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TRI-RIM
Tried and tested improved even further
The triple rim system for trucks, buses and trailers, already long established on the market, has now been further developed into a high-precision, individual safety component in 20" and 24" size segments for single and dual tyres.
Advantages of the triple rim system:
- Robustness and maximum safety, even with additional loading
- Easy wheel changing
- Safe wheel changing
- Longevity and durability
Since 1935, our rim segments for triple rim systems have been produced in our own facilities and have been proving themselves worldwide ever since, even under the most extreme, strenuous conditions. All rim segments are compatible with the existing triple rim systems.
Our new TRI-RIM segment builds on this proven system and now offers even more:
- The rim segments are made of a higher quality material with an approx. 15% higher yield strength, making the TRI-RIM even stronger, more durable and longer-lasting.
- The rim segments are made of hot-rolled and hot-formed structural steel. Thus, they do not have any destructive residual stress and feature high brittle fracture resistance as well as extremely precise dimensional accuracy.
The most important facts regarding the rim segments:
High tensile strength:
- Yield strength: min. 275 MPa
- Ultimate tensile strength: min. 430 MPa with a very narrow scatter band; The payoff:the use of TRI-RIM segments increases the load-bearing capacity of the wheel and reduces wear and tear, particularly at the front ends of the segments.
High britttle fracture resistance:
TRI-RIM has a fine-grained structure that gives it a high degree of brittle fracture resistance. Notched impact strength values from min. 27 J at -10 degrees are easily attained, making use at lower ambient temperatures possible as well.
Low residual stress:
Due to the normalizing heat treatment forming process used for the segments, TRI-RIM exhibits a significantly lower residual stress level as compared to cold-formed segments. The segments thus retain their shape during driving and the wheels achieve continuous optimal concentricity.
Excellent corrosion protection:
The primer and varnish used for the TRI-RIM segments provide improved corrosion protection.The salt spray test proves it.
Evenly-proportioned unit weight and high contour accuracy.
The high reproducibility and consistency of our modern production plants guarantee total uniformity of all TRI-RIM rim segments. This also ensures excellent concentricity of the wheels.
TRI-RIM-Datenblatt [132.92 kb] Our data sheet as download: TRI-RIM data sheet