Parker 3HD Series is a heavy-duty NFPA-compliant tie-rod hydraulic cylinder 3HD 7.00 x 3.000 x 24.00 J N N H 3HD 8.00 x 5.000 x 36.00 H B S F High Quality in Stock
Parker 3HD Series Heavy-Duty Hydraulic Cylinders
Parker 3HD Series is a heavy-duty, NFPA-compliant tie-rod hydraulic cylinder from the Gen II 2H/3H family, designed for 3,000 psi (210 bar) nominal operating pressure. It is a high-performance variant featuring a Bolt-On Gland (non-threaded clamp-type gland) design, specifically engineered for large bore sizes (7.00″ & 8.00″) demanding robust construction, easy maintenance, and leak-free operation in severe industrial environmentsParker.
Typical Applications:
- Heavy Industrial Machinery: Presses, metal forming, stamping lines.
- Material Handling: Forklifts, lift platforms, large conveyors.
- Machine Tools: CNC machines, injection molding, heavy fixtures.
- Construction & Mining: Large equipment, hydraulic jacks, crushers.
- Oil & Gas: Rig systems, valve actuators.
A: Depends on the style of tie-rod. We would like to cast and forge once the quantity above 100 pcs.
A: Well, it depends on the quantity and style of hydrualic cylinders, at least 60 days if we make casting and forging, at least 35 days by maching.
A: Sure, we are the manufacutuer and trading of hydraulic cylinder.
A: Double-Acting-have a port at each end, supplied with hydraulic fluid for both the retraction and extension. Single-Acting-hydraulic fluid enters through
a port at one end of the cylinder, which extends the rod by means of area difference. An external force or gravity returns the piston rod.
A: Sure. Show us the drawing, we will quote for you soonest.
A: Yes, we make and supply a wide rang of hydrualic cylinders as a proffetional manufacture, there are only some kinds of them show on the website. Freely contact us to get more information.
- Design Type: Heavy-duty tie-rod, square head, bolt-on gland retentionParker
- Standard Pressure:
- Operating Pressure: 3,000 psi (210 bar)
- Proof Pressure: 4,500 psi (315 bar)
- Bore Sizes: 7.00", 8.00"
- Rod Diameters: 3.000", 3.500", 4.000", 4.500", 5.000", 5.500"
- Standard Strokes: Customizable to any practical length
- Fluid Compatibility: Standard petroleum-based hydraulic fluids; compatible with synthetic fluids via seal optionsParker
- Temperature Range: -10°F to +165°F (-23°C to +74°C) (standard seals)
- Warranty: 12-month manufacturer's warranty
Gland & Sealing System
- Bolt-On Gland: Non-threaded gland secured by a circular retainer, enabling external removal without full cylinder disassembly, drastically reducing maintenance downtimeParker.
- Tri-Lip Rod Seal: Multi-edge polyurethane primary seal for "dry-rod" performance, superior abrasion/extrusion resistance, and self-compensating for deflection.
- Double-Service Wiperseal™: Polyurethane wiper that cleans the rod on extension and retraction, preventing contamination.
- Bronze Rod Bearing: Long internal bearing surface located ahead of seals, ensuring constant lubrication and enhanced side-load resistanceParker.
Piston & Construction
- Universal Piston: Design compatible with four seal options (O-ring, U-cup, etc.), allowing field seal changes to adapt to different fluids/pressures.
- High-Strength Tie Rods: Constructed with high-tensile steel for maximum structural integrity under heavy loadsParker.
- Hard Chrome-Plated Rod: Precision-ground, polished rod for superior wear resistance and seal protection.
Cushions (Optional)
Adjustable Stepped Cushions: Available on head, cap, or both ends. Reduces end-of-stroke shock by 40–60%, protecting machinery and ensuring smooth deceleration.
