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Stronghold Chuck

The Stronghold Chuck is operated by a key. Key operation provides two major advantages:

  1. One handed operation
  2. Solid holding power

The following features are standard on our chucks:

  • quality materials
  • nickel plated body
  • hardened base jaws
  • manganese phosphate coated scroll

This chuck (as do all our chucks) include our patented over extension prevention system for added safety. This prevents the jaws from being over extended and therefore preventing them from coming loose from the chuck during operation.

The key is supported in two places for longer life and accuracy. Gear teeth are precision machined to guarantee that no teeth skip in use. When applying pressure, a 5 to 1 ratio assures powerful clamping.

The approximate weight of this chuck is 8 lbs.

The Capacities for this chuck (with the #2 Jaws) is as follows:



external chucking
internal chucking



If you are interest in the Optional Jaw Capacities, they are provided in the Capacity Chart.

Click here to view the Stronghold Chuck Instruction Manual in PDF Format.

Body Only Packages
Do you have extra jaw sets and are sick and tired of changing them?

Consider purchasing a bare bones "Body Only Package". Accessory jaws can be permanently mounted on these chucks, making changing top jaws a thing of the past.

Order Number

Package Includes
#2 Top Jaws, Taper-Lock Adaptor (packaged separately), Key, 1" RH Jumbo Screw, 4mm Hex Key

Body Only Package
Order Number

Package Includes
Taper-Lock Adaptor (packaged separately), Key,4mm Hex Key



When Ordering
Please specify the adaptor thread required for your spindle

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