In automated body-in-white welding lines, Franke’s recirculating ball bearing assemblies form the core of the precision slides that position welding guns and clamps. These slides carry the welding equipment along three-dimensional paths, allowing the guns to reach every spot on the car body with millimeter accuracy. The bearing’s smooth, low-friction travel ensures that the slides accelerate and decelerate without hesitation, matching the cycle time of the line. Inside the slide housing, the balls recirculate continuously, distributing the load evenly across the raceways so that the welding gun remains perfectly aligned even when the robot arm changes direction or speed. This stability is critical when joining thin-gauge steel panels, where misalignment can cause inconsistent welds or spatter. On the shop floor, the same bearing assemblies are also found in the adjustable stops and locating fixtures that hold body panels in place before welding, where their repeatable positioning allows quick changeovers between different car models without recalibration.