What Is a Ratchet Handle?
A ratchet handle is part of a socket wrench, a tool for turning and tightening nuts and bolts. It is used in conjunction with a socket, which is chosen based on the size of the nut or bolt being worked on.
There are various types of ratchet handles. The most common is the ratchet handle with a ratchet mechanism. Other types include spinner handles, which allow for adjustable tip angles, and T-shaped handles, each serving different functions.
Uses of Ratchet Handles
Ratchet handles are essential for applying the necessary torque when tightening or loosening bolts and nuts. By adjusting the handle length, these tools can generate significant rotational force, enabling efficient tightening. Short-handled ratchet handles are particularly useful in confined spaces.
Principle of Ratchet Handles
A socket wrench typically comprises a ratchet handle and a socket. For compatibility, matching the sizes of the handle and socket is crucial. Adapters are used when their sizes differ. Additionally, long bars or extension bars can be attached to reach nuts located in hard-to-access areas.
To angle a socket, a universal joint can be employed, allowing the socket to tilt at various angles relative to the ratchet handle.
The ratchet mechanism, comprising a gear and a pawl, facilitates unidirectional rotation. The pawl allows forward motion without engaging the gear but locks in the reverse direction. This mechanism enables tightening or loosening by a back-and-forth motion.