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Duff Norton provides three types of couplings which have been specifically matched for ease of installation to actuators.

Jaw Couplings

– Integrate well with Duff-Norton smaller capacity actuators
– Do not require lubrication
– Our Hytrel(registered) spiders provide 2x the torque capability vs. a standard urethane or BUNA(registered) spider
– Easy fit onto the actuators worm shaft

Chain Couplings

– Integrate well with Duff-Norton mid and larger capacity actuators
– High torque capacities
– Standard ANSI dimensions, straight bore diameters
– Common bore diameters readily available
– Special bore diameters may be custom ordered
– Long service life
– Easy fit onto the actuator’s worm shaft
– Allows for incremental system adjustments


Gear Couplings

– Give great strength under load due to compact design and construction.
– Allow for incremental system adjustment.
– Long service life
– High torque capacities

Duff  Norton Australia can assist you in making the best selection for your particular application.