Shaping or slotting is largely used for cutting keyways that do not extend through the full length of the part. Like keyseating, shaping uses a single-point cutting tool for cutting, however, shapers are not guided through the cut on a fixed post. As such, shaper cuts are generally more susceptible to deflection than keyseater cuts. [9] Milling [ edit ] Saddle: Basically, there are two types of saddle keys: the flat saddle key and the hollow saddle key. The flat saddle key is a taper key that fits into a keyway in the hub and is flat on the shaft. It is most times utilised for light loads. The hollow saddle key is a taper key that fits in a keyway in the hub. The bottom of the key is shaped to fit the curved surface of the shaft. a b Cutting Keyways - Broaching, Keyseating, Wire-Cut EDM, Shaping, & Milling , retrieved 2014-12-03. Keyseaters, also known as keyseating machines and keyway cutters, are specialized machines designed to cut keyways. They are very similar to vertical shapers; the difference is that the cutting tool on a keyseater enters the workpiece from the bottom and cuts on the down-stroke, while the tool on a shaper enters the workpiece from the top and cuts downward. Another difference is a keyseater has a guiding system above the workpiece to minimize deflection, which results in a closer tolerance cut. The process starts by clamping the workpiece to the table with a fixture or vise. The workpiece is properly located and then the reciprocating arm is started. Some models have a stationary table so the cutter is fed horizontally into the workpiece, while others have a movable table that feeds the workpiece into a fixed cutter. These machines can cut other straight sided features other than keyways (see the picture). They can also produce blind slots, which are slots that do not extend through the whole workpiece. [7] [8] Wire-cut electrical-discharge machining (EDM) [ edit ] The woodruff key is a shaft key made in the form of a segment of a disk and used with shafts not more than 2¹/₂ inches in diameter.

Gib keys, or gib head keys, are tapered and notched machine keys that are used on power transmission keyed shafts to hold pulleys and gears tightly on the shaft. The head of the key serves as a concussion point for hammering without damage to the shaft of the key. Keyed Shafts can be found in industries ranging from automotive manufacturing to aerospace engineering. Professionals use them in everything from electric motors and transmissions to pumps and compressors. Find the Keyed Shafts You Need at Zoro They are mostly used to transmit only unidirectional torques subjected to lighter initial loads, or in applications that require periodic clearance or sliding of the hub, as the drive component may become free due to multi-axial torches, While the major loosens and gets trapped inside. Machine, the reason for failure. 4. Gib head keyOccasionally, the keys are formed inseparably with the shaft that fits into the keyway fitted to the hub. Such shafts are known as splendid shafts. These shafts usually have four, six, ten, or sixteen partitions. Peeled shafts are relatively stronger than single keyway shafts. a b c d Keys and Keyways (PDF), archived from the original (PDF) on 2011-06-14 , retrieved 2010-03-19. They are normally specified for shafts with 0.25 to 1.0-in. Diameter but larger square keys are available for shafts up to 6.5 inches. Diameter. Designers use them when they want as much depth as possible with rectangular keys. 3. Parallel Sunk key The keyway is similar to a parallel key except that it exits the tangent from the outer shaft to the inner shaft. What happens on the side of the heels of each key-way form against which the key sits, and transfers compressive force.

It can be replaced to provide a high degree of strength or wear resistance. Austenitic (300 Series) stainless steel shaft key material should be used where the material will be exposed to a highly corrosive environment. High-strength materials are required and martensitic stainless-steel shaft key material should be used when exposed to mildly corrosive environments. Benefits and limitations of keyed jointsWhen the connection rotates, the shaft and hub (mating part) exert opposing forces on the key, attempting to shear the key. The maximum torque that can be transmitted before exceeding the yield strength of the key is calculated as: You can easily find the appropriate connection method for your specific application based on the given information.

Containing teeth or ridges that allow them to mate with other components, splined shafts are primarily used to transfer torque throughout mechanical drive systems while allowing for linear motion, such as those found in vehicles. Normally, they are composed of different metals depending on the localized stresses they are expected to undergo. Their teeth or ridges equally distribute circumferential force to a mated component, facilitating a uniform transfer of torque between the mated pair. This also helps to prolong the lifecycle of the parts.

Feather Keys are a rectangular key connecting the keyways of a shaft and a hub of a gear, pulley, etc., fastened in one keyway and free to slide in the other so that the hub can drive or be driven by the shaft at various positions along with it. Feather keys are fully contained. It does not set-up to hold the key in position and the wing keys cannot move out of the assembly. Shaft keys (and machine keys) can be made from a variety of materials. Generally, shaft keys are built from carbon steel or stainless steel but can be made from brass, copper, aluminum, monel, and even nylon, all with material grades. AISI 316 stainless is also prepared for marine applications. Power transmission between two rotating components requires a secure connection between the shaft of the driving component, and the hub of the mating part. One way to ensure torque transmission without slipping is by using a keyed connection. For most automation applications (motors, gearboxes, pulleys, etc.), a parallel key, also known as a straight key, with a square cross-section is used. Parallel keys are commonly used in mechanical and automotive engineering because of their inefficiency, availability, and ease of installation.

cheaper options with no signature required. The no signature required options are at the customer’s risk once the goods leave our store. Registered Australian Company: Small Parts & Bearings Pty Ltd (ABN 79 121 865 414) - Trading as Bearing Shop Online Spoiled shafts are used when the force to be transmitted is proportional to the size of the shaft as in automobile transmission and sliding gear transmission. By using split shafts, we obtain axial movement as well as a positive drive. Material Selection for Shaft key A flat saddle key is a taper key that fits into the keyway in the hub and lies flat on the shaft. It is likely to round the shaft under load. Therefore, it is used for comparatively light loads.ball bearings, roller bearings, thrust bearings, ceramic and ceramic hybrid bearings, stainless steel bearings, miniature bearings, linear bearings, shafting, corrosion resistant bearings - see the full listing in the Keyed Shaft, what is a keyed motor shaft. In mechanical engineering, a key is a machine element used to connect a rotating machine element to a shaft. A machine runs by the power supplied to it by a prime mover such as motor, engine, etc. The power is then transmitted from the prime mover to the machine through a coupler which couples the shafts of the prime mover and the machine.