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Extension bars - M8 to M8 type
A family of aluminium (and carbon fibre options) extension bars

Extension bars with M8 to M8 threads for use with 2-wire touch-trigger probes (such as TP20) to extend the reach of the CMM.
Extension bars - M8 to M8 type
PEL1 | PEL2 | PEL3 | PEL4 | |
Material | Aluminium | Aluminium | Aluminium | Aluminium |
Effective length | 50 mm (1.97 in) | 100 mm (3.94 in) | 200 mm (7.87 in) | 300 mm (11.81 in) |
D1 | Ø13 mm (0.51 in) | Ø18 mm (0.71 in) | Ø18 mm (0.71 in) | See note below |
D2 | Ø13 mm (0.51 in) | Ø13 mm (0.51 in) | Ø13 mm (0.51 in) | Ø13 mm (0.51 in) |
Weight | 22 g (0.78 oz) | 43 g (1.52 oz) | 80 g (2.82 oz) | 141 g (4.97 oz) |
Carbon fibre M8 - M8 extension bars
PECF | PECF2 | PECF3 | PECF4 | |
Material | Carbon fibre | Carbon fibre | Carbon fibre | Carbon fibre |
Effective length | 50 mm (1.97 in) | 100 mm (3.94 in) | 200 mm (7.87 in) | 350 mm (13.78 in) |
D1 | Ø13 mm (0.51 in) | Ø13 mm (0.51 in) | Ø13 mm (0.51 in) | Ø13 mm (0.51 in) |
D2 | Ø13 mm (0.51 in) | Ø13 mm (0.51 in) | Ø13 mm (0.51 in) | Ø13 mm (0.51 in) |
Weight | 20 g (0.71 oz) | 26 g (0.92 oz) | 34 g (1.20 oz) | 57 g (2.01 oz) |
NOTE:
D1 (a) | Ø24.95 mm (0.98 in) |
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D1 (b) | Ø17.8 mm (0.70 in) |