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Hydraulic double-sided lock for XCMG truck crane 803000738
Hydraulic double-sided lock art.803000738 is designed for XCMG truck cranes. Provides reliable fixation of hydraulic cylinders, prevents spontaneous displacement of the rod, and is designed for operation under the operating pressure of special equipment.
Description
marker
Hydraulic double-sided lock for XCMG truck crane 803000738 - original quality at factory price
When it comes to safe lifting operations, every part of the hydraulic system plays a critical role.Hydraulic double-sided lock 803000738- this is the component that keeps the load in a stable position even with a sudden drop in pressure in the circuit. We, the companyMettlead, we supply this hydraulic lock directly from the factory in China, which means you get proven quality without intermediary markups and with a guarantee of fast delivery anywhere in the world.
Functions and advantages of hydraulic double-sided lock XCMG 803000738
Reliable load fixation
The double-sided hydraulic lock for the XCMG truck crane prevents spontaneous lowering of the boom and extension sections. Thanks to bi-directional oil flow blocking, the cylinder remains blocked in both directions, eliminating on-site accidents.
High tightness and durability
The lock body is made of high-strength alloy steel with precision machining of internal channels. The sealing elements ensure minimal leakage even after tens of thousands of operating cycles. Consequently, you reduce maintenance costs and equipment downtime.
Directly compatible with XCMG crane
This hydraulic lock fully complies with the specifications of the XCMG OEM catalog number803000738. This means that installation is carried out without any modification: it is enough to dismantle the worn-out unit and install a new component on the standard seat.
Economic benefit for the buyer
- Factory price— direct deliveries from Mettlead exclude distributor markups.
- Strict quality control— each lock undergoes bench pressure tests before shipment.
- Flexible payment terms— secure and regular payment methods, convenient for international buyers.
- Fast shipment— Availability in stock allows you to ship your order within 1–3 business days.
Technical characteristics of hydraulic lock 803000738
| Parameter | Meaning |
|---|---|
| OEM part number | 803000738 |
| Type | Dual Pilot Operated Check Valve |
| Applicable Brand | XCMG (徐工) |
| Working pressure | up to 35 MPa |
| Maximum flow | 60 l/min |
| Operating temperature | from −20 °C to +80 °C |
| Housing material | High strength alloy steel |
| Seals | NBR / Viton (depending on batch) |
| Installation connection | Threaded, meets XCMG OEM specification |
| Weight | ≈ 3.2 kg |
| Packaging | Neutral / customized upon request |
Scope of application: which machines are equipped with this hydraulic lock
Hydraulic double-sided lock 803000738 is installed onXCMG truck cranesvarious series - both for boom sections and outriggers. In particular, it is used in the following nodes:
- Primary Boom Raise and Lower Circuit
- Telescoping circuit for retractable sections
- Hydraulic system of supports (outriggers) for fixing the crane in working position
Compatible Models:series of truck cranes XCMG (徐工吊车), including QY25K, QY50K, QY70K and other modifications, where the spare parts catalog contains article number 803000738. Before placing an order, we recommend checking the part number with the service documentation of your machine - this guarantees full compatibility.
OEM/ODM capabilities and customized packaging
Mettlead doesn't just sell parts - we adapt to your business. Here's what we can offer in addition to standard delivery:
- White-label packaging— applying your logo, article number and barcode to the box and label.
- Individual marking— engraving or laser marking of the lock body according to your technical specifications.
- Batch deliveries— generation of sets of spare parts for scheduled maintenance of XCMG truck cranes so that your warehouse operates more efficiently.
- Quality control to your standards— additional tests and photo reports before shipment.
In addition, we invite partners to visit our production in China to see for themselves the level of quality and discuss the terms of long-term cooperation.
Client case: how the XCMG 803000738 hydraulic lock helped reduce downtime
At the beginning of 2024, we were approached by a company from Central Asia that manages a fleet of 12 XCMG truck cranes. Their problem was typical: the original hydraulic double-sided locks 803000738 failed on several machines at the same time, and delivery through an authorized dealer took more than 8 weeks.
We shipped a batch of 15 units of hydraulic locks 803000738 within two working days. Due to strict adherence to OEM specifications, installation took no more than 40 minutes per valve. As a result, the client got the equipment back into service 6 weeks earlier than planned and saved more than $12,000 on replacement equipment rental costs. Today this company orders from Mettleadhydraulic locks for XCMG truck craneson a regular basis, forming safety stock in the warehouse.
Frequently asked questions about XCMG hydraulic lock 803000738
How does a double-sided hydraulic lock differ from a single-sided one?
A one-way lock only blocks oil flow in one direction, whereasdouble-sided hydraulic lock 803000738locks both channels - inlet and outlet. This means that the cylinder is fixed in any position, regardless of the direction of the external load. For a truck crane, where the boom can both rise and fall under the weight of the load, bidirectional locking is a mandatory safety requirement.
How to determine that a hydraulic lock needs to be replaced?
Pay attention to the following signs: spontaneous “sagging” of the boom or outriggers when the engine is turned off, increased internal leaks (visible decrease in pressure in the circuit), as well as extraneous noise when switching the direction of movement of the cylinder. If you experience at least one of these symptoms, it is recommended to replace the hydraulic double-sided lock 803000738 as soon as possible.
Is this lock suitable for truck cranes from other manufacturers?
Number 803000738 is the XCMG catalog number. However, since the hydraulic locks are structurally similar, theoretically compatibility with cranes of other brands is possible if the operating parameters and connecting dimensions match. However, we strongly recommend checking installation drawings before ordering. Contact our technical team and we will help you find the right part.
What is the service life of hydraulic lock 803000738?
If you follow the recommendations for the cleanliness of the working fluid and regularly replace hydraulic system filters, the lock's service life ranges from 8,000 to 15,000 operating hours. Hydraulic oil quality is a key factor in longevity: contaminated fluid accelerates wear on seals and precision valve surfaces.
Is the lock supplied complete with mounting elements?
Yes, the hydraulic lock assembly with O-rings is included as standard. Mounting bolts and adapters are selected for a specific crane model - specify the model when submitting your request, and we will include the necessary elements in the delivery.
Get a price quote for hydraulic lock XCMG 803000738 today
Are you looking for a reliable supplier?hydraulic double-sided locks for XCMG truck cranesat a competitive factory price? Mettlead is ready to provide a detailed cost estimate, including delivery to your warehouse.
What is needed for the request:
- Specify the article:803000738
- Tell us the required quantity
- Please indicate the country of delivery
Our manager will respond within 24 hours with a detailed commercial offer, production timeframes and logistics options. We work transparently - without hidden fees or unexpected delays.
Contact Mettlead now- and make sure that quality XCMG spare parts can be affordable and quickly delivered.
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