Technical Information

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