MAK M20 - Wear and Levelling of the Ridges (Borderline Case)

Al-Grooved Bearings
Inspection / Evaluate
A5.05. 02.03.09.01
M20
en / 26.09.1995 IB000142 5/7
02
Ĺ
3. Wear and levelling of the ridges (borderline case)
Condition:
Bearing metal ridges are worn locally.
Wear limits:
a) max. 20 % of width
b) max. 5 % of circumference
c) max. 10 % of width
d) max. 35 % of circumference
e) max. 10 % of width
f) lock of chamber
Assessment:
When reaching the conditions of wear as shown above, bearing should be replaced.
Fig. 8
ac e
f
b d
Fig. 9
= Bearing metal ridges worn
= Wear 1:1