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ARPEX ARC-8/-10 series

  • Информационные материалы

    Информационные материалы

    Coupling can be designed for potentially explosive environ­ments in accordance with 94/9/EC.

    Область применения

    ARPEX couplings of the ARC-8 and ARC-10 series are outputand speed-optimized coupling solutions. Power transmission is by means of patented conical screw connections and plate packs of the octagonal and decagonal types. Torques of between 8.5 and 1450 kNm can be transmitted at a permitted angular misalignment of 0.2° to 0.4°. The closed flange shape and a compact construction permit high peripheral speeds and high speeds. On most types, the intermediate spacer can be radially fitted without moving the connected units.

    Main areas of application for the ARC-8/-10 series:

    • Paper-making machines
    • Printing machines
    • Compressors
    • Fans and blowers
    • Generators
    • Presses
    • Conveyors
    • Crane systems
    • Pumps
    • Mills
    • Rotary furnaces
    • Stirrers

    Дизайн

    The classic design of an ARPEX coupling of the ARC-8/-10 series type NEN is shown in the following illustration. The plate packs are bolted alternately between the flanges of the coupling hubs and the intermediate spacer. Conical screw connections are used for fastening. The intermediate spacer lengths are variably designed according to customer specifications.

    Design of an ARPEX coupling, ARC-8/-10 series, type NEN

    Variants of the ARPEX coupling, ARC-8/-10 series

    Types

     

    NEN

    Variant with intermediate spacer machined on all sides, length variable

    NHN

    Variant with unmachined intermediate spacer, length variable

    BUB

    Compact variant with split intermediate spacer for short shaft distances

    MFEFM

    Variant with preassembled intermediate unit and machined intermediate spacer, length variable

    MFHFM

    Variant with preassembled intermediate unit and unmachined intermediate spacer, length variable



    The coupling parts of the ARPEX ARC-8/-10 series with the exception of the H spacers have been machined on all sides. These are delivered with unmachined and primed spacer tube.

    Further application-specific coupling types are available in selection module x.CAT at www.flender.com . Dimension sheets and further information are available on request.

    Особенности

    ARPEX couplings of the ARC-8/-10 series are outstanding for their robust construction. They have been optimized for high torques combined with high speeds. The patented conical screw connection ensures reliable torque transmission by a true positive fit and is designed to be extremely easy to fit. Couplings can be designed for potentially explosive environments in accordance with 94/9/EC.

    Технические данные

    Power ratings

    Size

    Rated torque

    Maximum torque

    Overload torque

    Fatique torque

    Maximum speed

    Maximum permitted shaft misalignment

    Torsional stiffness

     

    TKN

    TKmax

    TKOL

    TKW

    nKmax

    ±ΔKa

    ±ΔKw

    ±ΔKr

    CTdyn

            

    NEN
    NHN

    BUB

    MFEFM
    MFHFM

    NEN
    for

    NHN

    BUB

    MFEFM
    for

    MFHFM

            

    S = 1000 mm

     

    S = 1000 mm

    Smin

    S = 1000 mm

     

    Smin

    S = 1000 mm

     

    kNm

    kNm

    kNm

    kNm

    rpm

    mm

     

