For removing machining burrs, smoothing rough metal surfaces, and preparing recessed areas for further finishing, the United Abrasives 38072 Straight Cartridge Roll provides effective material removal in a compact cylindrical abrasive format. Featuring a 1/2" diameter, 1-1/2" length, and 50-grit premium aluminum oxide abrasive, this cartridge roll is suited to coarse sanding, flash removal, and localized surface blending. Its straight configuration allows operators to work along channels, fillets, recesses, side walls, and the bottoms of dead-end holes where conventional abrasive discs cannot easily reach. The 50-grit abrasive provides aggressive cutting action for initial surface preparation while producing a slightly finer sanding pattern than the coarser 36- and 40-grit alternatives. Suitable workpiece materials include ferrous metals, non-ferrous metals, stainless steel, and high-tensile steel.
The United Abrasives 38072 incorporates a multi-layer, self-dressing construction, which exposes sharp, fresh abrasive grain as successive layers wear away, helping maintain effective cutting action during sanding operations. Its 1/8" arbor opening corresponds to the manufacturer-specified 95104 cartridge roll mandrel for mounting on compatible rotary tools. The 26,000 maximum RPM rating establishes the abrasive's upper operating speed limit and must be considered when selecting the power tool and mandrel. Compared with the shorter 1" United Abrasives 38062, this model provides an additional 1/2" of abrasive length for working along elongated grooves and recessed side walls. Supplied in a box of 100, the 38072 supports recurring deburring and surface preparation requirements in machine shops, metal fabrication facilities, toolrooms, and industrial maintenance departments.
Type: Straight Cartridge Roll | Part Number: 38072 | Abrasive Material: Premium Aluminum Oxide | Diameter: 1/2" | Length: 1-1/2" | Arbor: 1/8" | Grit: 50 | 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 cutting action for coarse sanding, deburring, and surface preparation on ferrous and non-ferrous metals.
- 50-grit abrasive supports removal of machining burrs, flash, and rough surface imperfections before subsequent finishing operations.
- 1/2" diameter offers a practical abrasive contact area for recessed metal features, internal channels, and accessible cavities.
- 1-1/2" straight cylindrical profile provides extended abrasive contact along grooves, fillets, internal side walls, and the bottoms of dead-end holes.
- Multi-layer, self-dressing construction exposes fresh cutting abrasive as successive layers wear away, helping maintain effective material removal.
- Suitable for high-speed deburring and flash removal when operated within the manufacturer's specified maximum speed rating.
- Quick removal and installation help reduce interruptions during abrasive replacement.
- Supplied in boxes of 100 for routine abrasive replenishment in machining, fabrication, and maintenance environments.
Applications:
- Machine shops and CNC manufacturing - Removing machining burrs, blending rough tool marks, and sanding recessed surfaces on machined metal components.
- Metal fabrication and welding - Cleaning up flash, smoothing rough edges, and preparing accessible internal features before finer abrasive finishing.
- Tool and die manufacturing - Performing coarse sanding along elongated tooling recesses, internal fillets, and detailed metal contours.
- Stainless steel and alloy steel processing - Initial deburring and surface preparation on stainless steel and high-tensile steel workpieces.
- Industrial maintenance and equipment repair - Removing localized surface irregularities and preparing recessed machinery components and metal fittings for refurbishment.
FAQs:
- Q: What is the United Abrasives 38072 Straight Cartridge Roll used for?
A: The 38072 is used for coarse sanding, deburring, flash removal, and initial surface preparation on metal components. Its 50-grit abrasive works well when removing material from grooves and recessed surfaces before progressing to finer finishing grits. - Q: What is the difference between United Abrasives 38072 and 38071 cartridge rolls?
A: Both models have a 1/2" diameter, 1-1/2" length, 1/8" arbor opening, and 26,000 RPM maximum operating speed. The 38072 features 50-grit abrasive for coarse sanding with a somewhat finer scratch pattern, while the 38071 uses 40-grit abrasive for more aggressive stock removal. - Q: How does the United Abrasives 38072 compare with the 38062?
A: Both cartridge rolls feature a 1/2" diameter and 50-grit aluminum oxide abrasive. The 38072 measures 1-1/2" long, while the 38062 measures 1" long. The additional abrasive length makes the 38072 useful for sanding extended grooves and internal walls where sufficient clearance is available. - Q: Can the United Abrasives 38072 be used on stainless steel?
A: Yes. United Abrasives identifies stainless steel and high-tensile steel among the suitable workpiece 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 38072?
A: The United Abrasives 2025-2026 catalog specifies mandrel part number 95104 for this cartridge roll. The 38072 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 the maximum operating speed?
A: United Abrasives part number 38072 is sold in a box of 100 cartridge rolls, each with a maximum rated operating speed of 26,000 RPM. The power tool must not exceed the abrasive's maximum rated speed, and the 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
- 50
- RPM
- 26000
- Mandrel Part
- 95104
- Box of
- 100
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