A critical undercarriage component – this Genuine JCB top roller (carrier roller) is designed for a wide range of 2.5 - 4 ton JCB mini excavators, including the highly popular 8025ZTS, 8030ZTS, 803, and 804 models. As a genuine part, it has undergone a complex casting process and comprehensive heat treatment. This guarantees high durability of the tread against abrasion and core resistance to impact loads, even in the toughest working conditions.
Genuine JCB product – a guarantee of the highest quality, perfect fit, and 100% compatibility with your machine.
| Brand | Type / Series / Model |
|---|---|
| JCB | Mini Excavators: 802, 802 Super, 802.4, 802.4 Super, 802.5, 802.6, 802.7, 802.7 Plus, 802.7 Super, 8025ZTS, 8026, 8027Z, 8029, 803, 803E, 803 Magnum, 803 Plus, 803 Super, 8030ZTS, 8032Z, 8035ZTS, 804, 804 Plus, 804 Super, JS30, 55Z-1 |
The list above is for reference. It is crucial to verify the OEM part number or roller dimensions.
Working on track undercarriages is extremely dangerous. Use extreme caution when releasing and tensioning tracks. Track tension must be released before service. The machine must be securely supported on certified stands. Never rely solely on the machine's own hydraulics.
Top rollers (carrier rollers) support the upper run of the track chain. They prevent the chain from sagging, striking the undercarriage frame, and reduce noise, vibration, and wear on the track links.
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Both rollers fit a similar range of machines (e.g., 8025, 8030). The top roller (this item, 332/S4308) supports the chain from the top to prevent it from sagging. The bottom roller (331/32806) is on the bottom and carries the entire machine's weight. They have different designs and are not interchangeable.
2. Is this roller maintenance-free?Yes. Genuine JCB rollers are factory-filled with oil and equipped with durable, heavy-duty seals that provide lubrication for their entire service life. They do not require regular greasing.
3. Will this fit my large JS220 excavator?No. This roller is a mini-excavator part for the 8025-8035 series. A large JS220 excavator uses a much larger top roller, such as part number 331/42441.
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.
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