Can One Auto Collision Repair SPR System Handle Multiple Rivet Sizes?

Different rivet sizes may be considered when sampling a self-piercing riveting (SPR) system for auto collision repair. However, the currently available specifications do not confirm the exact rivet diameter range or prove that a single system can use multiple rivet sizes without tooling changes. The listed SPR riveting gun provides finely adjustable output pressure from 1–80 kN, which is useful for controlled process trials. Actual compatibility still depends on the rivet, die, material combination, and repair requirements.

What the Available Specifications Show

Questok supplies SPR riveting guns and related joining systems for aluminum vehicle bodies, including applications involving electric vehicles, luxury cars, and pickup trucks. Its repair solutions use self-piercing riveting, often together with adhesive bonding, in accordance with vehicle manufacturer procedures.

• The SPR equipment is designed for aluminum body repair and other vehicle joining applications.
• Output pressure can be adjusted precisely across a range of 1–80 kN.
• The published information does not identify a supported rivet diameter range.
• There is no stated confirmation that one standard system accepts every rivet size or uses interchangeable dies.
• Questok has supplied vehicle repair riveting equipment since 2012, including solutions for Ford F150 pickup repairs and various EV models.

Therefore, the pressure range supports structured testing, but it should not be interpreted as proof of multi-size rivet capability. A technical review is necessary before selecting samples or finalizing a repair process.

How Rivet Size Compatibility Should Be Evaluated

An SPR process joins sheet materials by driving a specially designed rivet through the upper layer and expanding it into a lower layer without creating a conventional pre-drilled hole. When different rivet sizes are being considered, several technical factors must be checked together rather than relying on force adjustment alone.

Key verification points

• Rivet and die matching: The rivet dimensions and die geometry must be compatible with the equipment and the intended joint.
• Material combination: Aluminum grade, steel reinforcement, coated panels, and dissimilar material combinations can affect the required joining conditions.
• Panel thickness: Total stack thickness and individual sheet thickness influence rivet selection, penetration, and joint formation.
• Available access: Collision repair locations may limit tool orientation, throat clearance, or access to the back of the panel.
• Required joint quality: The final joint must meet the applicable vehicle manufacturer or repair standard.
• Process force: The 1–80 kN adjustment range can help establish suitable trial conditions, but the correct setting must be proven through testing.

Because the provided product data does not list interchangeable tooling or specific rivet-size limits, the safest approach is to submit a complete application profile for engineering evaluation. This is particularly important when the sample is intended to compare several rivet diameters within one repair project.

Questok’s Automotive Joining Experience

Questok’s application information covers aluminum car bodies used in EVs, premium vehicles, and pickup trucks. Its repair process can combine riveting and adhesive bonding according to manufacturer-defined procedures. The company also reports production-line SPR system projects for Mercedes-Benz in Fuzhou, Geely, NIO, Leapmotor, and SAIC, demonstrating experience in both vehicle manufacturing and repair-related joining applications.

For a multi-size rivet sampling request, customers should provide the vehicle or component type, material grades, panel thicknesses, proposed rivet specifications, access restrictions, target production or repair volume, and the required inspection criteria. Based on these details, Questok can assess the required pressure, tooling arrangement, dies, and process sequence.

Available information also identifies CE certifications under certificate numbers ISETC.001120210222 and 3N210218.PTK0S25. The listed product categories include SPR riveters, SPR riveting guns, SPR riveting systems, self-piercing riveting guns, and related joining equipment.

Application Development and Customization

Questok has developed customized joining equipment for vehicle manufacturers. In one project, the company created a bespoke SPR system for an EV manufacturer’s new-model prototype after factory visits and detailed engineering discussions. In another cooperation case, the vehicle production process required both self-piercing riveting and rivetless clinching. The solution was developed through testing of material combinations, dies, and joining parameters before production implementation.

These examples indicate that application-specific development is possible, but they do not automatically confirm that a standard auto collision repair SPR system can process every rivet size. Each proposed rivet should be validated using the actual material stack, die configuration, and repair conditions.

Technical Comparison for Different Rivet Sizes

Recommended Sampling Procedure

Before requesting a sample, prepare a clear test plan that identifies each rivet size, the material stack, panel thickness, joining position, and the expected joint performance. The trial should examine rivet head condition, penetration, underside formation, sheet damage, joint strength, and consistency across repeated samples.

If more than one rivet size is required, the evaluation should also confirm whether the same gun can be used with different dies or whether dedicated tooling is required. This distinction can affect equipment configuration, changeover time, and total project cost.

Frequently Asked Questions

Conclusion and Next Steps

An auto collision repair SPR system can be considered for testing with different rivet sizes, but the available specifications do not establish that one system will support all proposed sizes. The 1–80 kN precisely adjustable pressure range is suitable for controlled evaluation, while rivet and die compatibility must be confirmed through application testing.

Questok supports ODM and OBM cooperation, reports a minimum order quantity of one set, provides full inspection, and states a global after-sales response time of within 12 hours. For a detailed technical review or sample discussion, contact jane@questok.com with the complete application information.

About Questok

PHOTON TECHNOLOGY KUNSHAN CO.,LTD, operating under the Questok brand, develops fastening, joining, and assembly solutions for modern manufacturing. Established in 2011, the company’s R&D capabilities include industrial design, hydraulic systems, battery-powered tools, fastening process validation, and reliability testing. Its product range covers SPR riveting guns and systems, self-piercing riveting equipment, clinching machines, and fastener pressing tools. The company holds CE certifications and serves customers across several industrial sectors.