The PPS-28 Stepper Motor version is suitable for applications requiring high speed and high blocking force. Miniature crossed roller bearings assure high stiffness and guiding accuracy for loads up to 50 N (horizontal orientation). It utilizes a 2-phase stepper motor resulting in high speed (> 5 mm/s) and high blocking force (> 5 N). The PPS-28SM is available in open loop or with an external encoder. Open loop resolutions of 0.1 µm are achievable. Versions capable of operation in vacuum (10-6 mbar) are available. The PPS-28SM is compatible with the MMC-200 controller. PPS-28SM精密定位平台