Chisels for stone: the shank must fit the hammer

Rebit identifies the shank type with a letter, and each letter corresponds to specific hammers.

The shank types

• A — BHV 12, BHV 16 and BHV 22
• D — BHV 26
• E — BHV 30
• Q — Atlas Copco RRD 37–57
• B — Frölich-Klupfel
• K and M — Pellegrini
• J and H — Böhler E115 and E13,9

The BHV hammers differ

Note that the BHV series does not have a single shank. BHV 12, 16 and 22 use type A, while BHV 26 and BHV 30 each have their own — type D and type E. The piston diameter follows the name: 12, 16, 26 and 30 mm.

So if the workshop has several BHV hammers of different sizes, the chisels cannot necessarily be moved between them.

Hand and machine tools are two separate ranges

Rebit divides its tools into six groups, and the split between hand and machine runs right through them:

• Hand tools for rough hewing
• Chisels and toothed hammers for hand use
• Chisels and bush hammers for machines
• Wedge-hole drills
• BHV hammers
• Other products

Hand chisels and machine chisels are not interchangeable

A hand chisel is struck with a hammer and has no shank to lock into anything. A machine chisel sits in a pneumatic hammer and is held there by its shank. The two are not interchangeable, even when the tip looks the same.

Wedge-hole drills are something else again: they drill the row of holes into which wedges are inserted when the block is to be split.

The chisels, the toothed and bush hammers and the hand tools for rough hewing are fitted with cemented carbide, which according to Rebit has been developed for working stone, primarily granite.

When you order

State which hammer the chisel is for, and the shank type if you know it. If you don't, the shank can be measured: the Rebit catalogue gives dimensions for each type, for example 12.5 x 45 mm for type A and 15.5 x 50 mm for type D.

The complete Rebit catalogue is available as a data sheet on the product page, with drawings of the shank types. If in doubt, call parts sales for construction and concrete with the hammer designation ready, or send your order using the spare parts form.