Carrier Rollers

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Website: http://constructionparts-en.com/1-2-carrier-rollers.html

Heavy Equipment Undercarriage Parts

Our carrier rollers are engineered for reliable performance under the most demanding working conditions. Designed to withstand both high and low temperature extremes, they maintain stable operation across a wide range of harsh environments. The rollers are well-suited for use in mining operations such as coal mines, stone quarries, aluminum mines, river sand extraction, jade mining, and gold mining, where uneven terrain and abrasive materials create constant challenges.

Machinery Type

1. Excavator Carrier Rollers
2. Komatsu
  Excavator :PC200 PC300 PC400 PC800 PC1250 PC2000 PC3000
  
  Caterpillar
  Excavator: E320 E325 E330 E336 E345 E350 E365 E375 E390
  
  Hitachi
  Excavator: EX200 EX300 EX400 ZX470 ZX870 EX1200 EX1900 EX2600
  
  Volvo
  Excavator: EC210 EC290 EC360 EC480 EC700 EC750 EC950
1. Bulldozer Carrier Rollers
2. Komatsu
  Bulldozer: D20 D31 D39 D50 D65 D85 D155 D275 D375 D475
  
  Caterpillar
  Bulldozer: D5 D6 D7 D8 D9 D10 D11

Extended Service Life and Superior Durability

Our carrier rollers are built with advanced materials and manufacturing processes to ensure long-term durability and stable operation:

The roller body is made from forged 40MnB2 high wear-resistant boron steel, heat-treated to a surface hardness of HRC 48-55, with a hardening depth of 8-10mm for excellent wear resistance.
The center shaft is forged from 42CrMo alloy steel, heat-treated to a surface hardness of HRC 48-55, with a core hardness above HRC 28, ensuring both wear resistance and resistance to fracture under heavy loads.
The shaft surface is precision polished using CNC machining, which reduces internal wear on the copper bushings during operation.
Pure copper bushings are used internally to further enhance wear resistance, and high-density sealing rings are applied to effectively protect internal components from dust, sand, and moisture intrusion.

Manufacturing Process

We manufacture carrier rollers strictly in accordance with original specifications, utilizing high-precision CNC machining to ensure dimensional accuracy and consistent fitment with the original parts.
Our carrier rollers are assembled utilizing friction welding, a process that requires high-grade material strength to prevent defects such as cracking, porosity, or leakage, which may occur when using inferior raw materials. Friction welding is recognized as a modern, environmentally friendly welding method, improving both structural integrity and overall product appearance while eliminating harmful emissions during production.

After high-precision CNC lathe machining, the carrier roller body surface is smoother, ensuring stable operation and reduced internal wear.
The roller body undergoes heat treatment, achieving a surface hardness of HRC 48-55 with a hardening depth of 8-10mm, delivering excellent wear resistance.
The internal surface of the roller body is smooth and designed to be dust free, protecting internal components during operation.

Unlike conventional welding, which may cause cracking, porosity, or leakage, friction welding avoids these issues while improving the appearance and structural consistency of the roller body.
The center shaft is forged from 42CrMo alloy steel, with a surface hardness of HRC 48-55 and core hardness above HRC 28, offering both high wear resistance and fracture toughness.
Pure copper bushings are used internally, providing superior temperature resistance and wear performance under continuous operation.
The copper bushings are securely riveted to the shaft, preventing loosening and ensuring long-term stability during extended service.

Packaging

Are aftermarket excavator carrier rollers compatible with OEM brands like Caterpillar, Komatsu, Hitachi, or Volvo?

Yes. Our excavator carrier rollers are manufactured according to the original specifications for major brands such as Caterpillar, Komatsu, Hitachi, and Volvo, following strict 1:1 dimensional standard to ensure proper fitment across various models.

Can I order high-hardness carrier rollers for mining applications?

Yes. Our carrier rollers are made from forged 40MnB2 steel, with surface hardness reaching HRC 48-55 and a hardening depth of 8-10mm. These rollers are highly suitable for demanding mining operations, including coal mining, gold mining, and quarrying, where maximum durability is required.

Do aftermarket carrier rollers include copper bushings for better wear performance?

Yes. We use precision CNC-machined pure copper bushings combined with hardened 42CrMo shafts to reduce friction and wear. This combination extends service life even under extreme working conditions.

Can I purchase a complete undercarriage set (carrier rollers, track rollers, idlers, etc.)?

Yes. We offer complete undercarriage kits, including carrier rollers, track rollers, idlers, and other undercarriage components. This helps ensure full compatibility and reduces both procurement and maintenance costs.

Is it possible to customize a carrier roller based on old samples?

Yes. We support custom manufacturing based on samples or technical drawings provided by service centers or repair shops, ensuring precise dimensional and material matching for replacement parts.

Do you offer bulk orders and unified after-sales management for service centers?

Yes. We accept bulk orders and provide centralized after-sales support, making it ideal for large repair companies or distributors that require reliable logistics, consistent inventory, and warranty service management.

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