What are hydraulic rubber hoses?
Hydraulic rubber hose primarily used in hydraulic systems to control and provide power. They are designed to transfer hydraulic oil primarily (hydraulic fluid compliant with ISO 6743-4, apart from HFD R, HFD S, and HFD T fire-resistant fluids). The maximum operating temperature for water-based fluids is 70°C. For general hydraulic oils, the maximum operating temperature can reach 100°C. They are widely utilized in machinery such as bulldozers and cranes to move components and operate equipment.
Hydraulic Rubber Hoses Types
Hydraulic hoses are designed for harsh environments. These hoses have a multi-layered structure. The innermost layer is typically made of thermoplastic or synthetic rubber, with an outer layer reinforced with metal wires or fibers. The outer layer is also made of rubber, but its formulation resists abrasion and environmental damage from oils, chemicals, etc.
This multi-layered construction allows hydraulic hoses to withstand high pressure and harsh environments. They are crucial in the hydraulic systems of heavy machinery, such as those in construction equipment, aircraft, and automobiles. Their ability to operate under high pressure makes them an indispensable component in systems requiring precise and efficient delivery of hydraulic fluid.
Typical hydraulic rubber hoses are classified into three different structural types:
Fabric Textile-Braided Rubber Hydraulic Hoses (One or two layers)
Textile braided hydraulic hose’s mainly in low pressure condition. It consists of three parts: tube, reinforce and cover. The tube is high quality black synthetic rubber. Thus it is resistant to oil, wear and corrosion. Therefore, the hose widely serves to deliver petroleum and water based hydraulic fluids. While the reinforce is 1 or 2 layer of textile braid. Then it makes the hose more flexible and light in wieght. The cover is made from high quality synthetic rubber, which is resistant to wear, corrosion, weather, ozone, cut, aging and sunlight. The hose has longer service life as a result.
Tube: oil resistant synthetic rubber.
Reinforcement: One or two braid suitable fiber.
Cover: oil and weather resistant synthetic rubber.
Steel Wire-Braided Rubber Hydraulic Hoses (One, two, or three layers)
Steel wire braided rubber hydraulic hose is suitable for medium pressure hydraulic lines. It has a high tensile braided steel wire reinforce. It is composed of three parts: tube, reinforce and cover. The tube is made from oil resistant synthetic rubber. While the reinforce is one or two layer of high tensile braided steel wire. Thus the rubber hydraulic hose can bear higher pressure. While the cover is made from high quality synthetic rubber. Then it helps prevent wear, corrosion, weather, ozone, aging, sunlight and cut. Therefore, the hydraulic hose r1 has longer service life.
Tube: high quality synthetic rubber compounds.
Reinforcement: one or two-braid high tensile steel wire.
Cover: abrasion and weather resistant synthetic rubber.
Steel Wire-Spiral Hydraulic Rubber Hoses (Four or six layers)
Steel wire spiraled hydraulic hose is suitable for mine hydraulic support and the related equipment. It is composed of three parts: tube, reinforcement and cover. The tube is made from black oil resistant synthetic rubber, making the hose resistant to abrasion and corrosion. The reinforcement is made from four layers of high tensile and high strength spiraled steel wire which is specially designed for rubber hose, making the hose perfectly resistant to high pressure. The cover is made from high quality black synthetic rubber, making the hose resistant to abrasion, corrosion, cut, weather, ozone, oil and aging. More importantly, the appearance is cloth surface rubber. Therefore, the hose has longer service life.
Tube: black and oil resistant synthetic rubber.
Reinforcement: multiple layers of spirally wrapped high tensile steel wire
Cover: abrasion and weather resistant synthetic rubber.
Hydraulic rubber hoses are manufactured in imperial sizes with standardized inner diameters. The most common hose standards include European EN, International ISO, and American SAE.
Standard symbols and key specifications, such as diameter, working pressure, and production date, are marked on the hose. Additionally, the hose may feature a specific name provided by the manufacturer or customer.
Features of Hydraulic Rubber Hose
Flexible
Hydraulic rubber hoses have small minimum bend radius. This type of sinopulse rubber hydraulic hose has a minimum bend radius of 33mm (Fiber Reinforced Nonmetallic Rubber Hydraulic Hose).
