SMC Networks LEF Series Maintenance Manual page 8

Step motor (Servo/ 24VDC) / Servo motor (24VDC), LEFB25 AC servo motor
With the dust seal band removed as in Chapter 2 Mounting and removal of the dust
seal band and seal band stopper assembly, loosen the screw(2) which retains (3)
pulley holder assembly, and then rotate (1)tension adjusting screw. (Fig. 5-1)
LEFB32, 40 AC servo motor
With the dust seal band removed as in Chapter 2 Mounting and removal of the dust
seal band and seal band stopper assembly, the tension is adjusted by rotating
(1)tension adjusting screw. (Fig. 5-2)
Slide the table to the measurement position and enter the set values on the tension meter.
Measure the tension by flicking the belt on the specified side shown in Fig. 5-3. Fig.5-3
shows the position of the table and the measurement using the belt tension meter. Table
5-2 shows the values for setting and recommended tension of the tension meter.
3
2
1
Fig.5-1. Part for belt tension adjustment 1
Motor
Fig.5-3 Position of the table and measurement
Table.5-1 Pulley holder assembly retaining screws
Model
LEFB16∗T
Hexagon socket
LEFB25∗T
head cap screw
LEFB32T
Housing A
Measurement position
of the table
( L )
Belt
Screw type Screw size
M3x20
M4x20
M5x25
- 6 -
1
Fig.5-2. Part for belt tension adjustment 2
Point to measure
the tension
Tightening torque
+/- 10% [Nm]
0.63
1.5
3.0
End cover
Table
Qty.
1
1
1