Model KN-302 with high precision and high productivity is designed based on reputed model KN-312. It fits to grind small bearing inner race, OD of Tri-port roller , Rod-end ball, a complete Hydro-static bearing with high precision and endless life. His also provided with double armed loader and 1 magnet-2 shoe work support.
Rotary and single point dresser are selectable, feed motion is achieved by wheel slide.
Machine Type |
KN-302 |
Grind Max OD. size of work(φmm) |
8～35 |
Work width(mm) |
5～20 |
Workhead center height(mm) |
1050 |
Table stroke(mm) |
120 |
Table Max. speed(m/min) |
10 |
Dress stroke(mm) |
70 |
Wheel size(mm) |
OD:455, |
Workhead rotation(rpm) |
1000～3500 |
Swivel angle(deg) |
-1～+31 |
Weelhead rotation |
1880rpm(2700m/min),1770rpm(2400m/min) |
Work support type |
Shoe-magnet |
Sizing |
Sizematic or Gaugematic |
Dressing |
Rotary disk |
Wheel spindle motor |
5.5kw 4P |
Work spindle motor |
0.4kw 4P |
Rotary dress motor |
0.2kw 2P |
Cross feed motor(X-axis) |
2.0kw AC servo motor |
Dree Slide motor(Z-axis) |
0.9kw AC servo motor |
Hydraulic motor |
1.5kw 4P |
Floor space(mm x mm) |
1800 x 1785 |
Weight(kg) |
3000 |
Work pieces |
Oil Splasher,Torque Converter,Bearing Inner(W-groove),Teaper Roller Bearing Inner |
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[Example of work piece]
KN-302B [SHOE TYPE MAGNET CHUCK]
Work piece is securely supported by the carbide shoe nad ground to size while the work piece is rotated on a powerful magnetic chuck. This system eliminates work piece clamping and achieves consistent grinding of excellent roundness and squareness, thus the portion of a work piece which is ground to the ground reference outer diameter can have as high concentricity as possible. Of course, it is possible to grind a work piece with reference to an outer diameter of a unground work piece with mill scale.