MAG Powertrain Coldforming racks are made of heavy duty, hardened and ground coldworked steel. Depending on part material and profile, 25,000 to over 300,000 working cycles can be performed with one set of racks. Racks can be reground several times. Their length is dependent on the type and size of the respective workpiece. Thread racks, oil groove racks and knurl racks generally require a tool length of 330 mm. Other standard rack sizes and their possible set-up combinations are shown in the chart.
In general, all involute splines can be rolled. The common standards are: DIN 5480, ISO 4156, ANSI 92.1-1970, ANSI B 92.2M-1980 and GOST 6033-51. The profiles shown can be rolled with a pressure angle of 25 to 45 degrees in accordance with the restrictions for maximum profile sizes shown in the chart on page 3. Additionally, special profiles with other standards can also be rolled.
