When the finishing job calls for smoothing burrs and refining metal surfaces inside narrow channels or recessed areas, the United Abrasives 38345 Tapered Cartridge Roll provides a practical abrasive solution for detailed metalworking. This premium aluminum oxide cartridge roll features a 3/4" base diameter, 2" length, and 80 grit abrasive for controlled blending, deburring, and surface finishing. Its tapered shape allows the abrasive to reach fillets, side walls, and bottoms of dead-end holes where conventional abrasive discs may have limited access. The 80-grit configuration offers a finer abrasive finish than the 60-grit alternative, making it useful for refining surfaces after initial material removal.
United Abrasives incorporates multi-layer, self-dressing construction, which exposes fresh cutting grain as successive abrasive layers wear down to help sustain cutting action during use. The 3/16" arbor hole is specified for use with the manufacturer's recommended 95106 cartridge roll mandrel, allowing mounting on a suitable die grinder. With a maximum operating speed of 18,000 RPM, the 38345 can be used for high-speed deburring and flash removal when matched to properly rated equipment. Packaged in a box of 100 rolls, this option is convenient for fabrication shops, machine shops, and maintenance departments performing repetitive precision sanding and metal finishing tasks.
Type: Tapered Cartridge Roll | Part Number: 38345 | Abrasive Material: Aluminum Oxide | Base Diameter: 3/4" | Length: 2" | Arbor Hole: 3/16" | Grit: 80 | Maximum Speed: 18,000 RPM | Recommended Mandrel: 95106 | Quantity: 100 Rolls per Box
Features:
- Premium aluminum oxide abrasive grain supports sanding, blending, and finishing on ferrous and non-ferrous metals.
- 80-grit abrasive provides a finer finish than coarser 60-grit cartridge rolls while retaining material removal capability.
- Full tapered profile helps reach narrow channels, fillets, recesses, and other difficult-to-access metal surfaces.
- Multi-layer, self-dressing construction reveals new cutting abrasive as the outer layers wear away, helping sustain cutting performance.
- Suitable for high-speed deburring and flash removal using a correctly matched die grinder and mandrel.
- Quick removal and installation reduce interruption when changing worn cartridge rolls during finishing operations.
- Recommended 95106 cartridge roll mandrel provides a manufacturer-specified mounting option.
- Supplied in boxes of 100 rolls for convenient stocking and recurring abrasive finishing requirements.
Applications:
- Precision metal fabrication Blending minor surface irregularities and refining edges on fabricated steel and stainless steel parts.
- Machine shops and component manufacturing Finishing machined channels, internal corners, fillets, and recessed features after machining operations.
- Welding and finishing operations Smoothing accessible welded areas and preparing localized metal surfaces for subsequent finishing steps.
- Toolmaking and metalworking Performing controlled abrasive finishing on small contours and detailed metal features that require a tapered abrasive shape.
- Industrial maintenance and repair Removing light burrs and refining metal components during equipment refurbishment and general workshop repairs.
FAQs:
- Q: What is the difference between United Abrasives 38345 and 38344?
A: Both cartridge rolls share the same 3/4" base diameter, 2" length, 3/16" arbor hole, and 18,000 RPM maximum operating speed. The difference is abrasive grit: model 38345 uses 80 grit for a finer finish, while model 38344 uses coarser 60 grit for more aggressive material removal. - Q: Is an 80-grit tapered cartridge roll suitable for removing burrs?
A: Yes. The 80-grit aluminum oxide abrasive can remove burrs and blend surface irregularities on compatible metals. It is especially useful when the application requires controlled material removal with a finer scratch pattern than a 60-grit roll. - Q: Which materials can the United Abrasives 38345 be used on?
A: United Abrasives lists ferrous and non-ferrous metals, stainless steel, and high-tensile steel as suitable material applications. Select appropriate grinding conditions and avoid transferring contamination between different workpiece materials. - Q: What type of mandrel is required for the 38345 cartridge roll?
A: United Abrasives specifies cartridge roll mandrel 95106 for this configuration. The cartridge roll has a 3/16" arbor hole and must be mounted securely using a compatible, appropriately rated mandrel and die grinder. - Q: How many 38345 cartridge rolls are supplied per order?
A: This product is sold by the box, with 100 tapered cartridge rolls per box. The recommended mandrel is identified separately in the manufacturer's catalog and is not confirmed as part of the package.
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.)
- 3/4
- Length (in.)
- 2
- Arbor Hole (in.)
- 3/16
- Grit
- 80
- RPM
- 18000
- Mandrel Part
- 95106
- Box of
- 100
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