Wear Resistance Excavator Track Roller Earthmoving Excavator Track Roller For Wetland Operations
| Attribute | Value |
|---|---|
| Model No | EX100 |
| Outer Diameter | 240±2 mm (varies by manufacturer) |
| Width | 105±1 mm |
| Shaft Diameter | 50±0.02 mm(quenched, surface hardness HRC55-60) |
| Mounting Holes | 180±0.5 mm center-to-center, M16×1.5 threaded bolts |
| Weight | 28-32 kg (varies by material/seals) |
| Static Load | ≥85 kN |
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).
- Distributes machine weight to reduce ground pressure
- Guides track chain movement, minimizing friction and wear
- Enhances travel stability and prevents track derailment
| Parameter | Specification |
|---|---|
| Outer Diameter | 240±2 mm (varies by manufacturer) |
| Width | 105±1 mm |
| Shaft Diameter | 50±0.02 mm (quenched, surface hardness HRC55-60) |
| Mounting Holes | 180±0.5 mm center-to-center, M16×1.5 threaded bolts |
| Dynamic Load | ≥35 kN (tested per ISO 6014) |
| Static Load | ≥85 kN |
| Weight | 28-32 kg (varies by material/seals) |
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).
- 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)
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.
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
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).
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