Product Description

The AC spindle motors that comprise the VAC series by Okuma are built for a wide range of factory automation operations. Okuma is a renowned manufacturer of drives and motion control products used across different industries worldwide. The Japan-based company has been in the business of factory automation for decades, with products such as CNC machine tools, lathes, machining centers, grinders, and CNC controls comprising its vast product portfolio.

The VAC-YMF22-18.5R-153KR2 is one of the 3-phase AC spindle motors designed and manufactured by Okuma in the VAC series. It has a maximum speed of 4,500 revolutions per minute and a continuous output power rating of 18.5 kW. Its peak power rating for 30 minutes is 22 kW. This motor has 4 poles and belongs to insulation class F based on the requirements given by NEMA. This means that the maximum temperature of its winding insulation is 155^o C. Also, it requires an ambient temperature of 0^o C to 40^o C for its operation.

The drive unit of the VAC-YMF22-18.5R-153KR2 is the D22A/1104. It is equipped with LEDs that keep the user updated on the operating status of the spindle motor. It is also very useful for diagnosing errors of the motor and rectifying them. Chips, oils, and water can be harmful to this motor. Hence, it should be protected from these. It should also be used with accessories that are certified safe by Okuma to prolong its service life. At the motor’s site of operation, the relative humidity should be non-condensing and must not exceed 95 %. It should also not be installed at a height greater than 1000m above sea level.