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

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