HL-140 E12 / HL-160 E12 / HL-190 E12 / HL-220 E12
N-120EL12 / N-140EL12 / N-165EL12 / N-195EL12
Rev. F
Page 47
8/2/18
7.3.5
Inspecting the scissor mechanism
The scissor mechanism's pivot points must be checked for play, wear and damage by an expert
every five years. A pivot point will be rejected if one or more of the following rejection criteria apply to
the shaft or the bearing.
Rejection criteria:
The shaft or the bearing has visible damage.
The surface roughness of the shaft or the bearing exceeds 1
m.
The chrome layer on the shaft is damaged.
The depth of the bearing's grease chamber is less than 0.40 mm.
The shaft or the bearing is not sufficiently lubricated.
The shaft or the bearing has seized.
The play between the shaft and the bearing is greater than the specified limit (see table
below).
Shaft diameter
(mm)
Clearance F7
(
m)
Bearing - inner
diameter
(mm)
Clearance H9
(
m)
120 f7
-43
-83
120 H9
+100
0
100 f7
-36
-71
100 H9
+87
0
90 f7
-36
-71
90 H9
+87
0
75 f7
-30
-60
75 H9
+74
0
60 f7
-30
-60
60 H9
+74
0
