What is a friction shims? How does a friction shims work?

07/17/2026

DAOLER friction shims consist of a nickel-coated steel substrate with diamond particles partially embedded into the surface. When placed between two bolted mating surfaces and subjected to compressive load, the diamonds indent into both opposing faces, creating a micro-form-fit interface. This mechanism increases the static coefficient of friction by up to five times relative to conventional bolted joints.

Secure critical bolted joints by maximizing the static friction coefficient. Protect and reinforce the connection integrity of chassis components, battery mounts, suspension systems, and other coated areas featuring electrophoretic paint finishes. Effectively resolve excessive shear forces induced by the deployment of large-format, high-mass traction batteries. Enhance torque transmission capability to address high-torque demands in driveline systems originating from high-power electric motors.

Optimize design to sustain elevated loads without necessitating modifications to part or component dimensions. Strengthen joints between dissimilar material surfaces, including aluminum, electroplated finishes (cathodic dip coatings), painted layers, and composite substrates. Facilitate cross-platform design standardization. Unlock novel engineering concepts such as skateboard chassis platforms in electric vehicles and short-shaft motor configurations in electric drive units.

Control weight by employing smaller bolts and fastening elements, thereby reducing assembly envelope while achieving equivalent or superior performance. Increase power density in compact internal combustion engines and make efficient use of constrained packaging spaces. Contribute to overall mass reduction in electric and hybrid vehicles, thereby extending battery driving range.

Improve NVH performance by mitigating micro-slip and fretting at bolted interfaces, thereby stabilizing and securing the chassis structure. Enhance passenger ride comfort and overall vehicle refinement.

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