CR90 Series

90 degree rotary couplings

Demolition ApplicationsIndustrial ApplicationsAgricultural Applications

Holmbury’s CR90 Series 90 degree rotary couplings are designed for use on hydraulics lines that may be subject to torsional stress to allow rotation of hydraulic pipes and hoses. Using a rotary coupling in the hydraulic line stops the hose twisting, limiting stress and increasing hose lifespan.
Speciality Coupling TechSpeciality Coupling
Carbon Steel Trivalent Materials

Features

  • Reduces torsional forces
  • Can also be used in applications that are required to rotate but not under pressure, such as hose reels
  • Spindle is carried on a roller bearing and has a low friction shaft seal that can rotate at maximum pressure with low torque







Accessories

Not applicable

Construction

  • Carbon steel with trivalent plating
  • Fitted with Nitrile seals
  • Also available in AISI 316 stainless steel (See SR90 Series)







Applications

  • General hydraulic systems
  • Machine tools, 
  • Test equipment,
  • Agricultural
  • Mobile hydraulics






AVAILABLE SEALS AND TEMPERATURE RANGE

All carbon steel products have Nitrile Butadiene Rubber seals fitted as standard. All stainless steel products have Fluoro-elastomer Rubber (Viton®) seals fitted as standard. Special seal materials available on request.

106°C 223°F

Nitrile

120°C 248°F

EPDM

200°C 392°F

Viton®

300°C 572°F

Kalrez®

-20°C -4°F

Viton®

-25°C -13°F

Kalrez®

-40°C -40°F

Nitrile

-50°C -58°F

EPDM

Abbreviation Trade Name Chemical Name Min Temp. Max Temp.
NBR XNBR Chemigum®, Hycar8, Breon®, Butakon®, Butacril®, Buna-N®, Perbunan®, Paracril®, Krynac®, Europrene-N®, Nipol® Nitrile Butadiene Rubber Carboxylated Nitrile Rubber -40°C (-40°F) 106°C (223°F)
FKM (FPM) Dai-el®, Fluorel®, Tecnoflon®, Viton® Fluoro-elastomer Rubber -20°C (-4°F) 200°C (392°F)
EPR EPDM Buna-AP®, Dufral®, Epsyn®, Nordel®, Epcar8, Keltan®, Royalene®, Polysar-EPDM® Ethylene Propylene Copolymer Ethylene Propylene Terpolymer -50°C (-58°F) 120°C (248°F)
FVMQ Silastic 1S®, FSE® Fluorosilicone Rubber -65°C (-85°F) 170°C (338°F)
FFKM Perlast®, Kalrez®, Chemraz®, Kaflon® Perfluoroelastomer -25°C (-13°F) 300°C (572°F)