They run quieter compared to the straight, specifically at high speeds
They have an increased contact ratio (the amount of effective teeth engaged) than straight, which increases the load carrying capacity
Their lengths are good circular numbers, e.g. 500.0 mm and 1,000.0 mm, for easy integration with machine bed lengths; Straight racks lengths are constantly 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 movement. This mixture of Rack gears and Spur gears are usually 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 want a more accurate motion than regular 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 contains 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 Directly: The helical style provides several key benefits over the straight style, including:
These drives are perfect for a wide selection of applications, including axis drives requiring precise positioning & repeatability, vacationing gantries & columns, pick & place robots, CNC routers and materials handling systems. Heavy load capacities and duty cycles may also be easily taken care of with these drives. Industries served include Materials Handling, Automation, Automotive, Aerospace, Machine Device 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 huge tooth width that provides high level of resistance against shear 
forces. On the powered end of the actuator (where the electric motor is attached) a precision-machined toothed pulley engages with the belt, while on the non-driven end, a flat pulley simply provides guidance. The non-driven, or idler, pulley is definitely often used for tensioning the belt, although some styles provide tensioning mechanisms on the carriage. The kind of belt, tooth profile, and applied tension pressure all determine the push that can be transmitted.
Rack and pinion systems found in linear actuators consist of a rack (generally known as the “linear equipment”), a pinion (or “circular equipment”), and a gearbox. The gearbox helps to optimize the rate of the servo electric motor and the inertia match of the machine. One’s teeth of a rack and pinion drive can be straight or helical, although helical teeth are often used due to their higher load capacity and quieter procedure. For rack and pinion systems, the maximum force that can be transmitted is definitely 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 made to meet your specific application needs when it comes to the soft running, positioning accuracy and feed force of linear drives.
In the research of the linear motion of the gear drive mechanism, the measuring system of the gear rack is designed in order to measure the linear error. using servo motor straight drives the gears on the rack. using servo electric motor directly drives the Linear Gearrack apparatus on the rack, and is based on the movement control PT point mode to recognize the measurement of the Measuring distance and standby control requirements etc. In the process of the linear motion of the gear and rack drive mechanism, the measuring data is definitely obtained by using the laser beam interferometer to gauge the placement of the actual motion of the apparatus axis. Using minimal square method to solve the linear equations of contradiction, and to prolong it to a variety of situations and arbitrary quantity of fitting functions, using MATLAB development to obtain the real data curve corresponds with style data curve, and the linear positioning precision and repeatability of gear and rack. This technology can be prolonged to linear measurement and data evaluation of nearly all linear motion system. It can also be utilized as the basis for the automatic compensation algorithm of linear motion control.
Comprising both helical & straight (spur) tooth versions, in an assortment of sizes, materials and quality levels, to meet nearly every axis drive requirements.