Part of the suspension assembly
PRODUCT: QUERLENKERLAGER – suspension assembly component
Structural suspension assembly developed for heavy-duty automotive applications. The component requires high precision in casting, machining and assembly, with strict control of mounting forces to ensure correct functional performance.
Mass: 1.35 Kg Dimension: 165 × 55 × 30 mm
Material: Ductile Cast Iron, Stainless Steel
Raw part obtained per: Cast iron DISAMATIC moulding; central stainless-steel bushing machined from AISI 304 bar stock
Finished part obtained via: Machining + Coating + Semi-automatic assembly with force-controlled mounting of lateral components (<30 kN), mounting force of central bushings (>1 kN), and minimum bushing step-out force (>8 kN)
Challenge: guarantee correct fixing and functional forces → co-design with customer
OEM: Mercedes-Benz (via Tier1)
PROJECT OVERVIEW
The Querlenkerlager is a critical element of the suspension system. Throughout the project TECNOFOR managed:
- optimization of cast iron DISAMATIC moulding for repeatability and material integrity
- development of CNC machining on tight-tolerance geometries
- production of the central stainless-steel bushing via turning from AISI 304 bar
- application of coating according to OEM specifications
- design and execution of semi-automatic assembly
- controllo della forza di montaggio dei componenti laterali (<30 kN)
- force-controlled mounting of lateral components (>30 kN)
- verification of central bushing mounting force (>1 kN)
- co-design activities with the customer to ensure manufacturability and performance
This component is the central element of the rear Watt’s linkage suspension of the Mercedes G-Class 580 EQ, the fully electric version of the iconic G-Wagen.
PRODUCT EXAMPLES
Structural suspension components, developed and validated in collaboration with European Tier 1 suppliers and OEMs.
