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Machinery Photo Index
Manufactured/Badged by:
Jacobs Manufacturing Co.
West Hartford, CT; Clemson, SC

True Manufacturer:
Jacobs Manufacturing Co., West Hartford, CT; Clemson, SC
Machine Specifications
Machine Class: Metal Working Machinery
Machine Type: Other
Machine Size: 1/8 - 3/4"
Submitted By: Rory Brown
Machine Specifications
Description/Model: Jacobs Supreme Model 25T4
Date of Manufacturer:
Serial Number:
Last Updated 1/29/2026 11:55:37 PM

Comments:
This is the largest chuck that I have found. It had a J4 MT4 taper that didn't fit any of my machines. I removed the taper and replaced it with a J4 MT2. The MT2 is puny but when I installed it on my drill press, there was virtually no runout.

Photo 1:

Comments: 1 of 3 front view
Source: my I phone
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IMG Code

Photo 2:

Comments: 2 of 3 front view
Source: my I phone
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Photo 3:

Comments: 3 or 3 front view
Source: my I phone
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Photo 4:

Comments: On the press
Source: my I phone
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