What is DIN 6885 A?

Metric DIN 6885 Parallel Key High Type “A” (aka feather keys) is a component used to connect machine assemblies to a shaft in order to prevent relative rotation between the two parts.

What is a feather key used for?

Feather keys are used where the parts mounted on the shafts are required to slide along the shaft such as clutches for gear shifting devices. It is an alternative to a splined connection.

What is parallel key in piano?

In music, a major scale and a minor scale that have the same tonic are called parallel keys and are said to be in a parallel relationship. The parallel minor or tonic minor of a particular major key is the minor key based on the same tonic; similarly the parallel major has the same tonic as the minor key.

What is a Kennedy key?

[′ken·ə·dē ‚kē] (design engineering) A square taper key fitted into a keyway of square section and driven from opposite ends of the hub.

What is a saddle key?

Definition of saddle key : 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 — compare flat key, sunk key.

What is H in tolerance?

Tolerance Symboles:The tolerance symbol is established by combining the IT grade number and position letter for tolerance. Capital letter like “H” for hole, and lower case letter like “h” for shaft.

What are ISO tolerances?

ISO System of Limits and Fits (Tolerances) It represents the nominal dimension that is referenced by the deviation and tolerances. The fundamental deviation determins the position of the tolerance zone with respect to the zero line.

Can a song have two keys?

Commonly, songs can use two keys: the main key, and then a modulation to a key that is a 5th apart. For instance, starting a song in C major but having a section that goes to G major (G is the 5 chord in the key of C) and then returning to C at the end.

What is a Subtonic in music?

In natural minor, the seventh note is a whole step below the tonic. In this case, the note is called a subtonic. In natural minor, the seventh note is a whole step below the tonic. In this case, the note is called a subtonic (or “flattened leading note”).

Are Kennedy keys tapered?

A square taper key fitted into a keyway of square section and driven from opposite ends of the hub.

What are disadvantages of saddle keys?

Saddle Keys: ( Types of Shaft Keys ) As compared with sunk keys, these keys cannot sunk in shaft and hub, they can sunk in the hub only.