Carrier Roller

Types of Carrier Roller Available

Carrier rollers, also known as top or upper rollers, support the track chain on excavators, bulldozers, and cranes to reduce wear and ensure smooth operation. Below is a list of each product with its name and a short description.

JCB Carrier Roller JCB200 JCB220 JCB240 JCB260 JCB300
High-quality carrier roller for JCB excavators models JCB200, JCB220, JCB240, JCB260, and JCB300, made from 50Mn steel with smooth finish and HRC50-56 surface hardness for durability up to 2000 hours.

Sell OEM Steel Carrier Roller PC60-7 Excavator Mini Roller
Steel carrier roller designed for Komatsu PC60-7 mini excavator, providing reliable support for upper track with OEM compatibility.​

BD2G BD2F Carrier Roller Top Roller
Carrier roller compatible with Mitsubishi BD2G and BD2F dozers, featuring single flange design and pitch 135mm track chain support for robust performance.​

JCB Top Roller JCB200 JCB220 JCB240 JCB260 JCB300
Durable top roller for JCB series including JCB200 to JCB300, forged from 50Mn material with forging casting technique and 2000-hour warranty.

D4 Carrier Roller Part Number 6K9880/3K7962/6K9879
Upper carrier roller for Caterpillar D4H/D4D/D4E bulldozers, constructed from 50Mn steel for smooth operation and extended wear resistance.​

Mini Excavator Carrier Roller for Kobelco SK045/SK045SR/SK50SR/SK70SR
Top roller for Kobelco mini excavators SK045, SK045SR, SK50SR, and SK70SR, forged 50Mn steel with HRC50-56 hardness and 2000-hour lifespan.​

PC200-7 Carrier Roller Up Roller For Excavator Bulldozer
Up roller for Komatsu PC200-7 excavators and bulldozers, using 40Mn2/50Mn forged body with HRC48-55 heat treatment for superior track support.​

Crawler Crane KH150-2 Carrier Roller
Carrier roller tailored for Hitachi KH150-2 crawler crane undercarriage, ensuring stable track movement in heavy lifting operations.​

Carrier Rollers Bracket zx200 Excavator pc200-8 in Construction Parts
Bracket-mounted upper roller compatible with Hitachi ZX200 and Komatsu PC200-8 excavators, made from 50Mn/40MnB for construction site reliability.​

D155 Bulldozer Carrier Roller
Carrier roller for Komatsu D155 bulldozer, using special steel and advanced processes for high compressive and tension resistance, promoting steady operation.​

PC1200 Carrier Roller for KOMATSU Excavator
Bottom track roller for large Komatsu PC1200 excavator, designed for heavy-duty undercarriage support and track chain stability.

Premium Materials in Our Carrier Rollers

XMGT’s high quality carrier rollers start with superior materials engineered for extreme conditions.

• High-Strength Steel Alloys: We use 50Mn or 40SiMnTi alloy steel for the main body, forged from solid bars for unmatched tensile strength. This resists bending under loads up to 50 tons.
• Cast Iron Options: For heavy-duty 
• excavator carrier rollers, cast iron shells provide exceptional wear resistance, ideal for rocky sites.
• Advanced Shaft Materials: High-manganese steel shafts endure shock loads, paired with bronze bushings for low-friction rotation.

Our steel carrier roller excavator components undergo rigorous testing to meet ISO 9001 standards, ensuring they outlast competitors by 30-40%.

Heat Treatment Process for Superior Durability

What sets XMGT apart as an excavator carrier roller supplier is our multi-stage heat treatment:

1. Forging: Alloy steel bars form the wheel body via high-pressure forging, creating a dense, crack-resistant structure.
2. Heating and Quenching: Heated to 850-900°C, then oil-quenched for a surface hardness of HRC 50-58. This hardened shell fights abrasion from sand, gravel, and tracks.
3. Tempering: Controlled reheating relieves internal stresses, balancing hardness with toughness to prevent brittle failure.
4. Shaft Finishing: Quenching and tempering on shafts yield a Rockwell C 45-52 exterior over a ductile core, optimizing load distribution.

Seals feature triple-lip designs with O-rings, filled with lithium grease for maintenance-free operation up to 2,000 hours. These carrier rollers for excavator innovations reduce downtime, making us the go-to carrier roller supplier.

