Inquiry (采购产品): Rotary Actuator Port Question I am will be using a Tork-Mor Rotary Actuator P/N:DS74-BC5L in a fatigue test and was wondering what the small port located on the mounting block is for? I believe it's a -4 size port. any help would be great! Thanks **** Hidden Message ***** Joe Nelson 53234 USA Company: Oilgear E-mail: jnelson@oilgear.com **** Hidden Message ***** jnelson@oilgear.com