In this article we discuss about the new topic Saddle keys - Mechanical Engineering it is important topic in manufacturing process so let's start,
Saddle key - Mechanical Engineering
A saddle key is a key that fits into a keyway of hub only. In this case there is no keyway on shaft.
There is two types of keys hollow and flat. A hollow saddle key has concave surface to at bottom to match the surface of the shaft. Bottom surface of the saddle key is flat. In both type of saddle key, friction between shaft, hub and key prevent respective motion between hub and shaft. By friction power is transmitted.
Saddle keys are acceptable for light duty applications. By comparing sunk keys low power is transmitted. Cost of saddle key joint is less than sunk key.
Saddle keys - Mechanical Engineering |
There are two types of saddle keys
1) Hollow saddle key:-
A hollow saddle is concave surface to the bottom to compare the round surface of shaft. flat and hollow saddle keys having taper of 1 in 100 on face contact of the hub.
A hollow saddle key, also known simply as a saddle key, is a type of wrench used primarily for tightening or loosening bolts or nuts in narrow or recessed spaces. It has a hollow, tube-like shape with a socket at one end to fit onto the bolt or nut. The opposite end typically has a handle or lever for applying torque.
The design of the hollow saddle key allows it to be used in situations where a traditional wrench or socket wrench might not fit due to limited clearance or obstacles around the fastener. Its hollow center allows it to fit over a protruding shaft or rod, making it useful in various mechanical and automotive applications.
These keys come in different sizes to accommodate various bolt and nut sizes, and they may have different shapes or configurations depending on the specific use case. They are commonly used in automotive repair, machinery maintenance, and other mechanical tasks where space is limited.
2) Flat saddle key:-
A flat saddle key is flat surface at the bottom and flat surface is machined on the shaft. Resistance of flat key is more than hollow saddle key with the concave surface.
A flat saddle key, also known as a flat saddle wrench, is a specialized tool used for tightening or loosening bolts or nuts in tight spaces or recessed areas. Unlike traditional wrenches that have a solid construction, a flat saddle key has a flat, thin profile that allows it to fit into narrow gaps or areas where there is limited clearance.
The design of a flat saddle key typically consists of a flat, elongated body with a socket or opening at one end that fits over the bolt or nut. The opposite end usually features a handle or lever for applying torque to the fastener. This design allows the flat saddle key to reach bolts or nuts that are recessed or located in hard-to-reach areas, such as inside machinery or equipment.
Flat saddle keys come in various sizes to accommodate different bolt and nut sizes, and they may have different handle configurations depending on the specific application. They are commonly used in automotive repair, bicycle maintenance, and other mechanical tasks where space is limited and standard wrenches cannot be used.
flat saddle key |
What are the advantages and disadvantages of a saddle key over a flat key?
a saddle key compared to a flat key:
Advantages of Saddle Key:
Increased Security: Saddle keys are typically more complex in design, which can make them more secure against picking and unauthorized duplication.
Durability: Saddle keys often have a thicker and more robust construction compared to flat keys, making them more durable and resistant to wear and tear.
Enhanced Grip: The saddle shape of the key provides a better grip for turning the lock, especially in situations where the key may be wet or slippery.
Key Control: Saddle keys are often used in systems that require strict key control measures, allowing for better tracking and management of key distribution and access.
Disadvantages of Saddle Key:
Bulkiness: The saddle design can make the key bulkier compared to flat keys, which may be inconvenient for carrying multiple keys or fitting them into smaller spaces such as wallets or pockets.
Limited Compatibility: Saddle keys are not as commonly used as flat keys, which means they may not be compatible with all types of locks and key systems.
Cost: Saddle keys are often more expensive to manufacture due to their complex design, which can increase the overall cost of key replacement or duplication.
Specialized Equipment: Some locksmiths may require specialized equipment to cut and duplicate saddle keys, which can limit the availability of these services in certain areas.
These points can vary depending on the specific design and use case of the keys, but they generally outline the pros and cons of saddle keys compared to flat keys.
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