Steering is an essential part of every vehicle. Because without it, the vehicle cannot be controlled in any direction. Rack and pinion is an important part of the steering system of vehicles.
But do you know how steering works? And what parts are used in steering? The main two parts commonly used in steering are the “rack and pinion”. On the basis of which the steering of any vehicle works.
In this article, we will discuss in detail the steering rack and pinion of the vehicle.
What Is A Rack And Pinion Steering
Rack and pinion is used to make the steering of any vehicle functional. which converts rotational motion into linear motion. The steering system of any vehicle works on the principle of rack and pinion.
Rack and Pinion is a kind of linear motion mechanism system. This system consists of a pair of gears that convert rotational motion into linear motion. Which moves like motion right and left.
The rack and pinion consist of a gear with circular teeth that is rotated by rotational motion. which is called a pinion. and is attached to it on a “linear gear” bar called the rack.
When the rotational motion is actuated by the pinion. The rack then moves with a linear motion to the right and left. This causes the wheels of the vehicle to turn either to the right or to the left and varies the speed of the vehicle according to the turn.
Rack and pinion are used in the steering system of about 85% of vehicles. because the rack and pinion in the steering system are easy to design and fit.
Types Of Rack And Pinion
Generally, two types of rack and pinion are used in the steering systems of vehicles.
- End Take Off: Tie rods are attached to the end of the steering rack via internal axial rods. by which the direction of the wheels of the vehicle is controlled.
- Center Take-Off: Bolts connect the tie rods to the center of the steering rack. by which the rake turns the wheels of the vehicle according to the prescribed direction.
How Does Rack And Pinion Steering Work
To convert the circular motion of the steering wheel into the linear motion required to turn the wheels, a rack and pinion steering gear system is used. The gearset is housed in a metal tube. The rack can be attached to the axial rod using apertures at each end of the tube.
The pinion gear is attached to the steering shaft so that when the steering wheel is rotated, the gear will rotate and move the rack. A tie rod end that is attached to the axle by axial rods.
Due to which the rack turns the wheels of the vehicle to the right or left according to it. In this system, the pinion is rotated by rotational motion, and the rack moves to the right or left by linear motion.
Rack And Pinion Parts
The Main Parts of Rack and Pinion
- Tie rods
- Ball joint
- Rack bush
- Screw adjustment
The rack is a gear quadrilateral bar. where there are teeth in the center, which provide linear motion, and with the help of a tie rod and ball joint, it works to turn the wheels of the vehicle in the specified direction. The rack moves from right to left, converting the rotational motion into linear motion.
A pinion is a type of metal, circularly toothed gear that is attached to the teeth of the rack. And the pinion is rotated by the rotational motion from the steering rod. Thereby, the rack provides linear motion. and moves in the right and left directions.
The pinion is rotated by the driver with the steering wheel. The pinion is installed at the base of the steering column assembly. The rack moves left and right in response to the rotation of the pinion.
Construction of Rack Pinion Steering
In the construction of the steering rack and pinion, the steering wheel is mounted in one upper end of the steering shaft. And at the other end, a metal-toothed pinion is attached. which is combined with the teeth of the rack. when the pinion is rotated with the steering wheel.
The pinion rotates and pushes the rack to the right and left in a linear motion. The rack assembly has metal bushings on either side of the rack, which provide smooth movement.
And don’t let the rack move and rattle. Due to this, there is no bad sound in the steering system in any way while driving the vehicle on a broken road.
Rack And Pinion Ratio
The ratio of the rack and pinion depends on the size of the steering and how it is used on the vehicle. The more teeth in the pinion gear, the more rotations the pinion has to do. Due to this, the rack will move slowly to the right or left.
With a more toothed gear in the pinion, the steering will act very lightly. But the steering wheel will have to rotate more to cut the turns of a vehicle.
For example, if the gear on the pinion has 60 teeth and you run on a 20-tooth gear, So dividing 20 by 60 gives a ratio of 3/1. which would mean that the larger gear would turn once for every three revolutions made by the driver gear. And this ratio can be increased or decreased by increasing or decreasing the number of teeth.
Power Rack And Pinion Steering
In cars with power steering, the rack and pinion design is different from normal steering. This type of rack and pinion steering has two metal tubes mounted on the side of the rack, which has a piston attached to the power rack with two oil chambers.
The steering module from this oil chamber is acted upon by two oil pressure pipelines on the principle of pressure on the piston and return pressure. In this case, the piston is moved by high oil pressure in the steering.
which is attached to the piston rack. Electric or hydraulic pumps are used in this system. which is pressurized with high oil pressure on the piston.
Rack And Pinion Replacement Cost
- Rack And Pinion Replacement Cost – $1200 to $1500
- Rack And Pinion Repair Cost – $300 to $800
- Mechanic Labor – $200 to $500
Steering rack and pinion repair and replacement cost of any vehicle can be decided depending on the model of the vehicle and the rack and pinion defect.
Rack and pinion repair costs typically range from $300 to $800, and the cost of replacing the rack and pinion can range from $1200 to $1500. The labor cost for a mechanic to repair and replace the steering rack and pinion can range from $200 to $500.
However, the labor cost of a mechanic can be more or less, depending on the location and level of repair.
Q. – What is rack and pinion
A. – Rack and pinion is a mechanism for turning the wheels of any vehicle in a specified direction. in which a set of two gears is installed. which converts rotational motion into linear motion.
Q. – Can it be dangerous to drive a vehicle with a bad rack and pinion?
A. – This can be dangerous if the vehicle is driven for an extended period of time with the rack and pinion steering in poor condition. Due to this, the steering system of the vehicle may fail and the vehicle may lose control while moving.
Q. – How much can a rack and pinion repair and replacement cost?
A. – Rack and pinion repair costs typically range from $300 to $800. And the cost of replacing the rack and pinion can range from $1200 to $1500.
Banty is the owner of Autorepairszone.com & is also a vehicle mechanic by profession. We have almost 12 years of experience in the field of automotive repair, and we strive to provide you with accurate information about vehicle malfunctions and repairs based on our experience.