High Pressure
Rubber hydraulic hoses typically withstand pressures from 3000 PSI to 10000 PSI, or even higher. This high pressure capacity is provided by their reinforcing layer. The reinforcing layer is usually made of steel wire or steel wire braid, which allows the hydraulic hose to withstand extremely high pressures while maintaining sufficient flexibility to adapt to different working environments and operational requirements. Sinopulse manufactures rubber hydraulic hoses that exceed the maximum working pressure specified by standards. For example, the SAE 100R2AT can reach a maximum pressure of 6500 psi. Burst pressure meets ISO 1402 standards.
High Temperature
Generally, rubber hydraulic hoses can withstand temperatures between -40℃ and 100℃. If the recommended temperature is exceeded, the rubber starts to lose its flexibility and stiffens, then leakage starts to occur at hose ends, close to the fittings. In such cases, hoses with a higher operating temperature range should be used.This range is from -40°C to +100°C (with peaks up to 125°C) for hoses with textile braids ( 2TE, 3TE type), with compact steel wire braids (1SC, 2SC,1SN, 2SN), and for a certain group of hoses with spiral braids (4SP, 4SH). For spiral hydraulic hoses with constant working pressure regardless of diameter (R12, R13, R15) the range is from -40°C to +121°C (with peaks up to 125°C).
Abrasion Resistance
The abrasion resistance of rubber hydraulic hoses is tested according to EN ISO 6945. This standard defines the weight loss of a hose sample after a specific number of cycles and a vertically applied force.
After 2000 cycles of testing under a vertical force of 25 ± 0.5 N, the average weight loss of type 1SN and 2SN hoses is 0.5 g. Sinopulse rubber hydraulic hoses are even more abrasion resistant, with an average weight loss of 0.1 g or even lower.
Ozone Resistance
Ozone testing of hydraulic rubber hoses prevents damage to rubber and plastic materials, which can lead to aging, cracking, and failure of the hose. Good ozone resistance ensures hose lifespan. Sinopulse's rubber hydraulic hoses show no signs of aging or cracking after 500 hours of ozone testing.
High Pulse Pressure, Fatigue Resistant
Sinopulse provides pulse pressure test data (pulse pressure tolerance is defined as the number of pressure pulse cycles a hydraulic hose should withstand when tested according to the procedures specified in ISO 6803). Our EN853 standard specifies that 2SN type hoses must withstand at least 200,000 pulse cycles at 133% of the maximum operating pressure. The EN857 standard specifies that 4SH type hoses must withstand at least 400,000 pulse cycles at 133% of the maximum operating pressure.
Long Service Life
The service life of hydraulic rubber hoses is affected by many internal and external factors. Assuming a specific hose has been correctly selected based on operating parameters (pressure, temperature, medium, etc.), the next question is how long that hose's service life will be.
Sinopulse High pressure hydraulic rubber hose
EN 856 4SH High pressure hydraulic rubber hose
Tube: black synthetic rubber, making the hose resistant to abrasion, corrosion and oil.
Reinforcement: four layers of high tensile and high strength spiraled steel wire, making the hose highly resistant to high pressure.
Cover: high quality black synthetic rubber, making the hose resistant to abrasion, corrosion, weather, ozone, cut, oil and aging.
Working temperature: -40 °C to +100 °C
EN 856 4SH High pressure hydraulic rubber hose Technical Specification
| Size | Inside Diameter | Outside Diameter | Working Pressure | Bursting Pressure | Bend Radius | Weight | Length | ||||
| Dash | mm | Inch | mm | mm | bar | psi | bar | psi | mm | kgs/m | m |
| 4SH-12 | 19.1 | 3/4" | 18.6-19.8 | 31.4-33.0 | 420 | 6090 | 1680 | 24360 | 280 | 1.600 | 20/40 |
| 4SH-16 | 25.4 | 1" | 25.0-26.4 | 37.5-39.9 | 380 | 5510 | 1520 | 22040 | 340 | 2.200 | 20/40 |
| 4SH-20 | 31.8 | 1-1/4" | 31.4-33.0 | 43.9-47.1 | 325 | 4713 | 1300 | 18850 | 460 | 2.750 | 20/40 |
| 4SH-24 | 38.1 | 1-1/2" | 37.7-39.3 | 51.9-55.1 | 290 | 4205 | 1160 | 16820 | 560 | 3.750 | 20/40 |
| 4SH-32 | 50.8 | 2" | 50.4-52.0 | 66.5-69.7 | 250 | 3625 | 1000 | 14500 | 700 | 4.950 | 20/40 |
Medium-pressure hydraulic rubber hose
EN 853 1SN Single-layer braided steel wire hydraulic rubber hose
Tube: high quality synthetic rubber compounds, making the hose resistant to abrasion and corrosion.
