1. Product Overview

Model: EX100 Track Roller
Type: Undercarriage Support Roller for Crawler Machinery
Compatible Equipment: 20-30t class crawler excavators, bulldozers (e.g., Komatsu PC200, Caterpillar D6).
Primary Functions:

• Distributes machine weight to reduce ground pressure.
• Guides track chain movement, minimizing friction and wear.
• Enhances travel stability and prevents track derailment.

2. Technical Specifications

3. Materials & Manufacturing

Wheel Body: Forged 42CrMo alloy steel, tempered (HRC50-55), with induction-hardened rim (3-5mm depth, HRC58-62).

Bushing/Bearing:

Option 1: High-strength bronze bushing (CuZn25Al6) with self-lubricating grooves.

Option 2: Tapered roller bearings (NTN/SKF, ≥80% grease-filled).

Seals: Dual-lipped floating oil seals (NBR rubber + alloy steel ring), IP68-rated against dust/water ingress.

Lubrication: Standard 1/8" NPT grease fitting (NLGI Grade 2 lithium grease recommended).

4. Design Features

• Rim: Reinforced thickness (≥25mm per side), optional tungsten carbide overlay (HRC60+).
• Lubrication Channel: Internal direct oil passage for even grease distribution.
• Corrosion Protection: Phosphating + anti-rust oil coating (electro-galvanizing available on request).

5. Performance & Durability

Service Life:

Normal conditions (earthwork): ≥6,000 hours.

Harsh conditions (mining/rock): ≥4,000 hours (shorter lubrication intervals required).

Wear Resistance: Rim wear rate ≤0.1mm/100 hours (SAE J1995 standard).

Seal Integrity: No leakage after 500 hours in muddy/water-submerged environments.

6. Installation & Maintenance
Torque Requirements:

Mounting bolts: 240±10 N·m (thread locker recommended).

Grease pressure: ≤500 kPa (to avoid seal damage).

Lubrication Interval:

Heavy-duty: Every 250 hours.

Normal-duty: Every 500 hours (120ml per lubrication).

Replacement Criteria:

Rim thickness ≤18mm.

Axial play >2mm.

Grease leakage >5g/24h due to seal failure.

7. Applications & Compatibility

Recommended Use: Earthmoving, quarrying, wetland operations.

Track Compatibility: 500-600mm width, 2- or 3-grouser track shoes.

Interchangeability: Replaces equivalent rollers from Shantui, XCMG, etc. (verify shaft diameter/bolt pattern).

Specifications are based on industry standards. For OEM customization (e.g., material hardness adjustments), provide detailed operational requirements. Always refer to the manufacturer’s technical drawing (Part No. EX100-XXXX) for exact tolerances.