Keyed Shaft, Dia. 5/8 In, 6 In L, CS

Product Information

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. Improperly machined keyways that had cutter deflection or drifting occur, may not be strong enough for the required application. [12] See also [ edit ] 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 ] There are various advantages and disadvantages of using shaft keys so granular detail of the overall design must be taken into account to evaluate the suitability of the keyed joint. Advantages of shaft key and Keyed joints 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.

A keyed connection allows for more tolerance between the shaft and hub, whereas in a keyless connection, the parts should be cleaned and machined to allow tolerances. a b c d Keys and Keyways (PDF), archived from the original (PDF) on 2011-06-14 , retrieved 2010-03-19. A saddle key is a key for securing a member to a machine shaft that fits into a keyway in the secured member and is concave to grip the shaft by friction compared to a flat key, or sunk key. 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 ]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.

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. The key in the radius end component keyway of the main funnel simplifies assembly. And wing keys are easily inserted into the shaft. The radius helps align the key in the shaft slot. Leonard, William Samuel (1919) [1905]. Machine-shop Tools and Methods (Revised 7thed.). New York: John Wiley & Sons. pp. 39–42. OCLC 848146647 . Retrieved 30 April 2019. 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.An installed wing key cannot run axially. This lets workers subsequently adjust the position of the mounted components along the shaft. The shaft key material must be chosen based on the operating environment. A designer must very carefully consider the loads that will be applied to the material and what kind of environment will be in the service. Carbon steel is used more broadly than any other material. Carbon steel provides very good strength through heat treatment.

These types of keys are generally attached to the driving member (e.g. shafts). These types of keys have less strength as compared with the sunk keys. These are rarely used keys, to transmit lower power to the driven members (e.g. couplings) Connecting a shaft and a part is most commonly done by driving a small piece of metal, which is known as the key between the shaft and the hole that has been created in part mounted over it. The key settles in between the shaft and is partly into the part mounted over it. Axial grooves, otherwise known as key ways are cut in the shaft and then in part mounted on it. Then, the key is fitted between the shaft and the attached portion.

Splined Shafts

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 joints 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. 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. 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.

Shigley, Joseph; Mischke, Charles (1989), Mechanical Engineering Design (5ed.), McGraw-Hill, ISBN 0-07-331657-1. Sunk: These keys are set half in the keyway of the shaft and half in the keyway of hub or boss of the pulley. They come in following six types: One part of the Shaft key fits into a precut slot in the shaft known as a key seat and the other part fits into a slot in the hub called a keyway. The whole system is called a keyed joint. A keyed joint may allow relative axial movement between the parts.There are two different types of connections between a shaft and a hub. This article will discuss the differences between the keyed shaft and keyless connections and their advantages/disadvantages. Keywayed shaft collars are a type of mechanical component used to position and secure components on a shaft when a precise fit and positional alignment are necessary. They have a keyway cut into them that aligns with a key on a shaft to prevent rotation relative to the shaft. These collars are tightened onto a shaft using a screw or clamp to maintain their position. This feature is especially useful in high-torque applications where the collar needs to transmit the rotational force without slipping. They are commonly used in various machinery, such as motors and gearboxes, to hold bearings in place, space components on shafts, or act as mechanical stops. Keywayed shaft collars ensure that the attached components are correctly aligned with the drive elements and do not drift during operation, thereby providing a reliable method for maintaining the assembly of mechanical parts in a variety of industrial and mechanical applications. Bhandari, V. B. (2007), Design of machine elements (2nded.), Tata McGraw-Hill, p.340, ISBN 978-0-07-061141-2. 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