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Double Row Angular Contact Ball Bearings Designation system
The designations of most Lily rolling bearings follow a system that may consist of a basic designation with or without one or more prefixes and/or suffixes.
An example and the applicable options for double row angular contact ball bearings are given below.
Examples
| 3207 A-2Z | where | 3207 = |  |
| A = |  |
||
| -2Z = |  |
Applicable options
 |
Prefixes (n.a.) |
|
Basic designation |
| Listed in table 1 or drawing number identification | |
|
Suffixes - Internal design |
| A | No filling slots |
| D | Two-piece inner ring |
|
Suffixes - External design (seals, snap ring groove, execution, etc.) |
| N | Snap ring groove in the outer ring |
| NR | Snap ring groove in the outer ring, with appropriate snap ring |
| CB | Controlled axial internal clearance |
| -2RS1 | Contact seal, NBR, on both sides |
| -2Z | Shield on both sides |
 |
Suffixes - Cage design |
| - | Stamped steel cage, ball centred |
| J1 | Stamped steel cage, ball centred (bearing with a two-piece inner ring) |
| M | Machined brass cage, ball centred |
| MA | Machined brass cage, outer ring centred. |
| TN9 | Glass fibre reinforced PA66 cage, ball centred |
 |
Suffixes - Materials, heat treatment (n.a.) |
 |
Suffixes - Accuracy, clearance, preload, quiet running |
| P5 | Dimensional and geometrical tolerances (tolerances of run-out and orientation) to class P5 |
| P6 | Dimensional and geometrical tolerances (tolerances of run-out) to class P6 |
| P62 | P6 + C2 |
| P63 | P6 + C3 |
| P64 | P6 + C4 |
| C2 | Axial internal clearance smaller than Normal |
| C3 | Axial internal clearance smaller than Normal |
| C4 | Axial internal clearance greater than C3 |
 |
Suffixes - Bearing sets, matched bearings |
 |
Suffixes - Stabilization (n.a.) |
 |
Suffixes - Lubrication (n.a.) |
| GE2 GWF MT33 VT113 WT |
Grease suffixes (table 2) |
| C4 | Axial internal clearance greater than C3 |
 |
Suffixes - Other variants (n.a.) |