Probe arms

NOTE: It is advised that probe arms should be changed using the autochange rack. Manual probe arm change should only be used for the initial connection. The probe arm should be exchanged using the autochange rack before an application.

Specifications

Four types of probe arms are available for the PHS1 system.

Probe arm

Description

HE 750

Probe arm with integral carbon fibre extension bar and M8 bush to give 750 mm total reach with Renishaw TP20 touch-trigger probe.

HE 500

Probe arm with integral carbon fibre extension bar and M8 bush to give 500 mm total reach with Renishaw TP20 touch-trigger probe.

HE 330

Probe arm with integral carbon fibre extension bar and M8 bush to give 330 mm total reach with Renishaw TP20 touch-trigger probe.

HA M

Probe arm with multiwire autojoint adaptor. Suitable for Renishaw multiwire probes amd extensions.

HA 8

Probe arm with M8 bush.

The following figure gives dimensions with different probe arm assemblies. All dimensions are in millimetres.

PHS1 probe arm assembly dimensions 

Use of extensions on PHS1 system

The PHS1 has a range of extensions and adaptors.  For the best system accuracy, bear in mind the following guidelines:

  • Always use the probe at the minimum radius - only use extensions when necessary and then the shortest needed to reach a feature
  • If an extension is necessary, use the lightest probe and extension combination

  
  
  

Preferred combinations:

Extension / adaptor

Radius to probe tip with TP2 or TP20 probe and 30 mm stylus

HA8

114 mm

HA8 + PEL1

164 mm

HA8 + PEL2

214 mm

HA8 + PEL3

314 mm

HE330

330 mm

HE500

500 mm

HE750

750 mm

NOTE: When using extensions it is recommended that two C-spanners should be used to fit the probe.