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METAL DISC TYPE SHAFT FLEXIBLE COUPLINGS

TORSIONALLY STIFF ALL METAL COUPLINGS SHAFTS
4 TO 150MM

Techdrives offer 3 ranges of high performance metal disc couplings from supply partner Mönninghoff - the Mini Servoflex, Servoflex and Arcoflex covering shafts from 4 to 150 mm, torques 1 to 23000Nm. Suiting precision machinery, these couplings are torsionally stiff and backlash free.  They are compact, can run at high speeds and need no maintenance.


Many models are available from stock.  Hubs with clamp connection can replace keyways.  Spacer versions up to 5m long are possible.


Type: All metal bolted assemblies that are torsionally very stiff and backlash free.


Construction: Laminated steel disc packs are assembled with bolt fixings between alloy or steel hubs, Single flexing (1 disc pack) models accept only radial misalignment.  Double flexing models accept parallel and radial misalignment.


Type 328 Mini-Servoflex

Type 318 Servoflex with steel hubs

Type 338 Servoflex with aluminium hubs

Type 314 Arcoflex

Spacer couplings available for types 314, 318 and 338.


Applications: All these metal disc couplings can be used with high ambient temperatures of 150 or even 270°C. Angular misalignment is 1 to 2° and high radial offsets are possible by using central spacer elements.  All these models are backlash free which eliminates wear in reversing drives.  The torsional stiffness (rigidity) is very high, typically around 10 minutes of arc at rated torque, which allows accurate positioning and registration.  


Normally couplings with two flexible discs are used because they accept parallel shaft misalignment.  Metal disc couplings with a single disc are used when the shaft on one side has only a single support bearing.


The type 328 Mini Servoflex is used for encoder connection and small precision machinery.  Types 318 Servoflex and 314 Arcroflex are used for printing machines, line shafts, test rigs and other heavier process machinery.  An important factor is that they need no maintenance unlike alternatives of gear couplings, grid couplings or universal joints.


Spacer couplings are used in line shafts, printing machines and lifting systems.  They are manufactured with precision to allow high speed running.

DOWNLOADS


Type


Size


Rated torque 1 Nm


Outside dia
mm


Length 2
mm


Max
bore
mm



Mini-Servoflex

8

1

19

26

8

10

2

26

32

10

14

3

34

38

14

16

6

39

48

16

19

10

44

48

19

25

25

56

60

25



Servoflex

20

35

56

74

20

25

60

68

88

25

35

150

82

98

35

38

200

94

106

38

42

300

104

118

42

50

500

128

140

55




Arcoflex

55

800

128

206

65

65

1200

145

246

75

75

1800

168

286

85

80

2800

180

300

100

85

4500

200

300

100


90

6000

215

340

110

98

9000

250

370

120

120

23000

310

452

150

mini-servoflex metal disc coupling servoflex metal disc coupling Arcoflex metal disc coupling

See the catalogue pages/data sheets for more information

  1. Based on 0.5 degrees misalignment per disc pack.  
    Higher misalignment and reversing will reduce the capacity.
  2. Based on double flexing standard design, but other variants available.

LINKS

Spacer coupling