How long is a keyway?
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 are keyways in shafts?
Keyseat is a recess in the shaft and the Keyway is the recess in the hub to receive the key and thus securely lock the component. Generally, the term keyseat is rarely used as keyway is referred to both recesses in the industry (Figure 2).
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.
What is a keyway design?
Introduction To Mechanical Key: Keys are temporary fastening and are always made of mild steel because they are subjected to shearing and compressive stresses caused by the torque they transmit. • A keyway is the groove cut in the shaft or hub to accommodate a key. Keyways can be milled horizontally or vertically.
How do you measure the depth of a keyway?
The distance from the bottom of the shaft keyseat to the opposite side of the shaft is specified by dimension S. The distance from the bottom of the hub keyway to the opposite side of the hub bore is specified by dimension T….Depth Values for Shaft Keyseats – Hub Keyways:
| RESULTS | ||
|---|---|---|
| Nominal Shaft Diameter [D] | — | inch |
| Dimension S | — | |
| Dimension T | — |
How do you determine keyway?
Look at the large end of the key (also called the bow). If the bow has straight sides and a triangle-shaped top (like a house), you probably have a KW1 keyway. If the key is diamond-shaped (narrower at the top and bottom and wide in the middle), you probably have a SC1 keyway.
How do you determine key depth?
Measuring. The root depth is amount of material between the bottom of the key blade and the bottom of the key cut. You measure the root depth with your calipers. Measuring root depth with calipers.
What does KW1 mean on a key?
KW1 is the key blank number, indicating Kwikset keyway.
How do I find my lock keyway?
Identification Methods
- Name on the key or Lock: Kwikset or Schlage are the most common residential locks and keys.
- Name Abbreviation: Kwikset is “KW” and Schlage is “SC” The most common keyways are KW1 & SC1.
- Name on the lock latch: look at the edge of your door on the latch for a name.
What do numbers on keys mean?
Key Identification Numbers Keys are typically printed with an alphanumeric code called a key identification number, a key code or a key number that allows locksmiths and companies to replicate keys without the need to install a whole new lock system. Key codes fall into two categories: blind codes and bitting codes.
What is a key gauge?
A key gauge is a locksmithing tool used to decode the cut depths of a key. Key gauges are commonly used for key duplication, decoding, and creation of bump keys.
How to measure a keyway?
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How to dimension a keyway?
standard keyseat dimensions a b +0.000 -0.015: c +0.002 -0.000: d nominal shaft diameter bottom of shaft to bottom of keyway width reference depth
What is the standard key size?
– 4.0mm = 7 Key – 4.25mm = 8 Key – 4.5mm = 9 Key – 4.75mm = 10 Key – 5.00mm = 11 Key
What are the standard drill sizes?
What are the standard drill sizes? Range 1 (R1) is shortest in length, more common for sizing production tubing or casing, and ranges from 18 to 22 ft. Range 2 (R2) is considered the standard length for drill pipe and ranges from 27 to 31 ft. Range 3 (R3) is common in casing and also deployed in deep water drilling applications.