Komatsu Dozer D275 Track Bottom Roller Supplier
This D275 bottom roller features a deep-hardened shell, precision-machined shaft, and improved sealing structure to provide stable undercarriage support and reduce wear on demanding bulldozer applications.
| Material | 50Mn/40MnB |
|---|---|
| Surface Hardness | HRC53-58,deepth: 8-12mm |
| Colors | Black or yellow or customized |
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Kinton Parts is trusted by professionals worldwide for delivering high-quality parts for excavators, bulldozers, and other construction machinery—with guaranteed performance and durability.
The Komatsu D275 is widely used in mining overburden removal, road construction, and large-volume earthmoving where machines operate for long hours and under constant structural stress. The bottom rollers bear a significant portion of that load—they support the track chain, absorb rolling impact, and keep the machine running smoothly on uneven terrain. This D275 bottom roller is designed to match those harsh conditions with a construction focused on strength, durability, and consistent rolling stability.
Heavy-Wall Roller Shell for Extended Wear Life
The roller shell is produced from high-grade alloy steel and heat-treated to achieve a hardened outer layer that resists abrasion and impact. The increased wall thickness ensures that the roller can withstand continuous contact with the track links without deforming.
The hardened layer maintains wear resistance over long service periods, while the core retains enough toughness to handle shock loads when the bulldozer passes over rocks or trench edges.
Precision Shaft Manufacturing for Smooth Performance
A stable bottom roller depends on the quality of its shaft. For the D275, each shaft is CNC-machined to tight concentricity standards, then induction-hardened along the running surfaces to prevent scuffing and metal fatigue.
This manufacturing approach allows the roller to maintain a consistent rotation even when loaded heavily during ripping or pushing dense materials. It also minimizes internal friction, which reduces heat buildup and slows the wear rate inside the bearing area.
Reliable Sealing System to Protect Internal Components
Bulldozers working in muddy, sandy, or wet environments often face accelerated wear due to contamination entering the rollers. This D275 bottom roller uses a compact, multi-layer sealing design that keeps fine particles out while retaining lubricant inside the shell.
The seal structure performs reliably during long-distance travel, blade pushing, and repeated machine turns—operations that typically cause pressure fluctuations inside the roller. With stable lubrication, the internal components maintain low friction and deliver longer service life.
Optimized Oil Capacity for Cooler Running Temperature
To ensure continuous lubrication during heavy-duty operations, the roller is filled with the right volume of high-grade oil that circulates inside the shell as the roller rotates. The roller body is designed to help distribute the oil evenly, preventing localized heating within the bearing surfaces.
This contributes to smoother rotation, improved resistance to internal scoring, and overall longer lifespan—especially crucial for D275 units that operate in long shifts without frequent maintenance breaks.
Heat Treatment
Machining Process
CNC turning and milling ensure dimensional accuracy
Assembly
Running Test
Simulated load test to verify functionality
Paint Spraying
Anti-rust coating for surface protection
Packing
Stable Track Support and Load Distribution
The D275’s heavy frame and powerful blade require steady support from the bottom rollers to maintain track alignment and reduce strain on the links and sprocket.
This roller provides:
- Stable load distribution across the undercarriage
- Reduced peak impact when operating on rough surfaces
- Smoother track movement during ripping or heavy pushing
- Lower vibration transferred to the frame and cabin
These benefits help operators experience a more stable machine response and extend the service life of the entire undercarriage system.
High-Accuracy Fitment for Komatsu D275
The roller’s dimensions and mounting structure follow the Komatsu D275 undercarriage standards, ensuring correct alignment with the track frame and bolt configurations.
Double Flange Track Roller: 17M-30-00330
Installation is straightforward and does not require modifications.
