About us

Schaaf – The Specialists for Hydraulic High-Pressure Technology Superior and Flexible Since 40 years Schaaf GmbH & Co. KG is involved in the development and manufacturing of hydraulic high-pressure tools and hydraulic high-pressure components. The worldwide active company lives of its innovative solutions and convinces with excellent quality.

Schaaf employs about 130 employees at its headquarters in Erkelenz. Since the company was founded in 1977, everything at Schaaf is about hydraulic high-pressure technology. First it was just about screw tensioning devises, hydraulic nuts and its accessories.

Today a variety of high-pressure tools are part of the product range for the whole industry. The products from Schaaf find applications in all areas of engineering in the steel industry, civil engineering and structural engineering, in the chemical industry, at power plants as well as in the off-shore and on-shore technology.

Products and services

At Schaaf the customer can count on all products being of the highest quality. An extensive quality management which includes all company parties ensures that the quality at Schaaf is systematically planned, manufactured and checked.

Schaaf GmbH & Co KG is specialized in the development and manufacturing of: Bolt Tensioners Hydraulic nuts MSN Multiple Stud Nuts ExpaTen bolts ExpaTen 2 GripLoc – connection for shafts and axles ExpaHub Oil press fits Hydraulic high-pressure pumps Hydraulic high-pressure accessory Control and automatic control systems MDS Mounting Documentation System TTG Tensioned Thread Geometry TSI Tool Service Indicator / TMS Tool Management System  


A powerful and compact connection
Shaft connections for high performances

The GripLoc system is capable of safely transferring high forces (torques and axial forces) in the smallest installation space. Furthermore, the system is easily and rapidly installed and just as easy to disassemble again even after prolonged and intensive stress.

GripLoc operates according to the principle of a radial shrinkage connection, but without the serious disadvantages of this type of connection.

Further reading

Multiple Stud Nut

The economic multiple bolting for axial bolt tensioning

The innovative ambition of Schaaf is to develop distinguished quality, but also offer it cost-efficiently. The solution, which the market demanded is: MSN – Multiple Stud Nut.

The mounting is imaginable easy and needs no additional accessories. MSN achieves an axial bolt connection with less diffusion. With the stud bolts integrated into the nut body for force launching, the MSN is screwed onto the bolt, which has to be tensioned.

Further reading


ExpaTen Bolts –
Expansion and pretensioning bring safety and cost reduction

Schaaf has revolutionised removable flange connections of drive shafts with the ExpaTen Bolt. Due to the patented technology of ExpaTen with radial expansion and axial pretensioning, which guarantees 100 % form and friction fit, high torques are transferred free from backlash and cost reduction as well as safety increase are achieved.

Further reading

Bruesseler Allee 22
41812 Erkelenz

Phone: +49 2431 97770-0
Fax: +49 2431 97770-77
Internet: www.schaaf-gmbh.com
E-mail: Send message

Contact person

Ursula Spitz
Secretary of the Executive Board
Phone: +49 2431 97770-662
E-mail: Send message

SCHAAF (Taicang) Co. Ltd.
No.8 North Loujiang Road
215400 Taicang, Jiangsu Province
P. R. China

Phone: +86 512 81608060
Fax: +86 512 81608061
Internet: www.schaaf.cn
E-mail: Send message

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