Kingpost and boom arm bushing suitable for JCB 3CX 4CX
NEXGEN

Kingpost and boom arm bushing suitable for JCB 3CX 4CX

Catalog number:808/00363 Nr OEM:808/00363 Manufacturer:NEXGEN
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BRASS KINGPOST / BOOM BUSH SUITABLE FOR JCB 3CX, 4CX - 808/00363

Technical Specification and Compatibility

A high-quality slide bush, made of a special brass alloy. It is a key component of the joint connecting the main backhoe boom to the kingpost. Its function is to provide smooth rotational movement for the pin and to bear enormous loads, minimizing friction and protecting more expensive components (the kingpost, the boom) from wear.

Part number: 808/00363
Manufacturer: CORESPEX
Height (mm): 62
Inner Diameter (mm): 50.9
Outer Diameter (mm): 70
Material: Brass

A CORESPEX brand product – premium quality replacements that guarantee long life and reliability, even when working in heavy-duty conditions.

Application in machines

Brand (Machine Type) Model
JCB (Backhoe Loaders) 3CX, 4CX

The list above is for reference. We recommend verifying the dimensions on your machine before purchasing.

Service Recommendation: Ensure Maximum Lifespan

For a comprehensive and durable repair, always replace kingpost bushings in a set with new pins and seals. Regular greasing of the joints with high-quality HYPTRON grease containing molybdenum disulfide (MoS2) drastically extends the life of the bushings.

Part's Role in the Machine and Failure Diagnostics

Bushings are sacrificial components designed to wear out to protect much more expensive parts like the kingpost or the backhoe boom. Ignoring worn bushings leads to play, which in turn damages the pin bores (causing them to become oval), ultimately requiring a very expensive re-boring repair.

Replace the bushings if you notice:

  • Excessive play (clunking) on the main boom pin.
  • Loss of precision during digging, a "wobbly" bucket.
  • Loud squeaking or grinding from the joints, even after greasing.
  • A visible crack or displacement of the old bush.

Peace of Mind Guarantee: Why Choose Our Offer?

✓ Restore Precision and Rigidity: Choose CORESPEX

Play in the arm means a loss of precision and faster wear of the entire machine. As a leader in the supply of pins and bushings, we guarantee a perfect fit and the highest quality material. CORESPEX bushings, made of brass with optimal sliding properties, will restore your machine's factory rigidity and precision, which translates into work efficiency.

Tired of a "wobbly" backhoe and clunking noises?

Don't wait for play to damage expensive structural components. Order a complete set of CORESPEX pins and bushings today and perform a professional joint rebuild!

Expert's Guide: Key Installation Tips

  1. Check the bores: Before pressing in new bushings, thoroughly clean and inspect the bores in the kingpost. If they are worn oval, they need to be re-bored.
  2. Use a press: Use a hydraulic press with appropriate sleeves to install the bushings. Hammering them in can cause damage.
  3. Align grease channels: If the bush has grease holes or channels, make sure they align with the grease nipple after installation.
  4. Grease generously: After installation, pump in a large amount of fresh grease until it purges out, removing any contaminants from the assembly process.

Frequently Asked Questions (FAQ)

1. Why are kingpost bushings made of brass/bronze?

Copper alloys (brass, bronze) are used in very high-load, low-speed joints. These materials have excellent sliding properties and are more resistant to seizure in the event of a temporary lack of lubrication than a steel bush, which is crucial in such an important component as the boom slew.

2. I have play on the pin, but the old bush looks okay. Do I have to replace it?

Yes. Even if the bush is not cracked, the play indicates that its internal diameter has worn. Installing a new, tight pin in an old, worn bush will not eliminate the play and will lead to rapid wear of the pin. Both components should always be replaced at the same time.

3. What happens if I keep working with worn bushings?

Prolonged operation with loose pins causes the bores in the boom or kingpost to wear out. The holes become oval, and their repair is very expensive and requires specialized machining (a mobile line boring machine). Replacing bushings in time is the cheapest way to avoid this failure.

Key Advantages

🛡️

Working Precision

Eliminates play and restores arm rigidity.

🎯

Machine Protection

Protects expensive components from wear.

📦

High Durability

Brass resistant to abrasion and seizure.

Question mark

Have doubts or need confirmation to avoid costly downtime? Call us. Our experts will help you choose the right part to get your equipment back to work as soon as possible.

808/00363
808/00363
0.90 kg

Data sheet

SUITABLE FOR
JCB
MACHINE TYPE
BACKHOE LOADER
OEM NUMBERS
808/00363
MATERIAL
BRONZE
OUTER DIAMETER (MM)
70
INNER DIAMETER (MM)
50,9
HEIGHT (MM)
62
BUSH WITH COLLAR
NO

Specific References

MPN
808/00363
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Kingpost and boom arm bushing suitable for JCB 3CX 4CX

Catalog number: 808/00363
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Manufacturer

  • Serwis Kop Sp. z o.o. Sp. K.
  • Podkarpacka 57a
  • 35-082 Rzeszów
  • Poland
  • [email protected]
  • +48178643100

Responsible person

  • Serwis Kop Sp. z o.o. Sp. K.
  • Podkarpacka 57A
  • 35-082 Rzeszów
  • Poland
  • [email protected]
  • +48178643100
gross price

106.40 zł

net price
86,50 zł
Available in large quantity Temporarily unavailable
86,50 zł
net price

106.40 zł

gross price
Nie możesz dodać więcej produktów
  • You will receive 9 points, it gives you 3.60 zł
  • Lowest price from 30 days before the discount: 106.40 zł
    PRODUCT SPECIFICATION
    SUITABLE FOR
    JCB
    MACHINE TYPE
    BACKHOE LOADER
    OEM NUMBERS
    808/00363
    MATERIAL
    BRONZE
    OUTER DIAMETER (MM)
    70
    INNER DIAMETER (MM)
    50,9
    HEIGHT (MM)
    62
    BUSH WITH COLLAR
    NO

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    Available in large quantity Temporarily unavailable
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  • You will receive 5 points, it gives you 2.00 zł
  • Nie możesz dodać więcej produktów

    WE OFFER PRODUCTS OF THE BEST BRANDS

    SERWIS KOP Sp. z o.o. Sp.k.
    ul. Podkarpacka 57A, 35-082 Rzeszów
    NIP: 813-352-97-49 REGON: 180286726

    Opening hours
    Telephone support - Monday - Friday (8:00 AM – 5:00 PM)
    Order pick-up - Monday - Friday (8:00 AM – 4:30 PM)

    Email



    Gadu-Gadu communicator
    GG: 4185846 - Daniel
    Phone
    +48 17 864 31 00
    +48 17 864 00 24
    +48 17 864 25 96

    Mobile phone
    +48 607-700-547
    +48 695-944-818
    +48 691-330-531
    +48 690-906-751

    Fax
    +48 17 864 31 20