The Modular Rack & Pinion System is the primary building block of a linear axis drive. This system consists of a standard range of straight (spur), circumferential pitch, and helical racks and pinions. The modular design permits rack segment lengths from 0.5 to 2 meters to be linked together end to end achieving any desired travel length.*Four quality levels available, up to Hardened & Ground (AGMA 12) * Nine standard Modules from Module 1.0 to 10.0 (Diametral Pitch, P, 25.4 to 2.54) * Standard rack lengths up to 2.00 meters; longer travel lengths can easily be achieved by mounting the racks end-to-end * Special/modified designs are possible * Preloaded dual pinion gearboxes to eliminate axis backlash