Excavator Spare Parts Track Roller Bolt for Undercarriage
Durable and precision-forged track roller bolts for excavators. Manufactured from 40Cr alloy steel with Grade 12.9 strength, these bolts ensure secure roller mounting under heavy-duty working conditions.
| Material | 40CR |
|---|---|
| Grade | 10.9/12.9 |
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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 track roller bolt is a critical component used to fasten the bottom rollers (track rollers) securely onto the undercarriage frame of tracked excavators and bulldozers. These bolts are engineered to endure extreme impact, shock, and continuous vibration as the machine moves over rough terrain. A reliable roller bolt ensures that the track rollers remain stable and aligned, preventing premature wear and failure.
Our track roller bolts are manufactured from premium-grade 40Cr alloy steel, heat treated to Grade 12.9 strength, and precision-machined for tight tolerance and thread consistency. They offer maximum resistance to loosening, breakage, and corrosion—even under high dynamic loads.
Material & Hardness
- Material: 40Cr alloy steel (also available in 42CrMo upon request)
- Hardness: HRC 38–44 after quenching and tempering
- Strength Grade: 12.9 (high tensile strength, shear-resistant)
- Surface: Black oxide finish or anti-rust coating as standard
- Thread Type: Available in both coarse thread and fine thread depending on OEM specifications
Manufacturing Process
The production process ensures both structural reliability and dimensional accuracy:
Raw Steel Rods
High-quality 40Cr steel rods are selected and precision cut to length before hot forging.
Hot Forging & Head Shaping
Using red-hot steel billets, the bolt heads are formed through controlled press forging, ensuring structural consistency and mechanical strength.
Pre-Thread Machining
After head shaping, each bolt undergoes pre-machining to prepare for threading, with critical dimension control.
Inspection & Final Packaging
All bolts, nuts, and washers are dimensionally inspected, surface-treated, and packed as kits.
Standard Specifications
| Bolt Type | Thread Size | Length Range | Thread Pitch | Strength Grade | Finish |
|---|---|---|---|---|---|
| Roller Bolt (Coarse) | M16 – M24 | 60mm – 120mm | 2.0 – 3.0 | 12.9 | Black Oxide / Zinc |
| Roller Bolt (Fine) | M18x1.5 – M22x1.5 | 60mm – 110mm | 1.5 | 12.9 | Anti-Corrosion |
Custom lengths and thread pitches available for OEM orders
Compatible Excavator Brands
Our track roller bolts are compatible with most major excavator models, including but not limited to:
- Caterpillar, Komatsu, Hitachi, Doosan, Hyundai, Volvo, Kobelco, Sany, XCMG, and other OEMs
Please contact us with your part number or bolt dimensions for exact matching.
Quality Assurance
Each batch of bolts undergoes:
- Raw material verification
- Thread gauge inspection (GO/NO-GO test)
- Torque testing
- Surface coating check
- Full hardness and tensile strength sampling
- All tests are documented and traceable via lot number.
Why Choose KINTON Bolts
- High-strength 40Cr construction
- Precision-machined for excellent thread engagement
- OEM-compatible sizing
- Fast delivery and stable inventory
- Ideal for dealer stock and maintenance shops
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.
