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Torsionally Rigid Gear Couplings - ZAPEX ZN Series

  • Информационные материалы

    Информационные материалы

    Coupling suitable for potentially explosive environments. Complies with Directive 94/9/EC for:

    II 2 GD c 120 °C (T4)
    -20 °C ≤ Ta ≤ +80 °C

    I M2

    Materials

    • Hubs and flanged sleeves: steel
    • O ring: perbunan
    • Lubricant: grease filling

    Область применения

    ZAPEX couplings are especially suited for operation in harsh operating conditions, such as drives in the iron smelting or cement industry. ZAPEX couplings are suitable for reverse operation and horizontal mounting positions and, in the case of type ZNNV, for vertical mounting positions.

    Дизайн

    A ZAPEX coupling comprises two hub sections with external teeth which are mounted on the machine shafts. The external teeth engage with a flanged sleeve with corresponding internal teeth. The flanged sleeves are connected via two flanges with close-fitting bolts.

    The teeth are lubricated with grease. On the ZAPEX type ZN, O-rings are used to seal the tooth space. The O-rings prevent the lubricant from escaping and dirt from entering the tooth space. The parallel keyways must be sealed during assembly to prevent lubricant from escaping.

    Customized hub designs are described after the types.

    ZAPEX ZN gear coupling types

    Type

    Description

    ZNN

    Standard type

    ZNZS

    With adapter

    ZNW

    With intermediate shaft

    ZNBG

    With straight brake disk

    ZNNA

    With axial backlash limiter

    ZNZA

    With adapter and axial backlash limiter

    ZNNV

    Vertical type

    ZNN

    For axial displacement



    Further application-related coupling types are available.
    Dimension sheets for and information on these are available on request.

    Особенности

    ZAPEX gear couplings link machine shafts and compensate for shaft misalignment with weak restorative forces. High transmissible torque combined with compactness and light weight are characteristic of ZAPEX couplings. ZAPEX coupling types are constructed on a modular principle, so application-related solutions can be delivered quickly.

    This coupling requires very little maintenance. Regular grease changes at the prescribed intervals prolong the service life of the coupling.

    Технические данные

    Power ratings

    Size

    Rated torque

    Maximum torque

    Overload torque

    Fatigue torque

    Torsional stiffness

    Permitted shaft misalignment

         

    ZN

     
     

    TKN

    TKmax

    TKOL

    TKW

    CTdyn

    ΔKa

     

    Nm

    Nm

    Nm

     

    kNm/rad

    mm

    84

    1 020

    2 040

    4 080

    408

    500

    1

    107

    2 210

    4 420

    8 840

    884

    1 400

    1

    130

    4 020

    8 040

    16 080

    1 600

    2 500

    1

    156

    6 600

    13 200

    26 400

    2 640

    5 800

    1

    181

    11 000

    22 000

    44 000

    4 400

    9 200

    1

    211

    19 200

    38 400

    76 800

    7 680

    16 600

    1

    250

    30 680

    61 360

    122 720

    12 270

    27300

    1

    274

    43 550

    87 100

    174 200

    17 400

    41500

    1.5

    307

    61 750

    123 500

    247 000

    24 700

    61 000

    1.5

    333

    87 100

    174 200

    348 400

    34 800

    79 000

    1.5

    364

    117 000

    234 000

    468 000

    46 800

    99 000

    1.5

    424

    162 500

    325 000

    650 000

    64 800

    156 000

    1.5



    The specified torsional stiffness “ZN” applies to coupling types ZNN, ZNNA, ZNNV and ZNN for axial displacement.

    Torsional stiffness of types ZNZS, ZNW, ZNBT, ZNBG, ZNZA and ZNZN on request.

    The axial misalignment ΔKa must be understood as the maximum permitted enlargement of the hub distance S of the coupling.

    Angular misalignment ΔKW

    • Types ZNN, ZNZS, ZNW, ZNNV, ZNN for axial displacement: ΔKW = 0.5°
    • Types ZNBG, ZNNA, ZNZA: ΔKW = 0.2°

    Radial misalignment ΔKr

    • Types ZNN, ZNZS, ZNW, ZNNV, ZNN for axial displacement: ΔKR ≤ VA · tan 0.5°
    • Types ZNBG, ZNNA, ZNZA: ΔKr ≤ VA · tan 0.2°

    For the tooth distance VA, see the relevant table for the subassembly.