Categories Starting with 'G'

Gaskets are mechanical components used to seal vacant spaces between two objects. Rubber, silicone, felt, cork, and other plastic polymers are used in fabricating gaskets.

A gravity conveyor is a roller or wheel conveyor over which objects are advanced manually by gravity.

A gearmotor is a type of electric motor that consists of an AC or DC motor built with an integrated gearbox. In this motor, the drive shaft of the electric motor is used to drive the set of gears in the gearbox, which in turn powers a secondary drive shaft at an appropriate speed. The gearbox is used to either step down or step up the speed of the electric motor, based on the requirements of the application; though in most cases the gearbox is a reduction gearbox. These reduction gearmotors are commonly used for applications that require increased torque with reduced output speed. Gearmotors are available in two configurations, inline gearmotors and right-angled gearmotors, which are classified based on the orientation of the secondary shaft to the motor.

Gear boxes are gear sets that transmit power from one rotating shaft to another. The box is constituted of a set of gears, as well as input and output shafts. In operation, they work by converting the power transmitted to the input shaft into required output, and subsequently transmitting output to the connected load via the output shaft. Areas of application include industries such as oil and gas, food and beverage processing, aerospace, recreational, automotive, material-handling and textiles.

Speed gear reducers, alternatively called gear heads or gear boxes, are used to decrease rotating speed, which is realized through an increment in torque and a decrement in output speed. Input, output shafts, and a set of gears are the constituents of the gear heads. The reducer receives input power from any source like motor and performs the task of converting this power into an output speed of lower magnitude; this lower-magnitude speed is transmitted to the connected load via an output shaft. These devices are employed in a variety of applications including printing presses, automation equipment, compressors, conveyors, pumps, generators and robotic applications.

Gear heads are speed reducers comprised of a set of gears, output and input shafts, bearings enclosed in a lubricated housing. Speed reduction is realized by these devices through a decrement in output speed and an increment in torque. Usage of these devices imparts better performance and speed optimization. Spur, helical, harmonic, cycloidal, bevel, worm and planetary arrangements are some of the gearing arrangements used for these devices. These devices are common in automation equipment, conveyors, compressors, pumps, printing presses and robotics. Areas of application include oil and gas, automotive, aerospace and textile industries.

A gate valve is a valve with a two seated gate like disk moving perpendicularly to the fluid flow. This valve is most often used fully open or fully closed providing excellent sealing and is often used in the chemical industry.

A globe valve is a multi-turn valve made up of a body, a bonnet, a valve seat, a valve plug, and a valve spindle. The valve spindle may or may not connect to an actuator. The valve spindle moves the plug, or closing element, in a direction perpendicular to the fluid flow and into the valve seat. This type of valve is excellent for throttling and general flow control.

A gas spring is a mechanical device that utilizes compressed gases to act as a spring, rather than a conventional metal spring. Gas springs consist of a piston enclosed by a sealed cylinder, with the piston rod extending out of the cylinder. The sealed cylinder is filled with gas, corresponding to the required force, which is variably compressed by the piston to create the force. These types of springs are commonly used in the automotive industry, where they are used to bear the weight of some components, such as the vehicle door. Some other industries that widely use gas springs are aerospace and medical.

Gear hobbing is a machining process that is employed for the production of gears, sprockets, and splines of various types. A specialized cutting tool, known as a hob, is used to gradually make a series of cuts in the work piece, to form splines or teeth. The inexpensive and accurate nature of this machining process accounts for its suitability in the production of various gears and sprockets. In fact, gear hobbing is the most commonly used machining process for the production of helical gears and spur gears.

A grease fitting, commonly known as a grease nipple or a zerk fitting, is a lubricating fitting found in most industrial equipment, electric motors, and mechanical systems. With a spring-loaded steel ball, a grease fitting looks similar to a bleeder valve used on hydraulic brakes. Grease fittings function as self-sealable connections through which grease is injected into the system for lubrication. Generally, the fitting is installed through a threaded connection, which leaves a nipple connection for a grease gun attachment. By means of pressure in the grease gun, grease is pumped into the system and the steel ball prevents the lubricant from flowing back. The major advantage of using grease fittings is that parts need not be disassembled for lubricating. Grease fittings are commonly made from stainless steel, zinc-plated steel, or brass.

A grooved pin is a parallel pin featuring three longitudinal equi-spaced grooves. These grooves are thrust into the cylindrical body either by rolling or pressing, to enlarge the diameter of the cylinder in a controlled and precise mode. A locking fit ensues when the pin is inserted into a drilled hole of suitable diameter. A straight drilling hole suffices without the necessity of reaming to achieve the locking fit. These pins are used as surrogates for locking devices, bearing faces, pivots, locating elements, stop pins and cotter pins. They are used in applications with end loads of lesser intensity.

A gas chromatography valve is a reducing valve employed in the mobile phase supply system of a gas chromatograph.