When substantial burr removal and coarse surface preparation are required inside metal grooves, cavities, and recessed features, the United Abrasives 38070 Straight Cartridge Roll provides aggressive abrasive cutting action in a compact cylindrical configuration. Featuring a 1/2" diameter, 1-1/2" length, and 36-grit premium aluminum oxide abrasive, this cartridge roll is suited to removing prominent machining marks, flash, and rough surface irregularities before finer sanding operations. Its straight profile allows abrasive contact along channels, fillets, recesses, side walls, and the bottoms of dead-end holes. The coarse 36-grit abrasive supports greater initial stock removal than finer cartridge rolls, making it useful for preparing ferrous metals, non-ferrous metals, stainless steel, and high-tensile steel for subsequent finishing.
The United Abrasives 38070 incorporates a multi-layer, self-dressing construction that exposes fresh cutting abrasive as successive layers wear away, helping maintain effective material removal throughout use. Unlike several finer-grit cartridge rolls in the same dimensional family, the 38070 features a 3/16" arbor opening and uses the manufacturer-specified 95107 mandrel, an important distinction when selecting mounting accessories. Its 26,000 maximum RPM rating establishes the abrasive's upper operating speed limit for matching compatible rotary tools and mandrels. The 1-1/2" abrasive length provides additional working surface along elongated internal walls, while the 1/2" diameter accommodates recessed areas with sufficient clearance. Supplied in a box of 100, this configuration supports recurring coarse sanding and deburring requirements in machine shops, metal fabrication facilities, toolrooms, and industrial maintenance departments.
Type: Straight Cartridge Roll | Part Number: 38070 | Abrasive Material: Premium Aluminum Oxide | Diameter: 1/2" | Length: 1-1/2" | Arbor: 3/16" | Grit: 36 | Max RPM: 26,000 | Mandrel Part Number: 95107 | Quantity: 100 per Box | Material Application: Ferrous Metals, Non-Ferrous Metals, Stainless Steel, High-Tensile Steel
Features:
- Premium aluminum oxide grain provides aggressive abrasive cutting action for coarse sanding, deburring, and metal surface preparation.
- 36-grit construction supports removal of pronounced burrs, flash, and machining irregularities before progressing to finer abrasive grades.
- 1/2" diameter provides a concentrated abrasive working surface for accessible recesses, grooves, and internal metal features.
- 1-1/2" straight cylindrical profile allows extended abrasive contact along channels, fillets, side walls, and elongated cavities.
- Multi-layer, self-dressing construction exposes sharp, new cutting abrasive as successive layers wear away, helping maintain effective stock removal.
- 3/16" arbor configuration corresponds to United Abrasives mandrel part number 95107, distinguishing this roll from adjacent 1/8" arbor models.
- Quick removal and installation help minimize interruptions when replacing cartridge rolls during repeated deburring operations.
- Supplied in boxes of 100 for organized abrasive replenishment and recurring metalworking requirements.
Applications:
- Machining and CNC workshops - Removing substantial machining burrs, rough tool marks, and unwanted material from accessible grooves and recessed metal surfaces.
- Metal fabrication and welding - Cleaning up localized flash, smoothing rough edges, and preparing recessed metal features for subsequent abrasive finishing.
- Tool and die manufacturing - Coarse sanding of internal contours, elongated cavities, and tooling recesses requiring a compact cylindrical abrasive.
- Stainless steel and alloy steel processing - Initial deburring and material removal on stainless steel and high-tensile steel components before finer surface treatment.
- Industrial maintenance and equipment repair - Removing localized surface irregularities and preparing accessible metal components for refurbishment or additional finishing.
FAQs:
- Q: What is the United Abrasives 38070 Straight Cartridge Roll used for?
A: The 38070 is used for aggressive sanding, deburring, flash removal, and initial surface preparation on metal components. Its coarse 36-grit abrasive is particularly useful for removing material before switching to finer grades for surface refinement. - Q: What is the difference between United Abrasives 38070 and 38071 cartridge rolls?
A: Both models measure 1/2" in diameter and 1-1/2" in length, with a maximum operating speed of 26,000 RPM. The 38070 uses 36-grit abrasive and a 3/16" arbor, while the 38071 uses 40-grit abrasive and a 1/8" arbor. Their mandrel requirements are different, so arbor size must be checked before ordering. - Q: Which mandrel is recommended for United Abrasives part number 38070?
A: The United Abrasives 20252026 catalog specifies mandrel part number 95107 for the 38070. This cartridge roll has a 3/16" arbor opening, not the 1/8" opening used by several other 1/2" diameter models. Verify tool fit and operating speed suitability before installation. - Q: Can the 38070 cartridge roll be used on stainless steel?
A: Yes. United Abrasives lists stainless steel and high-tensile steel among the suitable materials, along with ferrous and non-ferrous metals. The coarse grit is intended for initial material removal rather than fine finishing. Use dedicated abrasives when preventing cross-contamination from carbon steel is important. - Q: Is 36 grit appropriate for achieving a smooth finished surface?
A: The 36-grit abrasive is intended primarily for aggressive stock removal and coarse surface preparation. A smoother finish typically requires additional sanding with progressively finer grits after the initial deburring or blending operation. - Q: How many cartridge rolls are supplied, and what is their maximum rated speed?
A: United Abrasives part number 38070 is sold in a box of 100 cartridge rolls, each with a maximum operating speed of 26,000 RPM. Always ensure the power tool does not exceed the abrasive's maximum operating speed and that the selected mandrel is suitable for the application.
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.)
- 3/16
- Grit
- 36
- RPM
- 26000
- Mandrel Part
- 95107
- Box of
- 100
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