Samchully JBM / JBH (Jaw Boring) Power Chucks

Thame Workholding

Price not listed

Samchully JBM / JBH Jaw Boring Open Center Hydraulic Chuck The world’s first power chuck with a built-in boring ring. No special equipment required to bore jaws. The JB Power Chuck eliminates the need for costly conventional boring rings and pre-machined slugs. A standard hex head Allen Wrench is the only tool required to bore jaws. The JB Chuck features a proprietary rotating sleeve aligned with the chuck’s master jaws allowing machinists to quickly and conveniently bore soft jaws without conventional boring rings or slugs. 100% compatible with Standard chucks (HS, MH Series) Application / Be

Thame Workholding's own words, read from their page.

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Where this comes from

The part other shops don't tell you. Three separate questions, kept separate on purpose, each with its source.

UK company
Registered at Companies House as THAME ENGINEERING CO LIMITED, number 02149520. Checked 2026-09-06.
Means the business is a British legal entity, not a British-sounding name owned elsewhere. It says nothing about where anything is made.
UK operations
Not yet checked.
Means people employed here, or premises they actually work from. We keep this separate from the company badge because a registered office can be an accountant's spare room, and a company can be registered in Britain while everything it does happens somewhere else. Where we have not looked, we say so rather than assuming.
British-owned
Not established. Many companies file a statement rather than naming a controlling shareholder.
Read from the register of people with significant control, following the chain of holding companies. It does not gate anything: a firm can be made here and owned elsewhere, and that is worth telling you rather than hiding.
Where it is made
The maker doesn't say, so neither do we.
This is about the individual product, not the company. A British firm can sell things made abroad, which is normal and not a criticism. We would rather tell you which is which than average them into a score.