Case Studies

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Engineering Case Studies

Real Challenges. Smart Solutions. Proven Results.

At Rajhans Corporation, every project is an opportunity to deliver more than just components—we deliver performance, efficiency, and trust. Below are some real-world case studies that showcase our capability in product development, cost reduction, and technical problem-solving for global clients.

Industry: Construction Equipment – USA

Challenge:

  • Converted from billet machining to investment casting
  • Redesigned geometry to reduce machining by 38%
  • Optimized wall thickness

Result:

  • 28% cost reduction
  • 40% reduction in machining time
  • Lead time reduced by 2 weeks

Industry: Agriculture Equipment – Europe

Challenge:

  • Multiple bore alignments and GD&T within 25 microns

Solution:

  • Used 3-axis and 4-axis CNCs
  • Custom machining fixtures
  • 100% CMM inspection for pilot lot

Result:

  • 100% PPAP approval on first submission
  • Zero rejections over 10,000+ pcs

Industry: Oil & Gas – Middle East

Challenge:

  • No drawing or CAD available
  • Damaged sample provided

Solution:

  • 3D scanning and CAD modeling
  • Spectro material analysis
  • Pattern development and sample delivery in 3 weeks

Result:

  • Fitment approved
  • Lead time saved: 10–12 weeks

Industry: Electric Vehicle – Germany

Challenge: Weight reduction of 20% required on cast iron part

Solution:

  • Redesigned in Aluminum LM6 with FEA validation
  • Gravity die casting and ribbed structure

Result:

  • 26% weight reduction
  • Passed fatigue & vibration tests

Industry: Thermal Equipment – India

Challenge: Operation at 750°C with high-speed performance

Solution:

  • Used HK40 steel and solution annealing
  • 4-axis machining and dynamic balancing

Result:

  • Service life doubled
  • Complied with ISO G6.3 tolerance

Industry: Automation & Robotics – South Korea

Challenge: Internal helical groove with ±10 micron bore tolerance

Solution:

  • Live tooling with CBN inserts
  • Custom coolant enclosure for thermal stability

Result:

  • Ra < 0.4 µm finish
  • Annual order for 50,000 pcs secured