HH-A-T2.5 / HH-AS-T2.5 Automatic 2.5° Probe Heads

HH-A-T2.5 and HH-AS-T2.5 - A new degree of freedom

The HH-A-T2.5 is capable of indexing in 2.5° increments and can achieve 12,240 unique positions.

The head is fitted with a kinematic joint (TKJ) which can be connected to a Multiwire to give multi sensor support.

The TKJ can be changed either manually without the need for requalification or automatically with the HR-R tool changer.

The HH-A-2.5 range of probe heads feature a number of new innovations including an fully embedded controller, capacitive crash protection and the all new heavy duty kinematic joint.

All of the probe heads in the range benefit from a completely redesigned drive system including a Hirth Gear for accurate positioning of the probe. The new design delivers the advantage of a high degree of indexable positions and very high rotational torque.

The HH-A-2.5 can either be mounted on the CMM with a shank or flange, alternatively the HH-AS8-2.5 can be mounted on any CMM with an 80mm ram.


HH-A-H2.5 Probe Head Overview

About you
About your company
  • Indexing in steps of 2.5° - 12,240 positions for highest flexibility
  • Extensions up to 450mm available
  • Extremely high rotation torque - 1.4 NM

HH-A-T2.5 HH-AS-T2.5
 Indexing Angle 2.5°
 A axis ± 105°
 B axis ± 180°
 Rotation speed 90° in 2.5 s
 Positioning Repeatability

0.5µm at 100mm from the center of A axis rotation

 Max recommended drive torque 1.4nm
 Max. extension length 450 mm
 Weight 1600g 1650g
 Head mounting Shank or Flange Direct to Ram
 Probe mounting TKJ / M8
 Head controller

HH-C-V2.0 / HH-CA-V2.0 (with HR-R Probe Changer)

Probes & Sensors catalogue
2.5° Probe Heads Brochure
Styli and Accessories Catalogue


HxGN LIVE, Hexagon’s annual digital solutions conference, where the physical world converges with the digital. Learn more about the conference and secure your place...