Suitable for Schwing® pumps


In the pumping unit of a machine, the most important function is represented by the exchange that occurs through the movement of the S-valve; the contact and the seal between the parts is maintained and guaranteed by the wear ring that moves on the relative wear plate. RM® produces wear plates and rings compatible with the main brands of concrete pumps in the market. These components can be made of heat-treated cast iron or steel with tungsten carbide coatings, with very high strength.

SCHWING Interchangeable
schwing ring
Code Description Wear Ring
SCH10074767 wear plate DN 200 SCH10063939
SCH10074768 wear plate DN 230 SCH10063939
SCH10181938 wear plate DN 250 SCH10181916


Concrete delivery barrels, together with the pistons, pump the concrete from the pump hopper to the distribution pipeline. RM® produces steel barrels with internal chrome plating of constant thickness along the entire length to be compatible with the major pump manufacturers in the market. On specific requests from customers, RM® is able to produce delivery barrels according to drawings.

Chromed delivery barrels

Part Number Description Dimensions
SCH98331257 chromed delivery barrel 200×1775
SCH10207171 chromed delivery barrel 230×2125


The pistons, together with the chrome delivery barrel and the S-valve, are the heart of the machine. RM® produces rubber pistons with a compound capable of withstanding the heaviest duties to which they are subjected. The pistons are made using both the classic technology based on metal cores (generally made of cast iron or steel) on which the rubber is vulcanized, and the more recent technology that involves the use of replaceable caps and guide seals, fixed on supports generally made of aluminium alloys. In the latter case, in compliance with the different design choices, the lightness of the assemblies (about 20% less) can be achieved, which is particularly advantageous for the life of the system.

Part Number Description
SCH10161863 piston DN 150
SCH10161781 piston DN 180
SCH10161754 piston DN 200
SCH10161634 piston DN 230
SCH10161980 piston DN 250

Schwing® is registered trademark. RM® is an independent manufacturer and not related to the mentioned company. Trademarks, symbols, codes and manufacturer descriptions are for reference purposes only.

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VAT 00581130390  -  REA: RA-114274  -  Capitale sociale I.V.: € 110.000