LINEAR MOTION CONTROL Technical Data Sheet Ball Screw Brake The Nexen Ball Screw Brake is a high-torque, spring-engaged brake acting on the machined end of a ball screw. It serves as a primary or redundant safety brake to prevent back driving if a power loss or mechanical defect occurs in the driveline. The low backlash and coupling combination provides a high degree of accuracy for holding ball screw position. An expanding shaft/clamping hub coupling connects the brake shaft to the end of the ball screw. This coupling comes with an elastomer insert with high torsional stiffness. Hover your mouse over certain areas of this PDF to see the cursor change to a "hand". These areas can be selected to connect you directly to a specific website page. The interactive areas are primarily found in the headers of the selection charts. Features • Low backlash for precision holding • Spring engaged, air released • Low inertia • High torsional rigidity • Bi-directional braking • Fast engagement • Meets IP67 dust and waterproof standards • Operates in vertical and horizontal applications Allows thermal expansion of ball screw

K (Maximum shaft insertion) A, Bore Diameter (Select from Coupling Table) Figure 1 Model Size Product Numbers (Bore Range) Torque = 5 Nm (44 in-lbs) * Clearance Hole Diameter 1 NOTE: When selecting a brake, a coupling must also be selected. See the coupling chart on the next page. Brake Specifications Model Size Minimum Holding Torque Release Pressure Maximum Speed Nm/radian [lb-ft/radian] Torsional Rigidity

Back Drive Torque = L = Screw Lead in inches P = Load in pounds e = mechanical efficiency of 0.9 pi = 3.1416 Back Drive Torque = L = Screw Lead in millimeter P = Load in Newtons e = mechanical efficiency (0.9) pi - 3.1416 Product Number Valve Effective Orifices Port Size Voltage DIN Connector Power Consumption 964650 Normally Closed 0.062 Body 0.089 Exhaust Port 1/8-27 NPT Male 24VDC Included 25 Watts nexen Nexen Group, Inc. 560 Oak Grove Parkway Vadnais Heights, MN 55127 In accordance with Nexen's established policy of constant product improvement, the specifications contained in this document...