Christian Maier, Germany

Christian Maier GmbH has been supplying a HUGE range of rotary joints (or rotary unions) to the paper, printing, textile and chemical industries since 1925.

Maier rotary joints connect stationary pipes with rotating systems to enable heating and cooling of the rotating system (by hot water, cold water, steam or thermal oil,) or to provide services to the rotating system (hot water, cold water, steam or thermal oil, air, electricity) such as is used on plastic roto-moulding equipment.

Rotary joints are often considered unimportant when compared to the cost of a machine or line. But they are essential components for the performance of machines in which they are installed. Critical usage configurations require theoretical and hands-on knowledge with a variety of applications.

Christian Maier has more than 50 years experience in producing rotary joint. Christian Maier produce more than 1,000 versions of standard and custom-made rotary joints, from single passage to multi passage, from DN3 (1/8″) to DN 500 (20″). An extensive laboratory established for 24 hour, 7 day a week testing is used by Christian Maier to ensure their products run well from the very beginning.

Used by manufacturers such as Heidelberg, MAN Roland, König und Bauer (Planeta, Albert Frankental), Mitsubishi, Rockwell, Goss, Windmöller & Hölscher, Comexi, Bobst, Bielloni, Nordmechanica, Kusters, Steuer, BHS, Higel Kältetechnik, Goudsche, Voith, Sandvik, Bühler, Netzsch, Lehmann, Krones and Metso (amongst many others!), Christian Maier rotary joints have an enviable reputation for value for money and reliability!

AND NOW - Sensor ready. The demand for intelligent sensors for monitoring processes is constantly increasing. As a technology leader, Christian Maier has developed sensors especially for rotary joints to monitor critical parameters as close to the process as possible. True to the motto “We don’t do half measures”, Christian Maier has developed a completely new Series DS - Available in January 2024 - which enables a simplified integration of Maier's sensors and combines the advantages of the DP and DX series.

For additional information, including catalogues and maintenance and repair details for Christian Maier’s rotary joints, go to our download section, contact Novsys or visit Christian Maier’s website at www.maier-heidenheim.de

Christian Maier DX and DXS Series Rotary Joints

Christian Maier DX series is the universal rotary joint series for water, equipped with mechanical seal and ball bearings. The DXS series is with equipped with a highly resistant, ceramics-coated sealing surface for higher temperatures and speeds, and prolonged service life.

Christian Maier DX and DXS series rotary joints are suitable for cooling water (DX/DXS) and hot water (DXS).

The advantages in you using this series include:

Separate one way flow and two way flow versions. This assures optimum cross-sections of the housing connections.

Easy for you (or us) to repair.

Proven thousands of times in the textile, plastic and paper industries.

Safe sealing even in applications subject to adverse conditions.

Christian Maier H & HW Series Rotary Joints

Christian Maier H and HW series is a universal rotary joint fitted with maintenance-free carbon sealing rings and carbon bushings. Metal impregnated sealing rings for thermal oil and higher pressure loads when used for hot water and steam are available. H3 version features an integrated vacuum valve for steam cylinders. There are many H and HW different versions available to meet your requirements.

The standard series H and HW are designed up to a nominal diameter 100 mm (4’’) to accommodate transfer of water, steam and thermal oil under temperature, rotation and pressure.

The heavy duty designs HWA, HWB and HWX are designed for higher speeds and higher loads and bigger diameters.

This series features a flexible modular system with housing flange and gasket connections, which can be modified.

Christian Maier DC Series Rotary Joints

Christian Maier DC series rotary joints are used to transfer hot water and steam at high pressures and speeds.

A patented balanced mechanical seal with external water cooling system enables this series to meets the special requirements of paper and fleece calendars, fibre and corrugated cardboard systems.

This series is also suitable for use in large, steam-heated driers.

Christian Maier DP Series Rotary Joints

Christian Maier DP series is a universal rotary joint for water and thermal oil, with balanced mechanical seal and ball bearings. Various seal combinations can be selected, depending on the application. This series meets the special requirements of the printing and plastics industries.

DP rotary joints are suitable for:

hot and cold water
for thermal oil
The small series can also be used for hydraulic oil and compressed air
Stainless steel versions are available for use in the Food Industry or for agressive media.

The standard DP series also provides you with many other benefits:

Low frictional torque (which is important for plastic foil production).
A long service life.
Easy field repair and maintenance.
Both housing and elbow are made of brass and are beadblasted. The bearings are protected by 5 drain holes in the housing.
Chrome steel rotor minimises wear for a long rotor life.
Two ball bearings are used. These bearings are factory-lubricated and maintenance free up to 80° C. For higher temperatures, relubrication through an easily accessible grease point is possible.
The internal mechanical seal is balanced and can be easily replaced with other sealing combinations, if your operating conditions change. Combination no. 1 is suitable for water up to 80° C, no. 3 for water and thermal oil up to 160° C, no. 4 is recommended for contaminated water and no. 5 is for air.
The DP series 800 is used for thermal oil, and is equipped with heat-stabilised ball bearings, Viton O-rings and an axial shaft seal for additional bearing protection.
Connection to the rotating pressure system is by means of:
Standardised connection pieces with right-hand or left-hand male thread G/BSP (ISO 228) or NPT (ANSI)
Sealing and centring face for gasket at end of thread
K-flange and conical inner ring (DN 40 and larger)
Fixed flange (F / DN 40 and larger), sealing with groove and O-ring.
Radial housing connection is made with right-hand thread G/BSP (ISO 228) or NPT (ANSI), axial with right hand thread NPT (ANSI) and screw plug. For series 800, radial and axial housing connections are made with right-hand thread G/BSP (ISO 228). Axial thread connect with screw plug and gasket.
Due to the low frictional moment anti-rotational devices are not required

Christian Maier DQ Series Rotary Joints

Christian Maier DQ series rotary joint is designed and used for thermal oil with high temperatures and speed ranges. The DQ series features a balanced mechanical seal.

The DQ, DQT, DQTX variants feature a patented system with an additional cooling circuit for cooling and lubrication of the bearings and seal. This enables use on calenders operating at high speeds and temperatures.

Christian Maier M Series Rotary Joints

Christian Maier M series is a range of sturdy rotary joints suitable for water and steam.

The extremely robust seals make these rotary joints suitable for use with polluted/high solids water at low speeds (e.g. in hot furnaces and stone-washing machines).

The rotor is made of steel with polished abrasion and corrosion-protective coating of metal-ceramics in the sealing surface area.

Christian Maier DA Series Rotary Joints

Christian Maier DA series is a range of shaft-supported rotary joints with maintenance-free, metal-impregnated sealing rings suitable for steam and thermal oil and water at low speeds.

The advantages in you using this series include:

This is an inexpensive design, since there are no bearings.
These rotary joints are available in large sizes, up to DN 300 mm nominal bore.
The seal rings are resistant to fraction, even at high pressures.
The design A2 for a rotating inner pipe has a seal between inlet and outlet.
This series is maintenance-free – No lubrication is necessary.

Christian Maier Multi-passage Rotary Joints

Christian Maier multi-passage rotary joints are used for the simultaneous supply of up to ten different media, including electricity, if required. Widely used for turntables, tools and forms in a wide range of industries.