We Manufacture Machine Tools

Precision Cylindrical Grinding Machines are designed and manufactured to achieve high accuracies of roundness and cylindricity of the jobs. It has separate internal and external grinding heads, suitable for both production as well as tool room applications.

Close grained graded casting (FC 25) with box structured adequately ribbed design, provides very high rigidity and thermal stability in long run.

The machine has a Rigid Universal Work Head. It has an alloy steel spindle running on unique hydrodynamic bearings having self-alignment of clearance for different speeds. During dead center grinding a simple adjustment completely eliminates the clearance in the bearing thus providing rigid support to the jobs. The bearing arrangement gives wear free operation.

The wheel head has a very rigid spindle running in Hydrodynamic Multi-point Bearings. The Spindle is made of alloy steel, specially heat treated (sub-zero) to achieve high accuracy and stability for long life, Spindle cartridge unit is easily interchangeable.

Internal Grinding Head is mounted separately on the in-feed slide thus providing a rigid support to the spindle giving better surface finish in grinding. Internal grinding operations can be done after removing the external wheel.

The quill is carried in precision pre-loaded antifriction sleeve and is kept under adjustable spring load. A dresser block is also mounted on the tail stock body.

The in-feed system moves on pre-loaded Linear Guideways. This guarantees high repetitive accuracy and stick-slip free fine movement of the slide. In-feed is given through a hardened and precision ground cam. Grinding allowance and the required stepless variable coarse and fine in-feed rates can be pre-selected on automatic versions. The automatic grinding cycle operates as follows:
RAPID APPROACH – COARSE FEED – FINE FEED – SPARK OFF – RAPID RETRACTION OF THE WHEEL HEAD AND THE IN-FEED HAND WHEEL TO THE PRE-SELECTED POSITION. This cycle also starts/stops the work head motor and the coolant motor automatically. The machine is also capable of interfacing with in-process gauging units as options.

The in-feed slide is grease-packed for life. The table slide with turcite is provided with automatic lubrication from the Hydraulic system.

Variety of coolant filtration systems are available. From baffle tray(standard) to magnetic, paper cum magnetic type filtration system as optional.
“S” models with hydraulic rapid and table movement and manual in-feed are also available.