Komatsu Bulldozer D155A Undercarriage Front Idler Wheel 17A-30-00043

Durable Komatsu D155A-3 Bulldozer Idler Wheel (17A-30-00043) engineered for superior track guidance and long-lasting undercarriage performance. Made with premium forged steel and advanced heat treatment, it ensures smooth operation, reduces wear, and extends the service life of your bulldozer even under extreme working conditions.

Material50Mn/40MnB
Surface HardnessHRC53-58,deepth: 8-12mm
ColorsBlack 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.

BULLDOZER UNDERCARRIAGE PARTS FOR INQUIRY NOW
Description

The Komatsu D155A Bulldozer Idler Wheel is a vital undercarriage component designed to guide and support the track chain while maintaining proper tension. In heavy-duty bulldozing applications such as mining, quarrying, and large-scale earthmoving, the idler faces constant exposure to abrasion, shock loads, and ground impact.

A high-quality idler ensures track alignment, smoother movement, reduced vibration, and prevents premature wear of the entire undercarriage system. Our D155A-3 idler wheels are precision-manufactured to OEM specifications, guaranteeing a perfect fit and reliable performance in the harshest environments.

Key Features & Benefits

  • Heavy-Duty Strength – Forged alloy steel construction for maximum toughness.
  • Advanced Heat Treatment – Enhanced hardness and wear resistance.
  • Smooth Track Guidance – Prevents misalignment and reduces vibration.
  • Extended Service Life – Lowers maintenance frequency and operating costs.
  • OEM Precision Fit – 100% compatible with Komatsu D155A bulldozer undercarriage.

Manufacturing Process of D155A Idler

The idler for the D155A bulldozer is manufactured through a series of controlled production steps, ensuring reliable performance under heavy load and harsh working conditions. From internal bearing preparation to final coating and storage, each stage contributes to the durability and stability of the undercarriage system.

The idler body is made from 50Mn steel, offering high strength, good wear resistance, and the ability to withstand continuous impact and stress during operation.

Dozer Front Idler Shaft
1. Internal Bearing Manufacturing

The central bearing components are carefully machined and assembled to ensure smooth rotation and proper load support. Accurate bearing structure is essential for maintaining stable track movement and reducing internal wear over time.

Bulldozer Idler Surface Finishing
2. Surface Treatment Process

Before finishing, the idler surface undergoes cleaning and treatment to remove scale and impurities. This process improves surface quality and prepares the component for better coating adhesion and corrosion resistance.

Bulldozer track idler wheel painting
3. Paint Spraying

A protective paint layer is applied to the idler surface to prevent rust and environmental damage. The coating also ensures a uniform appearance and protects the product during transportation and storage.

bulldozer undercarriage parts Idler
4. Warehouse & Pre-Shipment Preparation

Finished idlers are stored in an organized warehouse environment and inspected before shipment. Proper handling and storage help ensure that each unit is delivered in ready-to-install condition for D155A machines.

Application in Extreme Working Conditions

The Komatsu D155A idler performs exceptionally well under tough conditions — whether you’re bulldozing in clay, gravel, sand, or hard clay formations. The hardening process and protective coating help it resist abrasion and shock, extending service intervals and reducing maintenance and downtime. Whatever your application — forestry, mining, road-building, or heavy earthmoving — this idler guarantees stability and reliability.

Why Choose Our Komatsu D155A Idler Wheels?

  • OEM-standard design with guaranteed compatibility
  • Proven durability under the harshest working conditions
  • Extended undercarriage life with reduced downtime
  • Strong wear resistance to lower long-term costs
  • Global supply with reliable after-sales support

OEM Undercarriage Parts for Komatsu Bulldozer

D155A bulldozer carrier roller reference model: 17A-30-00043

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.

Shipping & Delivery

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.

excavator parts loading truck 4
excavator parts loading truck 2
excavator parts loading truck 1

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.

BULLDOZER UNDERCARRIAGE PARTS FOR INQUIRY NOW