SIT-LOCK® Keyless Locking Devices

SIT-LOCK® Keyless Locking Devices


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.

Also available the new MONOBLOCK SIT-LOCK® 30 for shaft-hub connection! Easy, fast, MONOBLOCK!

calettatori sit-lock applicazioni
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

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.

Locking device CAL3

 

Composed of two tapered rings and one outer ring with a slit. It is particularly suitable for applications that
require high torque transmission.Locking device CAL4

 

Composed of two tapered rings and one outer ring with a slit. It is particularly suitable for applications that require high torque transmission.Locking device CAL4A

 

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.Locking device CAL5A

 

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.

Locking device CAL5B

 

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.

Locking device CAL6

 

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.

Locking device CAL8

 

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.

Locking device CAL7

 

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.

Locking device CAL8

 

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.

Locking device CAL12

 

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.

Locking device CAL15

 

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.

Locking device CAL16

 

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.

Locking device CAL18

 

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.

Locking device CAL13

 

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.

Locking device CAL1

 

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.

Locking device CAL9

 

Composed of two tapered rings, it is suitable for applications that require smaller dimensions.

Locking device CAL2

 

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.

Locking device CAL10

 

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.

Locking device CAL11

 

Composed of an inner ring and an outer ring. Comes with DIN 931/933 10.9 or 12.9 screws depending on the model.

Locking device CAL14

 

Composed of a single cylindrical ring in which a tapered hole is cut. A special screw with a tapered surface is inserted into the
tapered hole.
The screw is of quality 12.9 in order to allow the tightening torques indicated in the tables.

Benefits

  • Quick and easy assembly and disassembly
  • Quick installation and removal
  • Economical
  • Compact dimensions

Recommended for the connection of:

  • Timing pulleys
  • Sprockets
  • Levers
  • Cams
  • Gears

MONOLOCK SIT-LOCK 30 Catalog