The SIT-LOCK® keyless locking devices produced by SIT S.p.A. for more than 30 years are ideal for any shaft-hub connection application.
SIT-LOCK® units are suitable to connect any type of hub (flywheels, pulleys, chain wheels, gears, levers, eccentrics, couplings, etc.) and can be utilized in a varied range of industrial applications.
Features
- Help reduce the costs of the assembly
- Ideal for next-generation applications
- High axial and angular positioning accuracy
- Ideal for applications involving acceleration and deceleration
- Zero backlash
- Easy to mount
- Simultaneous loads possible
- Calculation ease
Keyless Locking Devices SIT-LOCK® available executions
SIT-LOCK® 3Self-centering
Comprised of a cut inner ring and outer ring, and a spacer which prevents the hub from moving relative to the shaft when tightening the screws. This locking device is particularly suitable for applications which require low hub pressures. Recommended for use with aluminium hubs or hubs with lower mechanical properties.
SIT-LOCK® 4Self-centering
Composed of two tapered rings and one outer ring with a slit. It is particularly suitable for applications that require high torque transmission.
SIT-LOCK® 4ASelf-centering
Composed of two tapered rings and one outer ring with a slit. It is particularly suitable for applications that require high torque transmission.
SIT-LOCK® 5ASelf-centering
Composed of an inner ring and outer ring both with slits. This type of locking device is particularly suitable for applications that require excellent hub-to-shaft concentricity and perpendicularity.
SIT-LOCK® 5BSelf-centering
Composed of an inner ring and outer ring both with slits. This type of locking device is particularly suitable for applications that require good hub-to-shaft concentricity and perpendicularity. It is also used for locking hubs with lower mechanical properties.
SIT-LOCK® 6Self-centering
Composed of an inner ring and outer ring both with slits. This type of locking device is particularly suitable for applications that require good hub-to-shaft concentricity and perpendicularity.
SIT-LOCK® 7Self-centering
Composed of an inner ring and outer ring both with slits. This type of locking device is particularly suitable for applications that require excellent hub-to-shaft concentricity and perpendicularity. It is also used for locking hubs with limited widths.
SIT-LOCK® 8Self-centering
Composed of an inner ring and outer ring both with slits. This type of locking device is particularly suitable for ap-plications that require excellent hub-to-shaft concentricity and perpendicularity. Allows the same hub, with the same external diameter, to be used on shafts of different diameters.
SIT-LOCK® 12Self-centering
Composed of an inner ring and outer ring both with slits. This type of locking device is particularly suitable for applications that require good hub-to-shaft concentricity and perpendicularity.
SIT-LOCK® 15Self-centering
Composed of an inner ring and outer ring both with slits. This type of locking device is particularly suitable for applications that require excellent hub-to-shaft concentricity and perpendicularity.
SIT-LOCK® 16Self-centering
Composed of an inner ring and outer ring both with slits. This type of locking device is particularly suitable for applications that require excellent hub-to-shaft concentricity. It is also used for locking hubs with limited widths and diameters.
SIT-LOCK® 18Self-centering
Composed of an inner ring and outer ring both with slits. This type of locking device is particularly suitable for applications that require torque transmission while generating an axial force to axially lock a bearing, washer or any other axially clamped part.
SIT-LOCK® 13Self-centering
Composed of two tapered rings, an inner ring, a slit outer ring and a ring nut with locking washer. It is suitable for applications that require reduced radial and axial dimensions. Particularly suitable for applications without screw tightening space. The ring nut can actually be tightened from above using a special key of very reduced size.
SIT-LOCK® 1Not self-centering
Consisting of two tapered rings without slits, a slit inner ring and a slit outer ring, it is particularly suitable for applications that require extensive tolerance.
SIT-LOCK® 9Not self-centering
Composed of two tapered rings, an inner ring, a slit outer ring and a ring nut with locking washer. It is suitable for applications that require reduced radial and axial dimensions. Particularly suitable for applications without screw tightening space. The ring nut can actually be tightened from above using a special key of very reduced size.
SIT-LOCK® 2Not self-centering
Composed of two tapered rings, it is suitable for applications that require smaller dimensions.
SIT-LOCK® 10External Rigid Shaft Coupling
Composed of two tapered rings and a slit inner ring. It is particularly suitable for clamping two shafts where medium-high torque transmission is required.
SIT-LOCK® 11External
Composed of a slit inner ring and two outer rings without slits. Supplied with DIN 931/933 10.9 screws except for SIT-LOCK® 11S 12.9 which is supplied with DIN 912 12.9 screws.
SIT-LOCK® 14External
Composed of an inner ring and an outer ring. Comes with DIN 931/933 10.9 or 12.9 screws depending on the model.