Kop-Flex disc couplings
Lubrication-free flexible coupling that transmits torque through flexing stainless-steel disc packs, giving zero backlash and true torsional stiffness for pumps and turbomachinery. Addresses the relube and wear failure of gear and grid couplings in sealed or high-speed drives. SES holds the range as an authorised Regal Rexnord distributor, covering disc pack MT (medium torque) / HT (high torque); torque To ~56,000,000 lb-in (High Performance); bore To 34 in on large sizes; angular misalignment ~0.33 deg per disc pack. Executions include KD20, KD21, series h, MAX disc, among others. It is specified most often into API process pumps and centrifugal compressors. Every part is genuine Regal Rexnord through official channels, with designation, specification and options confirmed against your duty before it ships — supplied from Kolkata and our branch network, with breakdown cover that does not sit in an inbox.
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From integrated steel plants to power utilities and EPC majors — the works that cannot afford a counterfeit part specify through SES.
Element
Flexing disc pack, dry
Standards
API 610 / API 671
Maintenance
Lube-free, visual inspection
Disc pack
MT (medium torque) / HT (high torque)
Where it runs.
You will find Kop-Flex disc couplings in the parts of a plant where this particular duty actually occurs. In practice that means API process pumps, centrifugal compressors, blowers, and equally steam and gas turbines, cooling-tower drives, high-speed motor sets. What links them is the duty rather than the machine name — element: Flexing disc pack, dry. If your installation is not on that list it matters less than you would think: the operating condition decides the specification. Send us the load, the speed, the running temperature and the environment it runs in, and we will match it to the right execution in the Regal Rexnord range and confirm what is in stock.
Specify it against the duty.
Specification here follows the operating condition, not the catalogue. Relube access poor or contamination risk — Disc pack over gear/grid, no lubrication Special-purpose turbomachinery — High Performance Disc to API 671 / ISO 10441 Large parallel offset needed — Use a spaced (spacer) disc arrangement Where two of those apply at once, specify for the harsher of the two — under-specifying is what puts the part back on the bench a month later. Send us the duty and we will confirm the execution.
Ordering this from SES.
Disc packs are the consumable wear item; stock unitized replacement packs by size and never disassemble a factory-set pack in the field. Send the designation off the failed part and we will confirm the Regal Rexnord equivalent and stock position.