Reinforcement: one layer of high tensile braided steel wire, making hose resistant to high pressure.
Cover: abrasion, weather, ozone and aging resistant synthetic rubber.
Working temperature: -40 °C to +100 °C (-40 °F to +212 °F).
EN 853 1SN medium pressure hydraulic rubber hose Technical Specification
| Size | Inside Diameter | Outside Diameter | Working Pressure | Bursting Pressure | Bend Radius | Weight | Length | ||||
| Dash | mm | Inch | mm | mm | bar | psi | bar | psi | mm | kgs/m | m |
| 1SN-03 | 4.8 | 3/16" | 4.6-5.4 | 12.5 MAX . | 250 | 3625 | 1000 | 14500 | 90 | 0.240 | 50/100 |
| 1SN-04 | 6.4 | 1/4" | 6.2-7.0 | 14. 1MAX . | 225 | 3263 | 900 | 13050 | 100 | 0.255 | 50/100 |
| 1SN-05 | 7.9 | 5/16" | 7.7-8.5 | 15.7 MAX . | 215 | 3118 | 860 | 12470 | 115 | 0.304 | 50/100 |
| 1SN-06 | 9.5 | 3/8" | 9.3-10.1 | 18.1 MAX . | 180 | 2610 | 720 | 10440 | 130 | 0.390 | 50/100 |
| 1SN-08 | 12.7 | 1/2" | 12.3-13.5 | 21.4 MAX . | 160 | 2320 | 640 | 9280 | 180 | 0.472 | 50/100 |
| 1SN-10 | 15.9 | 5/8" | 15.5-16.7 | 24.5 MAX . | 130 | 1885 | 520 | 7540 | 200 | 0.581 | 50/100 |
| 1SN-12 | 19.1 | 3/4" | 18.6-19.8 | 28.5 MAX . | 105 | 1523 | 420 | 6090 | 240 | 0.690 | 50/100 |
| 1SN-16 | 25.4 | 1" | 25.0-26.4 | 36.6 MAX . | 87 | 1261 | 348 | 5044 | 300 | 0.830 | 50/100 |
| 1SN-20 | 31.8 | 1-1/4" | 31.4-33.0 | 44.8 MAX . | 63 | 914 | 252 | 3654 | 420 | 1.325 | 20/40 |
| 1SN-24 | 38.1 | 1-1/2" | 37.7-39.3 | 52.1 MAX . | 50 | 725 | 200 | 2900 | 500 | 1.500 | 20/40 |
| 1SN-32 | 50.8 | 2" | 50.4-52.0 | 65.5 MAX . | 40 | 580 | 160 | 2320 | 630 | 1.875 | 20/40 |
Low pressure hydraulic rubber hose
EN 854 2TE Flexible Textile Braided hydraulic rubber hose
Tube: oil resistant synthetic rubber.
Reinforcement: two-braid suitable fiber.
Cover: oil and weather resistant synthetic rubber.
Temperature: -40 °C to +100 °C (-40 °F to +212 °F).
