Flexible coupling: shaft coupling
max. 0.08 - 61 Nm | Type BC OEP Couplings

Type BC, Block Couplings

The block coupling is a very old design, and works on the same principle as an Oldham coupling--in fact, it's simply a variation of an Oldham coupling with the grooves in the hub, instead of the mid. The square mid rides in these wide grooves.

The midsection of the BC is large enough to contain an internal grease reservoir, which makes this coupling particularly useful for dirty or harsh operating conditions. Block couplings do not have a sacrificial midsection that serves as a mechanical fuse under overload, but other than this, they offer all of the advantages of a conventional Oldham coupling, including large radial and axial misalignment, low reactive forces, homokinetic transmission, zero backlash, and high torsional stiffness.

Few manufacturers still offer the block coupling, as it's been replaced by the easier-to-produce conventional Oldham coupling. OEP's type BC block coupling is a precision-CNC-machined unit produced with tight tolerances, optimal surface finishes, the latest surface treatments, and a geometry that maximizes peak torque. Hubs are machined from high-strength alloys like 7075 aluminum and 17-4 stainless steel.