Flexible coupling: jaw coupling
max. 0.13 - 78.0 Nm | Type SC OEP Couplings

Type SC, Jaw Couplings

The jaw coupling, or spider coupling, is one of the most commonly used flexible shaft couplings, and is often used as a default choice by designers as a general flexible coupling--despite the fact that it's not a very flexible coupling. It doesn't accommodate very large misalignment, and it exerts strong reactive forces on the support bearings when it does couple two misaligned shafts. Its primary purpose is actually torsional dampening.

Other strengths of the jaw coupling include high peak torque rating, low cost, and large axial shaft play accommodation.

OEP Couplings' type SC jaw coupling is a precision-machined unit. Many manufacturers produce jaw coupling hubs with inexpensive powdered-metal techniques, but all OEP type SC hubs are machined from bar on precision CNC machining centers with live tooling. In a configuration that exerts large reactive fores when subjected to misalignment, this precision is important--poorly machined hubs can result in bores that are off-center with respect to the axis of the spider, ensuring that the shafts will be poorly aligned, as a property of the coupling.
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