Parabolic Leaf Spring Assembly Detail drawing for Automotive Use

Parabolic Leaf Spring Technical Specifications

This detailed engineering drawing depicts a multi-layer parabolic leaf spring assembly for heavy-duty automotive applications, specifically designed for Otokar vehicles. The assembly features precise specifications for both main and auxiliary leaf components manufactured from 50CrV4/DIN4620 spring steel with hardness requirements of 415-461 HB.

Key Components:
– Main leaf assembly with parabolic profile and 1750mm overall length
– Multiple leaf layers (1st, 2nd, 3rd layers clearly defined)
– Rubber bushings (C 01 01 ÇB/B0020)
– Clamp assemblies (C 01 41 MC, 3 units required)
– Rubber dampers/isolators (C 38 01 LB/B0049)

Critical Dimensions:
– Center bolt hole diameter: Ø10.5+0.3mm
– Cutting axis distance: 1550mm
– Assembly axis distance: 1535mm
– Flat region length: 130mm
– Clamp position tolerances: ±1.5mm

The drawing includes detailed load testing specifications with rate values and maximum/applied load parameters. The material tapers parabolically from center to ends with precise thickness transitions, improving weight-to-strength ratio compared to conventional multi-leaf designs. Mounting hardware includes M10×1.5 fasteners and specialized clamps that maintain proper leaf alignment during compression cycles.