Guide for bushings

••• Very suitable

•• Suitable

• OK

– Not suitable

	BK1 STEEL/PTFE	BK2 STEEL/POM	FB090 BRONZE BUSHING GREASE POCKETS	LATHED BRONZE BUSHINGS	HARDENED BUSHINGS	POLYAMIDE PA6	POLYAMIDE WITH MOS 2
Lubrication freei	•••	••	-	-	-	••	•••

Dirt-resistant	•	••	•••	••	•••	••	••

Low friction	•••	•••	••	••	•	•	••

Corrosion resistant	•	•	•••	•••	••	•••	•••

High temperatures	••	•	••	••	•••	-	•

High loads	•••	•••	•••	••	•••	-	-

Vibration damping	•	••	•	•	-	•••	•••

High sliding velocity	••	••	•	•	•	•	•

Edge load	•	••	•	•	••	-	•

Moisture absorption (+235°C)	-	-	-	-	-	10%	1%

Economy	•••	•••	•••	•	•	••	•

Min/Max temperature °C	-195/+260	-40/+120	-60/???	-60/+170	-90/+380	-20/+80	-40/+130

Max static load N/mm²	250	250	140	160	650	20	80

Max dynamic load N/mm²	80	100	40	50	80	12	30

Max sliding velocity m/sec rotation	2,5	2,5	2,5	5	4	2	1

Max sliding velocity linear m/min	2,0	2,0	2,5	5	4	3	4

Shaft tolerance	f7-h8	h8	e7-F8	e7	f8	h6	h9-h7

Bearing seat tolerance	H7	H7	H7	H7	H8	H7	H7

Friction coefficient	0,003-0,20	0,01-0,10	0,002-0,23	0,08-0,15 (greased))	0,10-0,25	0,10-0,30	0,04-0,15

Processabilityt	less good (due to slit)	less good (due to slit)	less good (due to slit)	very good	less good	good	good