Sanyi excavator SY700/750 idler group（61021657）china heavy duty excavator undercarriage part/OEM parts manufacture/idlers factory direct

 SY700/750 idler group（61021657）for SANYI  excavator heavy equipment.undercarriage parts manufacture-CQC/idlers factory direct

SANY SY700 Excavator Idlers – Heavy-Duty Track Rollers for 70-Ton Mining & Construction

SANY SY700 idlers are precision-engineered undercarriage components designed for 70-ton class excavators, delivering reliable performance in demanding mining, quarrying, and large-scale construction applications. These heavy-duty rollers ensure optimal track alignment and load distribution for SY700 excavators operating in extreme conditions.

Key Features & Benefits

✔ High-Grade Alloy Steel Construction – Superior strength for 70-ton excavator loads
✔ Reinforced Double-Flange Design – Prevents track derailment in rough terrain
✔ Advanced Seal Technology – Multi-labyrinth + grease-purged seals for contamination protection
✔ OEM-Equivalent Quality – Direct replacement for SANY SY700/SY750 models
✔ Mining-Optimized – Hardened surfaces (HRC 50+) for extended abrasive wear resistance

Technical Specifications

Compatible Models

• SANY SY700C
• SANY SY750H
• SANY SY700H (Hybrid models)

Why Choose SY700 Idlers?

✅ Extended Service Life – 30% longer wear life vs. standard idlers
✅ Reduced Vibration – Precision-balanced for smoother operation
✅ Easy Maintenance – Grease fittings for simplified servicing
✅ Cost Efficiency – Competitive pricing with OEM performance

When to Replace SY700 Idlers?

⚠ Flange wear exceeding 25% of original thickness
⚠ Visible cracks or spalling on rolling surfaces
⚠ Irregular track movement or jumping
⚠ Bearing noise/rough rotation

Maintenance Recommendations

• Daily: Remove debris accumulation between flanges
• Every 250 hrs: Check bearing play (max 1.5mm tolerance)
• Every 1,000 hrs: Replenish grease (using EP-2 lithium complex)
• Replace in Sets: Minimum 3 idlers for balanced performance

Available Configurations

• Standard Duty (SD): General earthmoving/construction
• Heavy Duty (HD): Extra-thick flanges for mining applications
• Tungsten Carbide Coated (TCC): For extreme abrasion resistance

Upgrade Options

▸ Wear Indicator Kits – Laser-etched depth markers
▸ Remote Monitoring – RFID-enabled wear sensors
▸ Arctic Packages – -40°C low-temperature seals

Need a Custom Solution? Provide:

1. Machine serial number
2. Current idler measurements
3. Primary material handled (e.g., iron ore, granite, demolition debris)

Also available as part of complete SY700 undercarriage packages (sprockets + track chains + rollers).

For ultra-heavy mining applications, inquire about our SY700-XD Forged Idler Upgrade – combining forged durability with OEM fitment.