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Torsionally rigid gear couplings ZAPEX ZW 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

    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 ZWNV, for vertical mounting positions.

    Дизайн

    A ZAPEX coupling comprises two hub sections with external teeth which are mounted on the machine shafts. Each set of external teeth engages in a flanged socket with mating internal teeth. The flanged sleeves are connected via two flanges with close-fitting bolts.
    The teeth are lubricated with oil or grease. On the ZAPEX type ZW, DUO sealing rings are used to seal the tooth space. The DUO sealing 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 ZW gear coupling types

    Type

    Description

    ZWN

    Standard type

    ZZS

    with adapter

    ZZW

    with intermediate shaft

    ZWH

    with coupling sleeve

    ZWBT

    with offset brake disk

    ZWBG

    with straight brake disk

    ZWB

    with brake drum

    ZWTR

    for rope drums

    ZBR

    with shear pins

    ZWS

    Clutch

    ZWNV

    Vertical type

    ZWSE

    Simple clutch-coupling combination



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

    Функции

    The torque is transmitted through the coupling teeth. The teeth are crowned, so angular displacement per tooth plane is possible. Radial displacement can be compensated for via the space VA between the tooth planes. The internal teeth of the flanged sleeves are significantly wider than the external teeth of the hub parts, permitting a relatively high axial misalignment.

    A small angular misalignment on the coupling teeth results in an advantageous distribution of the lubricant film and a very low wear rate. This favorable condition can be deliberately set by aligning the drive with the machine shafts with a slight radial misalignment.

    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. This means that applicationspecific solutions can be delivered quickly. ZAPEX couplings require very little maintenance. Regular grease or oil changes at the prescribed intervals prolongs the service life of the coupling.

    Технические данные

    Power ratings

    Size

    Rated torque

    Maximum torque

    Overload torque

    Fatigue torque

    Torsional stiffness

    Permitted shaft misalignment

         

    ZW

     
     

    TKN

    TKmax

    TKOL

    TKW

    CTdyn

    ΔKa

     

    Nm

    Nm

    Nm

    Nm

    kNm/rad

    mm

    112

    1300

    2600

    5200

    520

    2000

    1.0

    128

    2500

    5000

    10000

    1000

    3600

    1.0

    146

    4300

    8600

    17200

    1720

    6900

    1.0

    175

    7000

    14000

    28000

    2800

    9360

    1.0

    198

    11600

    23200

    46400

    4640

    15600

    1.0

    230

    19000

    38000

    76000

    7600

    26300

    1.0

    255

    27000

    54000

    108000

    10800

    33400

    1.5

    290

    39000

    78000

    156000

    15600

    44000

    1.5

    315

    54000

    108000

    216000

    21600

    64100

    1.5

    342

    69000

    138000

    276000

    27600

    81600

    1.5

    375

    98000

    196000

    392000

    39200

    115600

    1.5

    415

    130000

    260000

    520000

    52000

    106000

    1.5

    465

    180000

    360000

    720000

    72000

    134600

    2.0

    505

    250000

    500000

    1000000

    100000

    168700

    2.0

    545

    320000

    640000

    1280000

    128000

    216900

    2.0

    585

    400000

    800000

    1600000

    160000

    263200

    2.0

    640

    510000

    1020000

    2040000

    204000

    356000

    2.0

    690

    660000

    1320000

    2640000

    264000

    431000

    2.0

    730

    790000

    1580000

    3160000

    316000

    538000

    2.0

    780

    1000000

    2000000

    4000000

    400000

    696000

    3.0

    852

    1200000

    2400000

    4800000

    480000

    926000

    3.0

    910

    1600000

    3200000

    6400000

    640000

    1118000

    3.0

    1020

    1900000

    3800000

    7600000

    760000

    1339000

    3.0

    1080

    2200000

    4400000

    8800000

    880000

    1605000

    3.0

    1150

    2700000

    5400000

    10800000

    1080000

    2120000

    3.0

    1160

    3350000

    6700000

    13400000

    1340000

    2474000

    3.0

    1240

    3800000

    7600000

    15200000

    1520000

    3079000

    3.0

    1310

    4600000

    9200000

    18400000

    1840000

    3693000

    4.0

    1380

    5300000

    10600000

    21200000

    2120000

    4383000

    4.0

    1440

    6250000

    12500000

    25000000

    2500000

    5056000

    4.0

    1540

    7200000

    14400000

    28800000

    2880000

    6115000

    4.0



    In the case of type ZWTR, the rated torques which deviate from the above are specified in the dimension table.

    The stated torsional stiffness "ZW" applies to coupling types ZWN and ZWNV.
    Torsional stiffness of the remaining types 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 ZWN, ZZS, ZZW, ZWH, ZWB, ZBR, ZWS: ΔKW = 1°
    • Types ZWBT and ZWBG: ΔKW = 0.2°
    • Type ZWSE: ΔKW = 0.4°

    Radial misalignment ΔKr

    • Types ZWN, ZZS, ZZW, ZWH, ZWB, ZBR, ZWS und ZWSE: ΔKr ≤ VA · tan 1°
    • Types ZWBT and ZWBG: ΔKr ≤ VA · tan 0.2°

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