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Original Komatsu pilot Valve 702-16-04290 Break...Original Komatsu pilot Valve 702-16-04290 Break...
01

Original Komatsu pilot Valve 702-16-04290 Break...

2025-12-15

1.Product name:Pilot valve /Foot pedal valve

2.Part number:702-16-04290

3.Compatible for:PC200 PC400 PC78US

4.Leading time:2-3 days

5.Packing way:Neutral packing or customization packing

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DX75 DX60 DX80 Travel Foot Pedal Valve pilot Va...DX75 DX60 DX80 Travel Foot Pedal Valve pilot Va...
02

DX75 DX60 DX80 Travel Foot Pedal Valve pilot Va...

2025-12-14

1.Product name:Pilot valve /Foot pedal valve

2.Part number:410119-00038A

3.Compatible for:DX75 DX60 DX80

4.Leading time:2-3 days

5.Packing way:Neutral packing or customization packing

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D902 Crankshaft 1G962-23012 Suitable For Kubota...D902 Crankshaft 1G962-23012 Suitable For Kubota...
03

D902 Crankshaft 1G962-23012 Suitable For Kubota...

2025-12-09
  1. Provides an excellent balance of strength, wear resistance, and dampening.

  2. The graphite nodules act as crack arresters, improving fatigue life.

  3. Offers superior vibration dampening properties compared to steel.

  4. A cost-effective solution for high-volume production engines.

  5. The casting process allows for complex shapes and internal channels.

  6. Has good machinability, which keeps manufacturing costs down.

  7. Widely used in passenger car and light-duty diesel engines.

  8. Its inherent lubricity (from graphite) is beneficial for bearing surfaces.

  9. Can be induction hardened at the main and pin journals.

  10. Provides adequate strength for most naturally aspirated applications.

  11. The microstructure ensures good stability under thermal cycling.

  12. The damping capacity reduces overall engine noise, vibration, and harshness (NVH).

  13. A reliable and proven material for mass-market automotive use.

  14. Often used in conjunction with powdered metal connecting rods.

  15. Surface treatments like tufftriding are common for enhanced wear resistance.

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D722 Crankshaft 16863-2303 16861-23012 16861-23...D722 Crankshaft 16863-2303 16861-23012 16861-23...
04

D722 Crankshaft 16863-2303 16861-23012 16861-23...

2025-12-09
  1. Forged medium-carbon steel is the primary material for Kubota crankshafts.
  2. Precise alloying with elements like chromium, molybdenum, and nickel for strength.
  3. Use of high-quality, clean steel to minimize inclusions and stress points.
  4. Micro-alloyed steel variants are employed in certain high-stress models.
  5. The material boasts an excellent strength-to-weight ratio.
  6. Uniform metallurgical structure is ensured through controlled forging.
  7. Steel composition is optimized for both fatigue resistance and machinability.
  8. Trace element control guarantees consistent batch-to-batch material properties.
  9. The chosen steel grade offers superior toughness under impact loads.
  10. Material selection prioritizes long-term dimensional stability under heat and stress.

 

  1. Forging & Forming Process

 

  1. Crankshafts are precision-forged under immense pressure to align grain flow.
  2. Hot forging process shapes the metal while enhancing its inherent strength.
  3. Forging eliminates internal porosity, creating a denser, more reliable component.
  4. The forging die design is optimized for material distribution and minimal waste.
  5. Near-net-shape forging reduces the amount of subsequent machining required.
  6. Controlled cooling after forging refines the microstructure.
  7. Forging ensures continuous grain lines following the crankshaft's contour, improving fatigue life.
  8. This method produces a crankshaft with superior integrity compared to casting.

 

  1. Heat Treatment & Surface Hardening

 

  1. A through-hardening process (quenching and tempering) provides a balanced core hardness.
  2. Tempering relieves internal stresses induced during quenching, improving toughness.
  3. Induction hardening is applied specifically to critical areas like journal fillets.
  4. Surface hardening on main and pin journals dramatically increases wear resistance.
  5. Case hardening creates a hard exterior with a tough, ductile core.
  6. Nitriding or nitrocarburizing treatments are used on some models for extreme surface hardness.
  7. Heat treatment cycles are computer-controlled for absolute consistency.
  8. The resulting hardness profile is meticulously designed to withstand bearing pressures.
  9. Treated crankshafts exhibit excellent resistance to micro-welding and scoring.
  10. Post-heat-treatment, the component achieves optimal mechanical properties for its service life.

 

  1. Machining & Finishing

 

  1. CNC machining ensures micron-level precision on all journal diameters and widths.
  2. Precision grinding achieves a mirror-like finish on bearing journals.
  3. Super-finished journal surfaces minimize friction and reduce oil film breakdown.
  4. Fillet rolling is a critical process performed on the radii where journals meet webs.
  5. Fillet rolling induces compressive surface stresses, greatly enhancing fatigue strength.
  6. All oil passage holes are deburred and polished to prevent stress concentrations.
  7. Dynamic balancing is performed to remove any vibrational imbalance.
  8. Each crankshaft is polished to remove microscopic peaks that could initiate wear.
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Kobelco SK200-8 SK210-8 SK240-8 Solenoid Valve ...Kobelco SK200-8 SK210-8 SK240-8 Solenoid Valve ...
05

Kobelco SK200-8 SK210-8 SK240-8 Solenoid Valve ...

2025-01-21
1.Product name:solenoid valve assembly
2.Part number:
3.Compatible for:Kobelco Excavator SK200-8 SK210-8 SK240-8
4.Leading time:2-3 days
5.Packing way:Neutral packing
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Kobelco Pilot Valve YN30V00105F2 Foot Pedal Val...Kobelco Pilot Valve YN30V00105F2 Foot Pedal Val...
06

Kobelco Pilot Valve YN30V00105F2 Foot Pedal Val...

2025-01-16

1.Product name:Pilot valve /Foot pedal valve

2.Part number:YN30V00105F2

3.Compatible for:Kobelco excavator SK210-8 SK250-8

4.Leading time:2-3 days

5.Packing way:Neutral packing or customization packing

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Side door Lock For Kobeclo Excavator SK200 250 330Side door Lock For Kobeclo Excavator SK200 250 330
07

Side door Lock For Kobeclo Excavator SK200 250 330

2025-06-25

1.Product name:Side door lock

2.Part number:

3.Compatible for: Kobeclo excavator SK250 260 200 330 350-8

4.Leading time:In stock

5.Packing way:Neutral packing

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