Precise fitment keeps the roller centered under the chain, preventing abnormal wear on both the track links and the roller surface.
| BRAND | MACHINERY MODEL NUMBER | |||||||
|---|---|---|---|---|---|---|---|---|
| KOMATSU | D20 | D21 | D31 | D37 | D39 | D41 | D50 | D53 |
| D55 | D57 | D60 | D61 | D65 | D68 | D75 | D80 | |
| D85 | D85A-12 | D87 | D90 | D95 | D135 | D155 | D155A-1 | |
| D155A-2 | D155A-3 | D155A-5 | D155AX-6 | D155AX-7 | D275 | D275A-2 | D275AX-5 | |
| D275AX-5EO | D355 | D355A-3 | D375A-2 | D375A-3 | D375A-5 | D375A-6 | D375A-8 | |
| D475A-2 | D475A-3 | D475A-5 | D475A-8 | D475A-8EO | D575A | D575A-2 | D575A-3 | |
| D65EX-12 | D65PX-12 | D61EX-15 | D61PX-15 | D61EX-24 | D61PX-24 | D37EX-21 | D37PX-21 | |
| D39EX-21 | D39PX-21 | D39EX-24 | D39PX-24 | D51EX-22 | D51PX-22 | D51EX-24 | D51PX-24 | |
| D85EX-15E0 | D85PX-15E0 | D85EX-18 | D85PX-18 | D155AX-8 | D155AXi-8 | D375A-8EO | D475A-8EO | |
Looking for a specific make or model not listed here? Reach out and we’ll be happy to assist.
Quality Control and Inspection
Before shipment, each roller undergoes structural and dimensional checks including shell hardness testing, shaft straightness inspection, seal tightness verification, and rotational resistance measurement.
These steps ensure a consistent product that performs reliably in mining, demolition, and large-scale construction environments.
Maintenance Recommendations
To maximize roller life on the D275, operators should keep the undercarriage clean, avoid running with incorrect track tension, and inspect rollers regularly for signs of oil leakage or abnormal noise. Consistent track-frame cleaning is especially important when working in clay or crushed rock, as packed material can accelerate wear.
SHIPPING & DELIVERY
At Kinton Parts, we ensure reliable, worldwide shipping of parts for excavators, bulldozers, and a full range of construction machines—safe, fast, and secure.
All products are securely packed using high-quality export cartons, reinforced wooden cases, or industry-standard palletized packaging to ensure maximum protection during transit and smooth handling during unloading.
Standard orders are typically shipped within 3–5 working days, while large or customized orders are usually dispatched within 7–20 days, depending on volume and production requirements.
We offer flexible global shipping options, including:
- International sea freight for cost-effective bulk transport
- Air freight for urgent orders
- Courier delivery (DHL, FedEx, UPS) for small-volume or sample shipments
Our logistics team manages every shipment carefully, providing real-time updates and tracking information until your order arrives safely at your destination.
Need assistance choosing the best shipping method for your location and timeline? Contact our team — we’ll help you plan a smooth delivery experience.
FAQ
Q: What are your main products?
A: We supply a full range of undercarriage and wear parts for excavators, bulldozers, and other heavy equipment. Our product line includes: Track rollers, carrier rollers, front idlers, sprockets, segments, track shoes, track chains, bolt and nuts, pins and bushings, bucket teeth and adaptors, filters, seal kits, swing bearing, and hydraulic cylinder—plus other essential replacement parts.
Q: Which countries do you export to?
A: Kinton Parts exports to over 60 countries worldwide, including:
USA, Canada, UK, Germany, Russia, UAE, Indonesia, Malaysia, Thailand, India, Pakistan, Bangladesh, Sri Lanka, South Africa, Colombia, Peru, and many others.
Q: Can I order a sample?
A: Yes, we accept trial orders. For parts in stock, samples can be shipped quickly. If you have technical drawings or existing samples, we also support customized production and mold development.
Q: How can I track my order after shipping?
A: Once your order is shipped, we will provide you with all necessary tracking information based on the shipping method. For express deliveries, you’ll receive a tracking number to follow the shipment online. For air or sea freight, we’ll send you the relevant documents such as the airway bill (AWB) or bill of lading (B/L), along with the packing list and commercial invoice to help with tracking and customs clearance.
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Trusted by professionals worldwide, Kinton Parts supplies premium-quality components for excavators, bulldozers, and more—with reliable quality you can count on.
