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This keyless locking assembly Recca 18 is suitable for shaft diameters from 10mm upwards and are designed for small low torque applications, providing a concentric connection between the component and the shaft. . The thin wall design combined with low hub pressure allows for use in small diameter hubs. The design is to fit these elements perfectly in the hub bore to provide a secure surface.When clamped, some axial movement occurs.

Features of keyless locking assembly Recca 18

Keyless Locking Assembly Features RECCA 18
Self-centering Y
Not self-centering  
Min. radial dimensions Y
Rapid maintenance and assembly Y
Medium-to-low torque Y
Medium-to-high torque  
High torque  
Self-locking Y
Non self-locking  
Shaft install tolerance H8
Hub install tolerance H8

Keyless Locking Assembly RECCA18 Can Be Interchanged with:

Chiaravalli RCK61, BEA BK61,          SATI KLSS, MAV 7903, KTR KTR105, SKF FX350

Shaft locking assemblies Selection Guide

Transferred drive torque and axial thrust load: -.

The maximum effective torque Te generated by the maximum driving torque Tm and the maximum axial thrust Ft must always be less than the torque Mt shown in the table for cone clamping elements selection.

The maximum drive torque Tm must take into consideration any shock loads, as well as the maximum drive starting torque. If the maximum torque is not known, the rated drive torque Td can be estimated from the service factor in the following table, which is derived from the motor power P and the Shaft speed N r.p.m.


Drive Torque Td =   NM     Where P=Power KW

Max. Drive Torque Tm= SF x Td            d= Shaft Diameter mm

Maximum effective torque =  NM     Ft = Max. Axial Load N

                                                d  = Shaft Diameter mm

For correct selection

Torque Capacity M > Te(or Tm): and Axial Force Capacity F > Ft


Tilting or Bending Loads:-

Always endeavour to design location of shaft clamping element directly beneath line of driving force on hub, ie chain, V belt etc. If overhang of load or force occurs the torque capacity of the clamping element can be reduced.Under no circumstances should the resultant couple force on the clamping element exceed 0.25M.

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