How to choose the right gear
When selecting gears, there are various factors to consider, but in all cases, gears must be selected that are strong enough to withstand the load required for their intended use.
The first step is to determine the application’s required specifications. For example, how many kilograms of an object are to be moved in how many seconds, and then to calculate the load (torque) required to achieve those specifications.
In a pair of gears, the strength of the pinion gear is lower than that of the mating gear. Therefore, it is prudent to select the gears based on the pinion strength.
When choosing the gears, it is necessary to consider the bending strength and the surface durability of the teeth. The bending strength is the strength of the teeth against breakage, and the tooth surface durability is the strength of the tooth surface against wear such as fatigue damage.
In order to select gears that are strong enough to withstand the calculated load, it is necessary to select gears whose bending strength and tooth surface durability both exceed the calculated load.
Types of Gears Available from RARGears
At RARGears, we offer a comprehensive range of high-quality stock gears available to purchase online for engineering, automation, machinery, robotics, and power transmission applications. Selecting the correct gear type is just as important as calculating the required load and strength characteristics.
Our online gear shop includes:
- Spur Gears – The most common gear type, ideal for transmitting power between parallel shafts with high efficiency and reliability.
- Bevel Gears – Used to transmit motion between intersecting shafts, typically at 90-degree angles.
- Miter Gears – A type of bevel gear used where a 1:1 gear ratio is required for changing the direction of rotation.
- Rack and Pinion Gears – Convert rotary motion into linear movement and are widely used in automation systems, CNC machinery, and material handling equipment.
- Worm and Worm Wheels – Ideal for applications requiring high reduction ratios and increased torque in a compact design.
- Gear Racks – Available in various sizes and materials to complement rack and pinion assemblies.
Many of our gears are available in steel, stainless steel, plastic, brass, and other specialist materials, allowing designers and engineers to select the most suitable solution for their operating environment. Whether you require a standard stock gear for a replacement application or components for a new machine design, RARGears provides fast online access to a wide selection of precision-engineered gears from KHK Gears, Japan’s leading gear manufacturer.
Browse our full range of gears online at RARGears and find the ideal gear solution for your application.
