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High quality excavator bucket bushing OEM 4438771 suitable for Hitachi 330

  • OEM replacement :4438771
  • Material : 45#/40Cr/42CrMo
  • Applicable models :Hitachi 330/330-3/330-3G/330-5G/330-5A
Availability:
Quantity:
  • 4438771

>> Product Name

Excavator bucket bushing.


>> Product Use

1. Mechanical connection and support

Key connection components: As the connection hub between the bucket and the forearm (or dipper arm), it is fixed by a pin to ensure that the bucket moves in coordination with the whole machine during excavation, unloading and other actions.

Load bearing: It bears the axial force, radial force and impact load generated during the excavation process to ensure structural stability.

2. Wear resistance and friction reduction

Reducing friction loss: The bushing is in direct contact with the pin. By selecting copper alloy, alloy steel or composite materials (such as graphite/molybdenum disulfide), the friction coefficient is reduced, wear is reduced, and the service life of the pin and bushing is extended.

Adaptation to harsh working conditions: In environments such as mud, sand, and gravel, high-hardness materials (such as quenched alloy steel and aluminum bronze) can resist particle wear and avoid excessive gaps or jamming caused by wear.


Certificate


>> The Company's Main Product Display

    Excavator bushing    


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2
3
4


    Excavator pin    


2
1
4
3


    Loader bushing    


44
33
22
11


    Loader pin    


1
2
3
4


    Construction machinery pins and bushings    


1
2
3
4


>> Partial Applicable Vehicle Model Display


CAT CAT301.7 CR CAT313 GC CAT323 GX CAT333
CAT301.4 CR CAT312 GC CAT323 CAT374
CAT302 CR CAT326 GC CAT316 GC CAT395
CAT303 CR CAT326 CAT 318D2L CAT352
CAT305.5 CAT320 GX CAT330 CAT355
CAT306.5 CAT320 GC CAT336 CAT330 GC
CAT307.5 CAT320 CAT350
CAT307 CAT323 GC CAT340
KOMATSU PC100-3/5/6 PC200-2/3/5/6/7/8 PC270-6/7/8 PC360-7
PC120-2/3/5/6 PC220-2/3/5/6/7/8 PC290-10/11 PC360LC-10/11
PC130-6/8/11 PC228-1/2/3/8/10/11 PC300LC-1/2/3/5/6/7/8 PC390LC-10/11
PC150-1/3/5/6 PC240-6/8/10/11 PC350-8
PC160-6/7/8 PC250-6 PC350LC-6/8/10/11
SANY SY135C SY75C SY245H-S SY415H-S
SY200C-S SY335BH-S SY95C SY375IDS
SY205C-S SY275H SY485H-S SY550H
SY215E SY235H-S SY485GLC-S
SY215C-S SY155H SY305H-S
KOBELCO SK210LC-10 SK200-10 SK60-8 SK140LC-8
SK130-11 SK250-10 SK380XD-10 SK460-8
SK75-11 SK260LC-10 SK220XD-10
SK350LC-10 SK330-10 SK150LC-11
Hitachi ZX130-6A ZX260K-6A ZX210LC-5A ZX490LCH-5A
ZX240-5A ZX260LCH-5A ZX350-6A Pro ZX220K-6A
ZX250-6A ZX200C-6A ZX360K-5A ZX520LCH-6A
ZX250K-5A ZH200-5A ZX300-6A ZX350-6A
ZX250LC-5A ZX210-6A

ZX300-5A

ZX500LCH-5A
ZX260LC-6A ZX210K-5A ZX370K-6A ZX220LC-6A
ZX195-5A ZX360H-5A ZX370H-6A



>> Product Raw Material

Alloy steel (such as 40Cr, 45# steel)

Features:

High strength and hardness: Through heat treatment processes such as quenching and tempering, the impact resistance and wear resistance can be significantly improved.

Cost advantage: Compared with copper alloys, alloy steel is cheaper and suitable for large-scale production.

Application scenarios: Suitable for medium loads and conventional construction environments (such as construction and municipal engineering).

Pin shaft raw materials


Bushing raw materials



High quality excavator bucket bushing OEM 4438771 suitable for Hitachi 330

 Process optimization

Heat treatment: such as quenching + tempering to improve the hardness of alloy steel, and austempering ductile iron (ADI) to enhance fatigue resistance.

Surface treatment: chrome plating, nitriding or spray welding wear-resistant alloy layer to extend the service life of the bushing.

Structural design: Some bushings have oil grooves, oil holes or sealing ring grooves to optimize lubrication and sealing.


Manufacturing Process for High-Quality Excavator Pin Shaft



FAQs



Q1: What is the typical application for the High Quality Excavator Bucket Cylinder Upper Pin Shaft?

A1: This pin shaft is specifically designed for excavator bucket cylinders, suitable for high-demand tasks in construction, mining, and heavy machinery operations.


Q2: Can you customize the pin shaft for other machine models?

A2: Yes, we offer full customization services for pin shafts based on your specifications, ensuring compatibility with a wide range of machinery models.


Q3: How do you ensure the durability of your excavator pin shafts?

A3: We use advanced heat treatment processes and high-quality materials to enhance the hardness and wear resistance of the pin shafts, ensuring long-lasting performance.


Q4: What materials are used for manufacturing the pin shaft?

A4: Our pin shafts are made from premium alloys such as 45C, 42CrMo4, and 41Cr4, selected for their durability and ability to withstand heavy-duty use.


Q5: Do you provide after-sales support for your excavator pin shafts?

A5: Yes, we provide comprehensive after-sales support, including product guidance, warranty services, and troubleshooting assistance to ensure continued operation.


Q6: How do I place a custom order for the pin shaft?

A6: Simply provide us with your design drawings or specifications, and we’ll create a customized pin shaft tailored to your exact requirements.


Q7: Can you ship to international locations?

A7: Yes, we can deliver our high-quality excavator pin shafts worldwide, offering efficient shipping and timely delivery to your location.


Q8: Are your pin shafts compatible with other excavator brands?

A8: Our pin shafts are designed for a wide range of excavators, including those from Sany Heavy Industry, but we can also customize them for other brands as needed.

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