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Large Tonnage Nut Self-Locking Hydraulic Jack

Category: Jack

The Large Tonnage Nut Self-locking Hydraulic Jack is a high-capacity lifting device designed for heavy-duty industrial applications where safety, stability, and sustained load holding are critical.

0086-18816512330

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Large tonnage nut self-locking hydraulic jack

Product Introduction: Large Tonnage Nut Self-Locking Hydraulic Jack

The Large Tonnage Nut Self-Locking Hydraulic Jack is a high-performance lifting solution designed for heavy-duty industrial applications. Engineered to handle extreme loads with maximum safety and stability, this jack is ideal for operations in construction, mining, shipbuilding, bridge lifting, and maintenance of large mechanical equipment.

One of its key features is the self-locking mechanism. Once the load is lifted, the mechanical nut locks automatically, providing secure and stable load holding without relying on continuous hydraulic pressure. This function ensures a higher level of safety, especially during long-term or unattended lifting operations.

Built with high-strength alloy steel, this industrial-grade lifting device offers excellent durability and resistance to wear and corrosion. Its robust structure allows it to operate efficiently under harsh environmental conditions, making it suitable for outdoor use in various weather conditions.

Another advantage is its simple operation and low maintenance requirements. The design includes a high-precision thread mechanism that facilitates smooth nut rotation and secure locking, enhancing operational reliability and reducing downtime.

In addition to its safety and strength, this jack supports custom tonnage capacities and stroke lengths to meet specific client requirements. Whether for lifting, positioning, or maintenance tasks, it delivers superior performance and adaptability.

The unit is also compatible with manual, electric, or air-powered hydraulic pumps, offering flexibility in power sources depending on job site conditions. This makes it a versatile tool in both remote and industrial environments.

When it comes to reliability and safety in high-tonnage lifting, this self-locking hydraulic jack stands out as a trusted choice. Its precision-engineered locking system and rugged construction ensure dependable support for critical lifting operations.

Companies looking for an efficient and secure solution often turn to this equipment to meet their heavy-load demands. Its combination of power, safety, and convenience provides a competitive edge in industrial maintenance and infrastructure projects.

In summary, if your application demands a powerful, stable, and low-risk lifting solution, this heavy-duty jack is your ideal partner. Backed by rigorous engineering and proven performance, it is built to lift and hold with confidence.

Technical Features:

Withstands up to 1000 tons of mechanical load
Double-action design for forward and retract operations
Integral stop ring provides piston overstroke protection
Exterior coating and chrome piston offer excellent corrosion resistance

Technical parameters

Specifications and models	Bearing Capacity (T)	Working stroke (mm)	Effective area (cm²)	Body height A	Hydraulic oil volume (cm³)	Extension height B(mm)	Jack diameter (mm)	Self-locking nut diameter D1	Aperture E(mm)	Plunger size F(mm)	Brake ring height H	Saddle diameter J	Tolerances for saddle and brake ring K	Self-locking nut thickness S	Weight (kg)
KET-SDL-1002	100	50	143.14	188	716	238	180	225	135	120	35	115	10	90	46
KET-SDL-1004	100	100	143.14	238	1431	338	180	225	135	120	35	115	10	140	60
KET-SDL-1502	150	50	213.82	190	1069	240	220	260	165	140	35	135	10	90	63
KET-SDL-1504	150	100	213.82	240	2138	340	220	260	165	140	35	135	10	140	81
KET-SDL-2002	200	50	283.53	197	1418	247	250	295	190	160	35	155	12	90	83
KET-SDL-2004	200	100	283.53	247	2835	347	250	295	190	160	35	155	12	140	107
KET-SDL-2502	250	50	363.05	200	1815	250	280	330	215	180	35	175	12	95	106
KET-SDL-2504	250	100	363.05	250	3631	350	280	330	215	180	35	175	12	145	136
KET-SDL-3002	300	50	433.77	212	2169	262	305	360	235	200	40	195	12	100	135
KET-SDL-3004	300	100	433.77	262	4337	362	305	360	235	200	40	195	12	150	170
KET-SDL-4002	400	50	572.56	238	2863	283	350	420	270	225	45	215	15	100	199
KET-SDL-4004	400	100	572.56	283	5726	383	350	420	270	225	45	215	15	150	243
KET-SDL-5002	500	50	730.62	238	3653	288	390	460	305	250	45	240	15	112	245
KET-SDL-5004	500	100	730.62	288	7306	388	390	460	305	250	45	240	15	160	300
KET-SDL-6002	600	50	866	245	4328	295	420	500	332	270	45	260	15	115	296
KET-SDL-6004	600	100	866	295	8657	395	420	500	332	270	55	260	15	165	362
KET-SDL-8002	800	50	1146.16	280	5821	330	490	580	385	320	55	310	20	125	455
KET-SDL-8004	800	100	1146.16	330	11462	430	490	580	385	320	55	310	20	175	545
KET-SDL-10002	1000	50	1452.2	305	7261	355	540	650	430	350	55	340	30	130	600
KET-SDL-10004	1000	100	1452.2	355	14522	455	540	650	430	350	55	340	30	180	712

Large Tonnage Nut Self-locking Hydraulic Jack

Product Overview

The Large Tonnage Nut Self-locking Hydraulic Jack is a high-capacity lifting device designed for heavy-duty industrial applications where safety, stability, and sustained load holding are critical. Equipped with a mechanical self-locking nut, this jack ensures safe operation during extended periods of load maintenance without continuous hydraulic pressure.

Ideal for bridge construction, heavy equipment installation, shipbuilding, power plant maintenance, and other demanding environments, this hydraulic jack delivers unmatched reliability, lifting force, and safety assurance.

Key Features

Large Tonnage Capacity
Available in capacities ranging from 50 tons to 1000 tons, suitable for ultra-heavy lifting requirements.
Self-locking Nut Mechanism
Mechanical safety nut automatically locks the load after lifting, ensuring long-term secure support even if hydraulic pressure is lost.
High Safety & Stability
Prevents sudden drop in case of hose rupture or hydraulic failure. Ideal for overhead or critical lifting tasks.
Extended Stroke Options
Standard stroke lengths from 50mm to 300mm, customizable upon request.
Durable Construction
Made of high-strength alloy steel with precision machining, anti-corrosion surface treatment, and wear-resistant sealing systems.
360° Lifting Eye Bolts or Handles
Easy transport and positioning even for high-tonnage models.

Note: Custom sizes, strokes, and pressure ratings are available on request.

Applications

Bridge and tunnel construction
Heavy structural lifting and alignment
Offshore platforms and marine engineering
Wind turbine and tower installation
Industrial equipment maintenance
Jacking and shoring systems

Why Choose Our Self-locking Jacks?

Complies with international safety standards (CE, ISO9001)
Full testing and inspection before delivery
Optional accessories: electric pump, hoses, pressure gauge, couplers
After-sales technical support & user manuals included
Global shipping and export packaging solutions

Key words:

Hydraulic Jack Equipment

Large tonnage hydraulic jack

Electric Lifting Jack

Hydraulic Jack For Lifting

Large Tonnage Nut Self-Locking Hydraulic Jack

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Shanghai Yanyao Machinery Technology Co., Ltd.

Mobile: 0086-18816512330

E-mail: ceo@sh-yyjx.com

Office address: Room 1134, No. 6, Lane 65, Huandong 1st Road, Fengjing Town, Jinshan District, Shanghai, China.

Address of the factory: Shanghai Yanyao Machinery Technology Co., Ltd. (Jiangsu Branch), Anfeng Town Private Pioneer Park, Dongtai City, Yancheng City, Jiangsu Province, China.

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