EN 854 2TE Flexible Textile Braided hydraulic rubber hose Technical Specification
| Size | Inside Diameter | Outside Diameter | Working Pressure | Bursting Pressure | Bend Radius | Weight | Length | ||||
| Dash | mm | Inch | mm | mm | bar | psi | bar | psi | mm | kgs/m | m |
| 2TE-3 | 4.8 | 3/16" | 4.4-5.2 | 11.0-12.6 | 80 | 1160 | 320 | 4640 | 25 | 0.2 | 50/100 |
| 2TE-4 | 6.4 | 1/4" | 5.9-6.9 | 12.6-14.2 | 75 | 1087.5 | 300 | 4350 | 40 | 0.16 | 50/100 |
| 2TE-5 | 8 | 5/16" | 7.4-8.4 | 14.1-15.7 | 68 | 986 | 272 | 3944 | 50 | 0.18 | 50/100 |
| 2TE-6 | 9.5 | 3/8" | 9.0-10.0 | 15.7-17.3 | 63 | 913.5 | 252 | 3654 | 60 | 0.19 | 50/100 |
| 2TE-8 | 12.7 | 1/2" | 12.1-13.3 | 18.7-20.7 | 58 | 841 | 232 | 3364 | 70 | 0.26 | 50/100 |
| 2TE-10 | 16 | 5/8" | 15.3-16.5 | 22.9-24.9 | 50 | 725 | 200 | 2900 | 90 | 0.35 | 50/100 |
| 2TE-12 | 19 | 3/4" | 18.2-19.8 | 26.0-28.0 | 45 | 652.5 | 180 | 2610 | 110 | 0.4 | 50/100 |
| 2TE-16 | 25.4 | 1" | 24.6-26.2 | 32.9-35.9 | 40 | 580 | 160 | 2320 | 150 | 0.6 | 50/100 |
SAE 100R6 Low Pressure hydraulic rubber hose
Tube: high quality black oil resistant synthetic rubber.
Reinforcement: one layer of braided textile, making the hose lightweight and flexible.
Cover: high quality abrasion, corrosion, weather, ozone synthetic rubber.
Working temperature: -40 °C to +100 °C.
SAE 100R6 Low Pressure hydraulic rubber hose Technical Specification
| Size | Inside Diameter | Outside Diameter | Working Pressure | Bursting Pressure | Bend Radius | Weight | Length | ||||
| Dash | mm | Inch | mm | mm | bar | psi | bar | psi | mm | kgs/m | m |
| R6-03 | 4.8 | 3/16" | 4.4-5.2 | 10.3-11.9 | 35 | 508 | 140 | 2030 | 50 | 0.100 | 50/100 |
| R6-04 | 6.4 | 1/4" | 5.9-6.9 | 11.9-13.5 | 28 | 406 | 112 | 1624 | 65 | 0.156 | 50/100 |
| R6-05 | 7.9 | 5/16" | 7.4-8.4 | 13.5-15.1 | 28 | 406 | 112 | 1624 | 75 | 0.178 | 50/100 |
| R6-06 | 9.5 | 3/8" | 9.0-10.1 | 15.1-16.7 | 28 | 406 | 112 | 1624 | 75 | 0.202 | 50/100 |
| R6-08 | 12.7 | 1/2" | 12.1-13.3 | 17.7-19.7 | 28 | 406 | 112 | 1624 | 100 | 0.280 | 50/100 |
| R6-10 | 15.9 | 5/8" | 15.3-16.5 | 22.2-23.8 | 24 | 348 | 96 | 1392 | 125 | 0.330 | 50/100 |
| R6-12 | 19.1 | 3/4" | 18.2-19.8 | 25.4-27.8 | 21 | 305 | 84 | 1218 | 150 | 0.460 | 50/100 |
| R6-16 | 25.4 | 1" | 24.6-26.2 | 32.2-34.6 | 12 | 174 | 48 | 696 | 155 | 0.590 | 50/100 |
Compact Hydraulic Rubber Hoses
EN 857 2SC Compact hydraulic rubber hose
Tube: high quality synthetic rubber, making the hose resistant to abrasion, corrosion and oil.
Reinforcement: two layers of high tensile braided steel wires, making the hose work well in high pressure environment.
Cover: abrasion, corrosion, weather, ozone, aging, sunlight and cut resistant synthetic rubber, making the hose have long service life.
Working temperature: -40 °C to +100 °C.
