Assembly
40
01.00|ROTA THW vario |en-US
6 Tighten vario F with 3 screws (item 48) on the chuck face
(screws: DIN EN ISO 4762 - M10-10.9 tightened to a torque of
53 Nm). The vario component is fixed free from play in the
lathe chuck.
7 Change the clamping pressure on the hydraulics to the
actuating force of the vario.
Disassembly of the vario F
The lathe chuck is disassembled in the same way but in the reverse
order.
After cleaning and oiling, we recommend storage in a closed box.
NOTICE
The maximum axial actuating force must not exceed the
following values.
Type
Max. actuating force
Vario F 65 / Vario F 65-51
45 kN
Vario F 80
50 kN
Vario F 100
50 kN
Checking the concentricity and axial run-out
The achievable accuracy of the vario F depends mainly on the
condition of the taper and flat surface in the power chuck. Here,
the influence of wear marks and damage is a factor as well as
contamination. To check the accuracy, the clamping head must be
removed.
It may be necessary to align the clamping device holder. To do this,
place a dial gauge in the taper and turn the spindle. If the
concentricity error is greater than 0.01 mm, the clamping taper
can be aligned. With the spindle stationary, loosen the 6 M10
screws on the face side, use a rubber mallet to ensure exact
concentricity and tighten the screws crosswise with a torque
wrench according to Table 1.
To check the axial run-out, place a dial gauge on the flat surface of
the Vario F chuck and turn the spindle. If the axial run-out is
greater than 0.005 mm, the vario F chuck should be disassembled
with the spindle stationary and all contact surfaces checked for
damage or dirt.
If there is no dirt on the fitting surface, an attempt can be made to
obtain an optimum concentricity value by twisting the vario on the
lathe chuck by 120° in each case.
Summary of Contents for ROTA THWvario
Page 60: ...Assembly drawing 60 01 00 ROTA THW vario en US Assembly drawing ROTA THW vario 215 62 13 13 1 ...
Page 61: ...Assembly drawing 01 00 ROTA THW vario en US 61 ...
Page 62: ...Assembly drawing 62 01 00 ROTA THW vario en US Segmented mandrel ROTA THW vario D 13 1 1 ...
Page 63: ...Assembly drawing 01 00 ROTA THW vario en US 63 Collet chuck ROTA THW vario F 13 1 2 ...