Seiko Instruments Inc. Precision Machinery Division

Actually, It is accuracy. The maximum number of rotation of SII made spindle is 200,000min^-1 as incredible high speed. But, we really want you to know that it is super high precision rotation. Through experience of design and manufacturing of precision grinding machines for half a century, these spindles, which have been meeting customers' stringent accuracy requirements, boast the highest machining accuracy. When accuracy is thought necessary, please take SII spindle in hand.