A proven method for accurately sizing and micro-finishing of bores.

Multi-roll burnishing tools for accurate sizing, low micro-finishing, and surface hardening of ID holes.

Proven technology with decades of refinement. Common sizes available in stock, including all wear parts.

ID Multi-Roll Burnishing Advantages

Low microinch finish

  • Produces a 4 to 8 Ra surface finish in one pass.
  • Improves surface irregularities and tool marks.

Process improvements

  • Burnishing is a repeatable and consistent process
  • Fast cycle times – measured in seconds, not minutes!

Accurate sizing

  • ID burnishing tools produce accurate sizing in .0001″ increments.
  • Roller burnishing results in 25% size improvement in steel and up to a 50% improvement in high ductility materials.

Low cost

  • Eliminates secondary machines and set ups.
  • Eliminates secondary processes such as grinding, honing and polishing.
  • Elliott burnishing tools feature long lasting and replaceable wear parts, reducing total cost over the life of the tool.

Work hardening

  • Burnishing increases the surface hardness through the cold working process and compressive forces.
  • Increases metal’s resistance to fatigue and failure at stress points.
  • Produces a dense and uniform surface.

Versatility

  • Burnishing is effective for many different part configurations.
  • Suitable process for a variety of metals – all ductile metals can be burnished!
  • Multi-roll burnishing tools are adjustable to cover a size range.

Proven quality

  • The burnishing process has been refined and improved  for over 100 years and has a proven record of success.
  • Monaghan Tooling Group and Elliott Tool Technologies continue this long tradition by providing the industry’s highest quality burnishing tools.

Easy-to-use

  • MTG and Elliott burnishing tools require limited training to operate.
  • Easy to maintain and repair.
  • Common repair parts are always stocked!

Standard Dimensions

Special tools with burnishing lengths longer than shown are available and will be quoted upon request.

Special deep hole tools with bodies smaller than the cages are available from .375” to 1.187”.

Through holes and blind holes

Tools with relieved rolls are used for through holes (Roll Style 1).

These tools are self-feeding and a release clearance is required. The through rolls cannot burnish as close to the bottom of the hole as blind end rolls (Roll Style 4). These rolls are interchangeable within the standard cages.

Full bottoming rolls

Used in blind hole applications to minimize the release clearance (Roll Style 8).

Technical Reference and Downloads

Need a little more information about ID multi-roll burnishing tools? Detailed product PDFs are available below.

View the ID Multi-Roll Burnishing tool in action: