Technical Information
| Material | Bearing type | Bearing Part Number | Shields |
|---|---|---|---|
S=Satinless Steel No Prefix=Chrome Steel |
MF=Metric with Flange MR=Metric R=Inch FR=Inch with Flange F=Metric with Flange No Prefix=Metric |
2Z=Metal shields 2RS= Rubber Seals 2TS= PTFE Seals 2TZ= Metal/PTFE Seals No Suffix=Open |
|
| S | FR | 144 | -2Z |
| FR | 85 |
Specifications
| Tolerance class | Equivalences ISO | AFBMA |
|---|---|---|
| DIN P0 | class 0 | ABEC 1 |
| DIN P6 | class 6 | ABEC 3 |
| DIN P5 | class 5 | ABEC 5 |
| DIN P4 | class 4 | ABEC 7 |
| DIN P2 | class 2 | ABEC 9 |
Seals & Shields
| Design | Specification | Advantage/Disadvantage | |
|---|---|---|---|
 |
No seals |
Open |
No friction Easy to re-lube No protection against contamination |
 |
Metal shields |
Non contact seals |
No friction Good protection against contamination |
 |
Rubber seal |
Contact seals made of shyntetic rubber |
Higher friction Very good protection agains contamination |
 |
PTFE seals |
Contacto seals made of Teflon |
Low friction Very good protection agains contamination |
 |
PTFE seals with metal shields |
Contact seals made of Teflon |
Low friction Very good protection against contamination Good chemical characteristics |
|
Viton seals |
Seals made of Viton |
Higher friction High temperature Good chemical characteristics Very good protection against contamination |
 |
Rubber seal |
Non contact seal made of synthetic rubber |
No friction Very good protection against contamination |
 |
