maintenance Dortmund 2016 - Messe Westfalenhallen Dortmund, 24 - 25 February 2016

SCHAAF GmbH & Co.KG

SCHAAF GmbH & Co.KG

Stand G12

Contact details

41812 Erkelenz
Deutschland
www.schaaf-gmbh.com

Schaaf – The Specialists for Hydraulic High-Pressure Tools
Superior and Flexible

For more than 35 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 employed about 120 employees at its headquarters in Erkelenz in 2012.

Since the company was founded in 1977, everything at Schaaf is about hydraulic highpressure 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.

The advantages of the hydraulic pretension mechanism tools come to use in all field of application. With the screw tensioning devises and hydraulic nuts, connections can be tightened with the highest degree of accuracy. During pure axial pretension force creation no torsion force occurs, the screws are not subjected to force and twisting does not occur. The list of further points, which speaks for an axial screw pretension, is very long. It contains a significant plus for safety and an ease to work with hydraulic systems.

Development Course

The development of the company went extremely fast in the past 10 years. Schaaf expanded the facilities of the production plant in this time frame by a factor of 20, the construction was increased by a factor of 3 and the amount of employees went from 6 to 120 from 1990 to beginning of 2012, which means it increased ten folded. The production runs 3 shifts on six days per week. The company has a vertical range of manufacture that almost reaches 100 % of the mark.

An important cornerstone of the company philosophy is the principle idea that a stable company politic produces trust. Management counts on the managing director Ralf Köllges, MBA to achieve consistent quality and a continuous improvement process.

Additional products like ExpaTen Bolts provide easy mounting and dismounting of drive shafts with flanges, while Griploc is doing the same for flangeless shafts. Both can transmit high end values of torque.

MSN Multiple Stud Nut is a new product range which generates axial pretensioning without hydraulic – instead it is using torque on many smaller bolts located round on the pcd of the nut.

Deliver Quality

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 planed, 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

Products

  • GripLoc

    A powerful and compact connection
    Shaft connections for high performances

    Whether between the ship’s propulsion and propeller or in highly stressed drive trains of steam turbines, in reciprocating compressors or wind power plants: the requirements are set very high, since the connections must often cope with high dynamic and changing torsional forces in addition to partly axial forces. It is precisely to this demanding requirement profile of shaft and axle connections that the experienced specialists for hydraulic high pressure tools from Schaaf have tailored the new GripLoc coupling.

    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.

    Two bushes, an internal tapered bush in tough, high-strength steel in conjunction with the internal counterpart with a conical internal drilling reliably guarantee the non-positive connection. In order to displace the two bushes against one another and release the connection again even after a long period of use, GripLoc operates with an integrated and removable hydraulic nut and SafeLoc element.

    The working principle of the system is simple, but extremely efficient. GripLoc is pushed centrally on to the shafts to be connected. The outer bush is slightly widened with the aid of the hydraulics. A closed liquid film results between the internal and external bush.
    During the second stage, the external bush is pushed with defined force over the internal bush with the aid of the high-pressure hydraulic nut. The specialists from Schaaf have pre-estimated beforehand the precise forces and the advancement distances of the external bush for optimum radial compression. By releasing the pressure from the external bush, the latter shrinks and the shafts to be connected are securely connected to each other by the frictional engagement.

    The smallest dimensions of the entire coupling are rendered feasible by the friction coefficient increase developed by Schaaf, which functions like micro-toothing. With the friction coefficient increase, GripLoc achieves friction coefficients of up to μ = 0.7. In comparison to standard friction coefficients of μ = 0.14, this means that for the same structural size, the system is capable of transferring markedly higher forces, or it allows a considerably compacter construction.

    This connection remains securely maintained until released again. Only the same tools as for establishment of the connection are required for release. Owing to the new construction of GripLoc, the system can be assembled and disassembled rapidly and as often as desired without any wear, all without any loss of the excellent frictional engagement properties.

    All systems are subject to strict quality control and are tested among other aspects for material quality, dimensional stability, function and safety under pressure. Material test certificates in addition to attestations and factory test certificates of the renowned acceptance associations are available on request.

