Removing burrs from elongated corners and angled recesses requires an abrasive that can reach into the feature without sacrificing useful cutting contact. The United Abrasives 38306 Tapered Cartridge Roll features a 3/8" base diameter, 1-1/2" length, and 60-grit premium aluminum oxide abrasive for deburring, flash removal, and coarse-to-intermediate sanding. Its full-taper profile narrows toward the tip, allowing more focused abrasive contact in internal fillets, tapered openings, recessed corners, and irregular metal contours. The 60-grit construction is particularly useful for removing machining marks and preparing metal surfaces before finer finishing operations.
The United Abrasives 38306 uses a multi-layer, self-dressing construction, which exposes fresh cutting abrasive as successive layers wear away to help maintain sanding effectiveness. Compared with the shorter 38300 model, its 1-1/2" abrasive length provides additional contact along deeper contours where sufficient clearance is available. The 1/8" arbor opening corresponds to the manufacturer-listed 95104 cartridge roll mandrel for appropriately matched mounting. With a maximum operating speed of 26,000 RPM, the roll must be used with compatible, securely mounted rotary equipment. Suitable materials include ferrous metals, non-ferrous metals, stainless steel, and high-tensile steel. Part number 38306 is supplied in a box of 100 for recurring metalworking applications.
Type: Tapered Cartridge Roll | Part Number: 38306 | Abrasive Material: Premium Aluminum Oxide | Base Diameter: 3/8" | Length: 1-1/2" | Arbor: 1/8" | Grit: 60 | Max RPM: 26,000 | Recommended Mandrel: 95104 | Quantity: 100 per Box | Material Application: Ferrous Metals, Non-Ferrous Metals, Stainless Steel, High-Tensile Steel
Features:
- Premium aluminum oxide abrasive grain supports deburring, sanding, and blending on ferrous and non-ferrous metals.
- 60-grit abrasive provides cutting action for removing machining burrs, localized flash, and rough surface marks.
- Full-taper shape narrows toward the tip to improve access to internal corners, angled channels, and irregularly shaped recesses.
- 3/8" base diameter offers a relatively compact abrasive profile for localized work on smaller metal features.
- 1-1/2" length provides additional abrasive contact along deeper recessed contours compared with shorter tapered rolls.
- Multi-layer, self-dressing construction exposes sharp, new abrasive grain as each layer wears away.
- 1/8" arbor opening corresponds to the manufacturer-specified 95104 mandrel for suitable mounting.
- Quick removal and installation facilitate abrasive replacement, while the box quantity of 100 supports regular shop replenishment.
Applications:
- Precision machining - Removing burrs and blending cutter marks in angled openings, elongated internal fillets, and recessed machined features.
- Tool and die manufacturing - Sanding accessible cavity corners, tapered tooling contours, and recessed features requiring a narrowing abrasive profile.
- Metal fabrication - Cleaning up localized cutting flash and preparing irregular metal edges for subsequent finishing.
- Stainless steel and alloy steel processing - Performing initial deburring and surface preparation on contoured stainless steel and high-tensile steel components.
- Industrial maintenance and repair - Smoothing rough areas inside accessible metal fittings, machinery recesses, and contoured repair features.
FAQs:
- Q: What is the difference between United Abrasives 38306 and 38300?
A: Both tapered cartridge rolls have a 3/8" base diameter, 60-grit abrasive, 1/8" arbor opening, and 26,000 RPM maximum operating speed. The 38306 measures 1-1/2" long and uses mandrel 95104, while the 38300 measures 1" long and lists mandrel 95105. The longer model offers additional working contact in accessible recessed features. - Q: How does the 38306 compare with the 38307?
A: Both models share the same base diameter, length, arbor opening, and maximum speed. The 38306 uses 60-grit abrasive for more aggressive deburring, while the 38307 uses finer 80-grit abrasive for intermediate sanding and surface blending. - Q: What advantage does a tapered cartridge roll provide? A: Its narrowing profile helps reach angled corners, internal fillets, and contoured recesses. Straight cartridge rolls provide a uniform cylindrical abrasive surface and may be preferable for sanding parallel side walls or straight channels.
