They run quieter than the straight, especially 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 fine round numbers, e.g. 500.0 mm and 1,000.0 mm, for easy integration with machine bed lengths; Directly racks lengths are often a multiple of pi., electronic.g. 502.65 mm and 1005.31 mm.
A rack and pinion is a kind of linear actuator that comprises a couple of gears which convert rotational motion into linear motion. This mixture of Rack gears and Spur gears are generally called “Rack and Pinion”. Rack and pinion combinations tend to be used within a straightforward linear actuator, where in fact the rotation of a shaft driven by hand or by a motor is changed into linear motion.
For customer’s that require a more accurate movement than normal rack and pinion combinations can’t provide, our Anti-backlash spur gears are available to be utilized 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, straight (spur), integrated and circular. Rack lengths up to 3.00 meters are available regular, with unlimited travels lengths possible by mounting segments end-to-end.
Helical versus Straight: The helical style provides many key benefits over the directly style, including:

These Linear Gearrack drives are ideal for an array of applications, including axis drives requiring specific positioning & repeatability, journeying gantries & columns, choose & place robots, CNC routers and material handling systems. Heavy load capacities and duty cycles can also be easily handled with these drives. Industries served include Materials Handling, 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 common tooth geometry for belts in linear actuators may be the AT profile, which includes a huge tooth width that delivers high level of resistance against shear forces. On the driven end of the actuator (where the engine is attached) a precision-machined toothed pulley engages with the belt, while on the non-driven end, a set pulley simply provides guidance. The non-powered, or idler, pulley can be often utilized for tensioning the belt, even though some designs offer tensioning mechanisms on the carriage. The type of belt, tooth profile, and applied stress drive all determine the push which can be transmitted.
Rack and pinion systems found 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 rate of the servo motor and the inertia match of the machine. The teeth of a rack and pinion drive can be directly or helical, although helical tooth are often used because of their higher load capacity and quieter operation. 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 understanding extends from the coupling of linear system components – gearbox, electric motor, pinion and rack – to outstanding system solutions. We offer linear systems perfectly designed to meet your specific application needs in terms of the soft running, positioning precision and feed pressure of linear drives.
In the research of the linear motion of the apparatus drive system, the measuring platform of the gear rack is designed to be able to measure the linear error. using servo engine directly drives the gears on the rack. using servo motor directly drives the apparatus on the rack, and is dependant on the motion control PT point setting to realize the measurement of the Measuring range and standby control requirements etc. Along the way of the linear movement of the gear and rack drive system, the measuring data can be obtained utilizing the laser beam interferometer to measure the placement of the actual movement of the apparatus axis. Using minimal square method to solve the linear equations of contradiction, and also to prolong it to any number of situations and arbitrary amount of fitting functions, using MATLAB programming to obtain the real data curve corresponds with design data curve, and the linear positioning precision and repeatability of equipment and rack. This technology can be prolonged to linear measurement and data analysis of the majority of linear motion system. It may also be utilized as the foundation for the automatic compensation algorithm of linear movement control.
Consisting of both helical & directly (spur) tooth versions, in an assortment of sizes, materials and quality amounts, to meet almost any axis drive requirements.