AC MUM0096 rev. 07 - 29 -
MR21
18.3. CHECKING THE STROKE
Make sure that the brake opening lever (6) is in the closed
posion. Manually press the electromagnet pin (5) right down and
then measure the clearance between the adjusng nut (1) and
the brake shoe (). If the clearance is < 0.5 mm, the stroke must be
adjusted immediately.
0
50
100
150
200
250
300
Braking torque
L [mm]
Torque [Nm]
C nom.
Machine
type
D
(Ø Brake drum)
[mm]
L
(minimum)
[mm]
Maximum braking
torque [Nm]
Brake lining
fricon coecient
[Nm]
MR21 255 90 250 0.44
1
2
5
6
1
2
5
BRAKE ON
(brake shoes closed)
POS 1
BRAKE OFF
(brake shoes open)
POS 2
BRAKE OFF
(brake shoes open)
POS 2