• How long has Schrage been on the market?

    The company was founded in 1987 by Remmer Schrage. Today, his sons Ralf and Frank Schrage manage the company with extensive knowledge and diligence, patented ideas, tons of curiosity, and the ambition to get even better. In this way, Schrage has been developing and manufacturing tube chain conveyors for many different industries for more than two decades.

  • How big is the company now?

    Since the completion of the new production facility in 2009, all the conveyors are being built right here in Friedeburg, Germany. Our facility includes the office building, showroom, pilot plant, and production hall. And, these days, our team totals more than 50 people.

  • How did the development of the tube chain conveyor come about?

    A simple question started it all: What is the best way to get bulk material from A to B? In the late 1970s, the company founder, Remmer Schrage, started gathering first experiences with other conveyor technologies. However, the customers soon started demanding more: Are there any better methods of transport? Can you do it more flexibly, dust-tight, and more energy-efficient?
    That is when he started experimenting. The idea with the chain and the tube proved to be quite convenient and it gave the conveyor its name: tube chain conveyor. The advantages were as significant as the demand and, on July 31, 1987, Remmer Schrage founded Schrage Rohrkettensystem GmbH.

  • Do you have any competitors?

    Of course, there is competition out there. And that is important. The competition motivates us to get even better. After all, to be successful, you have to go beyond the ordinary. And that is what we are doing.
    At our Schrage pilot plant, we are constantly researching new solutions.
    Every time a customer comes to us with a problem, we get the chance to improve our systems. Proof of this are the numerous patents, thousands of installed conveyor systems and many satisfied customers – worldwide.

  • How fast can spare parts be delivered?

    We keep a lot of spare parts in stock or we get them for customers as fast as possible.
    By the way, thanks to years of experience and the use of optimum materials for all conveying systems, we managed to obtain maximum maintenance intervals and excellent durability for
    wear and tear parts.

    For as long as you are using our tube chain conveyor, we will be there for you, no ifs or buts,
    with full warranty coverage, even, of course, after the warranty has actually already expired.
    That is what we, at Schrage, consider as customer service. But actually, we just want you to
    be really satisfied with our conveyor systems.

  • Which sizes and types of tube chain conveyors are available?

    The basic version of our tube chain conveyors is available in five different sizes. The names are derived from the corresponding tube diameters. It is available as a 115, 135, 160, 200, and 270 and, in these sizes, they can be used for many different capacities.
    It also comes in the following designs:
    Horizontal tube chain conveyor (adjacent tubes), Upright tube chain conveyor (tubes on top of each other), and Vertical tube chain conveyor

    Of course, these different types can also be combined. This way, the tube chain conveyor can be flexibly installed in almost any location and its three-dimensional design allows it to adapt to virtually any operating conditions.

  • Are combinations of horizontal and vertical/inclined layouts possible?

    The different types and sizes can be combined easily. This way, the tube chain conveyor can be installed flexibly in almost any location. In addition, its three-dimensional design allows for a virtually perfect adaptation to the different operating conditions.

  • Is vertical conveyance possible?

    While many other conveyor systems have problems with vertical conveyance, the tube chain conveyor can handle this easily.

    Due to the small gaps between the conveyor discs (160 to 200 mm), chambers form in the vertical tube, which catch the product slipping from the chamber above. This way, the tube chain conveyor reaches up to 100% of the theoretical calculated conveying capacity. Another advantage is that only the conveyor chain, drive station, tube casing, and tube elbows are required for vertical transportation with the tube chain conveyor. No tensioning station is required since the chain is tightened by its own weight. This makes it almost maintenance free and amazingly affordable.

  • Is there a limited number of intakes and outlets?

    There is no limitation. The tube chain conveyor can be equipped with any number of intakes and outlets.

  • What is the maximum conveyor capacity?

    Due to the different sizes of the tube chain conveyor, throughputs of up to 80 m³/h can be achieved. However, since this depends on the size, please check out the conveyor capacity table.

  • What is the maximum conveyor length and height?

    Under normal conditions, the maximum length for a tube chain conveyor is up to 60 m horizontally or 40 m vertically. If you have longer distances to cover, the different systems can be combined. Please contact one of our engineers to discuss your special application.

  • Which bulk materials can be conveyed?

    We have already solved many seemingly impossible problems: granules, cullet, cookie crumbles or corn flakes, explosive powder, fine dust, or sticky sludge. The range of bulk materials we convey is so wide, we can’t possibly list it all here.

    Do you have a bulk material and don't know whether it would be suitable or not? Just contact our engineers. Or just send us a sample of your bulk material so that we can analyze it in our facility. We are looking forward to new challenges.


  • Is it possible to cool/heat the product?

    Cooling or heating up the bulk material during the transport in the tube chain conveyor is also possible. Our special disc design mixes the bulk material during the transport inside the tube
    chain conveyor. This way, new product comes into contact with the inside wall of the tube chain conveyor constantly. The conveyor tube is fitted with a special double mantle. A cooling medium
    is then pumped into the mantle to cool the bulk material inside the tube. To heat the bulk material, hot steam, water, or oil is used. Another way of heating the product would be the installation of a trace heating system. 

    The tube chain system then also acts as a heat exchanger. This dual function sometimes leads to a drastic minimization of the interfaces and thus helps lower the costs.

    A major advantage is that the product, which is often dusty, explosive, or even toxic, remains within a closed system.