YAMASA DX Roller Burnishing Tools are designed for burnishing through holes and blind holes. In addition to improving surface finish, the tools also provide increased surface hardness and enhanced dimensional accuracy.

• Cutting speed (Vc): up to 250 m/min
• Adjustment range varies between 0.15 mm and 1.00 mm depending on diameter and tool version.
• The advanced adjustment mechanism allows precise diameter adjustment in increments of 0.002 mm.
• With a single adjustment setting, bores with tolerances up to H8–H9 can be burnished.
• Suitable for burnishing all metallic materials with tensile strength up to 1400 N/mm² and hardness up to 42–45 HRC in a single pass.
• Easy to install and operate.
• Long service life.
• Low spare parts consumption.
• Fully repairable design.
• Complete spare parts availability.
• Pre-machining and burnishing operations can be performed on the same machine or on separate machines. Following pre-machining, the burnishing operation is completed in a single pass.
• Thanks to their high processing capacity and capability to operate at high feed rates, DX Roller Burnishing Tools reduce cycle times in mass production applications.

Machine Compatibility

DX Roller Burnishing Tools are compatible with CNC lathes, milling machines, drilling machines and conventional machine tools. Thanks to their cylindrical shank and Morse taper shank connection options, they can be easily adapted to different machine types.

Tool Versions

YAMASA DX Roller Burnishing Tools are available in three versions depending on the application method.

Version 1: Through Hole Self-Feed (SF)

• Designed for burnishing through holes.
• Suitable for conventional lathes, drilling machines and milling machines.
• The tool generates its own feed independently of the machine. Feed rate increases proportionally with spindle speed.

Version 2: Through Hole Machine Feed (MFT)

• Designed for burnishing through holes.
• Suitable for all types of metal cutting machines.
• Feed rate: 0.05 – 0.30 mm/rev per roller

Version 3: Blind Hole Machine Feed (MFB)

• Designed for burnishing blind holes to the bottom.
• Can also be used for through holes and semi-blind holes.
• Suitable for all types of metal cutting machines.
• Feed rate: 0.05 – 0.30 mm/rev per roller

Tool Construction

• The tools consist of a precision adjustment body and a burnishing head.
• The burnishing head consists of a cage, tapered mandrel and rollers. These components are also replaceable wear parts.
• Different diameter burnishing heads can be mounted on the same tool body.
• For machine connection, both cylindrical shank and Morse taper shank options are available (see table).