EN 857 2SC Compact hydraulic rubber hose Technical Specification
| Size | Inside Diameter | Outside Diameter | Working Pressure | Bursting Pressure | Bend Radius | Weight | Length | ||||
| Dash | mm | Inch | mm | mm | bar | psi | bar | psi | mm | kgs/m | m |
| 2SC-04 | 6.4 | 1/4" | 6.2-7.0 | 14.2 MAX . | 400 | 5800 | 1600 | 23200 | 75 | 0.290 | 50/100 |
| 2SC-05 | 7.9 | 5/16" | 7.7-8.5 | 16.0 MAX . | 350 | 5075 | 1400 | 20300 | 85 | 0.330 | 50/100 |
| 2SC-06 | 9.5 | 3/8" | 9.3-10.1 | 18.3 MAX . | 330 | 4785 | 1320 | 19140 | 90 | 0.420 | 50/100 |
| 2SC-08 | 12.7 | 1/2" | 12.3-13.5 | 21.5 MAX . | 275 | 3988 | 1100 | 15950 | 130 | 0.550 | 50/100 |
| 2SC-10 | 15.9 | 5/8" | 15.5-16.7 | 24.7 MAX . | 250 | 3625 | 1000 | 14500 | 170 | 0.650 | 50/100 |
| 2SC-12 | 19.1 | 3/4" | 18.6-19.8 | 28.6 MAX . | 215 | 3118 | 860 | 12470 | 200 | 0.790 | 50/100 |
| 2SC-16 | 25.4 | 1" | 25.0-26.4 | 36.6 MAX . | 165 | 2393 | 660 | 9570 | 250 | 1.180 | 50/100 |
High temperature resistant hydraulic rubber hose
SAE 100R5 High Temperature hydraulic rubber hose
Tube: High-strength synthetic rubber.
Reinforcement: One layer of high-strength steel wire mesh.
Cover: Braided textile sheath, Black or Blue color.
TEMPERATURE: -40°C to +135°C petroleum-based fluids (intermittent 155°C).
SAE 100R5 High Temperature hydraulic rubber hose Technical Specification
| Size | Inside Diameter | Outside Diameter | Working Pressure | Bursting Pressure | Bend Radius | Weight | Length | ||||
| Dash | mm | Inch | mm | mm | bar | psi | bar | psi | mm | kgs/m | m |
| R5H-04 | 4.8 | 3/16" | 4.8-5.5 | 12.7-13.7 | 210 | 3045 | 840 | 12180 | 75 | 0.130 | 50/100 |
| R5H-05 | 6.4 | 1/4" | 6.4-7.2 | 14.3-15.3 | 210 | 3045 | 840 | 12180 | 85 | 0.160 | 50/100 |
| R5H-06 | 7.9 | 5/16" | 7.9-8.7 | 16.7-17.6 | 157 | 2277 | 628 | 9106 | 100 | 0.200 | 50/100 |
| R5H-08 | 10.3 | 13/32" | 10.3-11.1 | 18.9-20.0 | 140 | 2030 | 560 | 8120 | 115 | 0.240 | 50/100 |
| R5H-10 | 12.7 | 1/2" | 12.7-13.7 | 22.8-24.0 | 122 | 1769 | 488 | 7076 | 140 | 0.350 | 50/100 |
| R5H-14 | 15.9 | 5/8" | 15.9-17.0 | 26.8-28.0 | 105 | 1523 | 420 | 6090 | 165 | 0.400 | 50/100 |
| R5H-16 | 22.2 | 7/8" | 22.2-23.3 | 30.6-32.2 | 56 | 812 | 224 | 3248 | 185 | 0.450 | 50/100 |
| R5H-20 | 28.6 | 1-1/8" | 28.6-29.8 | 37.3-38.9 | 43 | 624 | 172 | 2494 | 230 | 0.550 | 50 |
| R5H-24 | 34.9 | 1-3/8" | 34.9-36.1 | 43.7-45.2 | 35 | 508 | 140 | 2030 | 265 | 0.700 | 50 |
| R5H-32 | 46.0 | 1-13/16" | 46.0-47.2 | 55.2-57.6 | 24 | 348 | 96 | 1392 | 335 | 0.990 | 50 |