LPL4002, 400 Ton Capacity,45mm Stroke, Single Acting, Load Retraction, Low Height Hydraulic Lock Nut Cylinders
The RIVERLAKE LPL Series delivers reliable load holding and lifting performance in a compact, low-profile design. Engineered as single acting, load retraction lock nut cylinders, this series is specifically designed for applications where space is limited and mechanical load security is essential. Combining robust construction with advanced surface treatment technology, the LPL Series provides dependable operation in confined installation environments.
Description
Series: LPL | Product Line: Industrial Tools
Mechanical Load Security for Safe Operation:
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Locking Nut for Mechanical Load Support: The integrated locking nut provides mechanical load holding capability, ensuring a safe working environment by maintaining load position even in the event of hydraulic pressure loss.
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Compact Low-Profile Design: Features an extremely low closed height, making these cylinders ideal for installation in confined spaces where traditional cylinders cannot fit.
Superior Alignment & Load Management:
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Integrated Tilting Saddle: The built-in one-piece tilting saddle accommodates a maximum misalignment angle of 5°, compensating for angular variations between the cylinder and workpiece to ensure proper load distribution.
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Eccentric Load Capacity: Capable of withstanding eccentric loads of 5-10%, providing reliable performance under real-world loading conditions where perfect alignment cannot always be achieved.
Efficient Operation & Integrated Protection:
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Single Acting, Load Retraction: Designed as single acting cylinders with gravity return, offering straightforward operation with reliable load retraction when hydraulic pressure is released.
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Over-Travel Protection: The overflow port also functions as a stroke limiter, preventing plunger over-travel and ensuring safe operation within design parameters.
Advanced Durability for Demanding Environments:
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Superior Surface Treatment: Advanced gas nitriding with post-oxidation surface treatment technology delivers exceptional corrosion resistance and enhanced anti-eccentric load performance—extending service life in harsh working conditions.
Standard Convenience Features:
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Ready-to-Use Configuration: All models come standard with CEJN quick couplings and dust caps, ensuring clean, reliable connections and protecting hydraulic ports from contamination during transport and storage.
Specifications
| Maximum Operating Pressure (bar) | 700 |
| Capacity Class (tonnage) | 400 |
| Stroke (mm) | 45 |
| Collapsed Height/mm | 178 |
| Extended Height/mm | 223 |
| Return Type | Single-Acting, Load Return |
| Cylinder Effective(cm2) | 572.6 |
| Oil Capacity(cm3) | 2576.5 |
| Surface Treatment | NAC surface treatment, gas nitriding and post-oxidation surface treatment |
| Coupler | CEJN 3/8NPT-18 |
| Weight (kg) | 129 |
Dimensions
| Collapsed Height/mm(A) | 178 |
| Extended Height/mm(B) | 223 |
| Cylinder Outside Dia/mm(D) | 350 |
| Cylinder Bore Dia/mm(E) | 270 |
| Plunger Dia/mm(F) | Tr270x6 |
| Base To Advance Port/mm(H) | 40 |
| Saddle Dia/mm(J) | 250 |
| Saddle Protri. From Plgr./mm(K) | 12 |
| Max Saddle Tilt Angle(R) | 4° |
| Lock Nut Height/mm(S) | 55 |

Series Comparison
| Model Number | Rated Cylinder Capacity | Max. Cylinder Capacity at 700Bar/Ton(kN) | Stroke/mm | Cylinder Effective Area/cm2 | Oil Capacity/cm3 | Collapsed Height/mm(A) | Extended Height/mm(B) | Cylinder Outside Dia/mm(D) | Cylinder Bore Dia/mm(E) | Plunger Dia/mm(F) | Base To Advance Port/mm(H) | Saddle Dia/mm(J) | Saddle Protri. From Plgr./mm(K) | Max Saddle Tilt Angle(R) | Lock Nut Height/mm(S) | Weight/Kg |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| LPL602 | 60 | 62(606) | 50 | 86.6 | 433 | 126 | 176 | 140 | 105 | Tr105x4 | 19 | 96 | 7 | 5° | 28 | 15 |
| LPL1002 | 100 | 102(1002) | 50 | 143.1 | 715.7 | 137 | 187 | 173 | 135 | Tr135x6 | 21 | 126 | 8 | 5° | 31 | 25 |
| LPL1602 | 150 | 162(1589) | 45 | 227 | 1021.4 | 148 | 193 | 220 | 170 | Tr170x6 | 27 | 160 | 9 | 5° | 40 | 43 |
| LPL2002 | 200 | 202(1985) | 45 | 283.5 | 1275.9 | 155 | 200 | 245 | 190 | Tr190x6 | 30 | 180 | 10 | 5° | 43 | 55 |
| LPL2502 | 250 | 259(2541) | 45 | 363.1 | 1633.7 | 159 | 204 | 275 | 215 | Tr215x6 | 32 | 200 | 12 | 5° | 43 | 70 |
| LPL4002 | 400 | 409(4008) | 45 | 572.6 | 2576.5 | 178 | 223 | 350 | 270 | Tr270x6 | 40 | 250 | 12 | 4° | 55 | 129 |
| LPL5002 | 500 | 522(5114) | 45 | 730.6 | 3287.8 | 192 | 237 | 400 | 305 | Tr305x6 | 49 | 290 | 10 | 3° | 61.5 | 183 |
Downloads
| – | File Name | File Type |
|---|---|---|
| LPL Low-Height High Tonnage Lock Nut Cylinders | English | |
| LPL单作用薄型锁紧螺母油缸 | 中文 | |