This is an ideal design of product for any VMC machine, particularly those with a good working envelope. The usual collision issues only generally appear with the older DC motorised machines where the motors are much longer than the digital counterpart, such as the Bridgeport VMC with SEM motor on the Heidenhain TNC370 controlled devices. This device is ideal for the smaller VMC machine up to and including around 800 in X. Due the carrying capacity, however, if you have a larger VMC and are doing relatively light work you could mount this device on a raiser block and swing larger diameters than its standard design suggests. The TJR model type R can be used in vertical and horizontal applications, the motor is mounted to the right side of the device and therefore can be laid on its back. The TJR model type R is a full contouring 4th axis device. Can be controlled directly from the machine tool control or via a separate programmable box via M signal start.