They run quieter compared to the straight, especially at high speeds
They have an increased contact ratio (the number of effective teeth engaged) than straight, which escalates the load carrying capacity
Their lengths are nice round numbers, e.g. 500.0 mm and 1,000.0 mm, for easy integration with machine bed lengths; Directly racks lengths are generally a multiple of pi., electronic.g. 502.65 mm and 1005.31 mm.
A rack and pinion is a type of linear Linear Gearrack actuator that comprises a pair of gears which convert rotational motion into linear motion. This combination of Rack gears and Spur gears are usually known as “Rack and Pinion”. Rack and pinion combinations tend to be used as part of a simple linear actuator, where in fact the rotation of a shaft powered by hand or by a motor is converted to linear motion.
For customer’s that require a more accurate motion than common rack and pinion combinations can’t provide, our Anti-backlash spur gears are available to be used as pinion gears with our Rack Gears.

The rack product range consists of metric pitches from module 1.0 to 16.0, with linear force capacities as high as 92,000 lb. Rack styles include helical, straight (spur), integrated and circular. Rack lengths up to 3.00 meters can be found regular, with unlimited travels lengths possible by mounting segments end-to-end.
Helical versus Directly: The helical style provides a number of key benefits over the straight style, including:

These drives are ideal for a wide variety of applications, including axis drives requiring exact positioning & repeatability, touring gantries & columns, choose & place robots, CNC routers and materials handling systems. Large load capacities and duty cycles may also be easily taken care of with these drives. Industries served include Materials Managing, Automation, Automotive, Aerospace, Machine Device and Robotics.

Timing belts for linear actuators are usually made of polyurethane reinforced with internal steel or Kevlar cords. The most typical tooth geometry for belts in linear actuators may be the AT profile, which has a big tooth width that provides high level of resistance against shear forces. On the powered end of the actuator (where in fact the electric motor is certainly attached) a precision-machined toothed pulley engages with the belt, while on the non-driven end, a set pulley simply provides assistance. The non-powered, or idler, pulley is often utilized for tensioning the belt, even though some styles offer tensioning mechanisms on the carriage. The kind of belt, tooth profile, and applied stress force all determine the power that can be transmitted.
Rack and pinion systems used in linear actuators contain a rack (generally known as the “linear gear”), a pinion (or “circular equipment”), and a gearbox. The gearbox really helps to optimize the speed of the servo motor and the inertia match of the machine. One’s teeth of a rack and pinion drive could be directly or helical, although helical teeth are often used due to their higher load capability and quieter operation. For rack and pinion systems, the maximum force that can be transmitted is definitely largely dependant on the tooth pitch and the size of the pinion.
Our unique understanding extends from the coupling of linear program components – gearbox, electric motor, pinion and rack – to outstanding system solutions. We offer linear systems perfectly designed to meet your specific application needs when it comes to the clean running, positioning accuracy and feed pressure of linear drives.
In the study of the linear movement of the apparatus drive mechanism, the measuring platform of the apparatus rack is designed in order to gauge the linear error. using servo motor straight drives the gears on the rack. using servo motor directly drives the gear on the rack, and is dependant on the movement control PT point setting to realize the measurement of the Measuring distance and standby control requirements etc. In the process of the linear motion of the gear and rack drive system, the measuring data can be obtained utilizing the laser interferometer to measure the placement of the actual movement of the gear axis. Using the least square method to solve the linear equations of contradiction, and to extend it to a variety of occasions and arbitrary number of fitting functions, using MATLAB programming to obtain the actual data curve corresponds with design data curve, and the linear positioning accuracy and repeatability of equipment and rack. This technology can be extended to linear measurement and data evaluation of nearly all linear motion mechanism. It may also be utilized as the basis for the automated compensation algorithm of linear motion control.
Comprising both helical & directly (spur) tooth versions, in an assortment of sizes, materials and quality levels, to meet almost any axis drive requirements.