United Abrasives Straight Cartridge Roll | 38003 | 3/16" Diameter | 120 Grit | Sold by Box of 100

United Abrasives 38003 Straight Cartridge Roll provides a compact abrasive solution for controlled deburring, blending, and polishing. Featuring a 3/16" diameter, 1" length, and 120 grit premium aluminum oxide abrasive, this cartridge roll is suited to finer finishing work on ferrous metals, non-ferrous metals, stainless steel, and high-tensile steel. The straight cylindrical shape allows the abrasive to reach narrow channels, fillets, recesses, side walls, and the bottoms of dead-end holes where conventional sanding accessories may be too large. Its finer 120-grit abrasive produces a less aggressive sanding action than the 80-grit version, making it useful for refining previously prepared surfaces and reducing visible sanding marks.

The United Abrasives 38003 incorporates a multi-layer, self-dressing construction, which progressively exposes fresh abrasive grain as the outer layers wear away to help sustain cutting effectiveness. Its 3/32" arbor opening corresponds to the manufacturer-listed 95108 cartridge roll mandrel, allowing the roll to be mounted for rotary sanding and finishing operations. With a maximum operating speed of 26,000 RPM, this abrasive supports high-speed deburring and flash removal when used with a properly matched tool and mandrel. Supplied in a box of 100, the 38003 is a practical consumable for machine shops, fabrication facilities, maintenance departments, and precision metalworking operations requiring consistent abrasive size and grit selection.

Type: Straight Cartridge Roll | Part Number: 38003 | Abrasive Material: Aluminum Oxide | Diameter: 3/16" | Length: 1" | Arbor: 3/32" | Grit: 120 | Max RPM: 26,000 | Mandrel Part Number: 95108 | Quantity: 100 per Box | Material Application: Ferrous Metals, Non-Ferrous Metals, Stainless Steel, High-Tensile Steel

Features:

• Premium aluminum oxide grain provides an effective abrasive surface for sanding, blending, and polishing ferrous and non-ferrous metals.
• 120-grit abrasive supports finer surface finishing and scratch refinement compared with coarser cartridge roll grits.
• Compact 3/16" diameter provides access to narrow grooves, small recesses, and internal metal features that are difficult to reach with larger abrasive tools.
• 1" straight cylindrical configuration enables controlled sanding along side walls, channels, fillets, and the bottoms of dead-end holes.
• Multi-layer, self-dressing construction exposes sharp, new abrasive grain as each layer wears away, helping maintain cutting performance during use.
• Suitable for high-speed deburring and flash removal when operated within the specified maximum speed rating.
• Quick removal and installation simplify abrasive replacement during repeated finishing operations.
• Box quantity of 100 supports inventory planning and routine abrasive replenishment for metalworking applications.

Applications:

• Precision machining and finishing - Refine small machined surfaces, remove minor burrs, and smooth narrow internal features after machining.
• Tool and die workshops - Finishing recessed contours, fillets, and detailed metal surfaces where a small abrasive diameter improves accessibility.
• Stainless steel fabrication - Fine-sanding and blending stainless steel and high-tensile steel components before additional finishing steps.
• Metal fabrication - Reducing sanding marks, smoothing edges, and cleaning up small surface imperfections on fabricated parts.
• Industrial maintenance and repair - Performing localized surface preparation on metal components, fittings, and repair areas with limited tool clearance.

FAQs:

• Q: What is the difference between United Abrasives 38003 and 38001 cartridge rolls?
  A: Both cartridge rolls have a 3/16" diameter, 1" length, and 26,000 RPM maximum operating speed. The 38003 uses 120-grit abrasive for finer sanding and finishing, while the 38001 uses a coarser 80-grit abrasive for more aggressive surface preparation and material removal.
• Q: What types of metal can the 38003 Straight Cartridge Roll be used on?
  A: United Abrasives lists ferrous metals, non-ferrous metals, stainless steel, and high-tensile steel as suitable materials. The 120-grit aluminum oxide abrasive is particularly useful for surface refinement and controlled finishing on these metals.
• Q: Which mandrel fits the United Abrasives 38003 cartridge roll?
  A: The manufacturer's catalog specifies mandrel part number 95108 for this cartridge roll. The abrasive has a 3/32" arbor opening, so verify that the mandrel is properly sized and compatible with the selected rotary tool before operation.
• Q: Is 120 grit suitable for removing heavy burrs?
  A: The 120-grit version is better suited to fine deburring, blending, and surface refinement than aggressive stock removal. For heavier burrs or more substantial material removal, a coarser grit may be more appropriate before progressing to 120 grit for finishing.
• Q: What is the maximum RPM and package quantity for part number 38003?
  A: The United Abrasives 38003 has a maximum operating speed of 26,000 RPM and is listed in a box quantity of 100. Always match the abrasive and mandrel speed ratings to the power tool before use.

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For help choosing the correct United Abrasives Straight Cartridge Rolls for your application, please call (800) 608-5210 or email info@intlairtool.com