The Basics of Spindle Liners
Tuesday, March 18, 2014

Spindle Liners: The Basics
Sometimes running a machine or manufacturing shop, it can seem like you need a Ph.D. in metallurgy to make the proper business decisions. It can feel like you’re drowning in a sea of jargon and acronyms. Here’s a very basic guide to one of our main products, the spindle liner, to help you better decide what products will make your shop run at maximum efficiency.

What is a Spindle Liner?
A Spindle Liner (also referred to as filler tubes, reduction tubes, master liners or sleeves) is designed to match the interior diameter of a CNC Lathe Spindle to the Outer Diameter of a bar. It makes a big hole smaller, and helps to keep the barstock on center, allowing faster machining speeds and closer machine tolerances. It also reduces wear and tear on machines, as well as reducing noise pollution inside your shop.

Our spindle liners can easily be made to increase length capacity of the lathe, meaning jobs can be run much more efficiently.

What Are The Benefits
At high speeds, unsupported bars have a tendency to wobble and cause vibration. This makes lines, scratches, and ribs in the finished parts. Also, the increased precision and stability make for less waste, essential in these tight economic times. One metal shop calculated a loss of $34,000 in metal chips alone, due to imperfect cuts! In addition to this, the longer spindle liners allow longer bars, which means fewer cuts and fewer remnants. When you factor in the wear on the machines, the decrease in noise, and the ability to lengthen spindles, spindle liners are a simple and essential way to heighten the productivity of your shop, giving you the edge over your competition.

Contact us today or fill out our Easy Quote Form, to find out if we carry liners for your CNC lathe, or what J.F. Berns can do to heighten your productivity.


Blog Categories

  • General Interest
    • 03/19/2019 - What is the CNC Machining Proc
    • 02/19/2019 - Lining Your Spindles for Bette
    • 01/22/2019 - Selecting the Right Bar Feeder
    • 12/18/2018 - Benefits of CNC manufacturing
    • 11/20/2018 - Lathe Machine Accessories and
    • 10/23/2018 - What is Chamfering and How Doe
    • 09/18/2018 - Why Gears Need to be Chamfered
    • 08/21/2018 - How to Assess What Bar Feeder
    • 07/24/2018 - Increase Your CNC Machining Pr
    • 06/19/2018 - Machines You Would Need for Me
    • 05/22/2018 - Quality Parts: 5 Benefits to y
    • 04/17/2018 - 3 Type of Metal Fabrication To
    • 03/16/2018 - Learning about Lathing Machine
    • 02/16/2018 - Why CNC Machining is Important
    • 01/26/2018 - Step By Step Guide For Easy Sp
    • 08/15/2017 - Fully Automatic Chamfering Mac
    • 07/05/2017 - Chamfering: Manual vs. Automat
    • 05/23/2017 - The Mother of Machine Tools –
    • 04/17/2017 - The Mother of Machine Tools –
    • 12/17/2016 - DIY Spindle Liners
    • 11/05/2016 - Spindle Liners: Steel or Ureth
    • 07/23/2016 - Quick-Change Workholding Syste
    • 06/23/2016 - The Best Spindle Liners
    • 05/12/2016 - Apps for CNC Machining
    • 03/15/2016 - T-Rex Spindle Crushes Industry
    • 10/13/2015 - From Hand Tool to Simple Machi
    • 05/11/2015 - Bevel and Chamfer: What’s the
    • 04/24/2015 - What’s In A Name: The Definiti
    • 03/17/2015 - A Brief History of Geometric L
    • 02/10/2015 - 3-D: Not Just for Printers Any
    • 01/20/2015 - Ornamental Turning
    • 12/09/2014 - Informative Machinist Blogs
    • 11/20/2014 - The Ins and Outs of Being a Ma
    • 10/23/2014 - Bow Lathes Before Power
    • 09/10/2014 - World Record: The World’s Larg
    • 08/18/2014 - Lathes: Not Just for Heavy Ind
    • 07/17/2014 - More Useful Apps for Machinist
    • 06/12/2014 - A Brief History of the Lathe
    • 05/25/2014 - The History of Lathing: Ancien
    • 04/02/2014 - Useful Apps for Machinists and
    • 03/18/2014 - The Basics of Spindle Liners
  • Historical Turning

Tag Cloud


The Chamfer Machine is working like a Champ! We would like to order another one for our Connecticut location.

Jim Doolittle Jr. - Accro Met Inc. / North Carolina



that all the information does not have to be filled in to get a quote. However, the more complete the form is, the better we can service your request and process your order from this quote.
Spindle Liners
Lathe Accessories
Chamfering Machines
Bar Supports
Special Machines
39th Anniversary


JF Berns Company, Inc.
11115 Ashburn Rd.
Cincinnati, OH 45240
Email Us »