SMC MHZ2 Series Air Gripper, Parallel Opening, Closing Linear Guide Parallel Type, MHZ2 40D M9BZ Brad Pin Punch Set Octagonal Specification item model symbol Specification Specification item model symbol Specification information bearing type L ball bush bearing tube inner diameter 20 tube inner diameter 20mm Types of port screws M screw Rc1 8 cylinder stroke 20 cylinder stroke 20mm auto switch Y59AL Solid state auto switch Automatic and infinitely variable adjustment of the clamping height up to 13 mm while clamping force remains unchanged – without having to make manual changes to the position of the pressure screws