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    1. Product Directory
    2. Motion Control

    High-Torque, Zero Backlash Brake

    Sept. 7, 2016
    For Indexing and Positioning Systems
    Related To: Nexen Group Inc
    66673d1994f10f0008372323 830 350

    Model I-300 spring engaged, air released, power-off brake is designed to provide high torque for backlash-free holding and emergency stopping on indexers and positioning systems. The I-300’s high torque and short response time ensure the shortest possible stopping distance.

    The brake connects to the shaft with tapered, keyless locking devices. It is normally engaged until air pressure is applied to release it. Nexen’s patented braking element locks and holds the shaft in position without any displacement upon engagement or reversing of the load.

    Key features for the I-300 brake include:

    • Zero Backlash for precise holding
    • High dynamic torque: 5300 in-lbs. (600 Nm)  
    • Torsionally stiff:  6,152,148 ft-lbs. per radian  (8,341,193 Nm/rad)
    • Spring engaged, air released: 60 psi (4.1 bar)
    • Engagement response time: 85 milliseconds
    • Stackable for double the braking torque
    • Horizontal or vertical mounting
    • Flange mounts to machine frame
    • Mounts to a bearing supported shaft

     

    Features:

    True Zero Backlash, High Torque, Spring Engaged Bake

    Comments:

    IP67 Rated When End Mounted And Sealed To Machine Frame

    Comments:

    Mounting Bushings Available From B-Loc, Lovejoy, Ringfeder, And Others. See Technical Data Sheet In Left Column.

    Actuator Cycle Life:

    1,000,000 Static Holding Cycles, E-Stops Or Dynamic Dynamic Stops Contact Nexen

    Open Or Enclosed Design:

    Enclosed

    Bore Size:

    65 mm

    Bore Style:

    Straight Keyless Bore With Customer Supplied Mechanical Compression Coupling

    Over All Length:

    105.0 mm

    Over All Diameter:

    280.0 mm

    Minimum Static Brake Torque:

    600 Nm

    Brake Peak Thermal Input Rate:

    17.00 hp

    Shaft Inertia:

    211.60 kgcm²

    Max Rpm:

    2000

    Actuation/Return:

    Spring/Air

    Port Size:

    0.250 BSPT

    Maximum Pressure:

    6.9 bar

    Minimum Release Pressure:

    4.1 Bar

    Temperature Range:

    4.4 - 93°C

    Coupling Brand/Type:

    Mechanical Keyless Compression Bushing *Customer Supplied*

    Torsional Rigidity:

    8,341,193 Nm/rad

    Ratings:

    IP67 When Input Is Sealed To Machine Frame, CE, And RoHS

    Finish:

    Black Acrylic Paint

    Restrictions:

    Not Recommended For Cyclic Dynamic Braking

     

    Other Bore Sizes Available Upon Request

    Weight:

    66.0 LB