Crankshaft Hardening Service in Punjab
Maximize engine performance with precision-controlled journal and crankpin hardening. We deliver high-cycle fatigue resistance and 50–58 HRC surfaces for automotive and industrial crankshafts across Punjab.
Looking for a dependable crankshaft hardening service in Punjab? Crankshafts are the most critical rotating components in any engine. At Thakur Industries, our precision induction crankshaft hardening job work raises bearing journals and crankpins to 50–58 HRC for wear resistance, while keeping the fillets and core tough enough to prevent engine-destroying fatigue cracks. We serve automotive, tractor, genset and industrial OEMs across Ludhiana and Punjab with selective hardening on EN24, 4340 and EN9 crankshafts.
Journals & Crankpins
Effective crankshaft hardening requires more than just high HRC levels. We focus on the transition zone between the hardened surface and the ductile core.
- Journal Hardening: 50–58 HRC for superior bearing life.
- Crankpin & Fillet Hardening: precision heating to enhance fatigue resistance.
- Oil Hole Protection: preventing cracks at lubrication points.
- Core Integrity: preserving ductility for high-RPM stability.
// MATERIALS //
Crankshaft Steel Grades We Harden
We induction-harden all common forged crankshaft steels. Explore our dedicated material-grade pages for hardness, case depth and application detail:
// SPECIFICATIONS //
Crankshaft Hardening Specifications
| Surface Hardness | 50–58 HRC (journals & crankpins) |
|---|---|
| Case Depth | 2.0 mm – 4.0 mm (controlled to spec) |
| Max Crankshaft Length (in-house) | Up to 2.5 m |
| Hardened Zones | Main journals, crankpins, fillets — selective |
| Steel Grades | EN24, 4340, EN19, EN9, EN8, forged carbon steels |
| Masking | Copper masking to protect oil holes & bearing edges |
| Straightness / Runout | Within ±0.05 mm after straightening |
| Turnaround | 3–5 working days (standard) |
| Testing | HRC at each journal, case-depth & straightness check |
Our Workflow
Stress Relieving
Thermal stabilization before the main hardening cycle to ensure zero micro-cracks.
Induction Cycle
Programmable digital heating of main and big-end journals using module-specific copper coils.
Quench Control
Advanced polymer quenching to achieve uniform hardness without quenching cracks.
Precision Tempering
Relieving residual stresses to enhance toughness and prevent service failure.
Straightening
Post-heat correction to within ±0.05mm runout using specialized hydraulic jigs.
Final Balancing
Verification of dynamic balance and journal concentricity for high-performance use.
Distortion & Straightness Control
We deliver OEM-grade standards for automotive, agricultural and power-generation engines, with tight geometric control on every crankshaft:
- Hardness: 50–58 HRC (material dependent)
- Case Depth: 2.0mm to 4.0mm deep penetration
- Runout: within ±0.05mm after straightening
- Surface Finish: compatible with final micro-grinding
- Materials: EN19, EN24, 4340, EN9, forged carbon steels
// PRICING & TURNAROUND //
Crankshaft Hardening Rates & Lead Time
We offer competitive crankshaft hardening rates for both single rebuild jobs and bulk OEM production. Final pricing depends on shaft size, number of journals and crankpins, case depth, steel grade and quantity — share your drawing for an exact quote within 24 hours.
Pricing Basis
Priced per piece, with reduced rates on bulk and repeat OEM orders.
Minimum Order
No rigid minimum — single rebuild crankshafts to multi-piece OEM lots accepted.
Turnaround
Standard 3–5 working days; urgent same-week jobs for regular clients.
Industry Focus
Automotive Engines
Passenger and commercial vehicle crankshafts.
Diesel Gensets
Heavy-duty power generation components.
Industrial Pumps
High-pressure pump shafts and crankshafts.
// WHY CHOOSE US //
Why OEMs Trust Thakur Industries
Consistent 50–58 HRC
Repeatable journal hardness on every crankshaft, batch after batch.
Selective & Masked
Copper masking protects oil holes and bearing edges from over-hardening.
Years of Experience
Serving Punjab’s automotive, tractor and genset crankshaft makers.
Fast Turnaround
3–5 day standard delivery with full hardness & straightness reports.
Related Services
// PROCESS //
Our Crankshaft Hardening Process
Crankshaft Inspection
We verify journal dimensions, oil passage locations, material grade (EN24/4340), and define the hardening zones to avoid bearing surfaces.
Selective Induction Hardening
Custom scanning coils harden the crankpin and journal surfaces to 50–58 HRC while masking sensitive areas with copper shields.
Distortion Check & Certification
Dimensional inspection for straightness, hardness verification on all journals, and certificated dispatch within 3–5 days.
Quality Assurance
Journal Hardness
HRC verified on every main and big-end journal.
Straightness Check
Runout measured within ±0.05mm after straightening.
Case-Depth Audit
Cross-section verification of 2–4mm penetration.
Traceability
Digital logging of every cycle for OEM documentation.
Crankshaft Hardening FAQs
Learn more about the metallurgy of surface hardening from the ASM International heat-treatment resources.
Last updated: June 2026 · Thakur Industries, Ludhiana, Punjab
Ready to Harden Your Quality?
Contact us for a free consultation. Send your component details or drawings and get a quick quotation within 24 hours.