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Splined Rigid Shaft Couplings

Splined Rigid Shaft Couplings

Cylindrical rigid splined shaft couplings have evenly spaced protrusions, also known as splines, machined into the circumference of the hole at the center of the coupling. The coupling's splines mesh with corresponding splines on the ends of two splined shafts to maximize the amount of torque that is transmitted between the shafts when they are connected with the coupling. The splines evenly distribute the torque around the shaft and coupling, making splined couplings more wear-resistant than keyed couplings.

Rigid shaft couplings allow minimal backlash (or play) between the shafts and are suitable for continuous power applications. To avoid damage to the coupling, bearing, or shafts, they should only be used in applications where there is no misalignment between the shafts. You may have to remove other components on the shaft before installing or removing the coupling.

Involute Spline Couplings

The involute shape of the splines provides greater strength and less possibility of fatigue cracking than straight splines. These couplings are for use with compatible involute spline shafts.

Black Oxide Steel

Inch

Black Oxide Steel

Straight Spline Couplings

Also known as a parallel key spline coupling, this coupling has straight-sided splines for coupling to straight-spline shafts.

Inch

Black Oxide Steel

Precision Splined Hubs

These precision-splined hubs are machined to tight tolerances for the inside and outside diameters to ensure smooth operation and minimum wear of shaft-mounted components. They are commonly used on hydraulic motors.

Inch

Black Oxide Steel