KOP-FLEX KD Series Disc Couplings

The KD series couplings are well suited for such applications as pumps, compressors, air conditioning and refrigeration equipment, fans, blowers and other rotating equipment. No other supplier offers the sizes, types, torque capacity and simplicity of the design offered by KOP-FLEX's KD series. 

• Unitized stainless steels disc packs are factory assembled and easy to assemble and disassemble in the field
• No lubrication required " Scalloped disc design optimized for torque capacity and life. 
• Sizes and types available to replace gear coupling 
• One of the widest ranges of disc coupling sizes and types available in the market 
• Designed to meet API 610 applications when specified 
• Available with 3 levels of balance classification 

Disc Type

Close Couple Type

Use in place of close coupled gear couplings.

• Types: KD1, KD10 and KD11
• Max. bore up to 11.50 inch (290 mm) diameter
• Torque capacity up to 5.2 million lb-in (588 kN-m) 

Spacer Type

For moderate shaft separations.

• Types: KD2, KD20, KD21, KD22 & KD5
• Max. bore up to 13.50 inch (340 mm) diameter
• Torque capacity up to 5.2 million lb-in (588 kN-m)
• Popular 5, 7, 8, 9, 10, 12 and 14 inch shaft separations ..available from our warehouses 

Floating Shaft Type

Medium and heavy duty applications requiring longer shaft separation.

• Used to replace gear couplings on paper mill machines
• Types: KD4, KD41, KD42, KD42T & KD5
• Max. bore up to 13.50 inch (340 mm) diameter
• Torque capacity up to 5.2 million lb-in (588 kN-m)
• KD42 is a drop in replacement for gear couplings - see ..
  Kop-Flex KD catalog page 120 for interchange chart
• Highest torque (power) capacity in the industry 

Cooling Tower Type (KD33)

Designed specifically for cooling tower drives and long span applications.

• Hubs, adapters, disc packs and hardware are all stainless steel for high strength and corrosion resistance  
• Center member is a lightweight composite or fiberglass tube engineered to provide optimum combination of strength and bending stiffness