Gun Distance

Content trust and applicability

Author
TD Engineering Team
Publisher
Shanghai Tudou Technology Co., Ltd. | Shanghai, China
Scope

Reference definitions for paint-cell terminology used in feasibility reviews, equipment selection, process setup, and production planning.

Best used for

Best used to create shared vocabulary across engineering, purchasing, operations, integrators, and external suppliers.

Use with caution

Definitions do not replace equipment datasheets, coating TDS/SDS documents, or site-specific compliance review.

Evidence basis

Compiled from TD engineering terminology, project scoping language, and equipment-integration workflows.

Gun distance is the spacing between the spray gun and target surface during application. Optimal distance (typically 150-300mm) varies by equipment and coating type, affecting atomization, transfer efficiency, and finish quality.

Why it matters in paint cells

  • •Critical for proper atomization and film build
  • •Too close causes runs; too far causes dry spray
  • •Must be maintained across complex geometries

Distance optimization factors

  • •Spray technology: HVLP typically needs closer distance than conventional
  • •Paint viscosity: Higher viscosity may need closer distance
  • •Atomization air pressure: Higher pressure allows greater distance
  • •Part geometry: Complex shapes require adaptive distance control

Related resources

Configure your paint cell