The small, thin shims are used in demanding
applications such as automotive, wind energy, and aerospace
ST.
PAUL, Minn., Sept. 4,
2024 /PRNewswire/ -- 3M™ Friction Shims are
small, thin steel shims with a big impact. They can increase
maximum load and peak torque in bolted connections without
additional fasteners or redesigns. 3M is excited to announce
that it has now made and sold more than 300 million Friction Shims
worldwide.
"This is a significant milestone for us because we know
3M Friction Shims help our customers
improve their design," said Amy
McLaughlin, president of 3M's Advanced Materials Division.
"We are very proud that we've now made and sold more than 300
million worldwide. 3M Friction Shims
are a simple solution for stronger and more stable bolted
connections."
3M Friction Shims increase
friction coefficients in torsional and static joints, particularly
in demanding automotive applications. Nickel-coated steel shims
contain partially embedded diamond particles which resist breakage.
When applied with pressure between two mating surfaces, the
diamonds "bite" into each surface to create a microform fit.
This allows for a coefficient of static friction up to five
times greater than in a conventional bolted connection – especially
valuable as electric vehicles take center stage in the global
marketplace. Heavy lithium-ion battery packs combined with higher
torque can often put considerably more strain on critical chassis
and battery mount joints.
3M Friction Shims fit within most
engineering tolerances, allowing for lightweight, compact designs.
They can also be used as a drop-in solution to stabilize joints
further down the manufacturing chain. Friction Shims can be used in
a wide range of applications, including:
- Shear joints in automotive chassis
- Torsional joints
- Flange joints
- Joints with central bolt
- Bolted connections
- Fastener systems
According to 3M, engineers can use
3M Friction Shims to:
- Secure critical joints in chassis, battery mounts,
suspensions and other critical areas in internal combustion and
electric vehicles.
- Optimize design for multi-material automotive structures
to withstand higher force loads without changing parts or part
sizes.
- Enhance pursuit of lightweighting goals by achieving the
same shear and peak load performance using fewer smaller and
lighter mechanical fasteners.
- Manage NVH by dampening micromovements in bolted joints,
enhancing passenger experiences and increasing joint life.
3M supplies Friction Shims in
various grades for specific friction coefficients and related shear
or torque requirements. Friction Shims can be specified for
ultra-thin torsional crankshaft or camshaft assemblies, or to
create form fits even through e-coatings and rough surfaces.
Preassembly solutions include inner clips for faster installation.
Friction Shims can also be disassembled and reused.
About 3M
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SOURCE 3M Company