Applications and Compatibility

XMGT supplies undercarriage carrier rollers compatible with top brands:

• Excavators: Caterpillar (CAT 320, 336), Komatsu (PC200, PC300), Hitachi (ZX200, ZX350), Volvo (EC210, EC300), Kobelco, Doosan, Hyundai, Sany, and LiuGong.
• Industries: Construction sites, quarries, mining operations, forestry, and demolition projects.

Our carrier roller replacement parts fit mini (1-10 ton) to large (50+ ton) machines, with custom bores from 45mm to 140mm. Whether you’re running a top roller on wet clay or dry sand, our high quality carrier roller delivers.

Benefits of Choosing XMGT Carrier Rollers

Switch to XMGT excavator carrier rollers for tangible gains:

• Extended Undercarriage Life: Proper top track support prevents premature sprocket and idler wear.
• Fuel Efficiency: Smooth rolling cuts energy loss by 10-15%.
• Cost Savings: Wholesale pricing and 20-30% longer life slash total ownership costs.
• OEM-Quality Assurance: Partnerships with BERCO, ITM, ITR ensure specs match originals.
• Global Availability: Fast shipping to 100+ countries as reliable excavator carrier roller suppliers.

Maintenance Tips for Carrier Rollers

Maximize your carrier roller lifespan with these steps:

1. Daily Checks: Inspect for uneven wear, cracks, or grease leaks.
2. Track Tension: Maintain 2-3% sag—too tight accelerates upper roller damage.
3. Cleaning: Blast off mud weekly to prevent seal failure.
4. Greasing: Every 50 hours for non-sealed models; ours are pre-greased.
5. Replacement Signs: Excessive play, noise, or track cupping signal time for carrier roller replacement parts.

Regular upkeep on track roller and carrier rollers can double undercarriage life.

How to Buy from a Trusted Carrier Roller Supplier

Ready for high quality carrier rollers? XMGT simplifies procurement:

• Request Quote: Email hocking@xmgt.net with model, quantity, and specs.
• Bulk Discounts: Volume orders qualify for 10-25% off.
• Samples Available: Test our steel carrier roller excavator risk-free.
• Warranty: 12-24 months on all carrier roller for excavator

As a premier carrier roller supplier, we collaborate with global leaders like BERCO and ITM, offering OEM undercarriage and G.E.T. parts. Contact us today for price lists, tech support, or custom solutions.

FAQ

What is a carrier roller?
A carrier roller, also known as a top roller or upper roller, supports the upper track run in an excavator’s undercarriage, preventing sagging and ensuring smooth operation.​

What’s the difference between carrier roller vs track roller?
Carrier rollers (top/upper) guide the upper track and handle lighter dynamic loads, while track rollers (bottom/lower) bear the machine’s full weight on the ground with heavier impacts.​

Why choose high quality carrier rollers?
High quality carrier rollers from suppliers like XMGT extend undercarriage life by 30-50%, reduce friction for better fuel efficiency, and minimize downtime through superior materials like 50Mn steel and heat treatment.​

How long do excavator carrier rollers last?
Quality carrier rollers last 1,500-3,000 hours, depending on terrain, maintenance, and load—longer with proper track tension and cleaning to avoid debris buildup.​

What materials are used in steel carrier rollers for excavators?
Premium models use forged 50Mn or 40SiMnTi alloy steel for the body, high-manganese steel shafts, and cast iron options for heavy-duty wear resistance, quenched to HRC 50-58.​

How to maintain undercarriage carrier rollers?
Check daily for leaks or wear, adjust track sag to 2-3%, clean mud weekly, grease every 50 hours, and replace at signs of play or noise to protect tracks and sprockets.​

Are XMGT carrier rollers compatible with major brands?
Yes, XMGT supplies OEM-quality carrier roller replacement parts for Caterpillar, Komatsu, Hitachi, Volvo, and more, with custom fits for 1-50+ ton excavators.​

How to buy from excavator carrier roller suppliers?
Contact hocking@xmgt.net for quotes, bulk discounts, samples, and 12-24 month warranties—fast shipping worldwide as a top carrier roller supplier.