Dayton 6L018 Rigid Shaft Coupling 2 in 660 in-lb 800 RPM

Industrial Power Transmission Coupling

The Dayton 6L018 is a rigid shaft coupling designed for connecting two shafts in industrial power transmission systems. It suits maintenance engineers and machinery builders who need a solid, zero-backlash connection between matched round keyed bores. The one-piece carbon steel construction provides a permanent alignment solution for fixed shaft arrangements.

Torque and Speed Operating Envelope

This coupling transmits up to 660 in-lb of torque at a maximum rotational speed of 800 RPM. The 1.75 in clearance diameter and 2 in overall length define the physical space required for installation. Operation beyond the rated torque or speed limits risks mechanical failure and misalignment damage.

Upgrading from Flexible or Two-Piece Couplings

This rigid model replaces flexible couplings when shaft alignment is precise and vibration damping is handled elsewhere in the system. It also supersedes two-piece clamp couplings where a simpler, permanent keyed connection is preferred. The jump is worth it when backlash elimination and maximum torque density outweigh the need for misalignment accommodation.