    mm

    mm

    mm

    MNm/rad

    MNm/rad

    MNm/rad

    MNm/rad

    MNm/rad

    225-8

    8.5

    17

    25.5

    4.25

    8500

    1.94

    0.4°

    6.87

    0.96

    6.53

    3.1

    0.9368

    3.0

    3.1

    0.9748

    255-8

    12.7

    25

    38.1

    6.35

    7500

    2.32

    6.86

    1.10

    6.51

    3.8

    1.2778

    3.7

    3.8

    1.3295

    270-8

    16.5

    33

    49.5

    8.25

    7000

    2.40

    6.88

    1.10

    6.52

    5.4

    1.7339

    5.1

    5.4

    1.8072

    295-8

    23

    46

    69

    11.5

    6500

    2.62

    6.86

    1.17

    6.44

    7.1

    2.6134

    6.7

    7.1

    2.7358

    325-8

    33

    66

    99

    16.5

    6000

    2.60

    6.84

    1.38

    6.34

    9.6

    3.9537

    9.4

    9.6

    4.1715

    355-8

    45

    90

    135

    22.5

    5500

    2.88

    6.83

    1.42

    6.28

    12.8

    5.6093

    12.5

    12.8

    5.9339

    385-8

    56

    112

    168

    28

    5000

    3.12

    6.81

    1.63

    6.22

    17.8

    7.8517

    17.0

    17.8

    8.3555

    420-8

    70

    140

    210

    35

    4500

    3.46

    6.79

    1.78

    6.14

    22.9

    10.8175

    21.9

    22.9

    11.5763

    455-8

    88

    176

    264

    44

    4200

    4.02

    6.78

    1.89

    6.11

    30.0

    14.2794

    28.2

    30.0

    15.2998

    505-8

    120

    240

    360

    60

    3800

    4.28

    6.77

    2.41

    6.04

    40.2

    20.9046

    36.4

    40.2

    22.4421

    545-8

    165

    330

    495

    82.5

    3500

    4.48

    6.75

    2.67

    5.98

    50.4

    28.7428

    45.0

    50.4

    30.7848

    595-8

    210

    420

    630

    105

    3200

    4.86

    6.73

    2.88

    5.89

    67.8

    39.5343

    59.5

    67.8

    42.5997

    630-8

    260

    520

    780

    130

    3000

    4.98

    0.3°

    4.93

    2.10

    4.14

    61.8

    42.6162

    61.2

    61.8

    46.3697

    700-8

    340

    680

    1020

    170

    2700

    5.78

    4.91

    2.38

    4.06

    84.9

    60.2135

    83.1

    84.9

    65.8083

      

    S = 1500 mm

     

    S = 1500 mm

     

    S = 1500 mm

      

    S = 1500 mm

    630-10

    340

    680

    1020

    170

    3000

    3.04

    0.2°

    5.03

    1.40

    4.50

    94.6

    46.9832

    94.4

    94.6

    50.5520

    700-10

    430

    860

    1290

    215

    2700

    3.60

    5.02

    1.58

    4.45

    135

    72.3106

    132

    135

    77.9729

    760-10

    550

    1100

    1650

    275

    2500

    3.70

    4.98

    1.60

    4.30

    173

    91.7589

    180

    173

    101.228

    860-10

    770

    1540

    2310

    385

    2200

    4.82

    4.95

    1.86

    4.21

    244

    145.230

    245

    244

    160.422

    950-10

    1050

    2100

    3150

    525

    2000

    5.40

    4.91

    1.92

    4.09

    325

    204.443

    338

    325

    227.957

    1035-10

    1450

    2900

    4350

    725

    1850

    5.78

    4.88

    1.95

    3.97

    426

    292.140

    455

    426

    326.930



    The permitted shaft misalignments ΔKa, ΔKr and ΔKw are maximum values and must not occur at the same time (see following table).
    The specified, permitted shaft misalignment ΔKr for types NEN/NHN and MFEFM/MFHFM applies to a shaft distance of S = 1000 mm (ARC-8) or S = 1500 mm (ARC-10).
    The permitted shaft misalignment ΔKr for types NEN and NHN is calculated as follows: ΔKr = (S – S1) · tan(ΔKw).
    The permitted shaft misalignment ΔKr for types MFEFM and
    MFHFM is calculated as follows:
    ΔKr = (S – S1 – 2 · BF) · tan(ΔKw).

    The values for torsional stiffness apply to the complete coupling. In the case of types NHN and MFHFM to a coupling with shaft distance S = 1000 mm (ARC-8) or S = 1500 mm (ARC-10). The torsional stiffness of the plate packs applies to the rated coupling torque TKN. To determine the torsional stiffness for a specific operating point, e.g. for calculating torsional vibration, the manufacturer must be consulted.

    TKmax permitted only five times per hour.

    Permitted shaft misalignments

    Size

    Permitted angular misalignment ±ΔKw

     

    0.0°

    0.1°

    0.2°

    0.3°

    0.4°

     

    Permitted axial misalignment ±ΔKa in mm

    225-8

    1.94

    1.46

    0.97

    0.48

    0.00

    255-8

    2.32

    1.74

    1.16

    0.58

    0.00

    270-8

    2.40

    1.80

    1.20

    0.60

    0.00

    295-8

    2.62

    1.96

    1.31

    0.66

    0.00

    325-8

    2.60

    1.95

    1.30

    0.65

    0.00

    355-8

    2.88

    2.16

    1.44

    0.72

    0.00

    385-8

    3.12

    2.34

    1.56

    0.78

    0.00

    420-8

    3.46

    2.59

    1.73

    0.86

    0.00

    455-8

    4.02

    3.01

    2.01

    1.00

    0.00

    505-8

    4.28

    3.21

    2.14

    1.07

    0.00

    545-8

    4.48

    3.36

    2.24

    1.12

    0.00

    595-8

    4.86

    3.65

    2.43

    1.22

    0.00

    630-8

    4.98

    3.32

    1.66

    0.00

     

    700-8

    5.78

    3.85

    1.93

    0.00

     

    630-10

    3.04

    1.52

    0.00

      

    700-10

    3.60

    1.80

    0.00

      

    760-10

    3.70

    1.85

    0.00

      

    860-10

    4.82

    2.41

    0.00

      

    950-10

    5.40

    2.70

    0.00

      

    1035-10

    5.78

    2.89

    0.00