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TSCHAN® POSIMIN® - UZU

Double engagement design for minimum shaft distance

The TSCHAN®-Coupling POSIMIN® is a torsionally rigid steel disk coupling. It compensates for angular, radial and axial shaft misalignments within defined ranges. The coupling transmits torque without backlash through flexible steel disks loaded in tension. The spacer can be radially mounted and dismounted without having to move the connected machines. The distance dimension ‘E’ between the flange hubs can then be used, for example, to service connected machines. When the spacer is dismounted, a check of the rotational direction of the drive can easily be performed. The coupling is suitable for use in every direction of rotation and installation position. For applications involving other than horizontal position, it may be necessary to support the spacer. Please consult RINGFEDER POWER TRANSMISSION, if this has not been considered when selecting the coupling.

UZU

CAD Size TKN TKmax n1) d1, d2 E L1 D4 D5 S1 S2
    [Nm] [Nm] [min -1]              
  3 80 166 13900 24 4 30 69 34 7 7.8
  5 110 200 11500 31 4 35 83 44 7 7.8
  10 150 270 10300 39 4 40 93 55 7 7.8
  21 360 650 8100 48 4 50 118 67 9 10.7
  42 500 900 7200 57 4 60 133 80 9 10.7
  66 900 1600 6100 65 4 70 156 91 9 11.6
  105 1400 2500 5700 72 4 75 168 101 12 12.5
  168 2400 4300 5150 74 6 80 186 103 13 13.4
  260 2900 5200 4900 80 6 90 196 111 13 13.4
  330 4400 8000 4300 87 6 100 222 120 18 22.8
  520 5200 9400 4030 96 6 110 237 134 18 22.8
  660 7700 13900 3650 94 10 115 262 131 20 24.4
  840 8300 15000 3450 104 10 125 278 145 20 24.4
  1200 15000 27000 2900 123 10 145 330 171 25 32
  1650 18000 32400 2600 145 10 170 365 202 25 32
  2500 28000 50400 2250 168 10 200 425 235 30 38
  3200 32000 57600 2100 190 10 225 460 265 30 38
  4700 47000 84600 1900 207 12 245 510 291 36 44
  6000 72000 130000 1650 230 12 275 580 323 41 50
  8000 80000 144000 1500 270 12 325 645 380 41 50

POSIMIN® UZU

Coupling with standard spacer for minimal shaft distance. Not radially removable without aggragate displacement.

General features

  • Torsionally rigid multiple disk coupling
  • Suitable for use in higher temperature ranges
  • Compensates for angular, radial and axial shaft offset
  • No maintenance required, no wear, high operational safety
  • Excellent true running quality
  • Backlash-free torque transmission
  • Outer diameter up to 460 mm, bores up to 225 mm
  • Torques up to TKn = 32,000 Nm / TKmax = 57,600 Nm
  • Speeds up to nmax = 13,900 rpm

General description

POSIMIN® all-steel, multiple disc couplings are torsionally rigid, free from backlash, flectionally elastic and maintenance­ free. They fulfill individual requirements in a compact way, using standard elements in a unit construction system.

Advantages

  • High operation reliability
  • Maintenance-free
  • Wear-resistant
  • Small outer diameters permit small mounting spaces and high speeds in cases where torque transmission is high
  • Easy fitting due to a one-piece spacer and pre-assembled disc packs
  • Inserted bushes fix and centre the disc pack on to the intermediate casing
  • A high degree of balance due to the minimal number of surfaces to be centred
  • Backlash-free  power transmission due to discs of stainless spring steel

Free from backlash

The power transmitting POSIMIN coupling disc pack guarantees a torque transmission which is free from backlash in both directions of rotation, as a result of the frictionally engaged and form-fit linkage at each of 3 points.

Torsionally rigid

POSIMIN couplings are made of high grade C-Steels and the disc packs of corrosion-resistant spring steel.The coupling transmits the torque homokinetically in all four quadrants, due to the three-fold linkage and high spring rigidity.

With axial,radial and angular movement

The flectionally elastic element of the POSIMIN coupling consists of a laminated disc pack.Each disc pack contains a number of individual, thin, stainless steel spring discs, from which minimal restoring forces result, in cases of misalignment.

Maintenance-free

The guide bushes and high tensile fitbolts centre the disc pack precisely and facilitate the frictionally engaged Introduction of the tensile load into the disc pack without tribocorrosion. The highly developed construction, guarantees maintenance-free, ultimited operation, where the selection and operating criteria specified by the manufacturer are observed.

Easy-to-install

The laminated discs are pre-assembled in disc packs, centred with precision using the newly developed contoured support bushings as a clamping system. These flectionally elastic, torsionally rigid spring assemblies are inserted with the spacer into the specially designed guide. Having aligned the shaft ends. is then possible tor the fitter to clamp the resulting assembly to the attached counterflanges, without the need for further tools.

Smooth-running

The POSIMIN series has a particularly compact design. All coupling elements are manufactured on ultramodern NC machining centers with 1he most exact of tolerances. The series-manufactured POSIMIN couplings are therefore extremely true running and have a minimal axial run out. This has a direct effect on the balancing quality, which, in turn, effects the particularly smooth running of the coupling.

Temperature

The POSIMIN all-steel multiple disc coupling system, Including the selflocking nuts, is suitable for application, without restrict on, at temperatures of between -40 degrees C and +280 degrees C.

Unit construction system

Each size of coupling has a range of precision-machined standard parts which can be freely combined. Multifunctlonal components guarantee a high degree of availability.

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