SS04 Steel Wire Spiral Hydraulic Hose - High Flexibility & High Pressure Resistant Hose

Construction
This hose consist of an inner tube of oil resistant synthetic rubber, four spirals steel wire reinforcement oil and weather resistant synthetic rubber cover.

Model:
SS04

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Description

FAQ

Engineered for heavy-duty dynamic hydraulic operations, the SS04 Steel Wire Spiral Hydraulic Hose is a premium high-pressure fluid transfer solution built for industrial operators, heavy equipment manufacturers, and mining enterprises requiring uncompromising performance in harsh working conditions. This hose features a robust three-part construction: an oil-resistant synthetic rubber inner tube, four layers of high-tensile steel wire spiral reinforcement, and a weather and abrasion-resistant synthetic rubber outer cover. Rated for a wide working temperature range of -40°C to +121°C, it is purpose-built to resolve the longstanding tradeoff between extreme pressure resistance and flexibility that plagues traditional spiral hydraulic hoses. With strict compliance with global industry standards including GB, DIN, RMA, AS, JIS, and SABS, the high flexibility high pressure hydraulic hose delivers consistent, safe performance for the most demanding hydraulic systems.

Fiber weaving	Steel wire winding	Wire braiding machine
Friction testing machine	High-speed joint venture	Storehouse

Core Features & Technical Advantages

Optimized 4-Spiral Reinforcement for Extreme Pressure Capacity

At the core of the SS04 Steel Wire Spiral Hydraulic Hose is its four-layer high-tensile steel wire spiral reinforcement, engineered to deliver industry-leading pressure resistance. With a maximum working pressure of up to 45MPa (6525 PSI) across sizes, it maintains a strict 4:1 burst pressure safety ratio, providing exceptional tolerance for pressure spikes and cyclic loading common in heavy-duty hydraulic systems. This reinforced structure ensures long-term durability and reduces the risk of hose failure in high-impulse applications.

Superior Flexibility for Dynamic Hydraulic Applications

Unlike standard spiral hydraulic hoses that suffer from excessive stiffness, our 4-spiral steel wire hydraulic hose incorporates a specialized spiral winding pattern and advanced material formulation to minimize rigidity. This design delivers a tighter minimum bend radius and greater ease of movement, even at extreme pressure ratings. The enhanced flexibility reduces installation complexity, minimizes hose stress during frequent flexing and vibration, and extends service life in dynamic working environments.

Harsh Environment-Ready Material Formulation

The inner tube is formulated to be fully compatible with petroleum-based hydraulic fluids, water-based fluids, and ethylene glycol aqueous solutions, preventing degradation and fluid contamination over time. The outer cover delivers exceptional resistance to oil, abrasion, weather, and ozone, ensuring reliable performance in outdoor, high-wear mining and construction sites. Full customization options are available, including adjusted diameter, spiral layers, bend radius optimization, cover properties, length, and fittings to meet site-specific requirements.

Applications & Industry Use Cases

Mining Machinery Hydraulic Systems

The mining machinery hydraulic hose is purpose-built for hydraulic systems in underground and surface mining equipment, where high pressure, frequent vibration, and abrasive working conditions are standard. It reliably delivers hydraulic fluids for roof supports, excavators, and loaders in extreme mining environments.

Construction & Heavy Mobile Equipment

Ideal for articulated construction machinery including excavators, cranes, and bulldozers, the hose handles the dynamic flexing and high-pressure demands of boom and arm hydraulic circuits, maintaining consistent performance in on-site construction operations.

Agricultural & Industrial Hydraulic Installations

It is also widely used in large agricultural machinery and industrial hydraulic presses, where consistent high-pressure fluid transfer and resistance to outdoor weather conditions are critical for uninterrupted operation.

Detailed Technical Specifications

size	Standard			I.D		W.D		O.D		max W.P		P.P		min B.P		min B.R		W.T
size	Dash	mm	inch	Min	Max	Min	Max	Min	max	MPa	Psi	MPa	Psi	MPa	Psi	inch	mm	kg/m
604SK	-4	6.3	1/4	6.4	6.8	12.2	13.2	14.4	15.4	45	6525	90	13050	180	26100	1.77	45	0.44
804SK	-5	8	5/16	8	8.5	13.8	14.8	15.9	16.9	43	6235	86	12470	172	24940	1.97	50	0.49
1004SK	-6	10	3/8	9.5	9.9	16.2	17.2	18.2	19.2	42	6090	84	12180	168	24360	2.17	55	0.59
1304SK	-8	12.5	1/2	12.7	13.3	19.3	20.3	21.3	22.3	35	5075	70	10150	140	20300	2.36	60	0.71
1604SK	-10	16	5/8	15.8	16.4	22.4	23.6	24.5	25.7	30	4350	60	8700	120	17400	3.15	80	0.85
1904SK	-12	19	3/4	19	19.6	26	27	28	29	28	4060	56	8120	112	16240	4.33	110	1.14
2504SK	-16	25	1	25	25.6	33.4	34.4	35.6	36.6	28	4060	56	8120	112	16240	5.91	150	1.39
3204SK	-20	31.5	1-1/4	31.6	32.4	43.2	44.4	45.8	47	22	3190	44	6380	88	12760	7.48	190	2.15
3804SK	-24	38	1-1/2	37.7	38.5	49.5	50.7	52.5	53.7	20	2900	40	5800	80	11600	9.84	250	2.52
5104SK	-32	51	2	50.6	51.5	62.1	63.7	65.1	66.7	20	2900	40	5800	80	11600	11.81	300	3.49

FAQ

Q1:What enables the SS04 spiral hose to combine high pressure resistance with enhanced flexibility?

A1:

The hose uses multiple layers of high-tensile steel wire spiral reinforcement (typically 4 or 6 spirals) optimized for both extreme pressure capacity and improved flexibility. The synthetic rubber inner tube and abrasion/weather-resistant cover further support smooth bending without compromising strength. This balanced design makes the SS04 ideal for dynamic hydraulic applications in construction machinery, agricultural implements, or mining equipment where hoses undergo frequent flexing or vibration at high pressures.

Q2:How does the SS04 hose's flexibility compare to traditional spiral hoses in high-pressure use?

A2:

The SS04 incorporates a specialized spiral winding pattern and material formulation that reduces stiffness, resulting in a tighter minimum bend radius and greater ease of movement than standard multi-spiral hoses at similar pressure ratings (typically 250–400 bar / 3625–5800 PSI WP depending on size). This enhanced flexibility minimizes installation challenges in mobile or articulated equipment while maintaining the high impulse resistance and durability required for petroleum-based hydraulic systems.

Q3:What pressure and safety features make the SS04 suitable for demanding hydraulic applications?

A3:

Working pressure (WP) is engineered for high to very high demands (e.g., 250–400 bar / 3625–5800 PSI across sizes), with a consistent 4:1 burst pressure safety ratio and strong proof pressure tolerance. The multi-spiral construction ensures excellent resistance to pressure spikes and cyclic loading, providing reliable performance and safety in heavy-duty applications like mobile hydraulics, construction tools, or agricultural machinery using petroleum-based fluids.

Q4:What customization is offered for the SS04 high-flexibility spiral hose? Special specifications can be developed

A4:

according to customer requirements, including adjustments to diameter, spiral layers, bend radius optimization, cover properties (e.g., enhanced abrasion or ozone resistance), length, or fittings while complying with standards such as GB, DIN, RMA, AS, JIS, and SABS. This allows precise tailoring for specific high-pressure, high-flex dynamic hydraulic needs in construction, agriculture, or mining environments operating from -40°C to +121°C.