Arc Spray Wire Diameter: Check the Whole Feed Path

Learn what to check when specifying arc spray wire diameter: drive rollers, guides, contact tips and the approved gun configuration, not just the wire spool.

Balaji Udyog

9/27/20261 min read

Wire diameter is a system compatibility detail. A wire may be available in a catalogue without being ready to use in every gun configuration. Balaji Udyog lists several thermal spray wire sizes; buyers should confirm the complete feed path for the selected equipment.

Identify the installed parts

The drive arrangement, guides and contact components must suit the wire. Ask for the equipment model, current diameter setup and relevant part references. Photographs of an existing machine can help, but measurements and manual references are needed where similar-looking components differ.

Include the material designation

Two wires with the same diameter may have different mechanical or coating characteristics. Specify the material grade, intended coating and package format as well as the nominal size. Keep material identification with the spool or package so that a changeover does not create a traceability gap.

Plan a controlled changeover

Before changing wire size, obtain the approved conversion list and procedure. Confirm which components are replaced, which checks are required and how the coating process is re-established. Avoid treating a diameter change as a simple substitution followed by guessed operating settings.

Useful details for a spares enquiry

Gun and wire-drive model, including any serial information.
Current and proposed wire diameter and material.
Guide, roller and contact-tip part numbers.
Clear photographs of the relevant assemblies.

Can a smaller wire be run through larger guides?

Only if that combination is explicitly approved for the equipment. Apparent physical clearance is not evidence of a suitable feed path or reliable electrical contact.

Explore Arc spray equipment from Balaji Udyog, Jodhpur. Send your application details for a technical discussion and equipment quotation.