Chain knocker with hardened chains, 22mm T-Nut (7/8")

The chain knocker from rak with a 22mm T-Nut for appropriate drain cleaning cables is an absolute professional drain cleaning tool. The chains of the 22mm version are made of hardened steel, which means less wear and tear and more cleaning power. When the drain cleaning cable starts to rotate, the centrifugal forces cause the chains to contact the wall of the pipe and remove deposits quickly and effectively. The sturdy chains are available in smooth design or as cam chains (with spikes). Compared to a sanitary version such as the ROTHENBERGER or ROWO chain heads, the rak chain knocker has a longer overall length as well as longer and hardened chains. In addition, the chain links are shaped in such a way that the chain lies evenly and the links are not offset from each other. This makes drain cleaning jobs even more effective, as a larger part of the chain works on the pipe wall. This saves you valuable time! Due to the longer chains, you can also easily clean pipes with a larger diameter up to 150mm. To keep the 225mm long drain cleaning tool as flexible as possible, the spring wire between the T-Nut coupling and the head of the tool is wound wide. This results in a higher curve mobility.

Chain heads are an indispensable tool for every end pipe cleaning in pipes. The smooth chains are ideal for stoneware and plastic pipes, the cam chains are designed for cast iron pipes and concrete pipes. The sturdy chains are welded to the head and to the coupling and have 11 chain links. They can be completely replaced (re-welded), but individual chain links can also be replaced. This guarantees a long service life of the chain knocker. The chains are available from us as spare parts. The chain knockers should always be used only with reinforced drain cleaning cables (S-spirals, S-SMK-spirals).

Technical data of the chain knocker with 22mm T-Nut from rak:

• Maximum diameter: 230mm, length: 225mm
• Hardened steel chains
• Chains: 2, 3 or 4 smooth chains or 2, 3 or 4 cam chains (with spikes)
• Working ranges: 70-150mm, max. 200mm
• Coupling: bevelled 22mm T-Nut coupling