Key Fasteners Flashcards
A key fastener secures the shaft to other devices such as couplings, sheaves, and ________.
Gears
A key fastener consists of up to three parts which are the key, keyseat-shaft, and _________.
Keyseat-hub
A key is a piece of metal that fits snugly between two ________.
Grooves
A ________ key is a tapered square key with a head on it.
Gib Head
A _______ key is shaped like a half moon.
Woodruff
A key is made from ________ which is cut to the length needed and the burrs filed off.
key stock
The ________ tolerance is also called a negative tolerance or minus tolerance. It has a zero upper tolerance of 0.000 to -0.001 inch.
undersize
An ________ key tolerance, or plus tolerance, means that the lower tolerance is zero. A typical plus tolerance is +0.002 to 0.000 inch.
oversize
There are three measuring tools used to measure the key and keyseat: _________, micrometer, and rule.
Dial caliper
The __________ has the ability to measure the inside width of a keyseat and the depth of the keyseat.
Dial caliper
A ______ measures the length of a keyseat.
Rule
A key stock which is purchased from a supplier has a __________.
specific tolerance
A prony brake is a device used to apply a _______ to a motor.
Load
Work is defined as force times __________.
Distance
Besides a Prony break A _____________ is used to load a mechanical drive system.
dynamometer
