Since the founding of the company, mechanical engineering has largely defined our services, which are complemented by preceding design and subsequent worldwide service. This customer-oriented range of services establishes SBN as a well demanded partner.

Our modern workshop, combined with the competence of our skilled personnel in the areas of welding, corrosion protection and assembly technologies ensures that the highest quality standards are met.

Client-optimized processes of design and production of structural steel elements, weighing up to 100 tonnes per unit, for civil engineering, industrial plants and shaft equipment are realised in our over 40,000 sqm large production halls. Furthermore, we fully manufacture and assemble the components and equipment for special foundation, construction and mining industry. Construction and reconstruction of machines and equipment, corrosion protection in the factory and on site, as well as worldwide service and repairs make our range of services complete.

These facilities, along with our technical department, make SBN a sought-after manufacturer and supplier for clients who expect cost-efficient and effective service.

Our extensive vertical integration of specialized services in areas of cutting, metal working, welding, machining, coating and assembly guarantee the quality of our work. Manufacturing, assembly and implementation of special projects make the range of services of mechanical engineering complete.

SBN, with its continually optimized and flexible production, meets the high demands of its clients from a variety of areas like construction and construction equipment industries or even the automobile and energy sectors. Each product is thus implemented as an individualised and cost-efficient solution.

Construction machinery

Mast and leader production

The production of masts and leaders – one of the strengths of the BAUER Group's large-diameter rotary drilling rigs – has now become an integral component of the SCHACHTBAU NORDHAUSEN GmbH portfolio. The product range of masts extends from one- or two-piece designs and intermediate profiles, to mast extensions and pivot assembly systems.

Leaders are available in two types – rigid systems and telescopic leaders. These are characterized by their unique rectangular composite construction, which allows high bending moments as well as torque of up to 90 kNm.

Undercarriages

The undercarriages have been designed for heavy-duty on-site operation of construction machinery with operating weights of 45 to 200 tonnes. In practice, two principles are used for the telescoping of undercarriages: the Holm-in-Holm solution and H-geometry.

SCHACHTBAU NORDHAUSEN GmbH provides the entire range of services for undercarriages – from design and construction to production and service.

Vehicle construction (Trailer)

Production of vehicle components for mobile construction equipment.

Components are made almost exclusively from ultra-high-strength fine-grain structural steel of grade S690QL and S700MC, which poses a major challenge for technicians with regard to processing, particularly welding.

Therefore, the necessary (welding) procedure qualification as per EN ISO 15614-1 and the qualification of welders according to EN 287-1, material group 3.1, is successfully completed prior to production. The Quality Control team – besides carrying out visual inspection – also performs tasks such as examining the leakproofness of tanks, detecting cracks by means of magnetic particle testing of butt weld plates, and ultrasonic testing of slurred thickness transitions.

Mining equipment
Production of shaft equipment

A variety of shaft equipment such as winches, hoists, and shaft guides are manufactured in the workshops of SCHACHTBAU NORDHAUSEN GmbH.

Case history:
- Bartensleben Shaft
- Total length of shaft guides ca. 1100 m, parts and accessories
- Standard profile, however with reduced tolerance
- Structural steel engineering and corrosion protection

Machine assembly

Upper carriage

Since 2003, upper carriages are being manufactured as carriers for BAUER drilling rigs.

These upper carriages of the BT series (BAUER Trägergerät) have been developed in a joint venture between SCHACHTBAU NORDHAUSEN GmbH and BAUER Maschinen GmbH.

Different types of upper carriages with input power of 155 kW to 313 kW are being constructed.

Well boring rigs

Rotary well boring rigs have been manufactured in cooperation with PRAKLA Bohrtechnik GmbH since 2005.

The production profile includes boring rigs with hoisting force of 25 t to 50 t. The assembly of boring rigs on a self-supporting frame facilitates the installation on many types of trucks, crawlers or trailers.

These rigs are primarily used for exploration drilling for mineral resources and deposits and for the construction of supply and dewatering wells.

Hydraulic power packs

Hydraulic power packs have been designed and manufactured by SCHACHTBAU NORDHAUSEN GmbH since 2003. These hydraulic power packs, which are integrated into containers, are used to drive a range of hydraulic equipment such as cutters or depth vibrators.

Currently two types of power packs with hydraulic flow rates ranging from 460 to 1500 l/min are available.

Crane systems

Our experience in the production of special cranes and available references make us an ideal partner for our clients. Owing to our comprehensive technical capabilities and knowledge of relevant regulations, we can offer our clients a complete spectrum of services.

The picture on the right shows a double-girder bridge crane with a lifting power of 500 t and a span of 30.5 m at the time of acceptance. In addition to the classical structural steel engineering work and corrosion protection, the crane was completely pre-assembled and subjected to a functional test. Both electric and hydraulic tests were carried out. After successful acceptance, the crane was dismantled in the maximum possible assemblies and prepared for dispatch.

Deep drilling technology
We manufacture large assembly groups for deep drilling rigs with drilling depths of up to 5,000 m.

Winches

Owing to the company's close association with mining, we manufacture winches for mining, as also for industrial use. We manufacture a wide variety of winches — from those used in windlasses right up to double-drum winches of different sizes.

