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 wonderful round numbers, e.g. 500.0 mm and 1,000.0 mm, for easy integration with machine bed lengths; Straight racks lengths are always a multiple of pi., e.g. 502.65 mm and 1005.31 mm.
A rack and pinion is a type of linear gearrack china linear actuator that comprises a set 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 are often used as part of a simple linear actuator, where the rotation of a shaft run by hand or by a engine is changed into linear motion.
For customer’s that require a more accurate motion than regular 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 includes 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 round. 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 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, traveling gantries & columns, pick & place robots, CNC routers and materials handling systems. Large load capacities and duty cycles may also be easily dealt with with these drives. Industries served include Materials Managing, Automation, Automotive, Aerospace, Machine Tool and Robotics.
Timing belts for linear actuators are typically made of polyurethane reinforced with internal metal or Kevlar cords. The most common tooth geometry for belts in linear actuators may be 
the AT profile, which has a large tooth width that provides high resistance against shear forces. On the powered end of the actuator (where in fact the electric motor is definitely attached) a precision-machined toothed pulley engages with the belt, while on the non-driven end, a set pulley simply provides assistance. The non-driven, or idler, pulley is often used for tensioning the belt, even though some designs offer tensioning mechanisms on the carriage. The kind of belt, tooth profile, and applied tension drive all determine the drive that can be transmitted.
Rack and pinion systems found in linear actuators consist of a rack (also referred to as the “linear gear”), a pinion (or “circular equipment”), and a gearbox. The gearbox helps to optimize the acceleration of the servo engine and the inertia match of the system. The teeth of a rack and pinion drive could be straight or helical, although helical tooth are often used due to their higher load capability and quieter procedure. For rack and pinion systems, the maximum force which can be transmitted is largely determined by the tooth pitch and the size of the pinion.
Our unique knowledge extends from the coupling of linear system components – gearbox, motor, pinion and rack – to outstanding system solutions. We offer linear systems perfectly designed to meet your specific application needs in conditions of the even running, positioning accuracy and feed pressure of linear drives.
In the research of the linear movement of the gear drive system, the measuring system of the apparatus rack is designed in order to measure the linear error. using servo electric motor straight drives the gears on the rack. using servo engine directly drives the gear on the rack, and is based on the motion control PT point mode to realize the measurement of the Measuring range and standby control requirements etc. In the process of the linear motion of the apparatus and rack drive mechanism, the measuring data is obtained by using the laser interferometer to measure the position of the actual motion of the gear axis. Using minimal square method to resolve the linear equations of contradiction, and to extend it to any number of occasions and arbitrary number of fitting functions, using MATLAB development 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 prolonged to linear measurement and data evaluation of the majority of linear motion system. It can also be utilized as the basis for the automatic compensation algorithm of linear motion control.
Consisting of both helical & straight (spur) tooth versions, in an assortment of sizes, materials and quality amounts, to meet almost any axis drive requirements.