Shank Adapter Selection Guide for Rock Drills

The shank adapter is the critical interface between the rock drill and the drill string. Selecting the wrong shank adapter leads to energy loss, premature wear, and potential equipment damage.

What Is a Shank Adapter?

The shank adapter transmits both rotation and percussion energy from the rock drill to the drill rod. It must be precisely matched to both the drill and the rod system being used.

Thread Types

Common thread types include T38, T45, T51, R32, R38, and R51. The correct thread depends on the drill rod diameter and the rock conditions. Harder rock generally requires larger thread sizes for better energy transfer.

Shank Dimensions

The shank must match the chuck dimensions of the rock drill exactly. Using an incorrect shank size causes rapid wear of both the adapter and the chuck bushing.

Material Quality

High-quality shank adapters are made from alloy steel with precise heat treatment. Inferior materials lead to premature fatigue cracking and sudden failure during drilling.

Nova Rock Drill Shank Adapters

We supply shank adapters for all major rock drill brands including Epiroc, Sandvik, Furukawa, Montabert, and Ingersoll Rand. All adapters are manufactured to OEM specifications with full quality control.