Hitachi EX70 Carrier Roller Excavator Smooth Finish
Brand Name:Hitachi
Model Number:EX70
Minimum Order Quantity:1000
Delivery Time:Within 20 days after contact established.
Payment Terms:T/T
Place of Origin:Quanzhou.Fujian.China
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No.23 Binjiang Avenue,Nan'an City,Fujian Province,China
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Products Description
1. Product Overview
Compact Hitachi Ex70 Carrier Roller Excavator Is A Critical Component That Supports The Weight Of The Excavator And Ensures Smooth Movement.
Hitachi Ex70 Carrier Roller Key Features
Durable Construction: Designed For Heavy-Duty Performance, The
Carrier Roller Is Built To Withstand Tough Working Conditions.
Enhanced Stability: Provides Stability During Operation, Allowing
For Better Lifting And Digging Performance.
Easy Maintenance: The Design Facilitates Easy Access For
Maintenance And Replacement, Reducing Downtime.
Compatibility: Specifically Designed For The Hitachi Ex70 Model,
Ensuring Optimal Performance And Fit.
- Model: EX70
- Type: Track Roller (Bottom Roller / Carrier Roller)
- Compatibility: Designed for EX70-series excavators and small tracked construction machinery. May also fit equivalent models (e.g., Komatsu PC70, Caterpillar equivalents – verify before application).
Product name | Excavator / Bulldozer Front Idler ,Excavator Idlers ,Track Idler | |||
Material | 50Mn/40MnB | |||
Finish | Smooth | |||
Colors | Yellow or Black & Customized | |||
Technique | Main Forging | |||
Surface Hardness | HRC48-54 / HRC51-58 / HRC52-60 & Customized | |||
Warranty time | 2000hours | |||
Certification | ISO9001-9002 | |||
Delivery Time | Within 20 days after contact established. | |||
Package | Standard exported wooden pallet Fumigate seaworthy packing | |||
OEM&ODM | Acceptable | |||
Payment Term | T/T | |||
Business Scope | Bulldozer & excavator undercarriage parts , bucket,arm,mini
excavator etc.. | |||
The ex70 casters are suitable for models such as EX60-2/3/5, EX80-5, ZX75, ZX75UR, ZX75US-A, EX70,LG906/907/908 and ME75
- 2.Key Specifications
- Dimensions:
- Outer Diameter: φ180-200mm (varies by design)
- Width: 80-100mm
- Shaft Diameter: φ40-50mm
- Mounting Hole Spacing: Customized based on track gauge.
- Material:
- Roller Body: High-strength alloy steel (42CrMo or equivalent), hardened surface (HRC50-55).
- Shaft: Carbon steel, chrome-plated for corrosion resistance.
- Seals: Dual-seal system (NBR rubber + metal ring).
- Load Capacity:
- Dynamic Load: ≥5 tons
- Static Load: ≥8 tons
3. Structural Features
Sealing System:
Labyrinth seal + floating oil seal design, preventing mud, water, and debris ingress.
Lubrication: Lithium-based grease-filled for extended service intervals.
Bearing Type:
Tapered roller bearings or deep groove ball bearings (model-dependent), high-load resistant.
Surface Treatment:
High-frequency induction hardening, depth 2-3mm, service life ≥3000 hours.
4. Operating Conditions
Suitable for earthwork, gravel, and light mining operations.
Temperature Range: -30°C to +80°C.
5. Maintenance & Replacement
- Replacement Interval: Inspect every 2000-3000 operating hours; replace immediately if abnormal noise or oil leakage occurs.
- Installation Torque: Shaft nut torque 180-220 N·m (refer to OEM manual).
6. Packaging & Warranty
- Packaging: Individually packed in wooden crates with anti-rust oil coating.
- Warranty: 12 months (excluding misuse or overload damage).
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Hitachi EX70 Carrier Roller Excavator Smooth Finish
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