Spiral Beam

  • BeamGroup

Spiral beam couplings are highly flexible precision machined shaft to shaft couplers that compensate for Axial, Angular and Radial (Parallel) misalignment between shafts. Spiral couplings are some of the most popular couplings used in industry. Ondrives.US supplies clamping or set screw styles in a wide range of bore sizes and major diameters.

Three Beam and Six Beam couplers are machined from solid billets of aluminum, stainless steel or nylon. These shaft couplings incorporate 3 parallel beams beginning 120 degrees apart that spiral around the circumference of the part and penetrate through to the bore.

Three Beam Couplings have one set of these beams while Six Beam Couplings have two sets of these beams separated by a solid member. Three Beam Couplings are shorter in length and can tolerate less radial shaft misalignment. The longer Six Beam Couplings are more tolerant of both angular and radial shaft misalignment. Both of these flexible spiral couplings have some degree of axial compliance.

Single Beam Couplings are also machined from solid billets. They have a single beam that spirals around the circumference of the part and penetrate through to the bore. These flexible spiral couplings are typically less expensive and less torsionally rigid than a multiple beam coupling. These precision machined parts can tolerate a greater amount of axial misalignment.

Customization is available on these flexible shaft to shaft couplings. Please contact our application engineers to discuss your particular needs.

Ondrives.US engineers have developed a White Paper “How to select Shaft Couplings” to assist you in the selection of the most appropriate shaft to shaft precision machined parts for your application.

The Ondrives.US Advantage: A coupling for every application

  • Zero Backlash
  • Up to 7 degrees of angular offset
  • Single piece construction
  • Any bore to bore combination available within the min. max. limit
  • Inch and metric bores
  • Aluminum, stainless steel and nylon versions available
  • Torques to 1240 inch-lbs

Couple to almost any shaft diameter with Ondrives.US Bore Reducers.

Attach your flexible beam couplings to an Ondrives.US Precision Ground Shaft, available from stock.

© Ondrives.US Corp.
216 North Main Street
Freeport, New York 11520

Phone: 888 260-7466