They run quieter compared to the straight, especially at high speeds
They have a higher contact ratio (the amount 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; Straight racks lengths are at all times a multiple of pi., e.g. 502.65 mm and 1005.31 mm.
A rack and pinion is a kind of linear actuator that comprises a set of gears which convert rotational motion into linear motion. This combination of Rack gears and Spur gears are generally called “Rack and Pinion”. Rack and pinion combinations tend to be used as part of a simple linear actuator, where the rotation of a shaft run yourself or by a motor is converted to linear motion.
For customer’s that want a more accurate movement than common rack and pinion combinations can’t provide, our Anti-backlash spur gears can be found to be used as pinion gears with this Rack Gears.

The rack product range consists of metric pitches from module 1.0 to 16.0, with linear force capacities of up to 92,000 lb. Rack styles include helical, directly (spur), integrated and circular. Rack lengths up to 3.00 meters are available standard, with unlimited travels lengths possible by mounting segments end-to-end.
Helical versus Straight: The helical style provides many key benefits more than the directly style, including:

These drives are perfect for a wide selection of applications, including axis drives requiring exact positioning & repeatability, traveling gantries & columns, choose & place robots, CNC routers and materials handling systems. Heavy load capacities and duty cycles may also be easily handled with these drives. Industries served include Materials Managing, Automation, Automotive, Linear Gearrack Aerospace, Machine Tool and Robotics.

Timing belts for linear actuators are typically manufactured from polyurethane reinforced with internal metal or Kevlar cords. The most typical tooth geometry for belts in linear actuators may be the AT profile, which has a large tooth width that delivers high level of resistance against shear forces. On the driven end of the actuator (where the motor is definitely attached) a precision-machined toothed pulley engages with the belt, while on the non-driven end, a flat pulley simply provides guidance. The non-powered, or idler, pulley is definitely often used for tensioning the belt, although some styles offer tensioning mechanisms on the carriage. The type of belt, tooth profile, and applied pressure drive all determine the force that can be transmitted.
Rack and pinion systems used in linear actuators consist of a rack (generally known as the “linear gear”), a pinion (or “circular gear”), and a gearbox. The gearbox helps to optimize the rate of the servo motor and the inertia match of the machine. The 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 procedure. For rack and pinion systems, the utmost force which can be transmitted can be largely dependant on the tooth pitch and how big is the pinion.
Our unique knowledge extends from the coupling of linear program components – gearbox, motor, pinion and rack – to outstanding system solutions. We offer linear systems perfectly designed to meet your unique application needs in conditions of the simple running, positioning precision and feed force of linear drives.
In the research of the linear motion of the apparatus drive system, the measuring system of the gear rack is designed to be able to gauge 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 dependant on the motion 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 apparatus and rack drive mechanism, the measuring data is definitely obtained by using the laser beam interferometer to gauge the placement of the actual movement of the apparatus axis. Using the least square method to resolve the linear equations of contradiction, and to extend it to any number of occasions and arbitrary quantity of fitting features, using MATLAB programming to obtain the actual data curve corresponds with design data curve, and the linear positioning precision and repeatability of equipment and rack. This technology can be extended to linear measurement and data evaluation of the majority of linear motion mechanism. It can also be used as the foundation for the automatic compensation algorithm of linear motion control.
Consisting of both helical & straight (spur) tooth versions, within an assortment of sizes, components and quality amounts, to meet almost any axis drive requirements.