How does the jack prevent overload?

The jack is equipped with a pres-relief valve that prevents overload in the cylinder, protecting the jack from damage.

Is the jack suitable for underwater use?

Yes, the self-locking type hydraulic jack can be used underwater, offering single-acting operation with automatic nut locking.

What is the minimum order quantity?

The Minimum Order Quantity (MOQ) is 1 Set.

55-1000ton Single Acting Big Tonnage Lock Nut Hydraulic Cylinder with CE Certification

Name: 55-1000ton Single Acting Big Tonnage Lock Nut Hydraulic Cylinder with CE Certification
Brand: Zhengzhou Lead Equipment Co., Ltd.
SKU: 786745332

Henan, ChinaZhengzhou Lead Equipment Co., Ltd.

US$100.00-1,500.00

1 Set

Product profile

Customization

Available

Type

Hydraulic Jack

Structure

Hydraulic Jack

Model NO.

CLL

Capacity (Load)

55-1000t

Power Source

Hydraulic

Max Height

301-350mm

Certification

CE, ISO 9001:2000, SGS

Condition

New

Jack Model

Cll Series Lock Nut Hydraulic Cylinder

Tonnage

55-1000t

Stroke

Customized

Body Height

Customized

Transport Package

Standard Export Package

Specification

standard specification and customized

Trademark

Leadcrete

Origin

China

HS Code

84254210

Production Capacity

10000 Sets Per Month

Key features

Self-Locking Safety: Supports heavy loads without oil pressure; nut locks automatically for enhanced safety.

High Tonnage Capacity: Available in capacities ranging from 55 to 1000 tons for heavy-duty applications.

Corrosion Resistant: Specially-made composite material coating provides strong anti-corrosion properties.

CE Certified Quality: Meets CE, ISO 9001:2000, and SGS certification standards for reliability.

Customizable Stroke: Stroke and body height can be customized to meet specific project requirements.

Versatile Applications: Ideal for power, building, mining, railway, bridge, and shipbuilding industries.

Overload Protection: Equipped with pres-relief valve to prevent overload and protect the cylinder.

Balanced Pressure Design: Piston rod features a ringlike sphere spacer allowing 8% bias factor for balance.

Company profile

Full CustomizationR&D CapabilitiesCooperated with Fortune 500High Repeat Buyers Choice

Zhengzhou Lead Equipment Co., Ltd.

Henan, China

CertifiedBusiness Type: Manufacturer/Factory CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: Own rich exporting experience CertifiedNearest Port: Shanghai Port, Qingdao PortAverage Response Time: ≤1.82h

AI-Powered supplier vetting

SummaryThe supplier demonstrates broad customization, ODM and OEM capabilities, with new products reported in the past year and three R&D engineers. It holds ISO9001:2015 and CE certifications, and quality controls include documented inspection, traceability, complaint handling, and corrective-action procedures. Manufacturing facilities cover bending, CNC lathing, drilling, laser cutting, rolling, painting, shot blasting, and related processes, but there is one production line and no continuous batch quantity reconciliation. The supplier has exported for 15 years, with exports accounting for 51%–70% of sales, and has four experienced export staff. Evidence of customer credibility includes cooperation with Fortune 500 companies and an 80%–100% repeat-buyer preference. Financial information is limited to year references and does not substantiate financial strength. Overseas service infrastructure is absent, including warehouses, showrooms, agents or branches, and offline trade-show participation.

Supplier typeThe supplier provides ODM services, OEM services for well-known brands, and has self-operated import/export rights alongside agency export channels. Its export history is stated as 15 years, with exports representing 51%–70% of total sales, indicating an experienced export-oriented manufacturer.

CertificationsThe supplier reports ISO9001:2015 management-system certification and CE product certification. These explicitly demonstrate recognized quality-management and product-compliance certifications.

After-Sales capabilityThe supplier has a clear customer-complaint procedure with records, supporting a documented after-sales response process. However, it reports no overseas warehouse, showroom, overseas agent or branch, so localized overseas service coverage is not evidenced.

R&D capabilityThe supplier reports new products within the past year, provides ODM services, and has three R&D engineers. It lacks an available SDK, but the available evidence still explicitly supports product-development and design capability.

Production capacityThe supplier lists facilities for bending, CNC lathing, drilling, laser cutting, linear cutting, painting, rolling, shot blasting and vertical lathing. It has one production line and does not continuously reconcile quantities for each batch or mass production, indicating broad process coverage but a documented production-control limitation.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, minor customization and flexible customization. These capabilities are supported by both its R&D/design information and facility profile.

Client casesThe supplier reports OEM cooperation with well-known brands and collaboration with Fortune 500 companies. It also reports an 80%–100% repeat-buyer preference, providing explicit evidence of notable customer experience and retention, although no customer names or project details are supplied.

Product Q&A

Q:What is the main safety feature of this hydraulic jack?

It is a self-locking type hydraulic jack that can support heavy loads without oil pressure. The nut locks automatically, making loading safer, especially in large projects.

Q:What is the load capacity range of this cylinder?

The capacity ranges from 55 tons to 1000 tons, available in various models such as CLL-55 to CLL-1000 series.

Q:Can the stroke and body height be customized?

Yes, the stroke and body height are customizable. You can also customize it into a double-acting hydraulic jack if required, though the closed height will increase.

Q:What certifications does this product have?

The product has CE, ISO 9001:2000, and SGS certifications, ensuring quality and safety standards.

Q:What are the typical applications for this hydraulic jack?

It is mainly used for rising, topping, and tearing down in electric power, building, machine manufacturing, mining, railway, bridge, shipbuilding, and other industrial fields.