When fine sanding is needed along extended grooves, internal walls, and recessed metal surfaces, the United Abrasives 38076 Straight Cartridge Roll provides a compact abrasive for detailed surface refinement. Featuring a 1/2" diameter, 1-1/2" length, and 120-grit premium aluminum oxide abrasive, this cartridge roll helps smooth light machining marks, remove residual burrs, and blend surfaces previously prepared with coarser abrasives. Its straight cylindrical configuration allows operators to work inside channels, fillets, recesses, side walls, and the bottoms of dead-end holes where larger abrasive discs cannot easily make contact. Compared with the 80-grit version, the finer 120-grit abrasive produces a less aggressive cutting action and a more refined sanding pattern, making it useful for intermediate-to-fine finishing on ferrous metals, non-ferrous metals, stainless steel, and high-tensile steel.
The United Abrasives 38076 features a multi-layer, self-dressing construction that exposes fresh cutting abrasive as successive layers wear away, helping maintain effective sanding action during use. Its 1/8" arbor opening corresponds to the manufacturer-listed 95104 cartridge roll mandrel for mounting on a compatible rotary tool. The 26,000 maximum RPM rating establishes the abrasive's operating speed limit and must be considered when selecting the tool and mounting accessory. The 1-1/2" length provides additional abrasive contact along elongated internal surfaces compared with shorter 1" rolls, while the 1/2" diameter offers useful sanding coverage wherever sufficient clearance is available. Supplied in a box of 100, the 38076 supports recurring fine sanding, deburring, and finishing requirements in machining facilities, toolrooms, fabrication shops, and industrial maintenance departments.
Type: Straight Cartridge Roll | Part Number: 38076 | Abrasive Material: Premium Aluminum Oxide | Diameter: 1/2" | Length: 1-1/2" | Arbor: 1/8" | Grit: 120 | Max RPM: 26,000 | Mandrel Part Number: 95104 | Quantity: 100 per Box | Material Application: Ferrous Metals, Non-Ferrous Metals, Stainless Steel, High-Tensile Steel
Features:
- Premium aluminum oxide grain provides effective abrasive action for sanding, blending, and finishing ferrous and non-ferrous metal surfaces.
- 120-grit abrasive supports fine surface preparation by smoothing minor machining marks and reducing scratches left by coarser sanding operations.
- 1/2" diameter provides localized abrasive contact across accessible recessed areas, grooves, and internal metal surfaces.
- 1-1/2" straight cylindrical profile offers additional working length for finishing elongated channels, internal side walls, fillets, and the bottoms of dead-end holes.
- Multi-layer, self-dressing construction exposes sharp, new cutting abrasive as successive layers wear away, helping maintain effective sanding performance.
- Suitable for high-speed light deburring and flash removal when operated within the manufacturer's specified maximum operating speed.
- Quick removal and installation help minimize interruptions when replacing cartridge rolls during multi-stage finishing operations.
- Supplied in boxes of 100 for organized abrasive stocking and repeated precision metalworking tasks.
Applications:
- Precision machining and CNC finishing - Refining light machining marks, removing small residual burrs, and smoothing elongated internal grooves on machined components.
- Tool and die maintenance - Finishing recessed contours, internal fillets, and tooling features where a compact abrasive with extended contact length is useful.
- Stainless steel fabrication - Performing fine sanding and surface blending on stainless steel and high-tensile steel components following initial deburring.
- Metal component manufacturing - Refining sanding marks left by coarser abrasives and preparing localized surfaces for subsequent finishing operations.
- Industrial maintenance and equipment repair - Smoothing minor imperfections in recessed metal features on machinery components, fittings, and repair parts.
FAQs:
- Q: What is the difference between United Abrasives 38076 and 38074 Straight Cartridge Rolls?
A: Both models have a 1/2" diameter, 1-1/2" length, 1/8" arbor opening, and maximum operating speed of 26,000 RPM. The 38076 uses finer 120-grit abrasive for surface refinement and light deburring, while the 38074 uses 80-grit abrasive for intermediate sanding and greater material removal. - Q: How does the 38076 compare with the shorter United Abrasives 38066?
A: Both cartridge rolls feature a 1/2" diameter and 120-grit aluminum oxide abrasive. The 38076 measures 1-1/2" long, while the 38066 measures 1" long. The additional abrasive length provides more contact area for sanding extended grooves and internal side walls when the workpiece has adequate clearance. - Q: Is 120 grit suitable for removing heavy burrs?
