal Clearance C3: Internal Clearance greater than normal C4: Internal clearance greater than C3 C5: Internal clearance greater than C4 CM: Radial internal clearance for electric motor use /GL: Light preload /GN: Normal preload GM: Medium preload GH: Heavy preload |
P6: JIS Class 6 P5: JIS Class 5 P4: JIS Class 4 P2: JIS Class 2 2: Inch series tapered roller bearing (ABMA Class 2) 3: Inch series tapered roller bearing (ABMA Class 3) 0: Inch series tapered roller bearing (ABMA Class 0) 00: Inch series tapered roller bearing (ABMA Class 00) |
/2A: Shell Alvania 2 grease /3A: Shell Alvania 3 grease /8A: Shell Alavania EP2 grease /5k: MULTEMPSRL /LX11: Barierta JFE552 /LP03: Solid grease (for use with solid grease bearings) |
Supplementary Prefix code |
Special Application ./ material/ heat treatment |
4T- |
4 T Tapered roller bearings |
ET- |
E T Tapered roller bearings |
E- |
Carburized alloy steel bearings |
F- |
Stainless steel Bearings |
HL- |
HL (High lubrication) roller bearings |
TS2- |
Dimension stabilised bearing for high temperature use (to 160 deg C) |
TS3- |
Dimension stabilised bearing for high temperature use (to 200 deg C) |
TS4- |
Dimension stabilised bearing for high temperature use (to 250 deg C) |