SS04 Ultra-Flexible High Pressure Hydraulic Hose - 4 Spiral Steel Wire Reinforced for Extreme Flexibility And High Pulse Resistance

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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Product Description

FAQ

Applications

For delivery of petroleum base hydraulic fluids, water base fluid, ethylene glycol aqueous solution etc in hydraulic system of mining machinery.Working temperature range: -40°C ～ +100°C.

Technical Parameters

size	Standaid			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

Production Workshop

Fiber weaving

Steel wire winding

Wire braiding machine

Friction testing machine

High-speed joint venture

Storehouse

FAQ

Q1:How does the SS04 achieve ultra-flexibility while maintaining 4-spiral high-pressure performance?

A1:

The SS04 incorporates four high-tensile steel wire spirals wound in an optimized pattern that balances extreme pressure resistance with significantly improved flexibility. The synthetic rubber inner tube and abrasion/weather-resistant cover are formulated for low stiffness, resulting in a tighter bend radius and better dynamic performance than conventional 4-spiral hoses—ideal for applications with constant flexing, vibration, or articulation in construction machinery or mobile hydraulics using petroleum-based fluids.

Q2:What pulse and impulse resistance benefits does the 4-spiral reinforcement provide?

A2:

The four-spiral steel wire design excels in high-pulse and impulse cycles, absorbing repeated pressure surges without fatigue or volumetric expansion issues common in braided hoses. With working pressures typically 250–400 bar / 3625–5800 PSI (depending on size) and a 4:1 burst safety ratio, the SS04 delivers outstanding durability in demanding dynamic systems like agricultural implements, mining tools, or construction equipment where hydraulic lines endure frequent on/off pressure changes.

Q3:Why is extreme flexibility critical for high-pressure hoses in dynamic applications?

A3:

In equipment with moving parts, articulated booms, or vibrating environments, hoses must flex repeatedly without kinking or failing under pressure. The SS04's ultra-flexible construction reduces stress on the spiral layers during movement, minimizes required installation space, lowers the risk of abrasion damage from rubbing, and extends overall service life in high-pressure, high-motion scenarios such as mobile cranes, excavators, or harvesters.

Q4:What customization options are available to optimize the SS04 for specific dynamic high-pressure needs?

A4:

Special specifications can be developed according to customer requirements, including adjustments to diameter, spiral configuration, bend radius tuning, cover enhancements (e.g., extra abrasion or ozone resistance), length, or fittings while complying with standards like GB, DIN, RMA, AS, JIS, and SABS. This allows precise matching to unique dynamic hydraulic demands in construction, agriculture, or mining applications operating from -40°C to +121°C.