A 700 bar (10,000 psi) high-pressure hose connecting hydraulic cylinders, jacks and nut splitters to the pump. Polyhose PH351 hose, supplied with 3/8″ NPT end fittings crimped on both ends, made up to the length your application needs.
A 700 bar hydraulic hose assembly is a ready-to-use high-pressure hose with couplers crimped on both ends. It connects a hand or electric hydraulic pump to 700 bar equipment such as hydraulic cylinders, jacks and nut splitters. Hydro Bard HPH assemblies are made with Polyhose PH351 hose; the standard connection is a 3/8″ NPT end fitting.
PH351 has a thermoplastic elastomer core, aramid fibre braid plus steel wire braid reinforcement and a polyurethane cover — a light, abrasion-resistant line with low change in length under pressure.
| Hose | Inner Dia. | Outer Dia. | Working | Burst | Safety | Min. Bend R | Weight |
|---|---|---|---|---|---|---|---|
| PH351-03 | 3/16″ (4.8 mm) | 11.7 mm | 700 bar | 2,800 bar | 4:1 | 50 mm | 170 g/m |
| PH351-04 | 1/4″ (6.4 mm) | 13.7 mm | 700 bar | 2,800 bar | 4:1 | 70 mm | 242 g/m |
| PH351-06 | 3/8″ (9.5 mm) | 18.8 mm | 700 bar | 2,800 bar | 4:1 | 100 mm | 387 g/m |
| PH351-08 | 1/2″ (12.7 mm) | 22.2 mm | 700 bar | 2,080 bar | ≈3:1 | 180 mm | 514 g/m |
Values are from the Polyhose PH351 datasheet and apply to the hose itself. The working pressure of the complete assembly also depends on the couplers and fittings used. The 3/4″ and 1″ PH351 sizes are not in the 700 bar class (350 and 300 bar) and are therefore not listed.
| Working Pressure | 700 bar (10,000 psi) |
| Burst Pressure | 2,800 bar (3/16″, 1/4″, 3/8″) · 2,080 bar (1/2″) |
| Hose | Polyhose PH351 — thermoplastic elastomer core, aramid fibre + steel wire braid, polyurethane cover |
| Standard Connection | 3/8″ NPT end fitting, crimped on both ends — other connections to order |
| Length | 1 m · 2 m · 3 m · 5 m or project-specific |
| Temperature | −40 °C … +100 °C continuous (max. +70 °C with air and water-based fluids) |
| Fluids | Petroleum-based, synthetic and water-based hydraulic fluids |
| Twin / Multi Line | With different hose combinations, on request |
3/16″, 1/4″, 3/8″ or 1/2″ — set by pump flow, line length and bend radius.
1 m, 2 m, 3 m, 5 m or a project-specific length.
3/8″ NPT end fitting as standard. If your equipment differs, state it with your order.
A crimped, ready-to-use hose assembly — made to your application rather than limited to stock sizes.
700 bar is approximately 10,000 psi. All four sizes of the Polyhose PH351 hose used in HPH assemblies (3/16″, 1/4″, 3/8″ and 1/2″) are rated for 700 bar (10,000 psi) working pressure.
Burst pressure is 2,800 bar for 3/16″, 1/4″ and 3/8″ (4:1) and 2,080 bar for 1/2″ (approximately 3:1). These values apply to the hose itself; the working pressure of the complete assembly also depends on the couplers and fittings used.
As standard it is supplied ready to use with 3/8″ NPT end fittings crimped on both ends. If your equipment uses a different connection, state it with your order; the connection type can be changed to order.
1 m, 2 m, 3 m and 5 m are standard lengths; project-specific lengths are also made to order.
No. Bolt tensioners (HRT, HCK) and hydraulic nuts (HHN) operate at 1500 bar; a 700 bar hose must not be used on these systems. Use a 1500 bar high-pressure hose for these applications.
3/16″: 50 mm · 1/4″: 70 mm · 3/8″: 100 mm · 1/2″: 180 mm. Do not bend the hose tighter than this radius and do not kink it at the coupler.
Continuous use from −40 °C to +100 °C with petroleum-based, synthetic and water-based hydraulic fluids. With air and water-based fluids the temperature must not exceed +70 °C.
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