Guide to 3 Jaw Chuck

Guide to 3 Jaw Chuck

A chuck placed on the lathe spindle is a crucial part of the turning operation, operates as a clamping device to hold the workpiece securely and also safely. With several sorts of lathe chucks, the product to be turned can retain security and also be cut precisely. Among the generally made use of jawed chucks, we’ll speak about the three-jaw chuck as well as the distinction between 3 jaw chuck and also 4 jaw chuck.

What is 3 Jaw Chuck?

A chuck is a kind of clamp used to hold an object in a particular position, commonly used in the CNC machining factory, in exploration as well as milling, chucks hold the revolving tools, while in the turning procedure, various lathe chuck kinds are made use of for repairing the work surface. Lots of chucks have jaws that are tightened approximately to hold the tool or part. Machinists comprehend the term “three-jaw chuck” as a self-centring three-jaw chuck, additionally refers to global chuck, this kind is finest fit to grasp round and hexagonal items when needing extremely fast, reasonably exact focusing.

Exactly how Does a 3 Jaw Chuck Work?

Three-jaw chucks are commonly utilized on lathe machines and indexing heads. Every one of the jaws of three-jaw chucks is fitted into a scroll plate, which makes the 3 jaws move simultaneously when adjusted by the chuck wrench, then comprehends the turret part very swiftly as well as accurately. The jaws can be made in various sizes. What is a chuck trick made use of for? A chuck key or wrench is a tool made to tighten up or loosen the jaws of the chuck.

Distinction Between 3 Jaw Chuck as well as 4 Jaw Chuck

Distinction Between 3 Jaw Chuck as well as 4 Jaw Chuck

The most frequently made use of lathe chuck consisting of 3-jaw and 4-jaw. What’s the distinction between the four jaw chuck and three-jaw chuck?

Construction as well as motion

3 jaw chuck describes self-centring chuck, its jaws are interconnected using a scroll gear and relocate at the same time, while jaws on four-jaw chucks move independently and also need operators to centre the work surface.

Makes use of

Three-jaw chuck is the very best option for holding hexagonal or round cross-sections, while 4 jaw chuck is largely valuable for grasping a square or octagon block.

Setting time

Four jaw chucks often take longer to establish however can do more than a 3 jaw chuck.


3-jaw chuck with an accuracy degree of around 0.010 as well as the precision degree of 4-jaw chuck is between 0 and also 0.001.

Number of holes

The 3 jaw chuck has only one opening for the chuck wrench or secret to tighten or release the gripping, yet a four jaw chuck has four holes for regulating each jaw, one by one.

Deepness of cut

In a four-jaw chuck, the generated deepness of cut is greater than that in 3 jaw chucks.

Workpiece weight

Heavier stock can be turned in 4 jaw chuck however can not in three-jaw.

Gripping power

The gripping power of a 4 jaw chuck is larger than 3 jaws.


Eccentric turning is possible when the part is repaired in a 4 jaw chuck, which can not be performed in a 3 jaw chuck.

What are the Various Types of Lathe Chucks

  • Jawed chuck (3 jaws universal chuck & Four jaws independent chuck).
  • Collet chuck: connected to the pin by a nut, used for holding bar supply when manufacturing machined components requires fast setup and exact.
  • Drill chuck: a specialized self-centring, three-jaw chuck, typically with a capability of 0.5 in (13 mm) or less and made use of to hold drill bits or other rotary tools.
  • Magnetic chuck: hold magnetic products with the magnetic change emitting either from the electromagnets or the irreversible magnets, or where the stress of jaws will trigger distortion of the workpiece.
  • Combination chuck: made use of both as self-centring and also independent chuck.
  • Air operated chuck.

Similar Posts