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In recent years, car makers have announced large-scale recalls for a host of reasons—one of the most common being loose or under-tightened bolts. Subaru, for example, had to recall 383 vehicles in the U.S. because an assembly worker used the wrong wrench and left some nuts under-torqued. BMW, VW, Toyota, Mercedes-Benz and others have issued similar recalls. A single “tiny” bolt can shatter consumer confidence, damage brand equity and, more critically, put lives at risk.

Why bolt tightening matters
? Under-torque → joint loosening, roadside breakdowns.
? Over-torque → thread stripping or component cracking.
Either scenario can lead to catastrophic failure. Tightening quality is therefore a direct determinant of automotive safety and reliability.

Solution:
Danikor, a Chinese pioneer in automated tightening, leverages decades of application experience to deliver an Intelligent screwdriver that turns every bolt into a data-driven, traceable joint.

Core advantages

1. Lower operator fatigue – ergonomic, lightweight tool cuts tightening time.

2. Higher joint integrity – real-time torque/angle monitoring, in-cycle OK/NG feedback and poka-yoke alerts slash the risk of missed or over-torqued bolts.

3. Full traceability – every tightening curve, torque and angle value is logged and can be exported for audit, warranty analysis or Industry 4.0 dashboards.

Already widely deployed in electronics, the Danikor Intelligent Nutrunner is now integrated with robots on automotive seating, battery pack and e-motor lines, enabling fully automatic tightening and steering manufacturers toward digital, smart and lean production.

Beyond “volume vs. price,” today’s competition is “quality vs. technology.” Guided by the motto “All R&D starts with tightening,” Danikor will continue to provide complete turnkey tightening solutions—robot-mounted or handheld—that solve complex, low-volume, high-mix assembly challenges while driving down cost, scrap and rework.