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Silver pneumatic rotary buffer with 5-inch hook-and-loop pad and rear exhaust

Dynabrade Products

Dynabrade Products 51430 Air Buffer 5 In Pad 3200 rpm

SKU CH-3MYW-0VJ9E

A 5-inch rotary air buffer running at 3200 rpm with 0.4 hp for heavy-duty polishing

  • Rotary polishing action delivers consistent finish on 5 in pads
  • Fixed 3200 rpm speed maintains steady material removal rate
  • 4 hp motor handles heavy-duty polishing tasks
  • Rear exhaust directs airflow away from work surface
  • Lightweight 1.8 lb design reduces operator fatigue during extended use

Dynabrade 51430 Air Buffer for rotary polishing

The Dynabrade 51430 is a pneumatic rotary polisher built for heavy-duty surface finishing on automotive and industrial jobs. It runs on a 0.4 hp motor at a fixed 3,200 rpm and accepts 4 in to 5 in hook-and-loop pads. The offset grip and rear exhaust keep the tool balanced during extended use. It weighs 1.8 lb and measures 9 3/4 in long.

Verify compressor output

Your air supply must deliver 24 cfm at 90 psi to run this buffer at full speed. The tool requires a 1/4 in NPT air inlet and a minimum 3/8 in hose bore; smaller fittings will starve the motor. Confirm the spindle thread is 3/8 in‑24 to match existing backing pads. No electrical connection is needed.

Replaces lighter orbital polishers when cutting

Step up from dual-action machines when you need aggressive material removal on clear coat or gel coat. The fixed‑speed rotary action cuts faster but demands operator skill to avoid holograms or burn‑through. Not suited for detail work on tight curves or for users who prefer variable‑speed control. The jump is worth it on large, flat panels where throughput outweighs finesse.

Highlights

  • Rotary polishing action delivers consistent finish on 5 in pads
  • Fixed 3200 rpm speed maintains steady material removal rate
  • 4 hp motor handles heavy-duty polishing tasks
  • Rear exhaust directs airflow away from work surface
  • Lightweight 1.8 lb design reduces operator fatigue during extended use

Specifications

BrandDYNABRADE

Questions about this item

What comes in the box with the Dynabrade 51430 air buffer and what must be purchased separately?

The buffer includes a 5 in hook-and-loop pad; you must supply compressed air at 90 psi, a 3/8 in minimum hose, 1/4 in NPT fitting and 24 cfm flow.

How do I choose between the fixed 3200 rpm speed and other models?

This tool runs at a single 3200 rpm setting with 0.4 hp for heavy-duty rotary polishing; select it when a constant speed matches the compound and surface you use.

What does the 3200 rpm figure mean when the tool is running on my compressor?

At 90 psi and 24 cfm the motor delivers 3200 rpm at the 5 in pad, giving consistent rotary action for polishing or buffing without speed drop-off.

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