Object hardware COBRA PullBlock with bearing – new offer for 2020

Different quality demands are placed on architectural hardware than on standard interior door handles. Hardware in schools, hotels, or restaurants faces excessive loads and rougher handling. Do you take this into account in your projects?


By referring to the classification of door hardware according to ČSN EN 1906, functional and cost-effective options are only the Cobra hardware of classes 3 and 4. Common public office-type areas correspond to the requirements of category 3, while more demanding spaces such as schools, restaurants, sports stadiums, and swimming pools require door hardware of class 4.

How to meet the demands that public buildings place on door hardware? "The technically optimal solution is to utilize hardware with PullBloc bearings, which thanks to the design of the internal mechanism allows for long-term and indiscriminate loading," explains Jan Nečas, a specialist from Cobra. "For investors, it is important that thanks to the PullBloc door hardware, it is maintenance-free in the long term, and we guarantee the mechanism of the handle for 30 years."


For 2020, Cobra has significantly expanded its offer of bearing hardware – in object classes 3 and 4, the following are available:

• classic rose hardware Loft, Vision, and UFO
• new variants of Loft, Vision, and UFO with oval roses
• shield hardware 72 and 90mm including variants for dimple keys, cylinder inserts, and WC locks.

What are the main advantages of the Cobra PullBloc ® 4.1 bearing hardware?

• They correspond to object class 4; the materials and technology used can withstand long-term excessive loads
• The quality of the internal mechanism is tested for 1,000,000 opening cycles. For this reason, a 30-year warranty is provided on the hardware mechanism
• Ball bearings are present in both roses, ensuring long-term axial strength
• The polyamide sleeve, square rod, and handle form a single unit that rotates together – thereby reducing friction and significantly extending the lifespan of the entire system
• In all design variants, handles with a wider diameter of 22 mm are used, enhancing the solidity of the whole system
• Easy and quick assembly – the fixing protrusions on the rose prevent twisting, ensure stability, and facilitate installation. The assembly itself is very quick also thanks to the uniform mounting system through the entire thickness of the door.

"The entire sleeve forms a single unit with the square rod and handle, which reduces friction and prevents damage. An important feature of PullBloc® 4.1 is the fact that the hardened steel bearing is embedded in both roses, not just one," states Jan Nečas."The sleeve contains four strong return springs that create constant pressure and ensure a quiet and light return of the handle to its original position after being pressed."

More information about architectural bearing hardware can be found at www.matekliku.cz