Across global industrial maintenance, high-force hydraulic cylinders, hand pumps, and torque wrenches operate on a unified international pressure standard: 700 Bar (70 MPa / 10,000 PSI) with 3/8"-18 NPT high-pressure ports and screw-to-connect C-604 profile quick couplers. Because hydraulic interfaces are standardized, plant engineers can integrate HydraStark cylinders (HSC, HSCF, HSCH, HDC), pumps (HPM-S, HTW-P4E), and torque wrenches (HSW, HHW) directly into existing 700 Bar tool fleets without adapter modifications.
1. The 4 Technical Pillars of 700 Bar Fleet Interchangeability
When replacing worn cylinders or expanding bolting capacity in an existing plant fleet, maintenance engineers verify four physical interface parameters:
- 1. Rated Working Pressure Parity (700 Bar / 10,000 PSI): All HydraStark cylinders, torque wrenches, flange spreaders, and nut splitters are engineered for 700 Bar nominal working pressure and factory proof-tested to 125% (875 Bar) per ASME B30.1. Dedicated bolt tensioners (HST-S, HST-M) operate on the international 1,500 Bar (21,750 PSI) tensioning standard.
- 2. High-Pressure Coupler & Port Thread Parity (
3/8"-18 NPT): Every HydraStark cylinder comes fitted with a HQC-201B 3/8"-18 NPT high-flow female coupler half, which mates directly with industry-standardEnerpac C-604,Hi-Force CF4, andParker 3000couplers. Dual-line torque wrenches use standard 1/4" NPT 700 Bar quick-lock couplings. - 3. Collapsed Height (A), Stroke (B), and Bore Effective Area: HydraStark model numbers follow the universal industry nomenclature where the first digits denote capacity in tons and the last digit(s) denote stroke in inches (e.g.,
HSC-106= 10 Ton, 6" / 152 mm stroke, directly matchingRC-106;HSCH-202= 20 Ton hollow cylinder, 2" / 49 mm stroke, matchingRCH-202). - 4. Collar Threads (W), Plunger Threads (Q), and Base Mounting Holes (U/V/Z): Fixture-mounted cylinders preserve standard collar and plunger thread pitches so existing press frames and clevis attachments bolt straight on.
2. How to Decode HydraStark vs. Legacy OEM Model Codes
Understanding model code suffixes allows procurement and reliability engineers to cross-reference legacy parts lists in seconds:
- General-Purpose & Low-Height Cylinders:
RC-Series→ HSC Series (41 models, 5–100 Ton, e.g.,RC-256→HSC-256, 25 Ton, 158 mm stroke);RSM Flat-Jac→ HSCF Series (5–150 Ton);RCS Low-Height→ HSCL Series (10–100 Ton). - Hollow Plunger & Lock-Nut Cylinders:
RCH Single-Acting Hollow→ HSCH Series (10 models, 13–100 Ton, e.g.,RCH-302→HSCH-302);RRH Double-Acting Hollow→ HDCH Series (10 models, 30–150 Ton);CLL / HCL Lock-Nut→ HSC-LN Series (50–1,000 Ton);LPL Pancake→ HSC-LP Series (60–520 Ton). - Hydraulic Torque Wrenches:
S-Series Square Drive&Hytorc MXT→ HSW Series (9 models,HSW-1toHSW-50, 112–72,000 N·m, 3/4" to 2-1/2" drives);W-Series Low-Profile Hex&Hytorc Stealth→ HHW Series (10 models,HHW-2toHHW-30, 228–44,593 N·m, 19–175 mm AF).
