3 Jaw High Precision Self Centering Chuck Through Hole Chuck for
CNC Lathe Machine
1. Description
Three-jaw self-centering chucks are mostly used in metal machine
tools. They can self-center to clamp or hold round, triangular or
hexagonal and other shapes of outer or inner surface work-pieces
for various machining and clamping. The tightening force is
adjustable and the centering accuracy is high, which can meet the
accuracy requirements of ordinary machine tools.
The three-jaw self-centering chuck standard is an important basis
for product design, manufacturing, and acceptance, and it also
provides a reference for the host computer.
Basic structure and working principle: The three-jaw self-centering
chuck uses three screws to fasten the chuck to the flange of the
machine tool through the screw holes on the end face of the disc
body. Insert the wrench into any square hole of the gear. When the
wrench is turned, the pinion gear drives the coil to rotate. The
rotation of the thread on the end of the coil drives the three jaws
to move forward or separate at the same time.
Features:
1. Short cylinder center mounting.
2. Model K11 chucks are provided with one-piece jaws (which
includes a set of internal jaws and a set of external jaws).
3. The raw material of chuck is steel.
4. All kinds of soft jaws are also provided.
2. Dimensions
| Model Number | D1 | D2 | D3 | H | H1 | H2 | h | S | z-d | Max.Torque | Limit Speed | Weight |
| 250 | 206 | 226 | 80 | 120 | 80 | / | 5 | 12 | 3-M12 | 320 | 2400 | 25.7 |
3. Advantages
| a. Full stroke design |
| b. Wide range of applications, diversification of processing
profiles |
| c. High repetitive positioning accuracy |
| d. Low maintenance cost, long service life |
e. Multiple configurations are available
e.1 Solid or hollow
e.2 Comb-type or mortise-groove type claws |
4. Production Line
