Rimamid is a high-strength polymer that easily replaces metals in mechanical assembly units.
The main advantages of Rimamid are low friction coefficient, low specific gravity and high strength, which together provide life extension of the assembly parts by 3-4 times, facilitate maintenance, save time and cost.
Rimamid was developed in 2005 and nowadays successfully replaces bronze, brass, fluoroplastic, textolite, caprolon, sintered powders, ZAMAK, cast iron, stainless and other types of steel, eliminating the disadvantages inherent in these materials.

Mass and piecework production

Rimamid blanks are supplied in rods, plates and other standard geometrical shapes. Parts are made of them by means of machining on milling, turning, gear-cutting and other machines. At the customer’s request blanks can be made bespoke.

In cases, when big volume of one part is required, we offer our services of our small-scale production division. The molding will be made individually for you, as well as Rimamid grade will be selected (developed) to meet operating conditions of the specified part. If you want to purchase a small number of parts or a prototype, we can offer piecework production according to your drawings, samples or sketches.

Our specialists have extensive experience in the use of Rimamid in various industries from petrochemistry to public catering, and can often offer additional options for the use of Rimamid in your production that increase efficiency and reduce costs.

Rimamid is supplied in rods, plates and other shapes for further machining. Due to low density of the material (1,18 g/cm3) and absence of abrasive inclusions, machining is, on average, 5 times faster than that of metals, which allows to manufacture 5 times more parts from Rimamid during the same time period.
Rimamid possesses unique strength characteristics, which allows to use it as a substitute for metal products in high-loaded assemblies. Rimamid parts, unlike metals, do not tip and are able to to dampen impact loads arising from the operation of mechanisms, which means that not only they serve longer, but also prolong the service life of mating parts.
Rimamid has low friction ratio. For example, friction coefficient of Rimamid against steel is 2 times less than that of bronze (0.4 vs. 0.8). When compared to other materials, this ratio is almost always maintained. Low friction coefficient and improved anti-friction properties of Rimamid allow to increase the service life of the mechanism, increase efficiency, reduce the temperature in friction areas and minimize risks of the assembly unit failure during oil starvation.
Rimamid has the property of surface saturation - lubricating material (oil) penetrates its surface to the depth of 2 mm. In case of oil starvation, the temperature in the assembly unit increases, which leads to the release of oil from the part surface. Thus, using Rimamid can reduce after-effects of a malfunctioning lubrication system.
Specific gravity of Rimamid is 1.18 g/cm3, for comparison, it is 6.5 times less than specific gravity of steel or 7.5 times less than specific weight of bronze. Accordingly, 7.5 times more details can be made from 1 kg of Rimamid than from 1 kg of bronze, with each Rimamid piece being 7.5 times lighter than bronze. One can compare transportation, installation and maintenance costs of two similar parts made of bronze and Rimamid weighing 150 and 20 kg, respectively. Weight reducing of the part provides other benefits:
  • the moment of inertia reduction;
  • vibration reduction;
  • noise reduction;
  • assembly unit efficiency increase.
During grinding both the part and its counter part are subject to greater wear, that leads to the appearance of abrasive, which getting into the oil, spreads through the mechanism and negatively affects all its parts. Rimamid parts adapt well to the shape of counter parts and compensate for geometric errors of manufacture and assembly, and consequently no additional grinding is required. Herewith, the abrasive does not appear.
Rimamid has high chemical resistance to various environments. Despite this, there are conditions in which Rimamid is not effective without prior treatment. For example, it is not resistant to sulfuric acid, but after special treatment, Rimamid worked for more than 24 hours in a 40% solution of sulfuric acid without losing its physical properties. For comparison, specialized steel parts were replaced every 3 hours under the same conditions. As can be seen from the example above, the use of parts from Rimamid, even in very aggressive environments, is possible and more efficient, than use of traditional materials.
Comparing Rimamid to metals it is important to note that the latter are susceptible to corrosion. In its turn, it leads to premature failure. The use of parts from Rimamid reduces the requirements for corrosion protection without affecting the reliability of the assembly unit.
Low specific weight, strength and reduced friction ratio result in the fact, that Rimamid parts serve several times longer, than parts made from caprolon, bronze or even steel. Durable molecular structure enables to withstand high loads, and the absence of abrasive positively affects the operation of the entire unit. Rimamid is not susceptible to corrosion, resistant to chemicals and aggressive environments.
Besides, due to elastic deformation the load is distributed over the contact surfaces uniformly and the specific pressure decreases. Consequently, not only the service life of Rimamid part increases, but also the service life of the counterpart and of the assembly unit on the whole.
On codition that, quality standards are maintained, any customer is concerned about the cost of the finished product, not in the cost of the material from which it is made. Since Rimamid is 5-7 times lighter than metals, 5-7 times more parts from the same weight can be made. Alongside with this, almost always the main share in the cost of the finished product is not the material, but the cost of manufacture. Taking into account the ease of Rimamid processing, it will always be much cheaper to make products from it.
In final calculations, in addition to the part price, it is also necessary to consider the cost of ownership, which includes the cost of its installation on the assembly unit, the frequency of maintenance, the cost of lubricants, the frequency of replacement and the impact on the mating parts. Keeping in mind all previously considered benefits, it can be asserted, that the cost of ownership of Rimamid parts will be significantly lower than the cost of ownership of parts made from traditional materials.
Replacing the bronze gear with Rimamid
Crown weight
40 Kg
Crown cost
Doesn't emit abrasive
No oil change required
Crown weight
255 Kg
Crown cost
Emits abrasive
Oil change required
Driving wheel of a snowmobile lynx adventure
Ultra High Molecular Polyethylene
Maximum operating temperature
Low margin of safety
Maximum operating temperature
High margin of safety
Manufacturing cost
Abrasive separation during operation
Coefficient of friction
Oil change required
Manufacturing cost
Abrasive separation during operation
Does not emit
Coefficient of friction
No oil change required
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NPO StartPlast LLC, 423800, RT, Naberezhnye Chelny, Industrial and Municipal Zone, Industrial Zone, Production Passage, 45, office B203. Territory of OJSC Kamsky Industrial Park Master
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