Description Challenge 3012 Chain Coupling 3012 Chain Coupling SCC-3012 KC-3012 Pilot Bore Includes 1 x Complete Chain Coupling Size 3012 (Fully sealed casing with O rings) Chain couplings offer the highest permissible torque ratings within the coupling range, however they can accommodate very little shaft misalignment. The chain coupling range offers torque ratings of 150Nm up to 17800Nm accommodating shaft diameters from 12mm up to 150mm. The coupling consists of 2 simplex sprockets which are joined be a necklace of corresponding power transmission chain, all couplings are supplied pilot bored. We can bore and key these couplings to your required size, please enquire for more details. Similar to Renold Chainflex Couplings (please check dimensions before placing an order) *Main listing image does not represent part number Coupling SizeChain SizeMin Bore mmMax Bore mmCasing OD ACasing Width BAssembled Width CHub Length DHub Diameter EBolt Centres FTorque Ratings NmComplete Weight kg 301235-212157062652825571500.5 401240-212207872783631612101.0 401440-212258575803643723001.4 401640-214309275803650773801.8 501450-21435101841004553825502.5 501650-21640111851004560927253.2 501850-216451238510045701069254.0 601860-22055144106122548512217507.2 602060-22070160108123549813220509.5 602260-2257516811612354110145240011.3 801880-2307519012814067110160380014.7 802080-2308521113814467120184470018.2 802280-2359522613815567140196550023.3 10020100-24011028015517679160250870036.0 12018120-240120305180198891702801325049.0 12022120-240150355180218992103351780077.0