Linear units with toothed belt drive: LEZ 1/LEZ 2/LEZ 3/LEZ 9
Assembly instructions
Page 34
4.5
Assembling drive modules on LEZ 1
– LEZ 2 – LEZ 3 – LEZ 9
Assembling drive modules on LEZ 1
The diagram on the left clarifies assembly
of the drive module on the linear unit LEZ
1. Note that parts to be connected must be
free of swarf, rust and dirt.
The toothed belt of the linear drive is to be
threaded in the open state into the drive
module (surrounding the drive pinion). The
motor module ((1) with step-down ratio or
(2) as a direct drive) is to be secured to
the linear unit by means of a cheese head
screw to DIN 6912 8.8 M 6 x 45 (3). The
toothed belt must then be retensioned as
described in 4.3.
Assembling drive modules on LEZ 2
The diagram on the left clarifies assembly
of the drive module with step-down gears
on the linear unit LEZ 2. Note that parts to
be connected must be free of swarf, rust
and dirt. Gears must also have the same
pitch as the toothed belt.
The motor module (3) is to be secured to
the linear unit with 4 countersunk screws
DIN 6912 8.8 M6x16 (4). The A4x4x18
feather key(1) is then to be placed in the
groove of the gear shaft (2). Now push the
gear (5) onto the shaft (2) and secure this
with an 8.8 M6x20 countersunk screw to
DIN 6912 (7) and a matching washer (6).
Now assemble the toothed belt (8), over
the gear (5) and over the gear which is on
the motor shaft (bonded connection). The
toothed belt must be assembled and hand
tightened only. Now tension the toothed
belt (8),with the screws on the motor
slackened off and reset the motor in
position over the longitudinal holes. The belt prestressing is dependent on the power to be transferred
and the drive specification. Owing to the force transferred by the toothed belt, however, only slight
prestressing is needed. Then cover the step-down gears with the cover (9) and both countersunk
screws DIN 7991 8.8 M4x45 (10).