ROTARY MOTION CONTROL Application & Selection Guide Eclipse® Servomotor Brakes o —s _ o O co

The Nexen Eclipse® Advantage Tracing its roots back to 1902, Nexen's long history of innovation and quality show a legacy of advancing the motion control industry through its commitment to product development. Continually testing and improving products as well as developing new technology, Nexen's contribution to the industry is now illustrated in the expanded Eclipse® line of servomotor brakes. With over 140 models in seven bore sizes, Nexen offers an off-the-shelf braking solution for any servo application. These spring-engaged, air released brakes eliminate the performance problems associated...

Eclipse® Brakes offer at least 20-50% more torque than competitive brakes. Standard Electric Servomotor Brake limited torque capabilities Nexen Eclipse® Servomotor Brakes Dependable Power Ensures Safety When it comes to service factor, Nexen believes more is better. More torque and high brake stiffness mean operators and equipment are protected. Strong enough to stall a servomotor in continuous torque mode, the high torque ratings on Eclipse® brakes provide fast response with a short stopping distance in emergency situations. In fact, Nexen's servomotor brakes deliver at least 20-50% more torque...

Eclipse® Brake Cross-Sectional Drawings Cross-Sectional Drawings Input Flange O-ring Seals Ball Bearing Clamping Collar Output Shaft Piston Wave Spring Air Input NOTE: Size 5 contains a single row, deep groove ball bearing. Sizes 2,3 and 4 contain a double row. Friction Facing O-ring Seals Input Flange Output Shaft Clamping Collar Ball Bearing Compression Springs Spring Backing Plate

Eclipse® Dimensions The following section contains the approximate dimensions for each size of Nexen's Eclipse® Servomotor Brakes. Always verify product information with the user manual when specifying a new brake into your application. Refer to www.nexengroup.com for user manuals, product dimensions and specifications. Dimensions NEMA Square Flange

Servomotor Brake Approximate Dimensions (iec Square Flange Motors: sizes 2 & 3) Size 2 Product Number All dimensions shown in millimeters unless otherwise specified.

Size 4 Product Number

Size 5 Product Number

Size 7 Product Number

Servomotor Brake Approximate Dimensions (iec Square Flange Motors: sizes 9 & 11) Size 9 Product Number All dimensions shown in millimeters unless otherwise specified.

Eclipse® Servomotor Brakes Deliver: High Torque • High Torsional Rigidity • Low Inertia Metric Square Flange Sizes Product Number See appendix for specification definitions.

Product Number See appendix for specification definitions. 12

Specifications See appendix for specification definitions. 13

Servomotor Brake Specifications (metric size 9 & 11) Static Torque Transmittable Torque Torsional Rigidity Product Number Engage Release Time Time msec Overhung Load Shaft Inertia Minimum Release Pressure Size 9 NOTE: These models are intended for direct mounting. Side loading is not recommended. Consult Nexen Engineering with questions. Size 11 NOTE: Intended for direct mounting. Side loading is not recommended. Solenoid Valve See appendix for specification definitions. Optional Solenoid Valve Nexen's optional solenoid valve offers machine operators additional safety and peace of mind by allowing...

BACKLASH Because zero backlash is impossible to measure, industry standard maintains that anything under 3.2 microns is considered zero. The Eclipse® line of servomotor brakes have two design features that facilitate backlash-free performance. Both the keyless, split-hub clamping collar and the one piece rotor/shaft work to create a backlash free environment. The unique rotor/shaft actually lowers inertia and minimizes moving parts. CORROSION RESISTANCE Nexen offers various corrosion countermeasures that include stainless steel and various surface treatments or coatings. Nexen will convey all...

MEDICAL PRODUCTS GANTRY SYSTEMS PACKAGING CONVEYING INDUSTRIES & APPLICATIONS ROBOTICS AUTOMOTIVE MACHINE TOOL RENEWABLE ENERGY www.nexengroup.com In accordance with Nexen’s established policy of constant product improvement, the specifications contained in this document are subject to change without notice. Technical data listed in this document are based on the latest information available at the time of printing and are also subject to change without notice. For current information, please consult www.nexengroup.com or contact Nexen’s Technical Support Group at the location to the right. Nexen...