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8. Daily Inspection and Maintenance
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FB-05A1 (Indoor Type)
Part Number
Part Name
1
Stationary core
2
Spacer
3
Brake lining
4
Attachment bolt
5
Boss
6
Shaft-retaining C-ring
7
Cover
8
Fan set screw
9
Fan
10
Leaf spring
11
Fixed plate
12
Armature plate
13
Spring
14
Electromagnetic coil
15
Bearing
16
Motor shaft
- Gap Inspection
(1) Remove the cover [7].
(2) Insert a gap gauge between the stationary core [1] and the armature plate [12]
and measure the gap. Measure in 3 locations around the circumference.
(3) Adjustment is required if the gap value is near the limit.
- Gap Adjustment
(1) Remove the cover [7].
(2) Loosen the fan set screw [8] and remove the fan [9].
(3) Slightly loosen the attachment bolts [4] and rotate the fixed plate [11] counter clockwise, as far as it will go. Then tighten the attach-
ment bolts [4]. After tightening, measure the gap (G) and check to see if the gap value is between the required value and the limit.
(This operation will reduce the gap by 0.3 mm.)
(4) Turn the power on and off to check brake action.
(5) Attach the fan [9] and cover [7]. Use a fan set screw [8] coated with Three Bond TB2365 (Sumitomo part number EW444WW-01), and
tighten with a torque of 0.3 – 0.5 N•m.
Note: If the optional brake release bolt is installed, disassemble the brake after removing the release bolt.
Gap Value G (mm)
Required value
(original value)
Limit value
0.2 - 0.35
0.5
Ｇ
1
2
3
4
5
6
7
8
13
12
11
10
9
14 15 16
Figure 8-4
