Mirka 5" 8mm Non-Vacuum Sander, MR-508
Product Overview
Mirka MR‑508 5" 8mm Orbit Non‑Vacuum Pneumatic Air Random Orbital Sander (ROS) is a heavy‑duty, aggressive sanding tool engineered for rapid material removal in automotive, marine, woodworking, and industrial environments. The 8mm (5/16") orbit delivers a wide, powerful cutting action ideal for coarse sanding with 36–80 grit abrasives.
Constructed from precision‑molded composite materials, the MR‑508 provides excellent strength and durability while reducing operator fatigue and noise. Moisture‑resistant composite rotors and premium counterweight bearings ensure long service life and reliable performance in demanding professional applications.
Delivering true 12,000 RPM performance, the MR‑508 is counter‑balanced specifically for its 5" backup pad (110‑gram weight), ensuring smooth operation and predictable sanding results even under heavy load.
This sander can be upgraded to a vacuum‑ready or self‑generating vacuum configuration using optional conversion kits (sold separately), offering flexibility for dust‑free sanding setups.
Includes pad wrench, air‑tool oil, and a 5" vinyl‑face backup pad compatible with PSA sticky‑back sandpaper.
Features & Benefits
- 8mm (5/16") orbit ideal for aggressive sanding and rapid stock removal
- Best suited for coarse sanding with 36–80 grit abrasives
- Precision‑molded composite construction for strength and durability
- Ergonomic design reduces operator fatigue and noise
- True 12,000 RPM performance for maximum productivity
- Counter‑balanced for 5" backup pads (110‑gram weight) for smooth operation
- Moisture‑resistant composite rotors and premium bearings for long life
- Includes pad wrench, air‑tool oil, and 5" vinyl‑face backup pad
- Backed by Mirka’s industry‑leading 2+1‑year warranty
Warranty
Backed by Mirka’s 2+1‑year warranty. Register your tool within 30 days at www.mirka.com to activate the third year.
Technical Specifications
| Speed | 12,000 RPM |
| Orbit | 8mm (5/16") |
| Pad Size | 5" (125mm) |
| Weight | 1.7 lb (0.77 kg) |
| Noise Level | 74 dB |
| Work Pressure | 6.2 bar |
| Vibration Level | 2.6 m/s² |
| Air Consumption | 481 l/min |
| Dust System | Non‑vacuum |
About Us
SMSDistributors.com is an authorized Mirka Abrasives USA distributor with over 15 years of experience supplying professional‑grade sanding tools, abrasives, and dust extraction solutions for automotive, marine, woodworking, and industrial applications. We provide fast shipping, expert support, and reliable products trusted by professionals nationwide.
Category
Category: Mirka, MR Series, ROS Sanders, Pneumatic Sanders, 5" Random Orbital Sanders, Aggressive Sanding Tools, Non‑Vacuum Sanders