Industrial Furnaces
RUBIG Industrial Furnaces
Plasma Nitriding System - MICROPULS® Everest
DLC Coating System - MICROPULS® Diamond Xtended
The Coating System - MICROPULS® Procoat
Plasma Generator
Gas Nitriding System - GASCON K2
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Heat Treatment
RUBIG Heat Treatment
RUBIG Slovakia
Plasma nitriding - PLASNIT®
Hard coating - PLASTIT®
Vacuum hardening - R.VAC+®
Case hardening - R.CARB+®
Gas nitriding - R.NIT+®
Die Forge
RUBIG Die Forge
Safety Linchpins
Drive and Conveyor Systems
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Machining Technology
2D/3D Data download
Competence Center
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Drive and Conveyor Systems

RUBIG chain systems – robust and reliable

The well-known plate link chain of RUBIG that represents a further development of the Ewart chain, which was invented in the 19th century and is often referred to as flat chain or flat link chain by our customers. Detachable chains, developed and forged by RUBIG, use particular steel grades and manufacturing processes which provide the basis for their durability and toughness. Their good weldability makes them ideal for the individual manufacture of cost-effective, resilient conveyor belts for demanding environments.

RUBIG chain system “Classical”

The ideal chain for an harsh operating environment

The detachable chain, developed and forged by RUBIG, has a particularly beneficial fiber- and fabric-structure which provides, besides its innovative design, the basis for its durability and toughness. Advantages are:

  • Resistance to influences of weather
  • Nearly indestructible
  • Good weldability
  • Easy to assemble and disassemble by hand

RUBIG Chain C series

The C series is an extension of the proven RUBIG chain system

The C series is based on the popular RUBIG chain system. In response to customer requirements, we’ve increased the hook wrapping in comparison to our Classic version. All other dimensions remain unchanged, which means that C series chains fit the existing sprockets in our Classic series. It is not possible, however, to combine chain links of the C series with Classic links of the same size (without a corresponding transition element).

RUBIG Heavy duty drive chain

Standard heavy duty chains from RUBIG are made from boron-alloyed steel. Attachment plates, cross-bars etc. can be welded directly onto the chain links. Extended chain pins are a cost-effective alternative mounting option.

  • Drop-forged, hardened and tempered
  • Extremely strong and flexible
  • Large joint surfaces = reduced wear = reduced elongation
  • Weldable

RUBIG Sprockets

The original sprockets together with the proper RUBIG chain insure, as a result of their special tooth form, smoth running, low wear and safe transmission of force - even after prolonged use. Available as blanks or machined sockets.

RUBIG also supplies the gear wheels that are suitable for the chains. These are available as unmachined part (for customers who are themselves equipped for the machining or production of these machine components or assign this task to a contract turnery) or ready for mounting as sprocket with complete machining. The geometry of the sprockets deviates significantly from the typical gear wheel geometry with involutes. Therefore, RUBIG also provides 3D data on trace parts. However, please note that such a gear wheel does not fit into any similar chains of the competitors (e.g. Kohlswa or similar brands).

Maximum Chain Speed

The chain-speeds (table below) apply only for normal operating conditions dependent on the number of teeth, chains without bars, cups and plates. If the requirements are not met, the number of teeth needs to be reduced accordingly.


division678-910-1212-14 15+


T39 / T41,31,31,51,82,22,63,2


Cleaning systems

Since RUBIG chains are proven to be largely insensitive to weather, dampness and dirt, they are ideal chains for the use in rough cleaning facilities and small hydropower-power stations.

Recycling plant

The removal of material under the crusher is taken care of by a specially for recycling-conveyor developed scraper-chain. With the help of the RUBIG chain T100HV, broken material such as rubble, stones, earth etc. is continually pulled out from underneath the crusher.

Beet harvesting machines

This link chain is also used in every beet harvesting machine or harvester of the company Holmer due to its wear resistance. The main reason is the reliability required for beet harvesters – the wear parts of a beet harvester are expected to have a service life that spans at least a full season.