- Q: Is United Abrasives 38306 appropriate for final polishing?
A: The 60-grit abrasive is intended primarily for deburring and initial surface preparation. Finer abrasive grades may be needed to achieve a smoother final finish. - Q: Can this tapered cartridge roll be used on stainless steel?
A: Yes. United Abrasives identifies stainless steel and high-tensile steel as suitable materials. Use abrasives dedicated to stainless steel where preventing cross-contamination from carbon steel is important. - Q: Which mandrel and operating speed apply to SKU 38306?
A: The manufacturer's catalog specifies mandrel part number 95104 for its 1/8" arbor opening and 1-1/2" length. The cartridge roll has a maximum operating speed of 26,000 RPM. Verify secure mounting, shank compatibility, and appropriate speed ratings before operation.
Available Variations and Specifications
| SKU (Qty 100) |
Base Dia | Length | Arbor | Grit | Max RPM | Mandrel Part # |
|---|---|---|---|---|---|---|
| 38300 | 3/8" | 1" | 1/8" | 60 | 26,000 | 95105 |
| 38301 | 3/8" | 1" | 1/8" | 80 | 26,000 | 95105 |
| 38302 | 3/8" | 1" | 1/8" | 120 | 26,000 | 95105 |
| 38306 | 3/8" | 1-1/2" | 1/8" | 60 | 26,000 | 95104 |
| 38307 | 3/8" | 1-1/2" | 1/8" | 80 | 26,000 | 95104 |
| 38308 | 3/8" | 1-1/2" | 1/8" | 120 | 26,000 | 95104 |
| 38312 | 1/2" | 1" | 1/8" | 60 | 26,000 | 95105 |
| 38313 | 1/2" | 1" | 1/8" | 80 | 26,000 | 95105 |
| 38314 | 1/2" | 1" | 1/8" | 120 | 26,000 | 95105 |
| 38318 | 1/2" | 1-1/2" | 1/8" | 50 | 26,000 | 95104 |
| 38319 | 1/2" | 1-1/2" | 1/8" | 60 | 26,000 | 95104 |
| 38320 | 1/2" | 1-1/2" | 1/8" | 80 | 26,000 | 95104 |
| 38322 | 1/2" | 1-1/2" | 1/8" | 120 | 26,000 | 95104 |
| 38326 | 1/2" | 2" | 1/8" | 60 | 26,000 | 95103 |
| 38327 | 1/2" | 2" | 1/8" | 80 | 26,000 | 95103 |
| 38328 | 1/2" | 2" | 1/8" | 120 | 26,000 | 95103 |
| 38332 | 5/8" | 2" | 1/8" | 60 | 18,000 | 95103 |
| 38333 | 5/8" | 2" | 1/8" | 80 | 18,000 | 95103 |
| 38338 | 3/4" | 1-1/2" | 1/8" | 60 | 18,000 | 95104 |
| 38339 | 3/4" | 1-1/2" | 1/8" | 80 | 18,000 | 95104 |
| 38340 | 3/4" | 1-1/2" | 1/8" | 120 | 18,000 | 95104 |
| 38344 | 3/4" | 2" | 3/16" | 60 | 18,000 | 95106 |
| 38345 | 3/4" | 2" | 3/16" | 80 | 18,000 | 95106 |
| 38346 | 3/4" | 2" | 3/16" | 120 | 18,000 | 95106 |
Looking for more information about United Abrasives Tapered Cartridge Roll? For help choosing the correct United Abrasives Tapered Cartridge Rolls for your application, please call (800) 608-5210 or email info@intlairtool.com
- Type
- Tapered Cartridge Roll
- Diameter (in.)
- 3/8
- Length (in.)
- 1-1/2
- Arbor Hole (in.)
- 1/8
- Grit
- 60
- RPM
- 26000
- Mandrel Part
- 95104
- Box of
- 100
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