They run quieter compared to the straight, specifically at high speeds
They have an increased contact ratio (the number of effective teeth engaged) than straight, which increases the load carrying capacity
Their lengths are nice circular numbers, e.g. 500.0 mm and 1,000.0 mm, for easy integration with machine bed lengths; Straight racks lengths are usually a multiple of pi., e.g. 502.65 mm and 1005.31 mm.
A rack and pinion is a kind of linear Linear Gearrack actuator that comprises a pair of gears which convert rotational motion into linear motion. This mixture of Rack gears and Spur gears are generally known as “Rack and Pinion”. Rack and pinion combinations tend to be used as part of a straightforward linear actuator, where the rotation of a shaft driven by hand or by a engine 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 utilized as pinion gears with our Rack Gears.

The rack product range contains metric pitches from module 1.0 to 16.0, with linear force capacities as high as 92,000 lb. Rack styles include helical, directly (spur), integrated and round. Rack lengths up to 3.00 meters can be found standard, with unlimited travels lengths possible by mounting segments end-to-end.
Helical versus Straight: The helical style provides several key benefits more than the directly style, including:

These drives are ideal for an array of applications, including axis drives requiring precise positioning & repeatability, journeying gantries & columns, choose & place robots, CNC routers and material handling systems. Weighty load capacities and duty cycles can also be easily taken care of with these drives. Industries served include Material Managing, Automation, Automotive, Aerospace, Machine Tool and Robotics.

Timing belts for linear actuators are usually manufactured from polyurethane reinforced with internal steel or Kevlar cords. The most common tooth geometry for belts in linear actuators may be the AT profile, which has a big tooth width that delivers high level of resistance against shear forces. On the driven end of the actuator (where the motor is certainly attached) a precision-machined toothed pulley engages with the belt, while on the non-driven end, a flat pulley simply provides assistance. The non-driven, or idler, pulley is usually often utilized for tensioning the belt, although some designs provide tensioning mechanisms on the carriage. The kind of belt, tooth profile, and applied pressure pressure all determine the pressure which can be transmitted.
Rack and pinion systems found in linear actuators contain a rack (also referred to as the “linear equipment”), 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 system. One’s teeth of a rack and pinion drive could be straight 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 which can be transmitted is largely determined by the tooth pitch and how big is the pinion.
Our unique knowledge extends from the coupling of linear program components – gearbox, engine, pinion and rack – to outstanding system solutions. You can expect linear systems perfectly made to meet your specific application needs when it comes to the clean running, positioning accuracy and feed pressure of linear drives.
In the research of the linear movement of the apparatus drive system, the measuring system of the gear rack is designed in order to measure the linear error. using servo electric motor directly drives the gears on the rack. using servo engine directly drives the apparatus on the rack, and is based on the movement control PT point setting to realize the measurement of the Measuring distance and standby control requirements etc. Along the way of the linear motion of the gear and rack drive system, the measuring data is obtained by using the laser beam interferometer to measure the placement of the actual movement of the gear axis. Using minimal square method to solve the linear equations of contradiction, and also to expand it to a variety of situations and arbitrary number of fitting features, using MATLAB programming to obtain the actual data curve corresponds with style data curve, and the linear positioning accuracy and repeatability of equipment and rack. This technology could be extended to linear measurement and data evaluation of the majority of linear motion system. It may also be used as the basis for the automated compensation algorithm of linear motion control.
Consisting of both helical & straight (spur) tooth versions, in an assortment of sizes, components and quality amounts, to meet nearly every axis drive requirements.