))!*#(#,()$*%! # $' #)$, (')' (. )( ($')( ## )(('+ ' #! #((# ) $#)$%$,')'#(" (( $#))$'( $#!!. !- !$*%! #$"%#()($'" (! #"#)( #"%#()$'( $#!+ ') $#( ( + !! #),$( #( #*''#)!. #(+# ( /($')$'&*('$" )$"#$)' + ( /(, !!.) " !$#, !! -)#)%'$'"# '#*%)$" The ROFLEX is a short
shaft coupling in which the input and output shafts can be pushed together between 3 and 6mm, depending on the size. The torque is transmitted via elastomer packages, which at the same time compensate for misalignments and dampen shocks and torsional vibrations. Should the elastomers fail due to extreme loads, the fail-safe coupling continues to hold the torque. The ROFLEX is made of grey cast iron and is
available in two types: In type N, both the pocket and the cam part consist of standard hubs. In the SH SPLIT design, on the other hand, the cam hub is
split. Here, the hub is specifically and mechanically separated into two halves by ‘fracture cutting’, or ‘cracking’. The resulting fracture surfaces centre both hub halves precisely with each other, which makes incorrect assembly almost impossible.
“As a rule, we recommend that our customers
fit the SH-SPLIT hub onto the motor shaft. This makes the coupling easier to assemble overall and in case of service there is more space available, for example to exchange the elastomer packs,” says Michael Brüning, product manager at KTR. "In addition, it allows the user to carry out the direction of rotation check on the engine without the coupling hub." The ROFLEX has been
ROFLEX SH split
The hub halves can be mounted on block, the fit of the bore remains unchanged. Depending on accessibility, the hub can be pushed on for assembly. Or the two hub halves can be joined around the shaft; thus the split hub can be radially installed and removed without dismantling the adjacent units.
assessed and confirmed according to the European ATEX product directive 2014/34/EU and is suitable for use in potentially explosive atmospheres. Core industries are pumps and compressors; other areas of application in general mechanical engineering are gearboxes, fans and belt drives. Both types are currently available in seven sizes for
torques from 65 to 790Nm. Five
more sizes in the power range up to 5,000Nm are to be added by mid-2022.
ROTEX® ZS-DKM-SH ROFLEX®-SH
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esulting in quicke process, manufac ation is also
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Looking for ways to reduce downtime and associated costs? Look no further than KTR’KTR’s range of split-hub (SH) coupling solutions. KTR’s “cracked” cast hubs split vertically off the shaft, enabling both pump and motor to remain aligned and in place, resulting in quicker maintenance turnarounds. Thanks to KTR’hanks to KTR’s advanced “cracking” process, manufacturing costs are reduced, performance is maintained and ATEX certification is also available. For more info visit
www.ktr.com/uk
cracked it! H)
re
er maintenance turnar cturing costs ar o available. F
educed, pe erformance is maintained and AT
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43
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