Furthermore, we are working on overhauling winches to equip them with the latest state-of-the-art technology and are also carrying out on-site repair work of winches.

Remediation

Since 2009, windlasses have been overhauled and updated according to the current rules of (DIN VDE 0100/018) (ThürBVOS §7 §9) (TAS) at SCHACHTBAU NORDHAUSEN GmbH.

Example: Windlass construction year 1965
(Münzner Maschinenbau Obergruna/Sachsen B 5000x2x1)

In 2012/2013, this machine was overhauled and equipped with a variable conveyor speed of 0 to 2 m/s at SCHACHTBAU NORDHAUSEN GmbH. The drum has a diameter of 1.326 mm and was provided with Lebus half shells. The mechanical ventilation mechanism of the service brakes and emergency brakes was converted into an electric-hydraulic ventilation mechanism. The effective load on the winch is 50 kN and it can be used up to shaft depths of 1,000 m. A steel rope with a diameter of 24 mm is used for this purpose.

Drilling platforms

Working platforms for drilling rigs

At SCHACHTBAU NORDHAUSEN GmbH, drilling rig equipment such as working platforms and rod bearings are designed and manufactured for exploration drilling rigs and well boring rigs.

The design of the working platforms is modified according to the machine, the drilling technique and on-site conditions. Among others, clamping cylinders have been developed for crushing the drill pipes; these cylinders can be integrated in the working platform or the drilling rig. In addition, as part of project preparation, construction of the entire drilling site is offered on the premises of SCHACHTBAU NORDHAUSEN GmbH, in order to test the drilling equipment and examine and optimize the work sequences.

Services-Mechanical engineering

Design and development

Using 3D design programs, our mechanical engineering designers develop components and machines for international construction, mining and specialist foundation engineering markets.

Needless to say, full compliance with the stringent security requirements of the German Machinery Directive is ensured.

Design and development

Steel centre and cutting

The steel centre arranges the proper procurement of the necessary raw materials such as steel plates and profiles. These pre-products are cut with modern CNC machines with due regard to clear traceability.

Steel centre and cutting

Structural steel work and welding

In our modern production facilities we manufacture sophisticated welding structures.

In our mechanical engineering department, we process fine-grained steel up to S960
This requires qualified employees, modern welding technology, as well as a process accompanying quality system according to DIN EN ISO 3834-2.

We hold the manufacturer qualification according to DIN 18800-7:2008-11 (Class E) with extension to Ril 804 and EN1090-2, EXC4.

Machining

Our chipping process allows machining of elements with up to 14 m length on modern CNC boring and milling machines, with precision of up to 0.01 mm.

Machining

Headline

Quality Assurance

Our company is certified to ISO 9001 2008. Our employees follow the complete manufacturing process of our products through to their certification and production of relevant documentation. For our customers, it means: Quality from one source.

Corrosion Protection

Our Corrosion Protection Centre on our premises in Nordhausen is one of the most advanced plants in Thuringia.

In the centre, structural steel elements with a size of up to 40 m x 6.5 m x 3.5 m, and weight of up to 100 t can be derusted by abrasive blasting and treated with diverse coating systems.

Corrosion protection

Assembly and repair services

The services we offer to our clients range from planning of the work involved, complex assembly work, operating tests on the testing grounds, to the initial start-up and documentation.

Assembly and repair services

(only available in german)


Zertifikate Zerstörungsfreie Werkstoffprüfung	DIN EN ISO 9712 Durchstrahlungsprüfung Stufe 2 UT - Ultraschallprüfung Stufe 2 MT - Magnetpulverprüfung Stufe 2 VT - Sichtprüfung Stufe 2

Planung, Konstruktion und Fertigung entsprechend Maschinenrichtlinie	2006/42/EG

Fachnachweise Korrosion und Korrosionsschutz	DIN EN ISO 12944 DIN-Geprüfter Beschichtungsinspektor Stufe C KOR-Schein nach ZTV-ING

Korrosionsschutz durch Beschichtung	DIN EN ISO 12944 Stufe C DIN-Geprüfter Beschichtungsinspektor KOR-Schein nach ZTV-Ing.

Schweißprüfbescheinigung nach DIN EN ISO 9606-1 und DIN EN ISO 14732	111 - Lichtbogenhandschweißen 114 - Lichtbogenhandschweißen mit Fülldrahtelektrode (MF) 121 - Unterpulverschweißen mit UP-Draht 135 - MAG-Schweißen 136 - MAG-Schweißen mit Fülldrahtelektrode (MF) 783 - Hubzündungsbolzenschweißen 141 - WIG

Brochure
SBN Flyer Mechanical Engineering (only available in german)

SBN Brochure Mining Hoist

Productsheet
Mining Hoist SBN FH-25
Mining Hoist SBN FH-55 (only available in german)

Heiner Schmidmeier

Divisional Director Mechanical Engineering
Phone: +49 3631 632-346
E-Mail: sbn@schachtbau.de

get more details

Quick Links

How to find us

SCHACHTBAU NORDHAUSEN GmbH

Industrieweg 2a
99734 Nordhausen
Telephone: +49 3631 632-0
Fax:           +49 3631 632-334
E-Mail:      sbn@schachtbau.de
Web:          www.schachtbau.de