High strength bar for geotechnical applications.
FEATURES
The unique 3-leaf expansion unit has exclusive features that ensure positive anchorage under the most arduous conditions.
The expansion unit, which is available as a ‘bail type’ unit, is a 3-leafed mechanical anchor which conforms to the hole diameter. This feature ensures a more even load distribution between the anchor and the rock at the anchor point.
The serrations on the shell are rounded off. This is done to reduce point loading at the contact point between the shell and the surface of the borehole. This reduces crushing of the rock and broaching of the hole, thus taking maximum advantage of the strength of the undisturbed rock at the anchor point.
MATERIALS
SABS 936/937 – 1969 SG iron castings grade 42
Bail: commercial-quality mild steel.
NOTE
Expansion units are normally supplied with ISO metric threads or DIN 405 threads. Other threads can be supplied for special orders.
Left-hand expansion units are available for left-hand threaded rock studs.
Expansion units can be supplied only as bail type.
SPECIFICATIONS
Description
Min. hole size
Max. hole size
32mm
33mm
35mm
35mm
36mm
38mm
38mm
39mm
45mm
40mm
41mm
47mm
43mm
44mm
50mm
60mm
61mm
68mm
76mm
77mm
84mm
89mm
90mm
99mm