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Crankshaft for Yanmar 4tnv94

ENGINE NO: 4TNV94
OEM/PART NO: 129902-21000
Engine type: 4‑Cylinder Diesel Engine (4TNV94 Series)
Crankshaft Material: Forged steel 40Cr
Warranty: 12 months
MOQ:5pcs

অনুসন্ধান পাঠান

Need a drop-in 4TNV94 crankshaft without the dealer markup? Our 129902-21000 starts with prime-grade 40Cr forgings-sourced from a state-run mill under strict incoming QC-then finish-machined, balanced and induction-hardened in our own plant. Every blank is 100 % ultrasonic-scanned before it reaches our line, so you get the same fatigue life as the original at a smaller price tag. Stock units leave our warehouse in 72 hours, and custom part numbers can be turned around in days.

	4TNV94	24
	129902-21000	556
	Forged steel 40Cr	65
		58
		110
Anti-rusty Coating		HRC52-58

(1)Forged Steel Reliability

Each 4TNV94 crankshaft (129902‑21000) is made from 40Cr forged steel, offering excellent resistance to bending and cracking.

Tensile strength over 1000 MPa and yield strength above 750 MPa, outperforming cast iron designs

Typical service life of 3–5 years in heavy-duty cycles, minimizing downtime

(2)Multi‑Stage Heat Treatment

Surface hardness HRC 52–58 with 3–5 mm hardened layer

(3)

Journal surfaces polished to Ra <=0.4 μm and roundness <=0.005 mm

(4) Stringent Quality Control

More than 30 quality checkpoints from forging to packaging

4TNV94 crankshaft ISO certification

The YANMAR 4TNV94 crankshaft (129902‑21000) is an ideal choice for:

Yanmar ViO55‑A / ViO75‑A, Hyundai R60‑9 / R55‑7, Kobelco SK60‑C, Hitachi ZX65, Daewoo DH55‑7

Yanmar YT335

product-1460-234

For 4TNV94 crankshaft, we offer our customers a choice of different types of packaging boxes: plywood and crude wood.

Lead Time: Stock items ship within 7 working days; customized production ~90 days

product-1-1

Q: What machines actually run this 4TNV94 crankshaft?

A: If the engine plate says 4TNV94, the odds are good it drops straight in. We ship it for Yanmar ViO55-A / ViO75-A diggers, Hyundai R60-9 / R55-7, Kobelco SK60-C, Hitachi ZX65, Daewoo DH55-7, and the Yanmar YT335 tractor.

A: We forge it from 40Cr, then run it through heat, quench, and draw so the journals hit 52–58 HRC.

Q: Can you provide third-party inspection certificates?

A: Yes, third-party test reports for hardness, balance, and hardened layer depth are available upon request.

A: Typically 3–5 years in continuous-duty excavation and agricultural use, significantly longer than cast iron alternatives.

A: Yes, samples are available, with fees refundable for bulk orders.

গরম ট্যাগ: crankshaft for yanmar 4tnv94, China crankshaft for yanmar 4tnv94 manufacturers, suppliers, factory

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