D155 Track Bottom Roller Heavy Duty Komatsu Bulldozer Undercarriage Support Roller

This heavy-duty D155 track roller is a premium D155 bottom roller, reliable Komatsu D155 track support roller and robust heavy duty bulldozer undercarriage roller. As a durable crawler track roller assembly and essential construction machinery track parts, it is a core bulldozer replacement undercarriage part for Komatsu D155 bulldozers. Adopting alloy cast steel body + double floating seal structure, it features excellent wear resistance and impact resistance. Effectively solves wheel wear, oil leakage, abnormal noise and track deviation. 1:1 OEM mounting size for direct replacement. Suitable for mining, quarry, forestry and heavy construction, ideal for repair shops, fleets and global parts dealers.

Core Technology

D155 track roller adopts mining-grade undercarriage manufacturing technology. Alloy steel integral casting with quenching & tempering improves overall hardness and toughness. Wheel surface intermediate frequency hardening forms deep wear-resistant layer. Built-in double floating seal with grease lubrication blocks mud and water intrusion. Each unit passes load test, rotation test and leakage test before delivery.

Product Usage

Special undercarriage replacement part for Komatsu D155 bulldozers. Widely used in open-pit mining, quarry operation, forestry clearing, road construction and large earthwork projects. Suitable for bulldozer repair workshops, engineering fleets and global machinery parts dealers.

Product Advantages

• ✅ Mining-grade Load Capacity: Heavy duty design, bears strong impact load of mining operations
• ✅ Super Wear Resistance: Quenched wheel surface, 2-3 times longer service life than ordinary parts
• ✅ Reliable Sealing: Double floating oil seal, prevents mud water intrusion and oil leakage
• ✅ Precise OEM Fit: 1:1 original size, direct installation without modification
• ✅ Smooth Operation: High precision machining, stable rotation, low running noise
• ✅ Cost-Effective: Factory direct supply, competitive price for bulk procurement

FAQ

Q1: Which bulldozer does this D155 track roller fit?

A1: It is specially designed for Komatsu D155 series crawler bulldozers, 1:1 OEM mounting size for direct replacement.

Q2: What symptoms indicate the track roller needs replacement?

A2: Severe wheel surface wear, oil leakage, abnormal running noise, track deviation and frequent track jumping.

Q3: Does this roller come with seal and bearing?

A3: Yes, it is a complete assembly with built-in bearing, floating seal and pre-filled grease, ready for installation.

Q4: How long is the service life in mining conditions?

A4: With quenched hardened wheel surface and double floating seal, it lasts 2-3 times longer than ordinary aftermarket parts under normal maintenance.