Product Specification
SA-51NF CYLINDER ALUMA CUT SHAPE CARBIDE BURR – 1/8" SHANK
The Benchmark Abrasives SA-51NF cylinder shape premium tungsten carbide burr is built for fabricators, machinists, metalworkers, and detail-oriented users who need controlled cutting performance on aluminum and other soft nonferrous materials in tighter spaces. Unlike lower quality burrs that may use hollow heads or inconsistent brazing, Benchmark carbide burrs feature a solid carbide head with a silver-brazed connection to the shank. The result is a strong, stable cutting tool designed for precise deburring, shaping, contouring, and localized material removal.
The SA-51NF combines that premium construction with a straight-sided 1/4" cylinder head and Aluma Cut tooth geometry. Its wider, more open tooth spacing provides improved chip clearance on aluminum and other soft nonferrous materials, helping reduce chip packing while maintaining an efficient cutting action. The cylinder profile is especially useful along sidewalls, straight edges, interior contours, and other areas where maintaining a consistent cutting profile matters.
Its compact 1/8" shank makes the SA-51NF well suited for compatible rotary tools and precision grinders equipped with the correct 1/8" collet or chuck. The standard-length 1/4" head is rated for a maximum speed of 70,000 RPM, giving users a small-format carbide burr with professional-grade construction and versatile cutting geometry.
Product Specifications
| Specification |
Details |
| Product Code |
SA-51NF |
| Burr Material |
Tungsten Carbide |
| Head Shape |
Cylinder |
| End Style |
Plain End |
| Cut |
Aluma Cut |
| Head Diameter |
1/4" |
| Cut Length |
1/2" |
| Shank Diameter |
1/8" |
| Overall Length |
2" |
| Max RPM |
70,000 RPM |
| Quantity |
1 Piece |
Features
- Premium tungsten carbide construction
- Aluma Cut tooth geometry for improved chip clearance
- Open tooth spacing suited for aluminum and soft nonferrous materials
- Straight-sided cylinder profile for controlled wall and edge work
- Compact 1/4" head for detailed shaping and deburring
- 1/2" cutting length for useful surface engagement
- 1/8" shank for compatible rotary tools and precision grinders
- Suitable for deburring, contouring, shaping, and localized stock removal
- Sold individually
Applications
The SA-51NF cylinder profile is well suited for:
- Sidewall contouring
- Straight-edge shaping
- Interior contour work
- Deburring aluminum components
- Cleaning fabricated edges
- Localized stock removal
- Detailed nonferrous shaping
- General fabrication, maintenance, and precision work
Materials
The Aluma Cut tooth pattern is intended primarily for:
- Aluminum
- Other soft nonferrous materials
Its wider, more open tooth spacing is designed to provide better chip clearance on softer materials where closely spaced cutting teeth can be more prone to loading.
Machine Compatibility
Designed for rotary tools, precision grinders, and other compatible machines equipped with a properly sized 1/8" collet or chuck.
Compatible examples include Dremel® 4300, 4000, and 3000 fitted with a Dremel 480 1/8" collet and matching collet nut. The 4300 can also hold the 1/8" shank in its keyless chuck.
Always confirm the 1/8" shank is securely seated in the correct collet or chuck before operation. A 1/8" shank is not interchangeable with 3 mm tooling.
Cutting Performance
The SA-51NF cylinder shape provides a straight, consistent cutting profile that works especially well for sidewalls, straight edges, interior contours, and other features where maintaining a uniform surface is important. Its smaller 1/4" head gives the operator greater access and control in tighter areas than larger 1/4" shank burrs.
The Aluma Cut tooth pattern uses wider, more open spacing than a double-cut pattern, providing additional room for chips to clear during cutting. This geometry is specifically useful on aluminum and other soft nonferrous materials where chip evacuation helps maintain a more consistent cutting action.
Carbide burrs are primarily cutting and shaping tools; applications requiring a refined cosmetic finish should be followed with the appropriate abrasive finishing process.
Use the chart above to select the recommended operating-speed range based on the 1/4" burr head diameter and workpiece material.
Do not exceed the 70,000 RPM maximum speed for this standard-length 1/4" carbide burr. Always operate within the lower maximum speed of the burr, machine, collet, chuck, or accessory system.
Safety Tips
-
- Secure the workpiece before beginning operation.
- Confirm the 1/8" shank is properly seated and securely tightened in the correct collet or chuck.
- Use light, controlled pressure and allow the carbide cutting edges to remove the material.
- Keep the burr moving during cutting rather than holding it stationary against the workpiece.
- Avoid excessive force, which can increase heat, vibration, and premature cutting-edge wear.
- Select operating speed according to burr diameter, workpiece material, machine requirements, and the recommended operating-speed chart.
- Never exceed 70,000 RPM.
- Stop immediately if excessive vibration, chatter, unusual noise, or visible damage occurs.
- Do not use a damaged, chipped, bent, or improperly mounted carbide burr.
