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Description
3M 7100071830 is an OEM-grade double-sealed bearing designed to restore smooth operation and extend the service life of the 3M Random Orbital Sander 28516. This precision bearing has an 8.0 mm center bore, a 12.0 mm outside diameter, and a thickness of 28.0 mm, which corresponds to the original equipment tolerances for direct fit. The double-sealed design minimizes dust and abrasive particle infiltration, reducing friction and wear in high-speed orbital applications. When there is measurable vibration, noise, or reduced orbital performance, technicians and maintenance teams specify this replacement bearing. The bearing, which is manufactured to 3M quality standards, helps to ensure repeatable rotational accuracy and predictable tool performance in manufacturing and repair environments.
Product Features and Benefits
Direct OEM fit for sander 28516
Specifically dimensioned to replace the original bearing in the 3M Random Orbital Sander 28516, enabling fast, drop-in service and correct tool geometry.
Double-sealed construction
Seals on both sides minimize contamination by dust and abrasive debris, reducing maintenance frequency and extending bearing life in sanding environments.
Precision dimensions for reliable performance
8.0 mm bore, 12.0 mm OAD, and 28.0 mm thickness meet factory tolerances to maintain concentricity and minimize runout at operating speeds.
Low-friction operation
The 3M double-sealed bearing is designed to reduce rolling resistance, increase motor efficiency, lower operating temperatures, and ensure consistent orbital motion.
Durable materials for shop use
Heat-treated races and quality rolling elements sustain repetitive load cycles encountered in production and collision repair workflows.
Product Specifications
| Manufacturer Part Number | 7100071830 |
| Legacy SKU | 60440241432 |
| Overall Diameter (Inch) | 0.472441" |
| Overall Diameter (mm) | 12.0mm |
| Overall Height (Imperial) | 1.27" |
| Overall Height (cm) | 3.23cm |
| Overall Length (Inch) | 3.0" |
| Overall Length (cm) | 7.62cm |
| Overall Thickness (Inch) | 1.102" |
| Overall Thickness (mm) | 28.0mm |
| Overall Width (Inch) | 5.0" |
| Overall Width (cm) | 12.7cm |
| Center Hole Diameter (Inch) | 0.314" |
| Center Hole Diameter (mm) | 8.0mm |
| Abrasive Material | Non Pertinent |
| Backing Material | Non Pertinent |
| For Use With | 3M Random Orbital Sander 28516 |
| Product Type | Bearing |
Frequently Asked Questions
Is this bearing an original equipment replacement for the sander?
Yes, 3M 7100071830 is specified as the OEM replacement bearing for the Random Orbital Sander 28516.
How does the double-sealed design help in sanding tools?
The double seals block dust and abrasive contamination, extending bearing life and preserving low-friction rotation.
Where can I find 3M random orbital sander replacement parts?
Authorized 3M distributors and approved industrial suppliers stock this bearing as part of 3M random orbital sander parts inventories.
What are the bearing dimensions I should verify before ordering?
Confirm the bearing’s 8.0 mm center bore, 12.0 mm outside diameter, and 28.0 mm thickness for compatibility with your tool.
Warning:
This product can expose you to materials and/or chemicals including arsenic, lead, and other materials and/or chemicals which are known to the state of California to cause cancer and/or reproductive harm.
For more information, visit www.P65Warnings.ca.gov
