Jones & lamson 36"X72" internal-external thread grinder

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Subject: Jones & lamson 36"X72" internal-external thread grinder
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JONES & LAMSON 36"x72" INTERNAL-EXTERNAL THREAD GRINDER
Model No 36 x 72 , Serial No. 150000, New 1957
Jones & Lamson Internal-External Gage Quality Thread Grinder
One of a kind machine specially built for U.S. Government.
Designed and built to grind with the accuracy necessary for final inspection
ring and plug gages. This machine is in like new condition, with less than
100 hours actual use. At the time of construction, this machine far exceeded
any thread grinder ever built in size and accuracy; as far as we know, it still does.
Pitches: Virtually any pitch, English or Metric can be ground by using
Helix Angles, Internal: 15 Degrees
Helix Angles, External: 10 Degrees
Work Speed: 5 - 20 RPM, Infinetely Variable
Taper Grinding: Internal & External Taper
Single and Multiple Start Threads
Internal and External Relieving Capability
Pantograph Type Form Wheel Dresses - Internal & External Spindles
Separate Internal and External Slide Away Grinding
Auto Wheel Dressing Compensator
Long and Short Internal Spindles
Delpark - Olson Magnetic Coolant Filter
Complete Blue Prints and Operations Manual
7 1/2 HP DC External Spindle Motor
3 HP DC Internal Spindle Motor
Machine Proper Weight, Approx.: 50,000 lbs
All Items Subject to Prior Sale
Be Sure to Verify Specs & Condition Prior to Purchasing
CONTACT US: We are available to answer your calls and inquires, Monday thru Friday, 8am - 5pm, at , or you can email us at
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