HSC-LP Series Low-Height Pancake Lock-Nut Cylinders
Engineering Overview & Structural Features
The HSC-LP Series Low-Height Pancake Lock-Nut Hydraulic Cylinders are precision-engineered for critical lifting and long-term mechanical load holding in extremely confined vertical clearances. Rated for 700 Bar (10,000 PSI) working pressure with capacities from 60 to 520 Metric Tons, its threaded plunger rod and heavy-duty mechanical lock ring allow loads to be sustained mechanically for indefinite periods without maintaining hydraulic pressure. Standard equipped with integral tilt saddles, hard-chromed cylinder bores, and safety overstroke overflow ports.
Structural Features & Engineering Advantages
Mechanical Locking Nut Architecture
When the heavy-duty threaded lock ring is screwed down to physically engage the cylinder barrel, the full tonnage load is held mechanically, enabling complete depressurization of the hydraulic system with 100% safety.
Integral Tilting Saddle Fitted Standard
Supplied with an integral ball-and-socket tilting saddle as standard on all models, automatically compensating for up to 5° of structural deflection and side loading to protect the piston from binding.
QPQ Treated Piston & Lock Ring
Both the threaded plunger rod and the heavy locking ring receive specialized QPQ (Quench-Polish-Quench) nitrocarburizing treatment, providing exceptional surface hardness, anti-galling lubrication, and corrosion defense.
Safety Oil Overflow Restrictor Port
An engineered overflow port acts as a positive stroke limiter by bypassing hydraulic fluid back into the reservoir once max stroke is achieved, positively eliminating piston blow-out risks.
U-Cup Sealing & Hard Chrome Bore
Featuring a micro-polished hard chrome cylinder bore for maximum corrosion resistance, paired with high-performance industrial U-cup dynamic seals to eliminate pressure loss during intense bridge jacking.
Forged Alloy Body & Baked Enamel
Ultra-compact forged high-strength alloy steel pancake body engineered for extreme structural rigidity under 520-ton loads, coated with baked enamel for harsh outdoor construction and marine durability.
Dimensional Engineering Blueprint
Dimension designations (A: Collapsed Height, B: Extended Height, C: Lock Nut Thickness, D: Outside Diameter, E: Saddle Diameter, F: Piston Thread) correspond precisely to the Technical Specifications matrix below.
OEM Cross-Reference & Dimensional Interchangeability
The HSC-LP-Series is a single-acting, load-return low-height pancake lock-nut hydraulic cylinder engineered for sustained mechanical load holding in confined vertical clearances. Rated for 700 Bar (10,000 PSI) working pressure across 60 to 520 Metric Ton capacities, the mechanical lock nut threads down to physically support the load, allowing hydraulic pressure to be completely released. Standard equipped with a tilt saddle and overstroke overflow port for safe operation in bridge lifting and heavy construction maintenance. 60 - 520 Ton / 45 - 50 mm Stroke.
Enerpac®, SPX Flow®, Power Team®, Simplex®, Hytorc®, Holmatro® and other brand names are registered trademarks of their respective owners. HydraStark is an independent manufacturer and is not affiliated with, authorized or endorsed by these companies. OEM model numbers are listed for dimensional and specification reference only; please verify fit with our engineers before ordering.
RATED CAPACITY
60 - 520 METRIC TONS
STROKE RANGE
45 - 50 MM (1.77 - 1.97 IN)
COLLAPSED HEIGHT
125 - 192 MM (ULTRA-LOW PANCAKE PROFILE)
Real Product Details & Build Quality
Specifications
Model | Capacity @10,000 PSI (700 bar) Metric Ton | Stroke mm | Effective Area cm2 | Oil Capacity cm3 | Closed Height (A) mm | Extended Height (B) mm | Locknut Thickness (C) mm | Outside Diam. (D) mm | Saddle Diam. (E) mm | Piston Thread (F) | Weight Kg |
|---|---|---|---|---|---|---|---|---|---|---|---|
| HSC-LP-602 | 60 | 50 | 86.6 | 433 | 125 | 175 | 28 | 140 | 96 | Tr 104×4 | 14.5 |
| HSC-LP-1002 | 100 | 50 | 143.1 | 715 | 137 | 187 | 31 | 175 | 126 | Tr 134.5×6 | 23.5 |
| HSC-LP-1602 | 160 | 45 | 226.9 | 1021 | 148 | 193 | 40 | 220 | 159 | Tr 170×6 | 41.5 |
| HSC-LP-2002 | 200 | 45 | 283.4 | 1275 | 155 | 200 | 43 | 245 | 180 | Tr 190×6 | 57.0 |
| HSC-LP-2502 | 250 | 45 | 362.9 | 1633 | 159 | 204 | 44 | 275 | 200 | Tr 215×6 | 74.0 |
| HSC-LP-4002 | 400 | 45 | 551.3 | 2481 | 178 | 223 | 55 | 350 | 250 | Tr 265×6 | 134.0 |
| HSC-LP-5002 | 520 | 45 | 730.3 | 3286 | 192 | 237 | 62 | 400 | 290 | Tr 305×6 | 189.0 |
Required System Components
Frequently Asked Questions
Q1How does the HydraStark HSC-LP compare with the Enerpac CLP?
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How does the HydraStark HSC-LP compare with the Enerpac CLP?
The HydraStark HSC-LP range (HSC-LP Series Low-Height Pancake Lock-Nut Cylinders) is positioned as an alternative to the Enerpac CLP (OEM part numbers such as CLP-602, CLP-1002, CLP-1602, CLP-2002, CLP-2502, CLP-4002). Enerpac is a registered trademark of its owner; the reference is provided for dimensional and technical comparison only. Mounting dimensions, ratings and interfaces are listed in the specification table on this page — please confirm them against your existing equipment, or send us your OEM part number and our engineers will check compatibility before you order.
Q2What are the key specifications of the HSC-LP?
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What are the key specifications of the HSC-LP?
Rated Capacity: 60 - 520 Metric Tons; Stroke Range: 45 - 50 Mm (1.77 - 1.97 In); Collapsed Height: 125 - 192 Mm (ultra-low Pancake Profile); Holding Mechanism: Mechanical Lock Nut For Sustained Load Holding; Saddle & Protection: Integral Tilt Saddle & Stroke Overflow Port. Full specifications and dimensions are given in the specification table below.
Q3Which models are available in the HSC-LP series?
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Which models are available in the HSC-LP series?
The specification table lists 7 models: HSC-LP-602, HSC-LP-1002, HSC-LP-1602, HSC-LP-2002, HSC-LP-2502, HSC-LP-4002, HSC-LP-5002. For non-standard requirements, please describe them in the inquiry form.
Q4How is the HSC-LP tested before shipping?
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How is the HSC-LP tested before shipping?
Each unit is tested at 125% of its rated pressure before shipping (700 Bar rated, 875 Bar test pressure). This is above the 100% rated-load test required by ASME B30.1.
Q5What are the lead time, warranty and shipping options for the HSC-LP?
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What are the lead time, warranty and shipping options for the HSC-LP?
Lead time is typically 2–3 business days when the model is in stock and 7–35 business days otherwise. Warranty is 12 months after receipt of goods. Shipping is available by sea freight, air freight or international express (DHL, FedEx, UPS). Send your requirements through the inquiry form for an exact quotation and delivery date.