Designation system
The designations of SKF bearing accessories follow a system that consists of a product type and size designations with or without a suffix:
An example and the applicable options for adapter sleeves are given below.
Example
| H 312 E | where | H = |  |
| 312 = |  |
||
| E = |  |
Applicable options for adapter sleeves
| Product types |
| H | Adapter sleeve, dimensions in accordance with ISO standard, basic design |
| HA | Adapter sleeve, dimensions in accordance with ISO standard, except the bore, in 1/16 in. |
| HE | Adapter sleeve, dimensions in accordance with ISO standard, except the bore, in 1/4 in. |
| HS
| Adapter sleeve, dimensions in accordance with ISO standard, except the bore, in 1/8 in. |
| OH
| Adapter sleeve, dimensions in accordance with ISO standard, prepared for oil injection |
| OSNP
| Adapter sleeve, dimensions in accordance with ANSI standard, prepared for oil injection, with a locking plate |
| OSNW
| Adapter sleeve, dimensions in accordance with ANSI standard, prepared for oil injection, with a lock washer |
| SNP
| Adapter sleeve, dimensions in accordance with ANSI standard, with a locking plate |
| SNW
| Adapter sleeve, dimensions in accordance with ANSI standard, with a lock washer |
| KH
| Unthreaded sleeve, basic design |
| KOH
| Unthreaded sleeve, prepared for oil injection |
| Size identification |
|
| Listed in the product tables for: |
| Suffixes |
| B | For adapter sleeves for oil injection: One or two oil supply ducts at the end opposite the threaded section |
| B | For adapter sleeves for inch shafts: Whitworth thread |
| D | Sleeve split in two halves
|
| E | Adapter sleeve without key slot, with a KMFE lock nut or standard adapter sleeve with an HME lock nut |
| EH | Adapter sleeve without key slot, with a KMFE .. H lock nut |
| EL | Adapter sleeve without key slot, with a KMFE .. L lock nut |
| G | Thread diameter changed according to revised ISO standard |
| H | One oil supply duct at the threaded end |
| HB | One or two oil supply ducts at the threaded end |
| L | Adapter sleeve with a lock nut with lower sectional height |
| TL | Same as L, but with key slot positions for a locking clip |