3. Master 700 Bar / 1,500 Bar Series Cross-Reference Matrix
| Tool Category | Legacy OEM Reference Series* | HydraStark Direct Equivalent | Tonnage / Torque Range | Example SKU Mapping |
|---|---|---|---|---|
| Single-Acting Cylinders | Enerpac RC-Series (Trio) | HSC Series (41 models) | 5 – 100 Ton @ 700 Bar | RC-106 → HSC-106 | RC-506 → HSC-506 |
| Flat-Jac & Low-Height Cylinders | Enerpac RSM / RCS Series | HSCF (8) / HSCL (5 models) | 5 – 150 Ton / 10 – 100 Ton | RSM-300 → HSCF-30 | RCS-502 → HSCL-502 |
| Single & D/A Hollow Cylinders | Enerpac RCH / RRH Series | HSCH (10) / HDCH (10 models) | 13 – 100 Ton / 30 – 150 Ton | RCH-202 → HSCH-202 | RRH-606 → HDCH-606 |
| Double-Acting Cylinders | Enerpac RR / CLRG Series | HDC (18) / HDCX (42 models) | 10 – 300 Ton / 50 – 1,000 Ton | RR-1006 → HDC-1006 | CLRG-5006 → HDCX-5006 |
| Lock-Nut & Pancake Cylinders | Enerpac HCL / CLL / LPL Series | HSC-LN / HSC-LNH / HSC-LP | 50 – 1,000 Ton @ 700 Bar | CLL-1006 → HSC-LN-1006 | LPL-1002 → HSC-LP-1002 |
| Square Drive Torque Wrenches | Enerpac S-Series / Hytorc MXT | HSW Series (9 models) | 112 – 72,000 N·m @ 700 Bar | HSW-1, HSW-3, HSW-5, HSW-8, HSW-10, HSW-20, HSW-25, HSW-35, HSW-50 |
| Low-Profile Hex Wrenches | Enerpac W-Series / Hytorc Stealth | HHW Series (10 models) | 228 – 44,593 N·m @ 700 Bar | HHW-2, HHW-4, HHW-8, HHW-12, HHW-14, HHW-16, HHW-18, HHW-30 |
| 1,500 Bar Bolt Tensioners | Tentec / Boltight / Hydratight Topside | HST-S (28) & HST-M Series | 282 – 3,216 kN @ 1,500 Bar | M24 – M100 ASME B16.5 / Wind Tower Studs |
| 700 Bar Quick Couplers & Pumps | Enerpac C-604 / P-392 / P-80 | HQC-201 / HPM-P / HPM-S | 700 Bar (10,000 PSI) | C-604 → HQC-201 | P-80 → HPM-S-2000 |
Frequently Asked Questions (FAQ)
Can I connect a HydraStark HSC cylinder directly to an existing Enerpac hand pump or electric pump?
Yes. All HydraStark 700 Bar cylinders come factory-installed with an HQC-201B 3/8"-18 NPT female quick coupler half, which threads directly onto any existing 700 Bar (10,000 PSI) hose fitted with an Enerpac C-604, Hi-Force CF4, or Parker 3000 male coupler.
Are HHW low-profile hexagon cassettes and HS-RED reducer bushings interchangeable?
Within the HydraStark HHW Series (HHW-2, HHW-4, HHW-8, HHW-16, HHW-32, HHW-45), each powerhead accepts interchangeable hexagon links (19 to 175 mm AF) and HS-RED drop-in hex reducer bushings (HS-RED-3227 to HS-RED-155145). Existing 700 Bar twin-line torque wrench pumps with 1/4" NPT couplers can drive HHW and HSW wrenches directly.
How can I verify exact dimensional parity before replacing a fixture-mounted cylinder?
Use our interactive OEM Cross-Reference Directory (/cross-reference) or open any HydraStark product page to inspect the full multi-column dimension matrix—including Collapsed Height (A), Extended Height (B), Outside Diameter (D), Saddle Diameter (J), Collar Thread (W), and Base Mounting Bolt Circle (U/V/Z).
*Trademark Disclaimer: Enerpac®, Hytorc®, Hi-Force®, Tentec®, Boltight®, Hydratight®, and Parker® are registered trademarks of their respective owners. HydraStark is an independent manufacturer of industrial hydraulic tools; third-party brand names and model designations are referenced strictly for technical cross-reference and dimensional compatibility identification.