Chuck Actuator, Hydraulic OEM: Nikko Model: 52/105FR Specifications: ...Bore Diameter: 52 mm (2.04724 Inches) ...Surface Piston Area: 105 Square Centimeters (CM2) ...Max. RPM is Rated at 6,000 ...Made for Turning This piece is about 15 years old. It was purchased brand new and never installed on any machine. EQUIPMENT LOCATION: Portland, OR Unit is available for inspection. Buyer responsible for freight logistics and expenses. Seller will load onto Buyer's transportation. MD Equipment Services will deliver; fee depends on time and distance. Contact MD Equipment Services LLC to schedule an inspection or arrange purchase.