FS Tool Toolholder Extensions — Standard ER Nut
Design
- Precision ground surfaces
- Collet design allows for fast, easy tool changes of different shank diameters
- Optimal concentricty, collet life, and proper clamping of tool shanks requires tightening to the specified torque setting
- Tightens using standard collet nut wrench
Application
- Enables greater reach of the cutting tool
- Using an extension with smaller collet nut allows access to confined cuts
- Reduced tool projection achieves superior cutting performance and tool life
| Part No. | RCEXT04837 |
|---|---|
| Series | |
| Description | 42 Dia. × 1" Shank × 101 mm L |
| Collet Type | ER25 |
| Clamping Range Ød | 2-16 mm |
| Shank Diam. D3 | 1" |
| Nut Diam. D2 | 42 |
| Overall Length L1 | 101 mm |
| Shank Length L2 | 50 mm |
| Torque Setting | 77 ft-lbs |
| Made in | USA (Alma, Michigan) |
| Part No. | Collet Type | Clamping Range Ød | Shank Diam. D3 | Nut Diam. D2 | Price |
|---|---|---|---|---|---|
| RCEXT04837 | ER25 | 2-16 mm | 1" | 42 | $226.60 Add to cart |
| WR04615 | ER25 | 2-16 mm | 1" | 42 | $34.15 Add to cart |
| RCEXT04839 | ER32 | 2-20 mm | 1" | 50 | $293.35 Add to cart |
| RCEXT04839-140 | ER32 | 2-20 mm | 1" | 50 | $386.65 Add to cart |
| RCEXT04817 | ER32 | 2-20 mm | 20mm | 50 | $291.80 Add to cart |
| RCEXT04818 | ER32 | 2-20 mm | 20mm | 50 | $309.65 Add to cart |
| RCEXT04818-150 | ER32 | 2-20 mm | 20mm | 50 | $339.25 Add to cart |
| WR04616 | ER32 | 2-20 mm | 20mm | 50 | $41.50 Add to cart |
| RCEXT04841 | ER40 | 3-26 mm | 1" | 63 | $260.75 Add to cart |
| WR04617 | ER40 | 3-26 mm | 1" | 63 | $48.95 Add to cart |
Brand
FS Tool
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Need This Tool Customized?
Every machining application is different. If this tool is close to what you need but not an exact fit, General Cutting Tools can help modify it for your specific job, machine, material, or production requirement.
We work with CNC shops, industrial manufacturers, tool rooms, and production facilities to provide tool modifications that improve fit, function, performance, and efficiency. Whether you need a small adjustment or a more specialized cutting tool solution, our team can review your requirements and recommend the best option.
Custom tool modifications can help reduce setup time, improve accuracy, extend tool life, solve clearance issues, and support more consistent production results.
Common Tool Customization Options
Diameter and OD Modifications
We can modify tool diameters to better match your application requirements, including cutting diameter changes, OD modifications, pilot diameter adjustments, step diameters, and shank diameter modifications.
Bore Modifications for Saw Blades
Custom saw blade bore modifications are available for hole diameter changes, pinholes, mounting holes, and keyway cutouts to help match your machine setup and cutting requirements.
Length Adjustments
Tools can be modified for specific reach, clearance, or setup needs. This may include overall length changes, flute length adjustments, reduced neck sections, extended reach designs, or shortened tools for improved rigidity.
Shank Modifications
Shank modifications can help ensure the tool fits properly in your holder, spindle, or machine setup. Common options include shank diameter changes, flats, Weldon flats, reduced shanks, and custom holding requirements.
Radius, Chamfer, and Corner Changes
We can customize corner radius, chamfer angles, edge breaks, and other profile details to meet part print requirements or improve cutting performance.
Step Tool Modifications
For applications that require multiple diameters or operations in a single tool, we can create or modify step tools to help reduce tool changes and improve production efficiency.
Flute and Cutting Edge Adjustments
Depending on the tool and application, flute length, cutting edge geometry, end cutting features, relief angles, and cutting edge shape may be modified to improve chip evacuation, cutting action, and tool performance.
Regrinding and Resharpening
Many cutting tools can be reground or resharpened to restore performance, extend tool life, and reduce replacement costs.
Custom Profiles and Special Forms
For unique part features, we can help provide special forms, custom profiles, custom radii, counterbores, countersinks, keyseat cutters, form tools, and other application-specific tooling solutions.
Material-Specific Tool Adjustments
We can help modify or recommend tooling based on the material being machined, including aluminum, brass, bronze, plastics, stainless steel, hardened steel, cast iron, composites, and other industrial materials.
Have a Drawing, Sample, or Part Print?
Send us your print, sketch, CAD file, photo, tool number, sample, or application details. For the fastest quote, include the material being cut, quantity needed, required dimensions, tolerances, and any machine or holder requirements.
Coating Options
Tool coatings can be selected or added to improve wear resistance, heat resistance, lubricity, and performance in specific materials such as steel, stainless steel, aluminum, cast iron, and high-temperature alloys.
Request a Custom Tool Modification
Need this tool changed for your application? Contact General Cutting Tools today to discuss your custom tooling needs. We can help you find the right solution for your machine, material, and production goals.
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