For refining rough machining marks and removing residual burrs from recessed metal components, the United Abrasives 38074 Straight Cartridge Roll provides a balanced combination of abrasive cutting and surface finishing. Featuring a 1/2" diameter, 1-1/2" length, and 80-grit premium aluminum oxide abrasive, this cartridge roll is suited to intermediate sanding, deburring, and blending operations where both material removal and surface texture matter. Its straight cylindrical profile reaches channels, fillets, internal side walls, recessed contours, and the bottoms of dead-end holes that are difficult to access with conventional sanding discs. Compared with coarser 40-, 50-, and 60-grit cartridge rolls, the 80-grit configuration leaves a finer sanding pattern while retaining useful cutting action. Suitable workpiece materials include ferrous metals, non-ferrous metals, stainless steel, and high-tensile steel.
The United Abrasives 38074 incorporates a multi-layer, self-dressing construction that reveals fresh, sharp cutting abrasive as successive layers wear away, helping maintain sanding effectiveness throughout use. Its 1/8" arbor opening corresponds to the manufacturer-listed 95104 cartridge roll mandrel for installation 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 tool and mounting accessory. The 1-1/2" length provides additional abrasive working surface compared with shorter 1" models, making it useful for blending extended grooves and internal walls where sufficient clearance is available. Supplied in a box of 100, this configuration supports routine abrasive replenishment in metal fabrication, precision machining, toolroom, and industrial maintenance environments.
Type: Straight Cartridge Roll | Part Number: 38074 | Abrasive Material: Premium Aluminum Oxide | Diameter: 1/2" | Length: 1-1/2" | Arbor: 1/8" | Grit: 80 | 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 delivers effective abrasive cutting action for sanding, deburring, and blending ferrous and non-ferrous metal surfaces.
- 80-grit abrasive supports intermediate surface preparation, removing small burrs and refining machining marks with a finer scratch pattern than coarser grits.
- 1/2" diameter provides a useful abrasive contact area for accessible grooves, cavities, and recessed metal components.
- 1-1/2" straight cylindrical profile extends abrasive contact along internal side walls, elongated channels, 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 deburring and flash removal when operated within the manufacturer's specified operating speed limits.
- Quick removal and installation help minimize interruptions when replacing cartridge rolls during repeated finishing operations.
- Supplied in boxes of 100 for convenient abrasive stocking and replenishment in machining, fabrication, and maintenance facilities.
Applications:
- Precision machining and CNC workshops - Removing residual burrs, blending machining marks, and refining elongated grooves or accessible internal surfaces on machined components.
- Metal fabrication and finishing - Smoothing localized surface imperfections and preparing recessed metal features for subsequent finishing processes.
- Tool and die maintenance - Sanding internal fillets, tooling recesses, and extended contours where concentrated abrasive contact is required.
- Stainless steel and alloy steel processing - Performing intermediate sanding and surface blending on stainless steel and high-tensile steel workpieces.
- Industrial maintenance and equipment repair - Cleaning up rough metal areas and refining recessed surfaces on machinery components, fittings, and repair parts.
FAQs:
- Q: What is the difference between United Abrasives 38074 and 38073 Straight 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 38074 uses finer 80-grit aluminum oxide abrasive for intermediate sanding and surface blending, while the 38073 features 60-grit abrasive for more aggressive material removal. - Q: How does the United Abrasives 38074 compare with the shorter 38064 cartridge roll?
A: Both models feature a 1/2" diameter and 80-grit abrasive. The 38074 measures 1-1/2" long, while the 38064 measures 1" long. The additional abrasive length provides more working surface for elongated grooves and recessed side walls when adequate clearance is available. - Q: Is 80 grit suitable for removing heavy burrs?
A: The 80-grit abrasive works well for minor burr removal, intermediate sanding, and surface blending. For pronounced burrs or substantial stock removal, a coarser 40-, 50-, or 60-grit cartridge roll may be more effective before progressing to 80 grit for refinement. - Q: Can the United Abrasives 38074 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, reserve separate cartridge rolls for stainless steel instead of using abrasives previously applied to carbon steel. - Q: Which mandrel is recommended for United Abrasives part number 38074?
A: The United Abrasives 2025-2026 catalog specifies mandrel part number 95104 for this cartridge roll. The roll has a 1/8" arbor opening. Verify proper 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 38074 is sold in a box of 100 cartridge rolls, each rated for a maximum operating speed of 26,000 RPM. The tool's maximum speed must not exceed the abrasive's 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
- 80
- RPM
- 26000
- Mandrel Part
- 95104
- Box of
- 100
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