Motorized Grinding Spindles

We have been manufacturing motorized grinding spindles for more than 15 years. We aim at providing quality, accuracy and on time delivery to our customers which makes Capital's grinding spindles the best choice for your production needs.

We are specialized in precision fitting custom built AC induction motors to the spindle shaft. High accuracy and high-speed capability of these spindles are enhanced by precision balancing of these units. These spindles are associated with a temperature controlled assembly and inspection area and state-of-the-art coordinate measuring machines. Horsepower - Heat Dissipation Motor horsepower (HP) is dependent on the size and the RPM of the motor. The larger the motor, the greater the horsepower at a given RPM.

Variable Frequency Drives
Capital Engineering supplies motorized grinding spindles for the speeds up to 75,000 RPM. We provide a variable frequency drive for those spindles which require to operate at speeds other than 900, 1200, 1800 or 3600 RPM. These variable frequency drives should match to the motors they drive in order to work properly. The pre-determined volts-to-hertz ratios of motors and the variable frequency drives should match for their successful applications.

Speed control is provided to the machines so that they can be adjusted to ramp up and ramp down. Either it can be included in your machine program code or as an electrical control switch or dial.

Spindle Lubrication
The spindles rotating at high speed frequently get heated so they require special bearing lubrication. Our company provides excellent air/oil lubrication systems which injects accurate amounts of oil at controlled intervals which ensures optimum bearing life and produces minimum heat. There is no environmental oil mist concerns as this system utilize only fractions of a drop per cycle. Inside the spindle high air pressures is used which protects the spindle against any contamination.