Gardner Denver Wittig RFW 150 DV, Руководство по эксплуатации и обслуживанию

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BA-
45.01.0 • US •01/15
4-8
4. Installation
4.6.3 Drive by drive shaft
The drive shaft must

be constructed as a splined shaft,

be balanced

have the smallest possible angle and be as short as
possible.
The central axes of the drive shaft flanges must be
parallel to each other.
The drive shaft mounting flange must be fitted to the
drive shaft of the rotary compressor/vacuum pump.
The splined shaft section of the drive shaft must be
screwed to the mounting flange on the compressor
shaft.
The resulting prop shaft angle must not exceed 15° at
a rotation speed of 1500 min
-1
.
Do not fit the drive shaft the wrong way round
-pay attention to the markings.
1. Drive 2. Spline shaft
3. Position marking 4. Rotary compressor
Figure 4-5: Cardan shaft
4.6.4 V-belt drive
If the engine speed must be geared up or down, a V
belt drive is to be recommended. The rated engine
speeds as in Machine data, must be observed!
The V belt pulleys listed in the following table can be
fitted directly to the free end of the shaft.
Rotary compressor/
vacuum pump
Type RFW
150
DV
RFW
200
DV
RFW
260
DV
Belt profile SPB SPB SPB
Belt pulley diameter
DW mm 250 250 250
Max. operating
pressure
for V-belt drive
bar
g
2.0 1.5 0.5
Max. operating
vacuum
for V-belt drive
mbar 200 200 200
Number of belts 4 4 4
Between the V belt pulley and the housing
at least 12 mm gap should be allowed, as
the intake of cooling air is otherwise
impaired.
Assembly of the V belt drive

The parallel alignment of the axes in all planes must
be executed carefully and exactly both for the shafts
providing the drive power and for the shafts
receiving the drive power.

The belt grooves in the belt pulleys must not be
misaligned.

V belts of the correct lengths must be selected so
that the belt tension is consistent.

The belt tension is correct if the assembled and
tensioned V belts can be pressed down with the
thumb by 16 to 20 mm per 1000 mm axle span.
Because of the maximum torque, belt drive
by electric motors is not permissible.
Figure 4-6: Correct V-belt tension
1. Deflection: 16 ... 20 mm for every 1000 mm axle spacing
2. Axle spacing
Dw Belt pulley diameter: min 200 mm (8 in)