Precision-machined idler and tension rollers

Featured Product from Dover Flexo Electronics, Inc.

Precision-machined idler and tension rollers-Image

Data sheet

Aluminum Idler Rollers & Tension Rollers
Dover Flexo Electronics' precision-machined aluminum idler rollers and tension rollers are manufactured to the highest quality and can be used solo on your press or web machinery or with any stationary shaft, shaft-end tension transducers or UPB transducers including DFE’s Model C, or UPBH and SUPB type transducers.

If you’re planning to install shaft-end transducers at a new position in your machine’s web path, maybe you’d like to save time and trouble by ordering a dead-shaft idler roll for the installation at the same time.

DFE has been making and supplying reliable precision aluminum idler rolls and tension rollers for customers on an as requested basis for a long time. Now you can order aluminum dead-shaft idler rolls as standard items with short lead times.

These precision-machined rolls are manufactured to the highest quality and can be used solo on your press or web machinery or with any stationary shaft, shaft-end tension transducers or UPB transducers including DFE’s Model C, UPBH and SUPB type transducers.


  • 3", 4", 5", and 6" roll outside diameters
  • Fine roll finish, 32 or better
  • TGP steel shaft
  • Plain shaft ends
  • Balanced to G 2.5 at 500 RPM (or as specified)
  • Shielded bearings



  • D&T shaft ends, specify tap
  • Flats on shaft ends, with radial holes
  • Custom roll surface finishes and treatments


The idler rolls include shielded bearings and are available in roll diameters between three and six inches and roll face widths from six inches to 84 inches standard. The roll surface has a fine finish of v32 or better. Custom roll surface finishes are available. Shafts are TGP steel with plain ends. Milled flats or drilling and tapping are optional. The rolls are balanced to G2.5 at 500 RPM unless otherwise specified.

DFE has decided to formally offer idler rolls because of the company’s success and experience over the past two decades with its popular Tension Roll® transducer, a dead-shaft idler roll with tension sensors built into each end; and also because DFE has been providing idler rolls informally to customers who have requested them over the years. 

Watch>>>Dover Flexo Electronics - Leaders in Web Tension Control and Measurement Technology 

About DFE
DFE is the natural choice of process and maintenance engineers for upgrading existing machinery with modern, efficient tension control. OEMs and machinery builders choose DFE to incorporate the most reliable, cost-effective tension controls into their machine designs. Consistent quality, product reliability and superior technical support translate into low cost of ownership for all our customers.

Download our new Tension Equipment Product Guide

Request a FREE Evaluation of Your Tension Application

Are you measuring process tension on web or flexible substrate?
Need help selecting equipment for your application? 
Our products are used in unwind, rewind, and intermediate applications for any moving continuous material which undergoes an operation such as printing, coating, laminating, treating, metallizing, rewinding, unwinding, slitting, coating or other processes. Tension measurement and control systems for flexible packaging and paper, film and foil converting are our specialty.

We have over 84,000 tension transducers installed in manufacturing facilities everywhere. DFE transducers (sometimes referred to as 'load cells') are the industry standard for direct tension sensing and  measurement. We are a recognized leader in tension technology.

Get an overview of closed-loop web tension control

Sign-up to receive the latest Tension Zone e-news update (6x per year)

Download our new Tension Equipment Product Guide  

Web Tension Control & Tension Technology