Arm connecting pin suitable for JCB 801/802 mini excavator
GX-AFTER

Arm connecting pin suitable for JCB 801/802 mini excavator

Catalog number:SKX1022893A Nr OEM:811/50178 Manufacturer:GX-AFTER
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BOOM TO DIPPER PIVOT PIN SUITABLE FOR JCB MINI EXCAVATORS - 811/50178

Technical Specification and Compatibility

A high-quality main pivot pin, made of high-strength, induction-hardened steel. It is a key component of the joint connecting the main boom to the dipper arm. Its function is to bear the enormous forces generated during digging and to ensure smooth arm movement. Precision manufacturing and proper hardness guarantee maximum service life in the toughest working conditions.

Part number: 811/50178
Alternative part numbers: 811/90243
Length (mm): 175
Diameter (mm): 30
Material: Hardened Steel

GX-AFTER is the smart choice for your machine. We provide high-class replacement parts that combine excellent quality with an attractive price. Each part is carefully verified to ensure full compatibility and reliability you can depend on.

Essential for Assembly

  • › Arm bushings: For a complete rebuild of the joint and to ensure a tight fit.
  • › HYPTRON high-pressure grease: To protect the pin and bushings from seizing.

Application in machines

Brand (Machine Type) Model
JCB (Mini Excavators) 8014, 8015, 8016, 8017, 8018, 8020, MICRO

The list above is for reference. Before purchasing, we recommend verifying the dimensions on your machine.

⚠️ Safety Warning

Replacing pins in an excavator arm requires it to be immobilized and secured. Always use certified axle stands with an appropriate load capacity. Never rely solely on the machine's hydraulics. Use safety glasses and gloves.

Part's Role in the Machine and Failure Diagnostics

The pin is the pivot axis for the arm. A worn or cracked pin leads to play, which damages the bores in the arms (a "sloppy" joint), which in turn requires a very expensive re-boring repair.

  • › Excessive play (clunking) at the arm joint.
  • › Loss of precision during digging, a "wobbly" bucket.
  • › Loud squeaking or grinding from the joints, even after greasing.
  • › Visible displacement or cracking of the old pin.

Peace of Mind Guarantee: Why Choose Our Offer?

Ignoring play leads to wear in the arm bores.

The cost of re-boring worn-out holes is many times greater than the cost of a preventative replacement of pins and bushings. Protect your machine from expensive repairs – order a complete GX-AFTER set and restore the factory rigidity to the joints.

📞 Can't find the part you're looking for?

No problem. Our website shows only a few thousand of the over 60,000 parts we have in stock. Contact us – we probably have what you need on the shelf!

🔧 Expert's Guide: Key Installation Tips

  1. Replace as a set: Always replace the pin together with its bushings and seals to ensure a tight fit and long service life.
  2. Check the bores: Before installation, thoroughly clean and inspect the bores in the arms. If they are "sloppy" (oval), they must be re-bored.
  3. Use appropriate tools: Use a copper or brass hammer to drive pins in and out to avoid damaging the pin face.
  4. Grease generously: Before assembly, lubricate the pin and bushings. After assembly, pump in a large amount of fresh grease until it purges out.

Frequently Asked Questions (FAQ)

1. I have play on the arm. Will replacing this pin be enough?

This pin eliminates play at the key joint between the boom and dipper, but play can also come from other pivot points (e.g., ram mounts, kingpost, bucket). A full refurbishment requires checking and replacing all worn pins and bushings on the entire arm.

2. How can I check if a pin is worn?

A worn pin often has a visible "step" or an oval cross-section where it has been working in the bushing. You can measure it with a caliper in several places to check if its diameter is uniform along its working length.

3. What happens if I keep working with a worn pin?

Prolonged operation with a loose pin causes the bores in the arms to wear out. The holes become oval, and their repair is very expensive and requires specialized machining (a mobile line boring machine). In extreme cases, the pin can break, leading to a dangerous failure.

Key Advantages

🛡️

Working Precision

Eliminates play and restores arm rigidity.

🎯

Machine Protection

Protects expensive components from wear.

📦

High Durability

Hardened steel resistant to abrasion and cracking.

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.

SKX1022893A
811/50178
0.96 kg

Data sheet

SUITABLE FOR
JCB
MACHINE TYPE
MICRO
MINIEXCAVATOR
OEM NUMBERS
811/50178 / 811/90243
OUTER DIAMETER (MM)
30
LENGTH (MM)
175
PIN WITH COLLAR
NO

Specific References

MPN
811/50178
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Arm connecting pin suitable for JCB 801/802 mini excavator

Catalog number: SKX1022893A
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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

27.06 zł

net price
22,00 zł
Available in large quantity Temporarily unavailable
22,00 zł
net price

27.06 zł

gross price
Nie możesz dodać więcej produktów
  • You will receive 2 points, it gives you 0.80 zł
  • Lowest price from 30 days before the discount: 29.21 zł
    PRODUCT SPECIFICATION
    SUITABLE FOR
    JCB
    MACHINE TYPE
    MICRO
    MINIEXCAVATOR
    OEM NUMBERS
    811/50178 / 811/90243
    OUTER DIAMETER (MM)
    30
    LENGTH (MM)
    175
    PIN WITH COLLAR
    NO

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  • You will receive 1 points, it gives you 0.40 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



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