KitagawaHard Jawssuit Power Chucks
Kitagawa hard jaws provide an effective and reliable solution for securely holding workpieces during first-operation machining. Their hardened, rugged gripping faces bite into the workpiece to provide a strong, dependable grip, helping to minimise movement under machining loads.
Kitagawa hard jaws offer defined gripping ranges for both external and internal workholding, depending on the chuck and jaw combination. Refer to the relevant chuck specification to confirm the minimum and maximum gripping diameters.
The HB Series is designed for use with Kitagawa power chucks and are available in a range of sizes and configurations to suit compatible chuck models. Kitagawa hard jaws are a durable choice for both general-purpose and demanding workholding applications.

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Hard JawsFAQs
We’ve answered some of the most common questions.
If your question is not covered, please get in touch.
Hard jaws must be selected according to the exact Kitagawa chuck model and size. Chucks of the same nominal diameter may require different jaw configurations, serrations or mounting dimensions. Always confirm the chuck model before ordering.
If you are unsure, provide Dimac with the chuck model shown on its identification plate and we can confirm the correct hard jaws.
Hard jaws are hardened and provide a strong,durable grip. They are commonly used for first-operation machining and gripping unmachined material.
The gripping range depends on the combination of the hard-jaw model and compatible Kitagawa power chuck. Refer to the Grip Range and Configuration links shown on the product page for the relevant chuck series.
If you’re unsure which gripping range applies, contact Dimac with your chuck model and hard-jaw model and we can help confirm the correct configuration.
Bar Gripper Jaws are designed for gripping smaller-diameter bar that standard stepped hard jaws may not accommodate.
View our range of Bar Gripper Jaws or contact Dimac to confirm the correct jaws for your chuck and bar diameter.
Hard Gripper Jaws allow you to control the workpiece seating depth while retaining the durability and convenience of hardened jaws.
The seating depth can be adjusted in 5mmincrements, or a custom stop can be manufactured when a specific seating depth is required.




