Pivot pin - Stabiliser foot suitable for JCB 3CX 4CX
GX-AFTER

Pivot pin - Stabiliser foot suitable for JCB 3CX 4CX

Catalog number:SKX877341A Nr OEM:811/90590 Manufacturer:GX-AFTER
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Lower Stabilizer Pin (Foot Pin) suitable for JCB - 811/90590

Technical Specification and Compatibility

A key element of the stabilizer system, the 811/90590 lower support pin by GX-AFTER. This is a precision-machined pin used to attach the stabilizer pad (foot) to the stabilizer leg in JCB 3CX and 4CX backhoe loaders. Its dimensions – 138 mm length and 44.95 mm diameter – ensure a perfect fit and a secure pivot joint for the foot.

Part Number: 811/90590
Alternative Numbers: 811/50530
Type: Lower Stabilizer Pin / Stabilizer Foot Pin
Length: 138 mm
Diameter: 44.95 mm

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

Features of the 811/90590 Pin

High Strength: Made from hardened steel, resistant to shearing and high point loads from the stabilizer foot.
Perfect Fit: 44.95 mm diameter ensures a tight fit in the bushings, eliminating stabilizer slop.
Corrosion Resistance: Pin surface is protected against pitting corrosion, which simplifies future disassembly.
Critical for Stability: As the lower pivot point, this pin transfers the entire stabilizing load from the machine to the ground.

Application in machinery

Brand Type / Series / Model
JCB Backhoe Loaders: 3CX, 4CX

The list above is for reference. It is crucial to verify the dimensions (44.95 x 138 mm) in your machine.

Related Parts and Hardware

When replacing pin 811/90590, it is crucial to inspect (and usually replace) the bushings in the stabilizer leg and foot. A new pin retainer (e.g., lynch pin) is also required.

⚠️ Safety Warning

Failure of this pin (cracking, shearing, or falling out) is extremely dangerous. It can lead to the sudden collapse or slippage of the stabilizer foot during operation. This causes an immediate loss of machine stability, which risks overturning the machine, especially when digging on a slope or lifting heavy loads.

Part Role in the Machine and Failure Diagnostics

Pin 811/90590 serves as the hinge or lower pivot point for the stabilizer foot (pad). It allows the foot to articulate and adapt to uneven ground, while simultaneously transferring all the stabilizing pressure (often many tons) from the stabilizer leg to the foot and into the ground. It is one of the highest-load pins on the machine.

  • › Audible and palpable play (knocking) of the foot on the stabilizer leg.
  • › Ovalization of the holes in the foot or leg (result of working with a loose pin).
  • › Visible fatigue cracks or deep pitting corrosion.
  • › Visible wear ("scarfing") or reduction in the pin's diameter.

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🔧 Expert Guide: Key Installation Tips

  1. Verify Dimensions: Ensure the pin diameter is 44.95 mm (not 45 mm) and the length is 138 mm.
  2. Replace Bushings: Installing a new pin into old, worn (oval) bushings is pointless. Always replace pins and bushings together to eliminate play.
  3. Clean Installation: Thoroughly clean the bushing housings and pin bores of rust, dirt, and old grease.
  4. Generous Lubrication: Before installation, generously lubricate the pin and bushings with heavy-duty grease (e.g., EP2).
  5. New Retainer: Always use a new, strong retainer (lynch pin or bolt) to prevent the pin from sliding out during operation.

Frequently Asked Questions (FAQ)

How is this (lower) pin different from the upper pin?

The lower pin (811/90590) connects the foot (pad) to the stabilizer leg. The upper pin connects the stabilizer leg to the machine's frame (sideshift). They are two different pins with different dimensions and part numbers.

Why is the diameter 44.95 mm and not 45 mm?

This is intentional (a clearance fit). The pin must be slightly smaller than the nominal 45 mm hole to allow for installation. The 44.95 mm diameter provides the correct running clearance for grease.

Is 811/50530 the same part?

Yes, it is an alternative (superseded) number. 811/90590 is the newest, current part number for this pin.

Question mark

Do you have doubts or need confirmation to avoid costly downtime? Call us. Our experts will help you select the right part to get your equipment back to work as quickly as possible.

SKX877341A
811/90590
1.66 kg

Data sheet

SUITABLE FOR
JCB
MACHINE TYPE
BACKHOE LOADER
OEM NUMBERS
811/90590 / 811/50530
OUTER DIAMETER (MM)
44,95
LENGTH (MM)
138
PIN WITH COLLAR
NO

Specific References

MPN
811/90590
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Pivot pin - Stabiliser foot suitable for JCB 3CX 4CX

Catalog number: SKX877341A
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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

34.44 zł

net price
28,00 zł
Temporarily unavailable
28,00 zł
net price

34.44 zł

gross price
  • You will receive 3 points, it gives you 1.20 zł
  • Lowest price from 30 days before the discount: 34.44 zł
    PRODUCT SPECIFICATION
    SUITABLE FOR
    JCB
    MACHINE TYPE
    BACKHOE LOADER
    OEM NUMBERS
    811/90590 / 811/50530
    OUTER DIAMETER (MM)
    44,95
    LENGTH (MM)
    138
    PIN WITH COLLAR
    NO

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    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

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    Order pick-up - Monday - Friday (8:00 AM – 4:30 PM)

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