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CME Tools

CME 8" 3-Jaw Self-Centering (Scroll) Lathe Chuck, Plain (Flat) Back, Two-Piece Reversible Jaws

  • Based on 92 reviews
Condition: New
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Availability: In Stock.
Fulfilled by CME Tools
Arrives Tuesday, Sep 16
Order within 14 minutes
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Size: 8" 3-Jaw


Features

  • Two-Piece Reversible Jaws; Jaws are composed of top and bottom pieces; American Standard Tongue and Groove Style; ISO3442
  • Highly durable; Steel inner mechanisms are quench hardened to increase toughness
  • Plain back; Requires a fitted backing plate to mount to your lathe's spindle; CME fully machined backing plates are available
  • 7 7/8" Body Diameter; 2 9/16" Through-Hole Diameter; 0.1575" to 3.3465" Clamping Range; 2.5591" to 7.874" External Clamping Range
  • 6.4961" Registration Diameter; 0.1969" Registration Depth; Rear mounting holes are positioned on a 7.0866" diameter circle

Brand: CME Tools


Material: Alloy Steel


Item Diameter: 7.88 Inches


Item Weight: 45 Pounds


Compatible Devices: Lathe


Thread Size: ‎M10


Capacity: ‎8 Inches


Handle Type: ‎keyed


Included Components: ‎Lathe Chuck Key, Mounting Bolt (3)


Lock Type: ‎Manual (Keyed)


Manufacturer: ‎CME Tools


Part Number: ‎0803F0


Item Weight: ‎45 pounds


Package Dimensions: ‎30 x 30 x 10 inches


Item model number: ‎8" 3-Jaw


Is Discontinued By Manufacturer: ‎No


Size: ‎8" 3-Jaw


Item Package Quantity: ‎1


Cutting Diameter: ‎7.88 Inches


Batteries Included?: ‎No


Batteries Required?: ‎No


Date First Available: January 26, 2023


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Sep 16

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Similar Products

Top Amazon Reviews

    • Cheap alternative to far more expensive 6-jaw chucks
Size: 6" 6-Jaw
It was a far better build than I expected. Like many others, I had to disassemble completely, remove a significant amount of grit and crud from the device, reoil, and assemble it. This will not be utilized on a lathe. I am mounting it to a pallet system for my CNC mill.
Reviewed in the United States on April 17, 2025 by Johnny
    • SAN OU / CME 6" 6-jaw plain back lathe chuck - much better than expected
Size: 6" 6-Jaw
I bought this chuck for working with thin-wall cylindrical workpieces hoping the runout would be better than what some reviewers had reported. I received the unit, completely disassembled, de-burred, re-lubricated and re-assembled it, about an hour or two well spent. I left about 0.001 allowance on the backing plate registration boss and indicated the chuck in before tightening the 3 mounting screws. Doing that eliminated about 0.0005 initial runout. In practice runout at 3/8” work diam. is less than 0.001, runout at 3/4” diam. is less than 0.0005 (!), and runout at 1.25” diam. is less than 0.0015. Of course, it depends to a degree on which pinion(s) you use to tighten and how you set the material in the jaws but if I’m willing to spend a couple minutes with an indicator I can get really good results. Overall I’m pleased with this chuck. SAN OU is a large Chinese drill and lathe chuck manufacturer. I have two other chucks made by this company and neither is as good as this one. Due to variability in sample quality I'm sure your mileage could vary from my results. ... show more
Reviewed in the United States on February 4, 2025 by Dogfather
    • Wow!!! Very pleasant surprise
Size: 6" 6-Jaw
I honestly was not expecting much out of this chuck. I figured it was just another knock off, inaccurate import, I was very wrong, very precise , works great. I don’t know how I got along without it.
Reviewed in the United States on December 31, 2022 by Amazon Customer
    • Looks great!!
Size: 6" 6-Jaw
Review Image by J. Brillinger J. Brillinger
Looks like top quality, so tired of my old junk I've been using. Need to fit my backing plate, will up date.
Reviewed in the United States on February 23, 2024 by J. Brillinger J. Brillinger
    • 12 thou total runout
Size: 6" 6-Jaw
I bought the 6" 6-jaw chuck and a backplate for my South Bend 10L. The backplate threads were a mess but I had a 2 1/4 x 8 tap and cleaned them up. The chuck was full of grinding grit as expected at this price and I took it apart and cleaned it. When mounted on the lathe the lathe body had about 3 thou runout - not great but OK. However I put various size ground bars in it, and all show 11-13 thou runout - so I'm returning it. Disappointed! ... show more
Reviewed in the United States on October 27, 2024 by W. Harbaugh
    • Big upgrade for me
Size: 6" 6-Jaw
Seems to be quality built,considering this chuck replaced a 60 year old 3 jaw chuck this is a huge upgrade for my old sears robuck lathe..lol
Reviewed in the United States on April 12, 2025 by Bruce Johnston Jr
    • Works perfect
Size: 8" 3-Jaw
Easy to use and install
Reviewed in the United States on February 17, 2022 by Thomas
    • Jaw broke
Size: 8" 3-Jaw
When the chuck was fairly new, i was tightening a fitting down and one of the 3 jaws broke, contacted the Co. about the bad casting. they did not help with the problem or replacement of the jaws
Reviewed in the United States on February 7, 2025 by Robert Badger

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