A: The 120-grit abrasive is better suited to light deburring, scratch reduction, and surface blending than aggressive stock removal. For larger burrs or pronounced machining marks, use a coarser cartridge roll first before progressing to the 38076 for a finer finish. - Q: Can the United Abrasives 38076 be used on stainless steel?
A: Yes. United Abrasives identifies stainless steel and high-tensile steel among the suitable materials, along with ferrous and non-ferrous metals. When preventing cross-contamination is important, use cartridge rolls dedicated to stainless steel rather than abrasives previously used on carbon steel. - Q: Which mandrel is recommended for United Abrasives part number 38076?
A: The United Abrasives 2025-2026 catalog specifies mandrel part number 95104 for this cartridge roll. The 38076 has a 1/8" arbor opening. Verify correct mounting engagement, secure installation, and compatibility with the selected rotary tool before operation. - Q: How many cartridge rolls come in a box, and what is their maximum operating speed?
A: United Abrasives part number 38076 is sold in a box of 100 cartridge rolls, each rated for a maximum operating speed of 26,000 RPM. The power tool must not exceed the abrasive's maximum rated speed, and the selected mandrel must also be suitable for the operating conditions.
Available Variations and Specifications
| SKU (Qty 100) |
Base Dia | Length | Arbor | Grit | Max RPM | Mandrel Part # |
|---|---|---|---|---|---|---|
| 38070 | 1/2" | 1-1/2" | 3/16" | 36 | 26,000 | 95107 |
| 38071 | 1/2" | 1-1/2" | 1/8" | 40 | 26,000 | 95104 |
| 38072 | 1/2" | 1-1/2" | 1/8" | 50 | 26,000 | 95104 |
| 38073 | 1/2" | 1-1/2" | 1/8" | 60 | 26,000 | 95104 |
| 38074 | 1/2" | 1-1/2" | 1/8" | 80 | 26,000 | 95104 |
| 38076 | 1/2" | 1-1/2" | 1/8" | 120 | 26,000 | 95104 |
| 38080 | 1/2" | 2" | 1/8" | 60 | 26,000 | 95103 |
| 38081 | 1/2" | 2" | 1/8" | 80 | 26,000 | 95103 |
| 38083 | 1/2" | 2" | 1/8" | 120 | 26,000 | 95103 |
| 38087 | 1/2" | 2" | 3/16" | 60 | 26,000 | 95106 |
| 38088 | 1/2" | 2" | 3/16" | 80 | 26,000 | 95106 |
| 38089 | 1/2" | 2" | 3/16" | 120 | 26,000 | 95106 |
| 38093 | 5/8" | 1-1/2" | 1/8" | 60 | 18,000 | 95104 |
| 38094 | 5/8" | 1-1/2" | 1/8" | 80 | 18,000 | 95104 |
| 38095 | 5/8" | 1-1/2" | 1/8" | 120 | 18,000 | 95104 |
| 38112 | 3/4" | 1-1/2" | 3/16" | 40 | 18,000 | 95107 |
| 38113 | 3/4" | 1-1/2" | 3/16" | 60 | 18,000 | 95107 |
| 38114 | 3/4" | 1-1/2" | 3/16" | 80 | 18,000 | 95107 |
| 38119 | 3/4" | 2" | 3/16" | 40 | 18,000 | 95106 |
| 38120 | 3/4" | 2" | 3/16" | 60 | 18,000 | 95106 |
| 38121 | 3/4" | 2" | 3/16" | 80 | 18,000 | 95106 |
| 38122 | 3/4" | 2" | 3/16" | 120 | 18,000 | 95106 |
| 38126 | 1" | 1-1/2" | 1/4" | 60 | 18,000 | 95102 |
| 38127 | 1" | 1-1/2" | 1/4" | 80 | 18,000 | 95102 |
| 38128 | 1" | 1-1/2" | 1/4" | 120 | 18,000 | 95102 |
| 38132 | 1" | 2" | 1/4" | 60 | 18,000 | 95101 |
| 38133 | 1" | 2" | 1/4" | 80 | 18,000 | 95101 |
| 38134 | 1" | 2" | 1/4" | 120 | 18,000 | 95101 |
Looking for more information about United Abrasives Straight Cartridge Roll? For help choosing the correct United Abrasives Straight Cartridge Rolls for your application, please call (800) 608-5210 or email info@intlairtool.com
- Type
- Straight 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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