Wheel idler sprocket suitable for JCB 805 806 - 331/30581 mini excavators
JCB

Wheel idler sprocket suitable for JCB 805 806 mini excavators

Catalog number:331/30581D Nr OEM:331/30581 Manufacturer:JCB
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GENUINE JCB IDLER WHEEL (BARE) FOR 8052-8065 MINI EXCAVATORS - 331/30581

Technical Specification and Compatibility

A critical undercarriage component – this Genuine JCB idler wheel (bare) is designed for a wide range of 5-6.5 ton JCB mini excavators, including the popular 8052, 8055, 8056, 8060, and 8065 models. As a genuine part, it has been manufactured using a complex casting process and comprehensive heat treatment. This guarantees the highest tread durability against abrasion and core resistance to impact loads, even in the toughest working conditions. The idler guides the track chain and works with the tensioner to maintain correct track tension.

Part number: 331/30581
Alternative part numbers: 331/20054
Manufacturer: JCB (Genuine)
Type: Idler Wheel
Construction: Hardened Steel Casting

Genuine JCB product – a guarantee of the highest quality, perfect fit, and 100% compatibility with your machine.

Essential for Installation

  • › Yoke / Tensioner Assembly: This is a "bare" idler wheel. It mounts onto your existing tensioner yoke.
  • › Bearings and Seals: Depending on wear, you may need to replace the bearings and seals within the idler.

Application in machines

Brand Type / Series / Model
JCB Mini Excavators: 8052, 8055, 8055 RTS, 8055 ZTS, 8056, 8060, 8061, 8065, 8065 RTS, 8065 DL

The list above is for reference. It is crucial to verify the OEM part number or idler dimensions.

⚠️ Safety Warning

Working on track undercarriages is extremely dangerous. Use extreme caution when releasing and tensioning tracks. Track tension (grease) must be released before service. The machine must be securely supported on certified stands. Never rely solely on the machine's own hydraulics.

Part's Role in the Machine and Failure Diagnostics

The idler wheel is a fundamental undercarriage component. It has two roles: guiding the track chain onto the frame, and working with the spring and tensioner cylinder to maintain correct track tension. A failed idler will lead to de-tracking and accelerated wear of the entire undercarriage.

  • › Excessive wear on the running surface (tread), leading to the track falling off.
  • › Cracking of the wheel (usually from impact or material fatigue).
  • › Bearing failure (wheel "wobbles", makes noise, or seizes).
  • › Inability to set correct track tension.

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🔧 Expert's Guide: Key Installation Tips

  1. Check the Tensioner: Before mounting the wheel, inspect the entire tensioner assembly, including the yoke, grease cylinder, and spring.
  2. New Bearings: This is a "bare" idler (casting only). Always install it with a new set of bearings and seals to ensure long life.
  3. Clean Mounting: Thoroughly clean the tensioner shaft and yoke of all rust and dirt before assembly.
  4. Correct Track Tension: After assembly, set the correct track sag according to the service manual. An over-tensioned track places extreme load on the idler wheel and its bearings.

Frequently Asked Questions (FAQ)

1. What is the difference between an idler wheel and a sprocket?

The idler wheel (this part, 331/30581) is smooth, sits at the front of the undercarriage, and is used to guide and tension the track. The sprocket (drive wheel) has teeth, sits at the rear, and is connected to the final drive (travel motor) to propel the track.

2. Does this idler come with bearings?

This product is a "bare" idler (casting only). It typically does not include the bearings or seals, which must be purchased separately or transferred from the old wheel (which is not recommended).

3. Will this fit my JCB 8030ZTS?

No. This idler (331/30581) is for the 5-6.5T class machines (8052, 8060, 8065). The smaller 8030ZTS machine uses idler part number 233/26603.

Znak zapytania

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.

JCB
331/30581D
331/30581
32.00 kg

Data sheet

SUITABLE FOR
JCB
MACHINE TYPE
MINIEXCAVATOR
OEM NUMBERS
331/30581

Specific References

MPN
331/30581
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Wheel idler sprocket suitable for JCB 805 806 mini excavators

Catalog number: 331/30581D
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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

2,089.77 zł

net price
1699,00 zł
Temporarily unavailable
1699,00 zł
net price

2,089.77 zł

gross price
  • You will receive 170 points, it gives you 68.00 zł
  • Lowest price from 30 days before the discount: 2,089.77 zł
    PRODUCT SPECIFICATION
    SUITABLE FOR
    JCB
    MACHINE TYPE
    MINIEXCAVATOR
    OEM NUMBERS
    331/30581

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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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