3.1″ 3-Jaw Chuck – Electroless Teflon Nickel Coated

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Product Description

1040C Electroless Nickel-Teflon Coated Chuck

This chuck is identical to #1040 except for an electroless Nickel-Teflon coating that has been applied to help prevent wear and corrosion. This special coating has been applied to all external and internal surfaces of the chuck (except for chuck jaws), significantly improving the life of the chuck. This chuck also opens and closes more smoothly due to the lubrication properties of Nickel-Teflon.

  • Ductile plating with columnar structure
  • Harder than any other nickel-based coating
  • Coating uniformity that eliminates post-plate grinding (or burnishing)
  • Wear properties overall superior to hard chromium
  • Hardness (68-72 Rc)
  • Low coefficient of friction (.044) Teflon™ is .04
  • Uniform coating thickness up to .004”
  • Accepts dry film lubricants

Jaw Options

  • For those who have jobs where speed and ease of use are more important than maximum accuracy and want a chuck that is loose right from the start (No extra charge).
    Add the note “loose jaws” to the comments box above
  • Soft (not hardened or machined) steel jaws are also available when you build your own chuck.

 

How to Distinguish between Standard Chucks and Coated Chucks

Some of our customers have been wondering how to tell the difference between our standard chucks and those that have the electroless Nickel-Teflon coating. Standard chucks have darker markings than the coated chucks (See Figure 1. Click on photo to view a larger image).

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Figure 1—Examples: (Left) 1040 3-Jaw Chuck (3.1″), (Right) 1040C Electroless Nickel-Teflon Coated 3-Jaw Chuck (3.1″).

Here, at Sherline Products, each of our chucks is laser engraved with a company mark, chuck size, and jaw location. During the laser marking process the laser removes a bit of the surface and darkens the material below (Figure 1, left). When chucks are sent out to receive the Nickel-Teflon finish the coating process changes the dark engraved markings to a noticeably lighter finish (Figure 1, right).

There is also a subtle change in the color of the chuck, but in the absence of being able to compare them side by side, the most evident way to tell whether you have a coated chuck, or not, is to check the color of the laser markings.

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The improper use of machine tools and their accessories can result in serious injury. Before using this tool, thoroughly read the instructions and make sure you understand its proper and safe use.

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Always wear safety glasses when operating machine tools.

Download PDF 1040 Instructions

Instructions PDF Download

Chuck Diameter 3.1″
Jaw Capacity With jaws in normal position: 3/32″ (2mm) – 1-1/2″ (38mm)

With jaws in reverse position: 1/4″ (6 mm) – 3-1/4″ (82.5mm)

Through Hole Diameter .687″ (17mm)
Thread Size 3/4-16
Chuck Body Material 12L14 Steel
Chuck Jaws Material 12L14 Case Hardened Steel
Coating (#1040C only) Electroless Nickel-Teflon (#1040C only)
Part No. Description Quantity
10401C 3.1″ 3 Jaw Chuck Body Electroless Nickel-Teflon Coated 1
10402C 3.1″ Chuck Scroll Electroless Nickel-Teflon Coated 1
10413 Chuck Retainer Ring 1
10414 3 Jaw Chuck Jaw* 3
40580 Tommy Bar 2

*Because chuck jaws are factory ground to precisely match each chuck body you must send your chuck back to us to be fitted with new jaws. Please contact us for instructions on how to return your chuck.

Click the P/N below to download a zipped version of the IGS 3D CAD file. You will need to extract the zip file before viewing the IGS file.
1040 3.1″ 3-Jaw Chuck 3D IGS model
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