RailMAB 915 with electric motor and RailMAB 965 with HONDA petrol engine Both systems are easily fixed to the rails with a rapid clamping system. The multitude of optionally available drill adapters greatly increases the flexibility and the ease of use of the two core drilling machines. The track construction machine range is topped off with the BDS special drills of the carbide RAIL series, which have a cutting depth of 30 mm and a diameter of 16 mm to 36 mm. The drill on both machines is lubricated and cooled through an external attachable high-pressure storage tank. Use the cooling lubricant concentrate BDS 6000 to cool and lubricate the machine.