Roller track top suitable for JCB JS140-220 excavators
KERTRACK

Roller track top suitable for JCB JS140-220 excavators

Catalog number:SKX050919KR Nr OEM:331/42441 Manufacturer:KERTRACK
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KERTRACK TOP ROLLER (CARRIER ROLLER) SUITABLE FOR JCB, CASE - 331/42441

Technical Specification and Compatibility

A critical undercarriage component – a brand new top roller (carrier roller) by KERTRACK. Designed for a wide range of JCB JS series excavators (from JS120 to JS260), CASE excavators (9020, 9030), and many other machines. Its purpose is to support the upper section of the track chain, preventing it from sagging excessively and reducing vibration during travel. The roller is a maintenance-free, oil-filled assembly secured with heavy-duty seals.

Part number: 331/42441
Alternative part numbers: JNA0067, KRA1267, 158774A1, 332/J3091, 333/J1359, C2612001M00, JNA0349, LK31, MMA80130, UH070R0A, VC261200
Type: Top Roller (Carrier Roller)
Body: Heat-treated steel casing
Bearings: Sealed shaft and bearings
Lubrication: Factory oil-filled (maintenance-free)
Seals: Heavy-duty seals

KERTRACK is a world leader in high-quality undercarriage components. By choosing KERTRACK rollers, you are investing in technology that guarantees maximum service life, excellent wear resistance, and a precision fit, minimizing downtime and operating costs.

Essential for Installation

  • › Mounting Bolts: It is recommended to use new, high-tensile bolts.

Application in machines

Brand Type / Series / Model
JCB Tracked Excavators: JS115, JS120, JS130 (HD, LC), JS140, JS145 (LC), JS150 (LC), JS160 (LC, NLC), JS180 (LC, NLC), JS190 (LC, NLC), JS200 (FC, LC, NC, SC), JS205 (ASIA, CH, LRCH, RUSSIA, SCCH), JS210 (LC), JS220 (LC, LONG REACH, NC, SC), JS235, JS240 (LC, NLC, SC), JS255, JS260 (LC, LONG REACH, NLC, NLC-XD, SC), JZ140 (LC), JZ235, JZ255
CASE 9020, 9020B, 9030
FIAT-KOBELCO / KOBELCO / MITSUBISHI Fits many models in a similar operating weight class (verify by cross-reference).

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

⚠️ Safety Warning

Before working on the undercarriage, ensure the machine is on stable, level ground and properly secured. Replacing rollers requires working under the machine - you must use certified jack stands. Never rely solely on the machine's hydraulic jack.

Part's Role in the Machine and Failure Diagnostics

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.

  • › Loud, metallic noise or squealing during travel (symptom of a seized bearing).
  • › Excessive vibration of the upper track section.
  • › Visible oil leak from the roller's seals.
  • › Uneven wear or "flat spots" on the roller surface (seized roller).

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🔧 Expert's Guide: Key Installation Tips

  1. Clean Mounting Surface: Before bolting on the new roller, thoroughly clean the mounting surface on the track frame of all rust, dirt, and old grease.
  2. New Bolts: Always use new, high-tensile mounting bolts and tighten them in a star pattern using a torque wrench to the manufacturer's specification.
  3. Inspect Chain: Check the condition of the track chain's inner link surfaces. If they are heavily worn or damaged, they will destroy the new top rollers.
  4. Correct Track Tension: An over-tensioned track places extreme load not only on the idlers and sprockets but also on the top rollers. Set the correct track sag.

Frequently Asked Questions (FAQ)

1. What is the difference between a top roller and a bottom roller?

A top roller (carrier roller) is located on top of the track frame and supports the weight of the returning, sagging section of the track. A bottom roller (track roller) is on the bottom and transfers the entire machine's weight to the track on the ground.

2. Is this roller maintenance-free?

Yes. This roller is factory-filled with oil and equipped with durable, heavy-duty seals that provide lubrication for its entire service life. It does not require regular greasing.

3. My roller is seized, but the surface looks okay. Do I need to replace it?

Yes, absolutely. A seized (non-rotating) roller acts as a brake on the track chain. This causes rapid, abrasive wear on both the roller (creating flat spots) and the track links, leading to a very fast and expensive failure of the entire undercarriage.

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.

SKX050919KR
331/42441
16.00 kg

Data sheet

SUITABLE FOR
JCB
MACHINE TYPE
EXCAVATOR
OEM NUMBERS
331/42441 / JNA0067 / KRA1267

Specific References

MPN
331/42441
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Roller track top suitable for JCB JS140-220 excavators

Catalog number: SKX050919KR
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gross price

343.79 zł

net price
279,50 zł
Temporarily unavailable
279,50 zł
net price

343.79 zł

gross price
  • You will receive 28 points, it gives you 11.20 zł
  • Lowest price from 30 days before the discount: 343.79 zł
    PRODUCT SPECIFICATION
    SUITABLE FOR
    JCB
    MACHINE TYPE
    EXCAVATOR
    OEM NUMBERS
    331/42441 / JNA0067 / KRA1267

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