OEM Hydraulic Bucket Cylinder for Volvo Excavators
Premium-quality bucket cylinder designed for Volvo excavators. Built with a forged 42CrMo piston rod, honed tube, and advanced multi-seal system, this cylinder delivers consistent force for digging, loading, and dumping—even in abrasive or high-impact working environments.
| Cylinder Tube | Q345 / ST52 / 27SiMn / 20# Steel |
|---|---|
| Piston Rod | 45# / 40Cr / 42CrMo (Hard Chrome Plated) |
| Piston | Ductile Iron / Forged Steel (45# / 20Cr) |
| Cylinder Head | Q345 / 45# Steel / Cast Steel |
| Seals | Polyurethane (PU), NBR, FKM |
| Guide Bush | Bronze Alloy / Composite Materials |
| Ports & Fittings | Zinc-Plated Carbon Steel / Stainless Steel |
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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 bucket cylinder is the hydraulic muscle that controls bucket curling and dumping on your Volvo excavator. It operates under constant motion and direct load, especially during intensive digging and loading cycles. In models like the EC210, EC240, and EC360LC, the bucket cylinder plays a vital role in transmitting hydraulic force to penetrate the earth, scoop material, and smoothly discharge soil, rock, or debris during excavation tasks.
This cylinder also absorbs shock loads when breaking through compacted ground and works in coordination with the boom and arm cylinders to maintain hydraulic force balance. Precision and durability are crucial—any misalignment, leakage, or wear within the bucket cylinder can significantly reduce productivity and accelerate wear on adjacent components.
Structural Design & Material Highlights
Our bucket cylinders are built using high-strength alloy materials and CNC processes to ensure OEM-grade performance and long service life:
- Rod Material: 42CrMo alloy steel, induction hardened and chrome plated (≥25μm)
- Tube Material: ST52 or Q345B seamless steel, internally honed to Ra ≤ 0.2μm
- Mounting Ends: Fully CNC-machined and welded with high-tensile integrity
- Weld Inspection: Ultrasonic-tested for air-tight seal
- Bore Precision: Tolerance within ±0.05mm to ensure proper seal compression and rod guidance
These features allow the cylinder to operate reliably under shock, pressure reversal, and heavy-duty usage.
Internal Structure Overview
A detailed cross-section diagram is provided to illustrate:
- Seal arrangement: rod seal, piston seal, buffer ring, wiper
- Rod and piston interaction
- Hydraulic oil flow channels
- Wear ring positions for guidance under lateral force
This diagram helps visualize how the rod, piston, barrel, and seals interact under pressure, showing key wear zones and sealing points for effective maintenance planning.
Manufacturing Process Overview
Showcasing these three key manufacturing stages can help build trust and transparency：
Rod Polishing & Surface Prep
The piston rod is ground and polished to achieve a mirror-smooth surface, ready for hard chrome plating. This step reduces wear on seals and ensures long-lasting hydraulic performance.
Assembly & Sealing
In a cleanroom assembly area, the barrel, piston, rod, and end caps are fitted and torqued to spec. Seal kits are carefully installed to prevent fluid loss and contamination.
Pressure Testing & Export Packaging
Each cylinder is tested to withstand 1.5× working pressure and checked for leaks, stroke alignment, and valve performance. Final products are sealed and packed in export-grade wooden crates.
OEM Undercarriage Parts for Volvo Excavator
| BRAND | MACHINERY MODEL NUMBER | |||||||
|---|---|---|---|---|---|---|---|---|
| VOLVO | EC55 | EC140 | EC160 | EC180 | EC210 | EC210B | EC210CL | EC240 |
| EC240B | EC240CL | EC290 | EC290B | EC290CL | EC300 | EC300B | EC300DL | |
| EC330 | EC360 | EC360B | EC380DL | EC460 | EC460B | EC480DL | EC700B | |
| EC700CL | EC950E | EC750E | EC480EL | EC380EL | EC300EL | EC250EL | EC220EL | |
| EC200D | EC210D | EC140D | EC160D | EC180D | EC250D | EC300D | EC380D | |
| EC480D | EC750D | EC950D | EC700D | EC290LC | EC240LC | EC210LC | EC360LC | |
| EC460LC | EC700LC | EC950LC | EC480LC | EC300LC | EC250LC | EC220LC | EC140LC | |
| EC210BLC | EC240BLC | EC290BLC | EC360BLC | EC460BLC | EC700BLC | EC750EL | EC380FL | |
| EC300FL | EC250FL | EC220FL | EC480FL | EC950FL | EC160EL | EC180EL | EC140EL | |
| EC140BLC | EC160BLC | EC180BLC | EC290EL | EC360EL | EC460EL | EC700EL | ||
Not sure about fitment? Just send us your machine model, OEM reference number, or technical drawing — we’ll verify compatibility within 12 hours.
Maintenance Tips for Arm Cylinders
- Inspect and clean the rod surface every 300–500 hours to avoid seal wear or corrosion
- Watch for oil seepage, jerky bucket movement, or unusual sound, all early signs of seal fatigue
- Replace pivot bushings and keep them lubricated to reduce wear on mount points
- Fully retract the cylinder during long-term storage to prevent rod rust
- Avoid slamming or max extension under full load—reduces fatigue on internal components
FAQ – Volvo Cylinder
Q: Can I replace only the seal kit?
A: Yes. We supply full seal kits and support repair if your cylinder rod and barrel are intact.
Q: Can I use this bucket cylinder on EC and ECR series Volvo machines?
A: In many cases, yes. Please send us your serial number or part drawing—we’ll confirm in 12 hours.
Q: Can I order with a different rod end or stroke length?
A: Absolutely. We support custom rod ends, ports, and dimensions on request.
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.
