Union RTMDSS-45 Crankshaft Grinding Machine. Manual Union (Naxos-Union and WMW) RTMDSS-45 Crankshaft Grinding Machine Swing Diameter 440mm capacity between centres 750mm. Very Detailed Operator's Instruction and Maintenance Manual with blue-print electrical diagrams. Manufacturers: Naxos Union WMW Models: RTMDSS-45 Contents: Operators Manual Maintenance Manual