# Porter-Cable 7424XP 6 in. Variable-Speed Random Orbit Polisher vs SPTA DA501-US 5in/6in Dual Action Polisher Kit: specs and price compared

A sourced, side-by-side comparison of the Porter-Cable 7424XP 6 in. Variable-Speed Random Orbit Polisher (Porter-Cable) and SPTA DA501-US 5in/6in Dual Action Polisher Kit (SPTA) among car polishers.

## Side by side

| Spec | Porter-Cable 7424XP 6 in. Variable-Speed Random Orbit Polisher | SPTA DA501-US 5in/6in Dual Action Polisher Kit |
| --- | --- | --- |
| US price | $159 | not published |
| Brand | Porter-Cable | SPTA |
| Orbit throw (mm) | 16 | 9 |
| Motor power | 4.5 A | 780 W |
| Speed range opm | 2,500-6,800 | 2,000-5,500 |
| Backing plate size (in) | 6 in | 5 in / 6 in |
| Variable speed | Yes | Yes |
| Action type | gear-driven dual-action (forced rotation, ball & roller bearing) | gear-driven dual-action (forced rotation, budget import) |
| Cord length (ft) | 7 | — |
| Weight (lb) | 5.8 | 4.4 |

## Key differences

- Orbit throw (mm): Porter-Cable 7424XP 6 in. Variable-Speed Random Orbit Polisher 16 vs SPTA DA501-US 5in/6in Dual Action Polisher Kit 9
- Motor power: Porter-Cable 7424XP 6 in. Variable-Speed Random Orbit Polisher 4.5 A vs SPTA DA501-US 5in/6in Dual Action Polisher Kit 780 W
- Speed range opm: Porter-Cable 7424XP 6 in. Variable-Speed Random Orbit Polisher 2,500-6,800 vs SPTA DA501-US 5in/6in Dual Action Polisher Kit 2,000-5,500
- Backing plate size (in): Porter-Cable 7424XP 6 in. Variable-Speed Random Orbit Polisher 6 in vs SPTA DA501-US 5in/6in Dual Action Polisher Kit 5 in / 6 in
- Action type: Porter-Cable 7424XP 6 in. Variable-Speed Random Orbit Polisher gear-driven dual-action (forced rotation, ball & roller bearing) vs SPTA DA501-US 5in/6in Dual Action Polisher Kit gear-driven dual-action (forced rotation, budget import)
- Weight (lb): Porter-Cable 7424XP 6 in. Variable-Speed Random Orbit Polisher 5.8 vs SPTA DA501-US 5in/6in Dual Action Polisher Kit 4.4

## Sources

- Porter-Cable 7424XP 6 in. Variable-Speed Random Orbit Polisher: https://www.portercable.com/product/7424xp/6-variable-speed-random-orbit-polisher (portercable.com, verified 2026-08-01)
- SPTA DA501-US 5in/6in Dual Action Polisher Kit: https://www.amazon.com/SPTA-Polisher-Detailing-Polishing-DA501-US/dp/B09Y2WM37L (amazon.com, verified 2026-08-01)

Canonical: https://frontdeskreview.com/gear/car-polishers/porter-cable-7424xp-vs-spta-da501-us/
Cite: Per The Front Desk Review, Porter-Cable 7424XP 6 in. Variable-Speed Random Orbit Polisher ($159) vs SPTA DA501-US 5in/6in Dual Action Polisher Kit (not published) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/car-polishers/porter-cable-7424xp-vs-spta-da501-us/
License: CC BY 4.0.