Function
44
01.00|ROTA THW vario |en-US
Function
Function and handling
The wedge-bar power chuck type THW vario is actuated using a
rotating closed or open-center hydraulic cylinder. The axial tensile
or pressure forces are converted to the radial jaw clamping force
via wedge bars positioned tangentially to the chuck body.
The clamping and opening path of the chuck jaws is determined by
the clamping cylinder. The base jaws with screwed-on top jaws are
moved or changed in the open clamping position. For safety
reasons, the serration for the base jaws is still engaged in this
chuck piston position. The base jaws are unlocked mechanically.
For each jaw guidance, a jaw-change bolt with hexagon socket
(which can be turned using the chuck key) is arranged on the chuck
perimeter. Turning the jaw-change bolt moves the serration for
the wedge bar against spring pressure to the rear and out of the
serration for the base jaw. In this position, the base jaws can be
changed or moved radially inwards or outwards. It is not possible
to pull out the chuck key in this position.
WARNING
The chuck key (item 90) is locked so long as the chuck jaws have
not been moved into the functional area! The functional area
means that the base jaw is engaged by the serration of the
angle.
The chuck piston (item 3) must not be moved as long as the
chuck key (item 90) is located in one of the jaw-change bolts
(item 8) for the chuck.
9
9.1
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 ...