Overview
The Devilbiss QS-4016 air motor assembly is a proven pneumatic motor component engineered for industrial spray systems and coating equipment. As a core component for both the QS-5003 and QS-5012 gear drive air motors, the QS-4016 delivers reliable torque and consistent performance in high-demand spray applications. This used unit maintains full functionality for paint spraying, powder coating, and similar industrial pneumatic operations.
Key Features
- Direct-drive vane motor design for efficient pneumatic power conversion
- Compatible with QS-5003 and QS-5012 gear drive systems
- Integrated shaft, rotor, and end-cap assembly for quick installation
- Oil-sealed bearing design for extended service life
- Proven performance in spray coating and agitation applications
Technical Specifications
The QS-4016 air motor uses a four-vane rotary design with sealed bearings and precision-machined components. Critical replacement parts include the rotor and shaft assembly (QS-442), front plate (QS-333), body (QS-335), end cap (QS-190), and oil seal (QS-336). The assembly weighs approximately 0.5 lbs and requires standard 1/4-28 machine screws for mounting.
Typical Applications
- Airless paint sprayers and spray booths
- Pneumatic agitator drives for fluid circulation
- Powder coating equipment motors
- Industrial mixing and stirring systems
- Portable spray equipment platforms
Compatibility & Replacements
Compatible With
- QS-5003 gear drive air motor systems
- QS-5012 gear drive air motor systems
- DeVilbiss spray equipment assemblies
- Standard 1/4-inch SAE pneumatic air supply lines
Replaces / Drop-In Replacement For
Verify with your system documentation or contact technical support to confirm this unit matches your existing QS-5003 or QS-5012 assembly configuration.
Works With
- KK-5001-1 air motor repair kit components
- DeVilbiss replacement part series (QS-series vanes, bearings, seals, plates)
- Standard pneumatic regulators and moisture traps




