ROBA®-ES
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We safeguard the movements of this world Specialists in power transmission for more than a century ® mayr  power transmission is one of the most traditional and yet most innovative German companies in the field of power transmission. From modest beginnings in the year 1897, the family enterprise from the Allgäu region has developed into the world market leader. Today, 700 employees work at the headquarters in Mauerstetten; more than 1200 employees work for the company worldwide. An unsurpassed standard product range The Christian Mayr mill-construction business – founded in 1897. ® mayr ...

Tradition and innovation do not contradict each other - on the contrary. They are the two supporting pillars which have guaranteed stability and reliability for generations. Longterm stability, independence as well as a good reputation and satisfied customers are important values for a family enterprise rich in tradition. Therefore, we place emphasis on: • Tested product quality, • Optimum customer service, • Comprehensive know-how, • Global presence, • Successful innovations and • Effective cost management. By pursuing our own objective of always offering our customers the technologically...

your reliable partner • Vibration damping • Damping behaviour can be selected through elastomeric elements in different Shore hardnesses • Backlash-free torque transmission through pre-tensioned elastomeric element • Compensation of shaft misalignments • Plug-in connection, therefore suitable for blind assembly • Maintenance-free, media-resistant, temperature-stable • Torsionally flexible on a small scale, but two to four times more rigid than toothed belt drives. ROBA®-ES Elastomeric Elements The elastomeric elements are the central element of the ROBA®-ES-coupling. They define the...

your reliable partner ROBA®-ES Contents Designs ROBA®-ES with key hubs • Single-jointed coupling • Double-jointed coupling short • Double-jointed coupling with sleeve ROBA®-ES couplings are delivered as un-bored hub design (further processing to be carried out customer-side) or with a finish bore and keyway JS9 (DIN 6885/1). An adjusting screw is located in the hub for axial securement. Up to Size 38, the hubs are made of aluminium. From Size 42, they are made of steel. Conventional bores can be delivered from stock. ROBA®-ES with clamping hubs • Single-jointed coupling • Double-jointed...

your reliable partner ROBA®-ES with aluminium shrink disk hubs • Single-jointed coupling • Double-jointed coupling short On this design, the hub body is made of aluminium and the ring of phosphated, annealed steel. The design is constructionally identical to the P-design (page 19). The symmetry, the absence of keyways and radial bores produces an optimum shaft run-out. Therefore, much higher speeds are possible compared to the other hub designs (please observe Diagram 1 “Balancing the shrink disk hub”, page 31). The torque is transmitted via frictional locking onto the shaft. Please observe...

your reliable partner ROBA®-ES elastomer couplings Type 94_. Clamping hub 1) / Clamping hub Compact Type 94_._0_ / 94_._5_ Shrink disk hub Type 94_._1_ Elastomeric element Hardness [Shore] 80 SH A 92 SH A 98 SH A 64 Sh D 72 Sh D Clamping hub 1) / Clamping hub Compact Type 94_._ _0 / 94_._ _5 Single-jointed coupling Type 940.___ Split clamping hub 1) Type 94_._ _3 Double-jointed coupling with sleeve (variable length) Type 943.___ 11 If required also available with keyway Shrink disk hub Type 94_._ _1

your reliable partner ROBA®-ES with key hubsSingle-jointed coupling / Type 940._ 22. The adjusting screw is offset by 180°to the keyway on Sizes 14 to 42 (see Fig. above). We reserve the right to make dimensional and constructional alterations.

Double-jointed coupling short / Type 942._ 22. Double-jointed coupling with sleeve / Type 943 Order Number 2 Double-jointed coupling short 3 Double-jointed coupling with sleeve Size Elastomeric Aluminium design up to Size 38 Steel design from Size 42 Table) Table) Operating speed nS [rpm] for sleeve 2) In order to dimension the shaft-hub connection, the calculation procedure acc. DIN 6892 is to be applied For the calculation, please take the yield point Rp 0.2 = 200 N/mm2 for aluminium and the yield strength Re = 350 N/mm2 for steel. 3) Also applicable for double-jointed design 4) Not valid...

<-> mayr your reliable partner ROBA®-ES with clamping hubs Single-jointed coupling / Type 940._ 00._ Mass moments of inertia J [10-3 kgm2] 5) 6) Size Stock program

Double-jointed coupling short / Type 942._ 00. Double-jointed coupling with sleeve / Type 943, Order Number 2 Double-jointed coupling short 3 Double-jointed coupling with sleeve Aluminium design up to Size 38 Steel design from Size 42 Table) Table) A Operating speed nS [rpm] for sleeve 1) Recommended hub / shaft tolerance: F7 / k6 2) Transmittable torques dependent on bore, see page 28. 3) Also applicable for double-jointed design 4) Not valid for designs with sleeve (see diagram: “Permitted speeds for sleeve” on page 26) 5) Mass moments of inertia and weights are valid for one elastomeric...

O mayr your reliable partner ROBA®-ES with clamping hubs Compact Single-jointed coupling / Type 940._ 55._ Mass moments of inertia J [10-3 kgm2] 5) 6) Size We reserve the right to make dimensional and constructional alterations.

Double-jointed coupling with sleeve / Type 943._55. Order Number 0 Single-jointed coupling Sleeve length 2 Double-jointed coupling short Hs [mm] 3 Double-jointed coupling with sleeve Size Elastomeric Aluminium design up to Size 38 Table) Table) A Operating speed nS [rpm] for sleeve 1) Recommended hub / shaft tolerance: F7 / k6 2) Transmittable torques dependent on bore, see page 28. 3) Also applicable for double-jointed design 4) Not valid for designs with sleeve (see diagram: “Permitted speeds for sleeve” on page 26) 5) Mass moments of inertia and weights are valid for one elastomeric...