General
Pipe diameter	19-21 mm
Thread	M20
Fastening element	M6
Material	Steel
Approval	E30 to E90
Norm	DIN 4102 Part 12

The OBO Bettermann spacing bracket type 733 21 G is designed for the secure fastening of cables, conduits, and pipe systems to walls, floors, or ceilings. The product enables variable spacing adjustment from the mounting surface by using a freely cut-to-length threaded rod. The bracket is designed for pipes and cables with a diameter of 19 to 21 mm and features a long slot for mounting with M20 thread. The screw material is made of steel.

Applications

The spacing bracket is designed for use in installation systems, particularly in areas where a defined spacing of conduits and pipes from the mounting surface is required. It is suitable for use in industrial, commercial, and residential buildings where secure and durable fastening of cables and pipes is necessary. The bracket is tested and approved for fire protection systems of classes E30 to E90 according to DIN 4102 Part 12, enabling its use in fire safety installations.

Functions and Equipment in Detail

The bracket offers flexible spacing adjustment achieved by selecting the individual length of the threaded rod. The long slot in the bracket body allows precise positioning and adaptation to different mounting conditions. The construction ensures a stable and load-bearing fastening that remains secure even under mechanical stress. The steel screws provide high strength and durability.

Technology Explained Simply

The spacing bracket operates on the principle of a tension clamp with an integrated threaded connection. The threaded rod is screwed into the long slot, enabling variable spacing adjustment. Fastening to the mounting surface is achieved using M6 screws, which are installed into the respective substrate (e.g. concrete, masonry).

Compatibility and Accessories

The use of the specified fastening elements is necessary to securely mount the bracket to the substrate. Mounting variants and approval data are documented in the suitability certificates.

Installation and Mounting

Installation is carried out by screwing the threaded rod into the long slot of the bracket and then securing it to the substrate using M6 screws. The length of the threaded rod can be freely chosen to set the desired spacing from the substrate. The bracket is positioned so that the pipe or cable to be fastened is securely held. Installation does not require special tools, although the use of a screwdriver or electric drill is necessary for fastening to the substrate.

Operational Advantages

The spacing bracket provides a flexible and adaptable fastening solution that can be adjusted to different mounting situations. The use of steel as screw material ensures high mechanical strength and durability. Approval for fire protection systems according to DIN 4102 Part 12 enables use in fire safety installations, increasing application versatility. Simple installation and variable spacing adjustment facilitate installation in complex system structures.