Shaft locking devices

Smooth cone action with superior holding power

SIT-LOCK® Keyless Locking Elements

Combining the SIT-LOCK® design of smooth cone action with superior holding power, the hub can be clamped at any position along a shaft, eliminating the need for lock washers, spacers, stop rings, etc.

» Easy assembly and disassembly

Both actions take place by locking and unlocking the clamping screws with common tools. The use of a torque wrench is only necessary when a more precise torque is required.

» Superior holding power

The action of the clamping cones creates shaft clamping torque superior to a normal keyed hub.

» Overload protection

When the preset torque is exceeded SIT-LOCK® will slip, preventing the connected elements from being broken.

Note: SIT-LOCK® units are not friction couplings so, excessive slip will cause damage.

» Easy adjustment

Combining the SIT-LOCK design of smooth cone action with superior holding power, the hub can be clamped at any position along a shaft, eliminating the®need for lock washers, spacers, stop rings, etc.

» Precision location

With the SIT-LOCK® smooth cone action, the SIT-LOCK® is ideal for clamping cams, timing devices, and indexing mechanisms accurately and precisely. Temperature -20°C to 150°C.

» Unlimited use possibilities

SIT-LOCK® units are suitable to connect any type of hub (flywheels, chain-wheels, gears, levers, pulleys, eccentrics, coupling, etc).

» Various solutions in stock

Available in stock in 10 different types, SIT-LOCK® units can be utilized in a varied range of industrial applications.