How do you design a shaft key?
Key dimensions: Parallel keys are most commonly used. The key and key seat cross section are ISO standardized. The key length should be less than about 1.5 times the shaft diameter to ensure a good load distribution over the entire key length when the shaft becomes twisted when loaded in torsion.
What is shaft and key?
A Shaft key is a piece of metal used to connect a rotating machine element to the shaft. A shaft key prevents a relative rotation between the two parts, and may enable torque transmission to occur.
What is shaft design?
Design of Shaft. Design of Shaft. A shaft is a rotating member usually of circular cross-section (solid or hollow), which transmits power and rotational motion.
What are keys used for in shafts?
In mechanical engineering, a key is a machine element used to connect a rotating machine element to a shaft. The key prevents relative rotation between the two parts and may enable torque transmission.
How much torque can a keyway handle?
where l, the effective length of the keyway, = 25 mm; and h, the keyway depth, = 3 mm. For the keyed shaft, Thus, 228 Nm is the maximum torque that can be transmitted before the 16-mm-diameter keyed shaft plastically deforms. Industrial applications commonly use flat keys.
What are design keys?
Key is a machine element which is used to connect the transmission shaft to rotating machine elements like pulley, gear, sprocket or flywheel. Keys provide a positive means of transmitting torque between shaft and hub of the mating element.
What is the purpose of key?
Keys are very important part of Relational database model. They are used to establish and identify relationships between tables and also to uniquely identify any record or row of data inside a table. A Key can be a single attribute or a group of attributes, where the combination may act as a key.
How shafts are used?
The term shaft usually refers to a component of circular cross-section that rotates and transmits power from a driving device, such as a motor or engine, through a machine. Shafts can carry gears, pulleys, and sprockets to transmit rotary motion and power via mating gears, belts, and chains.
What are shaft keys made of?
Typically, key stock is made from carbon steel or stainless steel, but can also be made from aluminum, brass, copper, monel, and even nylon, all with varying material grades. AISI 316 stainless is also available for marine applications.
What is a shaft a key and a keyway?
A key and the keyway make up a Keyed joint to secure the hub and the shaft to prevent relative movement between a power transmitting shaft and an attached component. For example, Gear drives, Pulleys or Sprockets are connected securely using keys to the power transmitting shaft (Figure 1).
How do you measure shaft key?
The size of a key is determined by the diameter of the shaft at the point of location of the key, regardless of the number of different diameters on the shaft. The designer chooses an appropriate key length to carry the torsional load. Failure of the key can be by direct shear, or by bearing stress.