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NEXT GENERATION SKWEZLOC®

CONCENTRIC LOCKING CLAMP FOR IMPROVED LOCK RELIABILITY

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NEXT GENERATION

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Originally designed and patented in 1966, Sealmaster® SKWEZLOC®
the concentric lock has become the standard in concentric locking
and has been redesigned* to accommodate “commercial” grade turned
& polished (T&P) shaft tolerances. This new design also provides
improved lock reliability on the turned ground & polished (TG&P)
shaft tolerances.


SKWEZLOC® concentric locking collar clamp design results in near-perfect
concentricity of the shaft-to-bearing bore and maintains near-perfect ball
path roundness while reducing fretting corrosion. This design eliminates
the shaft damage of setscrew locking and minimizes bearing induced
vibration for smoother quieter operation. The collar has a TORX Plus® 
head cap screw that outlasts stripping 12 times longer than hex head
cap screws.


NEW DESIGN FEATURES

  • Innovative circumferential groove on the inner ring bore that
    improves shaft grip and reduces raceway distortion for quieter
    smoother operation allowing for improved lock reliability.
  • Larger cap screw and collar for improved clamping force to the shaft.
  • Designed for use on “commercial” T&P shafting**, potential user
    cost reduction on shafting by specifying “commercial” tolerances.
  • Same simple single screw installation, no axial movement during
    installation or risk of preloading the bearing which is concerns
    when using an adapter lock design.
  • Patent-pending design.
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SKWEZLOC®

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Note: all values exceed the axial load capacity of the bearing
*In laboratory axial push off testing for 1 7/16”, the next-generation design
resulted in:
- 85% holding force improvement on turned, ground & polish Shafting
vs old design;
- 59% holding force improvement on turned, ground & polish Shaftin
vs leading competitor; and
- 113% holding force improvement on turned & polish shafting vs
leading competitor.




  1. CIRCUMFERENTIAL GROOVE increases inner ring elasticity to
    improve grip (clamping force) on “undersized” commercial shafting
    without increasing deformation to inner ring ball path.

  2. LARGER COLLAR & SCREW increase grip and holding power.

  3. OPTIMIZED CHAMFER PROFILE reduces stress concentrations
    when the collar is tightened.


FEA Modeling of Installed Inner Ring

 

 

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