    SCHAAF_05-00-GripLoc_GB-0b1480.pdf

    http://schaaf-gmbh.com/englisch/produkt/pg35_0.htm...

  • ExpaTen

    Safety plus ring torque transmission
    Easy detachable and reusable bolts for
    flange connections which are subject to high stress

    Schaaf, Erkelenz, is leading the way with ExpaTen bolts in order to revolutionize detachable flange connections of propulsion shafts of the shipbuilding industry. Standard bolts usually get stuck after a while in a flange and can only be loosened under great effort. This is where ExpaTen comes in. Not only are the bolts 100% non-positive and form fitting, which allows to transfers high torque, but even after high stress they can be easily disassembled and reused. The bending and rotating resistant connection absorbed shock like changes of revolutions, torque as well as turning direction dependently. The bolts can be installed even in small areas due to the compact construction. The system is made of heat treated steel, which is a safety plus during torque transfer. The safety factor in comparison to regular screws is 5.

    ExpaTen is easy to handle since all tools and hydraulic high-pressure pumps for assembly and disassembly are adjusted to the system. ExpaTen lessens the waiting period for maintenance and repair work and significantly lowers cost. ExpaTen is certified by well-known buyers.

    SCHAAF_04-00-ExpaTen_GB.pdf

    http://schaaf-gmbh.com/englisch/produkt/pg26_0.htm

  • TSI - Tool Service Indicator

    Tool-Service-Indicator (TSI) and Tool-Management-System (TMS).
    All-In-One Safety and Maintenance Analysis

    For decades Schaaf has focused on ensuring an optimum of quality and efficiency for its products and components. Constant improvement and optimisation thus allow for an extremely reliable and industry-specific applicability of each individual product. The permissible period of application in order to be able to plan timely maintenance and any potential tool replacements as well as to avoid costly malfunctions and failures, is one of the customer’s demands.
    For this reason, Schaaf developed the Tool-Service-Indicator (TSI). This upgrade, capable of being integrated into all hydraulic components, displays the maintenance status of up to 30 different components with an easy to understand traffic light system on the tool or the high-pressure generator.
    The Tool-Service-Indicator (TSI), therefore, offers optimal protection for employees as well as interruption-free operational progress.
    Expandable through the Tool-Management-System (TMS), the inventory of Schaaf products is documented and evaluated on a server, which includes information about lifetime, charge cycle and maintenance phases. Furthermore, the various load changes and pressures, etc. are documented.
    Therefore, the TSI / TMS combination is an optional, yet essential factor for safety for people and the machine and guarantees efficient work because it minimises downtime.

    http://schaaf-gmbh.com/englisch/produkt/index.htm

  • SSV - Bolt Tensioners

    In addition to a number of standardized Bolt Tensioners and Hydraulic Nuts, SCHAAF has already delivered thousands of customized axial Bolt Tensioners. The Design on Demand CAD system allows to realize customer solutions very
    quickly. Based on axial pre-tensioning technics, a number of patented, specialized solutions have been developed during the last years. Bolt Tensioners, Hydraulic Nuts and ExpaTen, as well as the A-Loc and EcoRolls, both developed
    especially for rolling mills, all represent a 100% system solution with SCHAAF’s accessories such as high-pressure hoses and high-pressure generators.

    SCHAAF_02-00-Bolt_Tensioning_GB.pdf

    http://schaaf-gmbh.com/englisch/produkt/ssv-1.htm

  • HM - Hydraulic Nuts

    In addition to a number of standardized Bolt Tensioners and Hydraulic Nuts, SCHAAF has already delivered thousands of customized axial Bolt Tensioners. The Design on Demand CAD system allows to realize customer solutions very
    quickly. Based on axial pre-tensioning technics, a number of patented, specialized solutions have been developed during the last years. Bolt Tensioners, Hydraulic Nuts and ExpaTen, as well as the A-Loc and EcoRolls, both developed
    especially for rolling mills, all represent a 100% system solution with SCHAAF’s accessories such as high-pressure hoses and high-pressure generators.

    SCHAAF_02-00-Bolt_Tensioning_GB-1343a0.pdf

    http://schaaf-gmbh.com/englisch/produkt/hm-1.htm

Product news

Contact SCHAAF GmbH & Co.KG now!

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