Trolley

The trolley is mounted on ball bearings. Its axles are spring-suspended and can be recessed completely, so that they cannot be overloaded.
The trolley is designed for use with the track (337 130), but can also be used on LGB rail tracks (track gauge 45 mm). The wheels are designed so as to make the trolley self-centring, which reduces friction at the wheel sides. The wheel flange is built to allow the trolley to be used on a smooth surface without damaging the rail running surfaces.
A string holder is provided at both ends of the trolley for attaching springs, bushings for mounting the combination light barrier (337 462) and impact springs (337 112/337473) as well as Velcro fastenings for inelastic collisions. The top of the trolley is provided with M5 mounting threads that can also accommodate 4-mm plugs.