The Mirka PROS 650NV 6 Inch 5 mm Non-Vacuum Pneumatic Random Orbital Sander is a professional air-powered finishing sander built for consistent surface prep and finish sanding. This is a pneumatic random orbital sander designed for sanding and finish preparation. Model Number MRP-650NV. If you want a light, easy-to-control sander for production work, this setup is aimed at exactly that kind of use.

The core setup is straightforward and job-focused: a 6 inch pad for good surface coverage and a 5 mm orbit that balances stock removal with finish quality. That makes it a practical choice when you need to move across larger panels without stepping up to something too aggressive. For bodywork, wood finishing, composites, and general prep work, that orbit size lands in a useful middle ground.

Mirka built the PROS series around operator comfort, and that matters more than it sounds on a sander. The lightweight composite construction helps keep the tool manageable through longer shifts, while the ergonomic shape supports controlled one- or two-handed use. On a random orbital sander, comfort is not just about feel. Better balance usually means steadier pressure, cleaner scratch patterns, and less fatigue-driven sloppiness near the end of the day.

Another detail worth paying attention to is the shroud system with brake seal. That setup is there to help prevent the backing pad from free spinning. In real use, that gives the Mirka PROS 650NV 6 Inch 5 mm Non-Vacuum Pneumatic Random Orbital Sander a more controlled feel when the pad contacts the surface, especially on delicate finish work where a sudden grab or uncontrolled spin can leave swirls or pigtails.

This version is the non-vacuum model, so it is the right fit for users who do not need onboard dust extraction through the tool body. That can make sense in dedicated air-tool setups, sanding stations, or shops where process and cleanup are handled separately. It also keeps the configuration simple for operators who just want a dependable pneumatic sander without adding vacuum-specific hardware to the tool itself.

The included premium vinyl-faced backing pad for pressure-sensitive adhesive abrasive discs matters because it defines how the tool is meant to work in your sanding system. If your workflow is built around PSA abrasives, this saves setup hassle and keeps the tool aligned with that process right out of the box. Mirka also includes a wrench and bottle of oil, which tells you this is a shop-ready pneumatic tool, not a stripped-down bare unit.

Who should buy it? Pros who spend real time sanding. That includes auto body and paint prep, woodworking finish sanding, composite surface prep, and general shop work where a pneumatic sander still makes more sense than a cordless or electric option. If you already run air in the shop and want a light 6 inch random orbital sander with a proven ergonomic design, this one makes a lot of sense.

Mirka PROS 650NV Keeps It Simple in a Good Way

The Mirka PROS 650NV 6 Inch 5 mm Non-Vacuum Pneumatic Random Orbital Sander is a smart pick for shops that want a light, controlled air sander focused on real finish work instead of extra complexity.

• Who it's for: Pros and serious users doing finish sanding, prep work, bodywork, and production sanding with an air system already in place.
• Why it stands out: The low weight, ergonomic body, 5 mm orbit, and controlled pad action make it easier to run all day and easier to keep clean results on the surface.
• Worth knowing: This is the non-vacuum version, so make sure that matches your setup. It also ships with a PSA backup pad, which is great if that is already your abrasive system.

• Is this a vacuum-ready sander? No. The MRP-650NV is the non-vacuum version.
• What size pad does it use? It uses a 6 inch pad setup.
• What orbit size does it have? This model has a 5 mm orbit.
• Is it electric or pneumatic? It is a pneumatic random orbital sander.