Adjustable HSS Reamer GEKO G38267 38–44 mm, set of 15

The Adjustable HSS Reamer GEKO G38267 38–44 mm is a set of 15 precision finishing tools designed for controlled enlargement and sizing of existing holes in metalworking and fabrication. Manufactured from high-speed steel (HSS), these reamers provide wear resistance and consistent cutting performance for applications that require smooth bore surfaces and accurate diameters. The set covers the 38–44 mm diameter range through incremental adjustment, enabling fine tuning of hole size without changing tools.

Advantages

The HSS construction offers a balance of toughness and hardness that supports repeated use in machining environments. Adjustable blades allow incremental diameter changes to achieve accurate hole sizing and improve roundness. Supplied as a set of 15 pieces, the kit provides multiple interchangeable cutting elements to match required reaming steps and to replace worn parts. The reamers are compatible with standard reamer holders and can be used with drilling machines and lathes when secured properly.

Suitable for

• Finishing drilled or bored holes in steel and non-ferrous metals
• Precision hole enlargement and sizing in fabrication and maintenance
• Deburring internal edges and achieving smooth bore finishes
• Use with drilling machines or lathes equipped with appropriate holders

Key specifications

• Material: high-speed steel (HSS)
• Adjustable diameter range: 38–44 mm
• Set contents: 15 pieces (interchangeable cutting elements)
• Intended mounting: reamer holders for drilling machines and lathes
• Application: finishing and sizing of holes, deburring internal edges

How to use

Select the appropriate cutting elements from the set and assemble them into a compatible reamer holder or arbor. Secure the holder in the spindle of a drilling machine or in the tailstock/collet of a lathe, ensuring concentric alignment. Gradually adjust the reamer to the desired diameter within the 38–44 mm range, then feed the tool into the pre-drilled hole at recommended cutting speeds and with suitable cutting fluid. Perform light, controlled passes until the required tolerance and surface finish are achieved, and inspect the bore with measuring instruments.

Usage recommendations

Use appropriate cutting fluid for the workpiece material, maintain correct spindle speeds for HSS tooling, and avoid heavy cuts to prolong tool life. Inspect cutting edges regularly and replace worn elements from the set to maintain accuracy and surface quality.