Servomotor Brakes Technical Data Sheet Eclipse® Standard Servomotor Brake Page 4 NexSafe® Safety Rated Servomotor Brakes Page 16 Certified Safety Products

The Nexen Servomotor Brake 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, Nexen offers an off-the-shelf braking solution for any servo application. These spring-engaged, air released brakes offer consistent, long lasting performance. Smooth Torque...

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, Gantry Router Rectangular Robot In emergency stopping situations, Eclipse® brakes stop the load(s) quickly and safely with bidirectional braking capabilities. Able to repeatedly stop and hold in challenging cyclic operations, Nexen...

Eclipse Brake Cross-Sectional Drawings Sizes 2, 3, 4, 5 Standard Units Friction Facing Input Flange Sensor Equipped and NexSafe Safety Rated Units Air Chamber Input Flange Spring Guide/ Sensor Target Ball Bearing Coil Springs Clamping Collar Integrated into Output Shaft Output Shaft O-ring Seals Wave Spring Ball Bearing Clamping Collar Friction Facing Output Shaft O-ring Seals Optional Sensors: -Disengagement -Engagement -Wear Note: Size 5 contains a single row, deep groove ball bearing. Sizes 2, 3 and 4 contain a double row. Sizes 7, 9, 11 Standard Units Sensor Equipped and NexSafe Safety Rated...

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. Servomotor Brake Approximate Dimensions (NEMA Square Flange Motors) B Contact Nexen if one or more of these dimensions must be modified for your application. NEMA Square Flange Nexen Model Bore Diameter Bore Depth Pilot (female) Pilot Depth Bolt Circle Diameter Flange Width Bolt...

Servomotor Brake Appoximate Dimensions (Metric Square Flange Motors, Sizes 2 & 3) B Contact Nexen if one or more of these dimensions must be modified for your application. Size 2 Product Number Bore Pilot Pilot Bolt Circle Flange Depth (Female) Depth Dia. Width Bolt Hole Quick Shaft Exhaust Dia. Shaft Length Pilot Bolt Circle Keyway (Male) Dia. Q Shaft Pilot Length Ext. Bolt Hole Size 3 Product Number 964721 Bore Pilot Pilot Bolt Circle Flange Depth (Female) Depth Dia. Width Bolt Quick Length Hole Exhaust Pilot (Male) Bolt Circle Keyway Dia. Inch, all other dimensions are mill

Servomotor Brake Approximate Dimensions (Metric Square Flange Motors: Size 4) B Bore Pilot Pilot Bolt Circle Depth (Female) Depth Dia. Flange Width Bolt Hole Quick Shaft Shaft Pilot Exhaust Dia. Length Ext. *Inch, all other dimensions are millimeter Contact Nexen if one or more of these dimensions must be modified for your application. Size 4 Product Number Bolt Hole Pilot Bolt Circle Keyway (Male) Dia.

Servomotor Brake Approximate Dimensions (Metric Square Flange Motors: Size 5) B Contact Nexen if one or more of these dimensions must be modified for your application. Size 5 Product Number Bore Pilot Pilot Bolt Circle Depth (Female) Depth Diameter Flange Width Bolt Hole Quick Exhaust Shaft Pilot Length Ext. Bolt Hole Pilot (Male) Bolt Circle Keyway Dia. Inch, all other dimensions are millimeter

Servomotor Brake Approximate Dimensions (Metric Square Flange Motors: Size 7) J Quick Exhaust Valve Contact Nexen if one or more of these dimensions must be modified for your application. Size 7 Product Number Bore Pilot Pilot Depth (Female) Depth Flange Width Bolt Hole Quick Exhaust Shaft Length Bolt Hole Pilot (Male) Inch, all other dimensions are millimeter

Servomotor Brake Approximate Dimensions (Metric Square Flange Motors: Sizes 9 & 11) J Quick Exhaust Valve Contact Nexen if one or more of these dimensions must be modified for your application. Size 9 Product Number Bore Pilot Pilot Depth (Female) Depth Flange Width Bolt Hole Quick Exhaust Shaft Length Bolt Hole Pilot (Male) Flange Width Bolt Hole Quick Exhaust Shaft Length Bolt Hole Pilot (Male) Size 11 Product Number Bore Pilot Pilot Depth (Female) Depth *Inch, all other dimensions are millimeter

Eclipse Performance Eclipse Servomotor Brakes deliver: High Torque, High Torsional Rigidity and Low Inertia Servomotor Brake Specifications NEMA Square Flange Compatible Product Number Static Torque (inlbf) Transmittable Torque Rating (inlbf) Torsional Rigidity (lbfft/rad) Engage Time (msec) Release Time (msec) Release Time (msec) Minimum Release Pressure (psi) Minimum Release Pressure (bar) Nexen Model SBP-4 for NEMA 42 Metric Square Flange Sizes Product Number Transmittable Torque Rating (Nm) Torsional Rigidity (Nm/rad) Engage Time (msec) Contact Nexen if one or more of these specifications...

Servomotor Brake Specifications (Metric Square Flange Motors: Size 4) Product Number Transmittable Static Torque Torque Rating (Nm) (Nm) Torsional Rigidity (Nm/rad) Engage Time (msec) Release Time (msec) Minimum Release Pressure (bar) Contact Nexen if one or more of these speciations must be modified for your application, or if a NexSafe safety rating is required. See appendix for specification definitions.

Servomotor Brake Specifications (Metric Square Flange Motors: Size 5 & 7) Product Number Transmittable Torque Rating (Nm) Torsional Rigidity (Nm/rad) Engage Time (msec) Release Time (msec) Minimum Release Pressure (bar) NOTE: These models are intended for direct mounting. Side loading is not recommended. Consult Nexen Engineering with questions. NOTE: These models are intended for direct mounting. Side loading is not recommended. Consult Nexen Engineering with questions. Contact Nexen if one or more of these specifications must be modified for your application, or if a NexSafe safety rating is...