Home NTN Deep Groove Ball Bearings Prefix and Suffix
NTN Deep Groove Ball Bearings Prefix and Suffix
NTN Deep Groove Ball Bearings Prefix and Suffix
1. PREFIX
TS2: Heat stabilization for up to 320? F (160? C)
TS3: Heat stabilization for up to 390? F (200? C)
TS4: Heat stabilization for up to 480? F (250? C)
2. TYPE
6: Single row deep groove ball bearings
8, WC8: Single row deep groove ball bearings
BL: Maximum capacity
DE & DF: Special double row ball bearings
SC & SX: Special single row ball bearings
R: Inch series
TMB: Thermal mechanical bearing
3. INTERNAL DESIGN
A: Internal redesign, from A onward
U: Universal seal groove for open bearings
4. CHAMFER
Xn: Special chamfer, from 1 onward (X1, X2 . . .)
5. CAGE
No Symbol: Pressed steel cage
J: Pressed steel cage
T1: Phenolic cage
T2: Nylon cage
L1: Machined brass cage
6. SEAL OR SHIELD
No Symbol: Open Type
LB, LLB: Non-contact rubber seal
LU, LLU: Double-lip contact rubber seal
LH,LLH: Light contact rubber seal
LUA,LLUA: Polyacrylic rubber seal
LUA1,LLUA1: Fluorocarbon rubber seal
Z, ZZ: Shield
Z1, ZZ1: Stainless steel shield
ZA, ZZA: Removable shield
7. RING MODIFICATION
N: Snap ring groove on outer ring, but without snap ring
NR: Snap ring groove on outer ring, snap ring included
/X.XX: Special bore, XX.XX in mm; Ex. 5/16” bore, /7.938
/XX.X: Special O.D., size XX.X in mm
8. INTERNAL CLEARANCE
C1: Radial clearance less than C2
C2: Radial clearance less than normal
C3: Radial clearance greater than normal
C4: Radial clearance greater than C3
C5: Radial clearance greater than C4
CSXX: Special radial clearance; XX is mean value in 0.001 mm units
9. TOLERANCE
P6: ISO class 6 (equivalent to ABEC 3)
P5: ISO class 5 (equivalent to ABEC 5)
P4: ISO class 4 (equivalent to ABEC 7)
PXn: Special tolerance, from 1 onward (PX1, PX2 . . .)
Vn: Special requirement, from 1 onward (V1, V2 . . .)
10. PRELUBRICANT (Typical)
1E: Exxon Andok C grease
1W: Anderson Oil Winsor Lube L-245X, MIL-L-6085A
2AS: Shell Alvania #2 grease, MIL-G-18709A
2E: Exxon Unirex N3
3AS: Shell Oil Alvania #3 grease
5C: Chevron SRI #2 grease, MIL-G-3545C
5K: Kyodo Yushi Multemp SRL
5S: Shell Aeroshell #7 grease, MIL-G-23827A
9B: Mobil 28, MIL-G-81322
L627: Exxon Polyrex EM