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E70B Track Roller Bottom Roller | 40Mn2 Forged Steel, Yellow Anti-corrosion Paint, High Wear Resistant Mini Excavator Undercarriage Component
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E70B Track Roller Bottom Roller | 40Mn2 Forged Steel, Yellow Anti-corrosion Paint, High Wear Resistant Mini Excavator Undercarriage Component
| Place of Origin | Fujian China |
| Brand Name | NF |
| Certification | ISO\CE\SGS |
| Model Number | E70B |
Product Details
Packing:
Wooden Case
Delivery Time:
3-30days
Quality:
High Guarantee
MOQ:
1 Piece
Condition:
New
Application:
Excavator
Highlight:
E70B track roller for mini excavator
,40Mn2 forged steel track roller
,yellow anti-corrosion paint track roller
Payment & Shipping Terms
Minimum Order Quantity
15 Piece
Packaging Details
Standard Export Wooden Package
Delivery Time
5-10 Days
Payment Terms
T/T, D/A, Western Union, L/C
Supply Ability
13000 pieces per month
Product Description
E70B Track Roller Bottom Roller
High-performance mini excavator undercarriage component manufactured from 40Mn2 forged steel with yellow anti-corrosion paint for superior wear resistance and durability.
E70B Excavator Track Roller Production Process
Raw Material Cutting & Forging
High-quality 40Mn2 alloy steel blanks are precision-cut using numerical cutting machines and undergo closed-die hot forging at 1100-1200°C. This process eliminates internal metal pores, enhances density, and improves impact resistance to prevent cracking under heavy loads.
Rough Machining
Forged track roller blanks are processed through CNC lathe rough turning to remove forging flash and excess material. This forms the outer circle, inner shaft hole, and flange positioning surfaces, establishing the foundation for precision machining.
Integral Heat Treatment
Core wear-resistant process featuring overall quenching and low-temperature tempering. Surface high-frequency induction hardening creates a uniform wear-resistant layer (HRC 48-55 hardness) while maintaining a tough inner core to resist impact fracture. This balance extends service life in demanding conditions.
Precision Finishing Machining
Precision turning and grinding of roller outer diameter, shaft journal, and seal installation grooves. Strict tolerance control ensures perfect compatibility with floating oil seals, preventing oil leakage and mud intrusion. Double flange surfaces are finely polished to minimize friction damage.
Seal Assembly & Oil Filling
Installation of imported floating oil seals, wear-resistant copper bushings, and high-strength roller shafts. High-viscosity gear lubricant is injected into the internal cavity for long-term self-lubrication without frequent maintenance.
Surface Anti-corrosion Treatment
Complete sandblasting removes oxide scale, followed by even application of yellow anti-rust epoxy paint. The thick protective layer isolates moisture, mud, and seawater, preventing rust during storage and outdoor operation.
Finished Product Inspection & Packaging
100% inspection for dimensional accuracy, hardness, sealing tightness, and oil leakage testing. Qualified E70B track rollers are wrapped in anti-collision plastic film and packed in wooden cases for secure sea transportation.
Compatible Machinery Models
| Brand/Type | Machinery Model Numbers |
|---|---|
| Komatsu PC | PC20, PC30-5, PC30-6, PC30-7, PC30-8, PC35, PC40, PC45, PC50, PC55, PC40-5, PC40-6, PC40-7, PC50, PC55, PC60-1, PC60-3, PC60-5, PC60-6, PC60-7, PC75, PC100-1, PC100-3, PC100-5, PC100-6, PC100-7, PC120-3, PC120-5, PC120-6, PC120-7, PC150, PC200-1, PC200-3, PC200-5, PC200-6, PC200-7, PC200-8, PC220-1, PC220-3, PC220-5, PC220-6, PC220-7, PC220-8, PC200LC-3, PC200LC-5, PC200LC-6, PC200LC-7, PC200LC-8, PC240, PC300-1, PC300-5, PC300-6, PC300-7, PC300LC, PC300LC-5, PC300LC-6, PC300LC-7, PC360-5, PC360-6, PC360-7, PC360LC-5, PC360LC-6, PC360LC-7, PC360LC-8, PC400-1, PC400-3, PC400-5, PC400-6, PC400-7, PC400LC-1, PC400LC-3, PC400LC-5, PC400LC-6, PC400LC-7, PC450-5, PC450-6, PC450-7, PC450LC-5, PC450LC-6, PC450LC-7, PC650, PC750, PC800, PC350 |
| Komatsu D | D20, D31, D37EX-21, D40, D41P-6, D41E-6, D50, D53, D51EX-22, D60, D65, D65-12, D61EX-12, D65EX-12, D65PX-12, D80, D85, D85EX-15, D85-21, D155, D155A-1, D155A-2, D155A-3, D155A-5, D155-6, D275, D355A-3, D375-5 |
| Caterpillar E/B/C/D | E200B, E200-5, E320D, E215, E320DL, E324D, E324DL, E329DL, E300L, E320S, E320, E320DL, E240, E120-1, E311, E312B, E320BL, E345, E324, E140, E300B, E330C, E120, E70, E322C, E322B, E325, E325L, E330, E450, E55, E70B, E120B, E312, CAT55, CAT225, CAT311, CAT312, CAT312B, CAT315, CAT320, CAT320C, CAT320BL, CAT330, CAT322, CAT245, CAT325, CAT320L, CAT973, CAT345, CAT345B, CAT320D, CAT330B, CAT330BL, CAT330C, CAT330D, CAT325B, CAT325BL, CAT345B |
