Material: 16MnCr5, teeth induction hardened to about 60 HRC. After hardening ground all around. As only the teeth are hardened subsequent drilling and pinning is easily possible. Helical tooth system, right hand 19° 31' 42''. Teeth milled, hardened and ground. Tooth quality 6h25. For continuous linking. See also the matching left hand-toothed counterparts to simplify the mounting. Note: These right-handed racks are designed to be used in combination with our helical-toothed left-handed gears. 1) GTf /300 = total pitch error, i.e. the max. permissible deviation (per 300 mm) of the measured length of the rack compared to the theoretical length L300, with L300 = (m / cos ß) * p * z300). *Tangential force at tooth, calculated for z = 20. With a smaller number of teeth, the tangential force has to be reduced by 10%.