For smoothing residual machining marks, refining angled metal recesses, and finishing internal contours after initial deburring, the United Abrasives 38322 Tapered Cartridge Roll provides fine abrasive cutting action in an elongated, pointed configuration. Featuring a 1/2" base diameter, 1-1/2" length, and 120-grit premium aluminum oxide abrasive, this roll is designed for light deburring, scratch refinement, and localized surface blending. Its full-taper profile narrows toward the tip, allowing operators to sand internal fillets, angled channels, recessed corners, and irregular metal contours where a straight cylindrical roll may not provide suitable contact. The fine abrasive grain helps reduce marks left by coarser sanding operations, making the 38322 particularly useful when surface refinement takes priority over aggressive material removal.
The United Abrasives 38322 incorporates a multi-layer, self-dressing construction, meaning fresh cutting abrasive is exposed as successive layers wear away to help maintain effective sanding action. Its 1/8" arbor opening corresponds to the manufacturer-listed 95104 cartridge roll mandrel for appropriately matched mounting. The 26,000 RPM maximum operating speed establishes the abrasive's upper speed limit and must be considered when selecting a compatible die grinder and mounting accessory. Compared with the shorter 38314 model, its 1-1/2" abrasive length provides additional working contact along extended angled recesses where sufficient clearance is available. United Abrasives identifies ferrous metals, non-ferrous metals, stainless steel, and high-tensile steel as suitable workpiece materials. The 38322 is supplied in a box of 100 for recurring metal finishing operations.
Type: Tapered Cartridge Roll | Part Number: 38322 | Abrasive Material: Premium Aluminum Oxide | Base Diameter: 1/2" | Length: 1-1/2" | Arbor: 1/8" | Grit: 120 | 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 fine sanding, light deburring, and surface blending on ferrous and non-ferrous metal components.
- 120-grit abrasive helps smooth minor machining marks and reduce scratches remaining after coarse or intermediate sanding.
- Full-taper construction narrows toward the tip to provide access to angled recesses, internal corners, fillets, and contoured metal features.
- 1/2" base diameter offers useful abrasive contact near the wider end of the roll while allowing more focused sanding toward its tip.
- 1-1/2" length provides additional contact along elongated recessed contours compared with shorter tapered cartridge rolls.
- Multi-layer, self-dressing construction exposes sharp, fresh abrasive grain as successive layers wear away.
- 1/8" arbor opening corresponds to the manufacturer-listed 95104 cartridge roll mandrel for appropriately matched mounting.
- Quick removal and installation facilitate abrasive changes, while boxes of 100 support regular inventory replenishment.
Applications:
- Precision machining and CNC finishing - Refining minor tool marks and smoothing angled openings, recessed pockets, and internal fillets after initial deburring.
- Tool and die manufacturing - Finishing accessible tooling cavities, tapered features, and elongated internal contours requiring localized abrasive contact.
- Metal fabrication - Reducing residual sanding scratches and blending surface imperfections around irregularly shaped metal openings.
- Stainless steel and alloy steel finishing - Performing fine abrasive sanding on recessed stainless steel and high-tensile steel components.
- Industrial equipment maintenance - Refining accessible recessed fittings, internal corners, and contoured metal repair surfaces.
FAQs:
- Q: What is the difference between United Abrasives 38322 and 38320?
A: Both tapered cartridge rolls have a 1/2" base diameter, 1-1/2" length, 1/8" arbor opening, and 26,000 RPM maximum operating speed. The 38322 uses finer 120-grit abrasive for surface refinement, while the 38320 uses 80-grit abrasive for intermediate sanding and greater material removal. - Q: How does the 38322 compare with the shorter 38314?
A: Both models feature a 1/2" base diameter, 120-grit aluminum oxide abrasive, and 1/8" arbor opening. The 38322 measures 1-1/2" long and lists mandrel 95104, while the 38314 measures 1" long and lists mandrel 95105. The longer roll provides additional abrasive contact along accessible recessed contours. - Q: Is the United Abrasives 38322 suitable for heavy burr removal?
A: Its 120-grit abrasive is better suited to light deburring, refining machining marks, and smoothing previously prepared surfaces. For pronounced burrs or rough surface material, a coarser option such as the 60-grit 38319 may be more appropriate for the initial sanding stage. - Q: Why choose a tapered cartridge roll instead of a straight cartridge roll?
A: A tapered roll narrows toward its tip, making it useful for angled recesses, internal fillets, and irregular contours. Straight cartridge rolls maintain a uniform cylindrical abrasive surface and may be preferable for sanding parallel side walls or straight grooves. - Q: Can the 38322 be used on stainless steel?
A: Yes. United Abrasives lists stainless steel and high-tensile steel among the suitable materials, along with ferrous and non-ferrous metals. Use abrasives dedicated to stainless steel when preventing cross-contamination from previous carbon steel work is important. - Q: Which mandrel is recommended for SKU 38322, and how is the product packaged?
A: The United Abrasives 2025-2026 catalog identifies mandrel part number 95104 for this 1/8" arbor cartridge roll. The 38322 has a maximum operating speed of 26,000 RPM and is sold in a box of 100. Confirm proper mounting engagement, shank compatibility, and package contents before ordering.
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.)
- 1/2
- Length (in.)
- 1-1/2
- Arbor Hole (in.)
- 1/8
- Grit
- 120
- RPM
- 26000
- Mandrel Part
- 95104
- Box of
- 100
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