Wholesale Mitsubishi S4Q crankshaft (OEM 32C01-12100) resolves fatigue cracking, perfectly designed for CAT 304C excavators. Forged steel, factory direct
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Mitsubishi crankshaft for S4Q and S4Q2 engines.
Forged steel construction with HRC 50-55 hardness and induction hardened journals. OEM: 32C01-12100 | Cross ref: 32C01-02100.
Fits CAT 304C excavators, Terex TC60, and Mitsubishi FD15 forklifts while preventing thermal fatigue. Ready for global export.
Over thousands of operating hours under heavy loads, factory crankshaft main journals frequently suffer from thermal fatigue, scoring from oil contamination, and fillet radius cracking. We address these critical failure modes by utilizing high-tensile forged steel alloy rather than standard cast iron. By incorporating advanced induction hardening and precision-rolled fillets, this crankshaft effectively dissipates torsional stress, drastically reducing the risk of catastrophic snapping or premature bearing wear during severe digging or lifting cycles.
| Engine Model | Mitsubishi S4Q, S4Q2, S4Q2-T |
| OEM Part Numbers | 32C01-12100, 32C01-02100, 32C0102100 |
| Material | High-Tensile Forged Steel Alloy (42CrMo) |
| Stroke / Crank Throw | 103.0 mm |
| Main Journal Diameter | Standard OEM Specs (STD) |
| Hardness Depth | 3.0mm – 5.0mm (Induction Layer) |
| Surface Hardness | HRC 50-55 |
| Dynamic Balancing | G6.3 Precision Grade (ISO 1940-1) |
| Equipment Category | Compatible Models |
|---|---|
| Caterpillar (CAT) | 304C CR, 305C CR Midi Excavators, 904B, 904H Compact Wheel Loaders |
| Terex Excavators | HR18, TC48, TC51, TC60, TC65 |
| Mitsubishi Forklifts | FD15, FD18, FD20, FD25 (Pneumatic Tire Series) |
| Generators & Industrial | SDMO / Broadcrown T20U, T22K, BCM 22-60SP, Doosan G25, Magnum Light Towers |
| Engine Model | Main Application |
|---|---|
| S4Q | Mitsubishi Forklift, Mini Excavator, Caterpillar |
| 4D30 / 4D31 (6 Holes) | Fuso Canter, Rosa Bus |
| 4D32 (9 holes) | Fuso Canter |
| 4D33 / 4D34 | Fuso Canter FE Series, Rosa Bus |
| 4D35 | Fuso Canter |
| 4D55 | Older L200, Pajero |
| 4D56 / D4BA | L200, Pajero, Hyundai H1/H100, Delica |
| 4D56T / 4D56U | L200 Triton, Pajero Sport (Common Rail) |
| 4DR5 | Mitsubishi Jeep, Canter |
| 4G15 / 4G13 | Mitsubishi Lancer, Colt, Mirage |
| 4G54 | Pajero, Forklift, Mazda B2600 |
| 4G63 | Mitsubishi Forklift (FG25), Galant, L300 |
| 4G64 | Mitsubishi Forklift (FG25), Galant, L300 |
| 4M40 | Pajero, Delica, Triton |
| S4S | Mitsubishi Forklift, Clark, TCM Forklift |
| S6KT | CAT 320 Excavator (Rebadged 6D16) |
| S4E / S4E2 | Forklift, Marine Engine |
| S4F | Agriculture, Tractor |
| S4K | CAT Excavator (E120B), Mitsubishi |
| S6K | CAT Excavator (E200B), Mitsubishi |
| S6S | Forklift (FD35), Excavator |
| 6D14 / 6D15 | Fuso Fighter, Kato/Kobelco Excavator |
| 6D16 / 6D16T | Fuso Fighter, Kobelco SK330 |
| 6D17 | Fuso Fighter (Late model) |
| 6D31 / 6D31T | Fuso FK, Excavators |
| 6D34 / 6D34T | Fuso Fighter, Construction |
| 6D22 / 6D20 / 6D24 | Fuso Super Great, Heavy Excavator |
| 6D40 | Fuso Super Great (Heavy Truck) |
| 8DC91 / 8DC92 | Fuso Super Great, Heavy Dump Truck |
| 8DC11 / 8DC82 | Fuso Heavy Duty Truck |
| 6G72 | Pajero V6, Montero |
| 6DB1 / 6DB10 | Older Fuso Truck |
| 6M70 | Fuso Super Great (Common Rail) |
| 8PC1 / 8PE1 | Fuso Bus, Heavy Truck |
Continuous heavy-duty cycles in equipment like the CAT 304C excavator often lead to thermal fatigue and oil film breakdown, directly causing main journal scoring. Our 32C01-12100 crankshafts are forged with high-tensile steel and induction hardened to HRC 50-55 to prevent this premature wear and extend service life.
Yes, the 32C01-12100 forged crankshaft is fully compatible with both naturally aspirated S4Q and turbocharged S4Q2-T engines. It is engineered to handle the increased torque output and cylinder pressure requirements of the S4Q2-T utilized in Terex TC60 excavators and Broadcrown generator sets.
Always replace the main bearings and thrust washers when installing a new crankshaft, and ensure engine block oil passages are thoroughly flushed. For Mitsubishi S4Q series engines, you must torque the main bearing caps precisely to specifications following the factory crisscross sequence to prevent any journal misalignment or binding.
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📧 Email: [email protected]
⚡ Fast response | Factory direct | Global shipping | ISO 9001 Certified
Custom Crankshaft manufacturing available based on samples or drawings. OEM/ODM capabilities.
For Any Inquiries, please feel free to contact us, Our sales teams are always glad to support your business