| Caterpillar D | D3C, D4, D4D, D4E, D4H, D5, D5B, D5C, D5H, D5M, D5N, D6, D6C, D6D, D6R, D6H, D6T, D7G, D7R, D7H, D8N, D8L, D8T, D8R, D8H, D8K, D9L, D9N, D9R, D9T, D10N, D10R, D10T, D11N, D11R |
| Hitachi EX | EX30, EX40, EX55, EX60, EX60-2, EX60-3, EX60-5, EX70, EX75, EX100, EX100-3, EX100-5, EX120, EX120-1, EX120-3, EX120-5, EX130-1, EX200-1, EX200-2, EX200-3, EX200-5, EX220-3, EX220-5, EX270, EX300, EX300-1, EX300-2, EX300-3, EX300-5, EX300A, EX330, EX370, EX400-1, EX400-2, EX400-3, EX400-5, EX200LC-1, EX200LC-2, EX200LC-3, EX200LC-5, EX270-1, EX270-2, EX270-5, EX270LC-1, EX270LC-2, EX270LC-5, EX300LC-1, EX300LC-2, EX300LC-3, EX300LC-5, EX400LC-1, EX400LC-2, EX400LC-3, EX400LC-5, EX450, EX450-1, EX450-2, EX450-3, EX450-5, EX450LC-1, EX450LC-2, EX450LC-3, EX450LC-5, UH07-7, ZAX30, ZAX55, ZAX200, ZAX200-2, ZAX330, ZAX450-1, ZAX450-3, ZAX450-5, UH043, UH052, UH053, UH07, UH081, UH082, UH083 |
| Zaxis ZAX ZX | ZAX55, ZAX70, ZAX120, ZAX200, ZAX210, ZAX230, ZAX240, ZAX330, ZAX450, ZAXIS 110, ZAXIS 120, ZAXIS 60, ZAXIS 200-3, ZAXIS 200-6, ZAXIS 240, ZAXIS 270, ZAXIS 330, ZAXIS 360, ZAXIS 870 |
| Volvo EC | DH55, DH60, DH80, DH130, DH150, DH200, DH220, DH258, DH280, DH300, DH320, DH360, DH370, DH400, DH420, DH500, DX300, DX370, DX380 |
| Daewoo DH / Doosan DX | DH55, DH60, DH80, DH130, DH150, DH200, DH220, DH258, DH280, DH300, DH320, DH360, DH370, DH400, DH420, DH500, DX300, DX370, DX380 |
| Kobelco SK | SK35, SK55, SK60-1, SK60-2, SK60-5, SK100, SK120, SK130-8, SK200-3, SK200-5, SK200-8, SK210, SK230, SK250, SK300, SK320, SK330, SK350, SK07N2 |
| Sumitomo SH / LS | SH35, SH55, SH60, SH65, SH75, SH100, SH120, SH120A3, SH200, SH220, SH265, SH280, SH300, SH320, SH340, SH350, SH430, LS2800 |
| Sany SY | SY65, SY90, SY130, SY200, SY215, SY330, SY335, SY365 |
| Kato HD | HD250, HD400, HD450, HD700, HD770, HD820, HD1023, HD1250, HD1430, HD800, HD1100 |
| Hyundai R | R55, R60, R80, R130-5, R130-7, R150, R150LC-7, R200, R200-5, R210, R210-3, R210-7, R215-7, R220-5, R220-5, R225-7, R260-5, R265, R275, R290, R300, R300-5, R305, R320, R360, R385, R420, R450-3, R450-5 |
| Sunward SWE | SWE35, SWE40, SWE50, SWE55, SWE60, SWE70, SWE85, SWE330 |
| Yuchai YC | YC35, YC45, YC60, YC85, YC135 |
| Kubota KX | KX35, KX50, KX55, KX80, KX85, KX135, KX155, KX185 |
| Liebherr R | R914, R916, R924, R926, R934C, R944C, R954, R964/R974 |
All manufacturer's names, symbols and descriptions are used for reference purposes only, and it is not implied that the part listed is the product of these manufacturers.
Frequently Asked Questions
Are you a trading company or a manufacturer?
We operate a "Manufacturer +" model. We are the direct manufacturer of Fasteners (via our 25-year family-owned factory) and strategic equity partners for Undercarriage Parts. You get factory-direct prices with professional export service.
How do you guarantee product quality?
Quality is our first priority. We use premium 40Cr/35CrMo steel with precise heat-treatment. Every batch undergoes strict inspections (hardness, dimensions, visual) before leaving our Changsha/Quanzhou warehouses. Material certificates and warranties are provided.
How can I ensure the parts fit my machine?
Simply provide the machine model, part number, or serial number. For non-standard parts, just send us the dimensions or drawings.
What are your delivery time and MOQ?
Thanks to our dual warehouses (Changsha & Quanzhou), we offer flexible support: Delivery: 3-7 days for in-stock items; 20-30 days for mass production. MOQ: Highly flexible. Usually 100-500 pcs for bolts, and 10-20 pcs for undercarriage parts. Tip: Mixing parts in one pallet is recommended to save shipping costs.
How is the packaging?
We ensure 100% safe arrival. All goods are packed with export-standard heavy-duty protection. We prioritize waterproof sealing and robust palletizing to strictly prevent rust and damage during long-distance sea shipping.
What are your payment terms and loading ports?
Payment: T/T (30% deposit, 70% balance before shipment) or L/C at sight. Ports: We ship from Xiamen or any Chinese port, giving us the flexibility to choose the fastest global routing for you.
Contact Information
WhatsApp: +375 (25) 660-12-83
WeChat: +86 13655959125 / 15860377809
Email: cai@nanfengmachinery.com
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Contact Us at Any Time
13655959125
No. 506, Zikeng, Si Huang Village, Xiamei Town, Nan'an City, Quanzhou City, Fujian Province, China
