Mitutoyo 12AAC735 Cmm Needle Stylus 10mm Ball Zirconia

Product Description

The MITUTOYO 12AAC735 is a needle-style CMM stylus designed for coordinate measuring machine probing applications requiring precise point contact. The stylus features a zirconia ball tip measuring 10 mm in diameter mounted on an aluminum stem with a 1.20 mm stem diameter. Overall length is 45.6 mm with an effective working length of 37.70 mm (approximately 1.48 inches). The horizontal mounting orientation suits a range of CMM probe configurations. At 0.05 pounds, this lightweight stylus minimizes bending forces during measurement cycles, supporting repeatable contact accuracy on the CMM quill.

This stylus is intended for use in dimensional inspection environments where a needle profile is required to access tight features, bores, or narrow slots that a standard ball stylus cannot reach. It is installed and used by CMM programmers, quality technicians, and metrology lab personnel working in manufacturing inspection, tool and die, aerospace, and machined-parts verification settings. The zirconia point material provides wear resistance suitable for repeated contact cycles on ferrous and non-ferrous workpiece surfaces.

Key Features

• 10 mm zirconia ball tip for wear-resistant point contact
• Needle stylus profile enables access to confined features and narrow geometry
• 1.20 mm aluminum stem reduces mass and minimizes deflection
• 37.70 mm effective working length provides reach into recessed surfaces
• 45.6 mm overall length suits standard CMM probe rack configurations
• Horizontal mounting orientation for compatible CMM probe heads

Compatibility

Designed as an OEM-style replacement or direct-fit stylus for CMM probe systems accepting horizontally mounted needle styli with standard threaded stem connections.

Installation Notes

Installation is performed by CMM technicians or metrology personnel. Power down or pause the CMM and retract the probe head to a safe position before changing styli. Use the appropriate stylus wrench and avoid applying lateral force to the stem during installation to prevent bending. Re-qualify the stylus on the reference sphere after installation to establish an accurate tip compensation value before beginning measurement routines.