United Abrasives Tapered Cartridge Roll | 38346 | 3/4" Diameter | 120 Grit | Sold by Box of 100

For metal finishing tasks where a finer abrasive scratch pattern and access to confined surfaces are important, the United Abrasives 38346 Tapered Cartridge Roll offers a controlled approach to sanding, blending, and deburring. Manufactured with premium aluminum oxide grain, this cartridge roll features a 3/4" base diameter, 2" length, and 120 grit abrasive for refining metal surfaces after machining, fabrication, or preliminary grinding. The full-taper configuration allows the abrasive to reach channels, fillets, recesses, side walls, and bottoms of dead-end holes where conventional sanding discs may be difficult to maneuver. Compared with 60- and 80-grit alternatives, the 120-grit abrasive produces a finer scratch pattern, making it especially useful for secondary finishing and surface refinement.

The 38346 incorporates multi-layer, self-dressing construction, meaning fresh abrasive cutting grain becomes exposed as each layer wears away. This helps maintain effective sanding action throughout the usable life of the roll. Its 3/16" arbor hole works with the manufacturer's specified 95106 cartridge roll mandrel for mounting on an appropriately rated die grinder. The 18,000 RPM maximum operating speed provides an important limit when selecting compatible equipment for high-speed finishing work. Supplied in a box of 100 cartridge rolls, this configuration offers a convenient inventory quantity for machine shops, metal fabrication facilities, and maintenance operations performing repeated detail finishing tasks.

Type: Tapered Cartridge Roll | Part Number: 38346 | Abrasive Material: Premium Aluminum Oxide | Base Diameter: 3/4" | Length: 2" | Arbor Hole: 3/16" | Grit: 120 | Maximum Speed: 18,000 RPM | Recommended Mandrel: 95106 | Quantity: 100 Rolls per Box

Features:

• Premium aluminum oxide grain provides abrasive cutting action for blending, deburring, and finishing ferrous and non-ferrous metal surfaces.
• 120-grit configuration produces a finer scratch pattern than 60- or 80-grit cartridge rolls, supporting more refined surface finishing.
• Full-taper design enables sanding and polishing inside channels, fillets, recesses, side walls, and bottoms of dead-end holes.
• Multi-layer, self-dressing construction exposes fresh abrasive grain as successive layers wear away, helping maintain consistent cutting action.
• Supports high-speed deburring and flash removal on compatible metal workpieces when used with properly rated equipment.
• Quick removal and installation allow operators to replace worn rolls without complicated abrasive changes.
• Recommended 95106 mandrel provides a manufacturer-specified mounting accessory for use with an appropriate die grinder.
• Packaged in boxes of 100 rolls to support regular finishing operations and organized abrasive inventory management.

Applications:

• Precision machining – Refining machined edges, fillets, internal contours, and recessed metal surfaces after initial deburring operations.
• Stainless steel fabrication – Performing localized surface blending and fine abrasive finishing on stainless steel and high-tensile steel components.
• Metalworking and toolmaking – Smoothing small metal features and detailed contours where a finer abrasive finish is preferred over aggressive stock removal.
• Welding and fabrication – Refining accessible weld transitions and smoothing previously ground surfaces before subsequent finishing processes.
• Industrial maintenance and repair – Removing light surface irregularities and finishing recessed metal components during refurbishment and equipment servicing.

FAQs:

• Q: What is the advantage of choosing the United Abrasives 38346 in 120 grit?
  A: The 120-grit abrasive produces a finer scratch pattern than the 60- and 80-grit options in the same size. It is particularly useful for refining previously sanded metal surfaces, blending minor irregularities, and performing finishing work where aggressive material removal is unnecessary.
• Q: How does the 38346 compare with the 38344 and 38345 cartridge rolls?
  A: All three models have a 3/4" base diameter, 2" length, 3/16" arbor hole, and 18,000 RPM maximum operating speed. Model 38344 uses 60 grit for coarser material removal, model 38345 uses 80 grit for intermediate sanding, and model 38346 uses 120 grit for finer surface refinement.
• Q: Can the 38346 tapered cartridge roll be used on stainless steel?
  A: Yes. United Abrasives identifies stainless steel, high-tensile steel, and ferrous and non-ferrous metals as suitable applications. When finishing stainless steel, use appropriate abrasive handling practices to prevent contamination from other metals.
• Q: What die grinder setup is required for this cartridge roll?
  A: The 38346 has a 3/16" arbor hole, and United Abrasives specifies mandrel part number 95106. Use a die grinder capable of securely holding the appropriate mandrel, and ensure its maximum operating speed does not exceed the cartridge roll's 18,000 RPM rating. The mandrel must also be rated for the operating speed.
• Q: Does the box include the mounting mandrel?
  A: The listed package quantity is 100 tapered cartridge rolls. Mandrel 95106 is identified as a recommended accessory, but its inclusion is not confirmed in the manufacturer's product information. Confirm or order the mandrel separately as needed.

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