For 2nd Gen (>2018) — serial prefixes KEL, LHW, MGK, PFN, WCH, XNB
Shop premium 330 undercarriage parts for Caterpillar excavators equipped with a 2nd Gen (>2018) undercarriage. This guide helps you identify the correct 330 excavator undercarriage parts, 330 track chains, and 330 track rollers for the serial number ranges listed below. When calculating your 330 undercarriage rebuild costs, choosing the right components is essential for maximizing the service life of your machine.
Order normally. After ordering, provide your machine serial number through our Exact Fit Guarantee process and our team will verify compatibility before shipment.
➜ Ready to shop? Review the guide below, then browse the product listings for available 330 excavator undercarriage parts, pricing, and current availability.
CAT 330 Serial Prefix Guide
This guide covers the following Caterpillar 330 serial prefixes:
KELLHWMGKPFNWCHXNB
Track Specs: Pitch 8.00" | Link Height Standard
Common CAT 330 Undercarriage Components
The components below represent the most commonly replaced 330 undercarriage parts for machines with a 2nd Gen (>2018) setup. Click any linked component to view pricing and availability.
In addition to the major undercarriage components shown above, we may also offer mounting hardware, track hardware, idler hardware, track tensioning components, track guiding guards, seals, and related undercarriage parts.
Track Shoe Options: 330 track shoes are available in multiple width options depending on application.
➜ Ready to order? Browse the product listings below to view available Caterpillar 330 track chains, track shoes, rollers, idlers, sprockets, track tensioning components, hardware, pricing, and current availability.
What To Inspect During an Undercarriage Rebuild
Replacing Track Chains? Inspect track shoes, sprockets, rollers, and idlers.
Replacing Bottom Rollers? Inspect carrier rollers, idlers, and chain wear.
Replacing Idlers? Inspect recoil spring and track tensioning components.
Commonly Purchased Together
Replacing Track Chains?
Customers commonly inspect or replace:
Track shoes
Sprockets
Track hardware
Replacing Bottom Rollers?
Customers commonly inspect or replace:
Top carrier rollers
Front idlers
Track chain wear
Planning a Complete Undercarriage Rebuild?
A typical rebuild may include:
• Track chains
• Track shoes
• Bottom rollers
• Front idlers
• Carrier rollers
• Sprockets
Exact Fit Guarantee
Order with confidence. After placing your order, provide your machine serial number through our Exact Fit Guarantee process and our team will verify fitment before shipment. If a fitment issue is identified before shipment, we will work with you to ensure the correct parts are supplied.
What serial numbers are covered in the CAT 330 2nd Gen (>2018) undercarriage guide?
This guide covers Caterpillar 330 excavators with the following serial number prefixes: KEL, LHW, MGK, PFN, WCH, XNB. If your machine falls within these ranges, the components listed here are guaranteed to fit.
How many track links are in a CAT 330 2nd Gen (>2018) track chain?
The standard CAT 330 2nd Gen (>2018) configuration requires a 50 link track chain. Each machine requires two chains (one per side) for a complete replacement.
What is the standard track shoe width for a CAT 330 2nd Gen (>2018)?
The most common track shoe width for the CAT 330 2nd Gen (>2018) is 600mm. However, depending on your specific ground conditions, other widths may be available. This configuration uses 100 shoes per machine.
How many lower rollers does a CAT 330 2nd Gen (>2018) excavator have?
The CAT 330 2nd Gen (>2018) excavator is equipped with 18 lower rollers in total. Regular inspection of these rollers is critical for preventing premature track chain wear.
Does the CAT 330 2nd Gen (>2018) use top carrier rollers?
Yes, the CAT 330 2nd Gen (>2018) uses 4 top carrier rollers (2 per side) to support the track chain and maintain proper tension during operation.
What is the benefit of an 'Exact Fit Guarantee' for CAT 330 parts?
Our Exact Fit Guarantee means that every part we sell for the CAT 330 2nd Gen (>2018) is engineered to match OEM specifications. If a part does not fit your machine as specified, we will make it right.
How often should I check my CAT 330 2nd Gen (>2018) undercarriage?
We recommend a visual inspection every 10-20 operating hours and a detailed measurement of wear components every 250-500 hours to accurately track your 330 undercarriage rebuild costs.
Are CAT 330 1st Gen and 2nd Gen undercarriage parts interchangeable?
No. Caterpillar made significant changes to the undercarriage design between generations, including differences in pitch and link height. Always verify your serial number before ordering.
What are the signs that my CAT 330 2nd Gen (>2018) needs a rebuild?
Common signs include 'snaking' track chains, flattened roller surfaces, or sprocket teeth worn to a sharp point. Catching these early can significantly reduce your total 330 undercarriage rebuild costs.
Can I replace individual rollers or should I do them all at once?
While you can replace individual rollers, we generally recommend replacing all lower rollers at once if they show similar wear levels to ensure even weight distribution and longer component life.
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