Shredder plant

The applied RUBIG chain is welded together with cross bars to a robust, collapsible conveyor belt. This band ensures safe transport of organic waste such as hedge cuttings, leaves, bark and root-waste to a shredder.

Band filter

Gravitybelt driven filters are used for the continuous purification of liquids, especially of metal working fluids, cooling waters and rolling emulsions. In doing so, a flow filter lying on a conveyor belt keeps the impurities back. In this example, the support tape connected to two sideways-running RUBIG T49 INOX chains is beeing simultaneously performed, excited and driven.


Cutters using RUBIG chains - finished in HV, insure a much longer operating lifespan as compared to other types of chains. The stripping of chains by hand provides excellent handling during maintenance, especially of systems with welded blades and broaches. Easy handling is also guaranteed when adding or removing individual links for reasons of best alignment. For the application in feed mixers as well as in silo rotary cutters that are still in use, RUBIG chains are installed as a high-strength and highly wear-resistant version.

Manure spreader

RUBIG chains prove to be ideal in highly polluted environments, like on fertilizer or manure spreaders. Further, the  broad design of the joints of the chain prevent rapid wear and tear.

It is suitable for use as a drive chain or as a conveyor chain. A typical application is the scraper floor, as it is installed on any agricultural manure spreader or fertiliser distributor – e.g. from Tebbe and HAWE Wester. In addition, these chain links forged from quenched and tempered steel are also used as scraper floor chain for lime spreaders and cement spreaders in road construction – e.g. with machines of the company Streumaster. If a spreader is designed with large dimensions, the RUBIG chain also enables the application of separation lime.

Running direction

The RUBIG - chain can be run in both directions, however, if contaminated it is best when the flaps point in the running direction. In situations where large tensile forces reach 20% or more of the break load it is best to mount the chain the other way around in order to be able to remove individual links easier from the drive wheels if  needed. Chains should only be mounted on sprockets having their flap openings pointing away from it. The drive should be located wherever possible on the tension side / in the desired transport direction.

Chain tensioner

  • Unilateral spring deflection wheels
  • Retensionable deflection wheels

The axle suspension offers advantages in situations where foreign particles could come between wheel and chain.


RUBIG chains are well weldable. Note however, that by welding plugs on the surfaces which are to be joint, they should not be heated above 250°C and the welding direction should always lead from the thinner to the thicker part of the chain link. Before welding on the second side, let the chain link cool down in still air! When welding parts on to the “HV” chains at 190°C - 200°C, we recommend to relax the chain for about an hour. If it is not possible to do so because of its size or cross-section and the chain overheats, it can be sent back to us (after welding) to get it heat treated.

Chain pads - bridge mounting

Well suited, as pads are special steel rails made ​​of “Robalon”. The chain should be welded on to the catch so that the catch runs on the bad and the chain does not come into contact with the bad.

Overload clutch

For safety reasons and trouble-free operations we recommend the installation of a mechanical overload clutch. Alternatively shear pins, electrical overload protections, belt-driven hydraulic motors or hydraulic limitations (if appropriately designed and set-up) suitable for overload protections.

Parallel running chains

If two or more chains are running side by side and are connected in parallel with the driver strip, you get the chains on request, equal in length mounted and bundled in pairs at no extra charge.

Maintenance / Care

It is possible to operate the RUBIG chains without special maintenance. However, the durability is reduced if not maintained properly. We therefore recommend the use of biodegradable chain oil (chainsaw oil). Especially before running the chains under an conveyer or if the chains are not used for some time (ending season), they should be thoroughly cleaned, oiled and dried.

Mounting a scraper floor bar can be done by direct welding onto the chain. Whereby a sophisticated option is by using special tappet members. In this procedure, each scraper floor bar is screwed onto a left and a right chain link by using a tappet member. Due to the fact that a tappet member link produced in such a way will not be tempered until it has been welded, the most optimum homogeneous structure is produced in the area of the weld seam.


The suspension of the axle is always an advantage if you get a foreign body between the wheel and chain.