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Type BFE
(FFE type - bushing with a flange)
Sliding sleeves made of porous sintered iron (SAE863) with graphite (0.5-3% volume), vacuum impregnated with SAE 30 oil (18-23% volume).
They are provide very small clearence. Should not be (pre)lubricated! (e.g. engines)
The series is available in accordance with DIN 1494
Characteristics
Typical load capacity static≦85 N/mm2
Typical load capacity dynamic≦1,3 N/mm2
Sliding speed≦5 m/s
Friction factorμ0,025
Hardeness35HB
Maximum PV1,3 N/mm2 * m/s
Operating temp.-100 do +200oC
Tolerances:
- housingH7
- sliding surface after assemblingH7-H8
- shaft f7-h8
- bushing lenght and flange diameterjs23
Twardość wału 200-300HB
Chropowatość Rz ≦ 4