GRINDTEK

Peenya Industrial Area, Bangalore, Karnataka

These spindles are used in CNC lathes for accurate turning, grooving, milling, fine boring, drilling applications.
The rpm of the spindle could vary from 500 to 8000 rpm. Generally we use bearings of P4 class angular contact ball bearings or taper roller bearings of reputed make.

Spindles are used to grind lengthy bores in one setting. Spindles of dia 36 - 100mm and length up to 1500mm can be manufactured with assured accuracy of 0.003mm.

This type of spindle has a synchronous speed motor built direct onto the spindle shaft, thus forming a complete self contained unit which is carefully balanced to remove all traces of vibration. All driving complications are eliminated and the unit can be made very compact. These spindles are fitted with super precision preloaded angular contact ball bearings. This type of spindles are put into many uses including surface, face, slideway, cutter, broach and form grinding etc. Spindle can be supplied to run horizontally, vertically or at any angle. In the event of heavy coolant requirement, special design consideration need to be incorporated for which we might need the full details of the application.

Spindles are used normally for grinding applications, fitted with angular contact fibre cage ball bearings with P3 / P4 grade or ceramic bearings, packed with KLUBER ISOFLEX NBU15 grease for life. Spindle diameters varies from 32 - 250mm, Length up to 500mm, and speeds up to 40000 rpm. Mist lubricated spindles are also manufactured. An exceptional system of dust and cutting swarf exclusion is used on spindles, foreign matter is prevented from passing into the bearings by a system of an air purge

These spindles have an in built electric motor, wherein the speed of the motor is proportional to the frequency of the electric supply. The variation in frequency is achieved from a static frequency inverter. Hybrid bearings with ceramic balls are used if the specification demands. The thermal movements on the spindle generated from the motor can be minimized by surrounding the motor portion with a water jacket / air circulation.