31QD-63020 Bucket Cylinder Hose transfers pressurized hydraulic oil for B2B excavator parts repair, replacement inventory, and wholesale sourcing.
The 31QD-63020 Bucket Cylinder Hose YNF19050 is a high-pressure hydraulic hose assembly used within the excavator bucket working circuit. Pressurized hydraulic oil is transferred through the hose so the bucket cylinder can be extended or retracted according to operator control input.
Because the hose is installed on a moving attachment circuit, repeated bending, hydraulic pressure, vibration, abrasion, and exposure to the jobsite environment must be tolerated during normal operation. Surface wear, cracking, leakage around crimped fittings, deformation, or damaged connectors can indicate that replacement is required.
For B2B buyers, the 31QD-63020 bucket cylinder hydraulic hose should be verified by part number, overall hose length, hose diameter, fitting type at both ends, fitting angles, thread or port configuration, and existing-part photos. Working-pressure specifications should be confirmed from the actual hose configuration rather than assumed. Accurate verification helps reduce incorrect inventory, hydraulic leakage claims, installation delays, and repeat freight.
| Parameter | Specification |
|---|---|
| YNF Part Number | YNF19050 |
| Part Number | 31QD-63020 |
| Product Name | Bucket Cylinder Hydraulic Hose |
| Alternative Name | Bucket Cylinder Hose / High Pressure Oil Hose / Bucket Hydraulic Hose |
| Product Type | High-Pressure Hydraulic Hose Assembly |
| Parts Category | Excavator Hydraulic System Parts |
| Main Function | Transfers Pressurized Hydraulic Oil to and from the Bucket Cylinder |
| Application | Excavator Bucket Working Circuit |
| Installation | Bucket Cylinder Hydraulic Line |
| Working Medium | Hydraulic Oil |
| End Configuration | Crimped Hydraulic Fittings |
| Working Pressure | To Be Confirmed |
| Machine Model | To Be Confirmed |
| Fitment Check | Part Number / Length / Diameter / End Fittings / Angles / Threads / Existing Hose Photo |
| Quality Type | Aftermarket Replacement |
| Condition | New |
| Brand | YNF |
| Origin | China |
| MOQ | 1 Piece |
| Shipping Method | Air, Sea, Express |
| Payment Terms | T/T, PayPal, Western Union |
| Application | Description |
|---|---|
| Bucket Cylinder Circuit | Transfers hydraulic pressure for bucket movement |
| Excavator Attachment System | Used within the working equipment hydraulic circuit |
| Bucket Curl Function | Supports oil flow during bucket cylinder extension and retraction |
| Hydraulic Hose Repair | Suitable when the original pressure hose is leaking or damaged |
| Attachment Overhaul | Can be renewed during bucket cylinder or linkage servicing |
| Preventive Maintenance | Useful when abrasion or aging is identified before failure |
| Fleet Maintenance | Practical for excavators working under repeated loading cycles |
| B2B Parts Stocking | Suitable for dealers, wholesalers, and hydraulic repair suppliers |
Q: Is this a low-pressure return hose?
A: No. It is identified as a high-pressure hose for the bucket cylinder working circuit.
Q: Is a specific excavator model confirmed?
A: No specific machine model has been supplied, so fitment should be verified before ordering.
Q: What should wholesalers check before purchasing?
A: Part number, hose length, diameter, fitting types, fitting angles, thread specifications, and existing-part photos should be compared.
YNF Machinery supplies 31QD-63020 bucket cylinder hoses and related excavator hydraulic components for repair workshops, fleet operators, machinery dealers, wholesalers, and international importers.
The YNF19050 high-pressure hose works in a moving attachment circuit, so correct hose length and fitting orientation are particularly important. A hose that is too short, incorrectly angled, or mismatched at the fittings can create installation stress as the bucket linkage moves through its working range.
Professional B2B buyers can provide the 31QD-63020 part number, machine model, required quantity, overall hose length, hose diameter, fitting photos, fitting angles, thread details, and clear images of the removed hose for fitment confirmation.
Bucket cylinders, hydraulic hose assemblies, steel pipes, adapters, seal kits, pins, bushings, control valves, and other excavator attachment parts can also be consolidated into the same inquiry to simplify purchasing and reduce fragmented international shipping costs.
