Categories
Categories
SL244
EN 856-4SH | MSHA
WIRE SPIRAL HYDRAULIC HOSE
Key words:
Classification:
Quick Overview：
The EN 856-4SP Hydraulic Hose—an MSHA-approved 4-wire spiral pressure line—is a heavy-duty fluid conduit constructed with a hot oil-resistant core and four-ply steel reinforcement. Engineered for high-impulse mining drills and tunnel jumbos, this flame-resistant structure withstands severe abrasion down to -40°C, maximizing underground operational uptime to reduce total ownership costs.
Description
EN 856-4SP | MSHA
Application:
• Conveying water-based, petroleum-based, and biodegradable hydraulic fluids
• Heavy-duty hydraulic operations in construction, mining, and tunneling equipment
• Suitable for pile drivers, tunnel jumbos, mining drills, rock crushers, and large construction machinery
• Ideal for high-load, high-impulse hydraulic systems requiring durability and reliability
Construction & Materials:
• Inner Tube: Black, hot oil-resistant synthetic rubber
• Reinforcement: Four plies of spiraled high-tensile steel wire for high-pressure durability
• Outer Layer: Black, oil- and weather-resistant synthetic rubber
• Temperature Range: -40°C to +100°C (-40°F to +212°F)
• Available Sizes: 5/8"–2" (DN16–DN50)
Key Features & Benefits:
• Provides steady, reliable performance in heavy-duty applications
• Maintains stability under high-impulse, high-load operations
• Superior working pressure for demanding hydraulic systems
• Excellent resistance to oil, weathering, and abrasion
• Extends hose service life and reduces maintenance costs
• Ensures safe and efficient fluid transfer in rugged environments
Standards & Certifications:
• EN 856 4SH certified for heavy-duty hydraulic applications
• MSHA-approved for mining and underground operations
• Manufactured according to international hydraulic and safety standards
Specifications:
|
Part No. |
I.D. |
O.D. |
Max.W.P. |
Min.B.P. |
Min.B.R. |
Weight |
||
|
Min |
Max |
|||||||
|
inch |
mm |
mm |
mm |
MPa |
MPa |
mm |
kg/m |
|
|
SL244-10 |
5/8 |
15.9 |
26 |
28 |
45 |
180 |
250 |
1.15 |
|
SL244-12 |
3/4 |
19.1 |
30 |
32 |
42 |
168 |
280 |
1.54 |
|
SL244-16 |
1 |
25.4 |
37 |
39 |
38 |
152 |
340 |
2.02 |
|
SL244-20 |
1-1/4 |
31.8 |
43.8 |
46.2 |
32.5 |
130 |
460 |
2.48 |
|
SL244-24 |
1-1/2 |
38.1 |
51.3 |
53.7 |
29 |
116 |
560 |
3.18 |
|
SL244-32 |
2 |
50.8 |
65.3 |
67.7 |
25 |
100 |
700 |
4.46 |
Frequently Asked Questions (FAQ)
Q: Why is MSHA certification mandatory for EN 856-4SP underground mining drill hoses?
A: MSHA certification dictates the outer synthetic rubber cover is chemically formulated for flame resistance. This specific compound self-extinguishes, strictly preventing fire propagation along hydraulic routing during continuous underground tunnel jumbo operations and high-temperature heavy machinery deployments.
Q: What are the maximum working pressure limits for 4-wire EN 856-4SP hydraulic hoses?
A: Maximum working pressures scale inversely with inner diameters. The 5/8-inch (DN16) specification sustains 350 Bar (5075 PSI), while the 2-inch (DN50) configuration operates at 165 Bar (2390 PSI). The four-ply wire spiral reinforcement limits radial expansion during dynamic loading.
Q: Which fluid mediums are compatible with the EN 856-4SP hot oil-resistant inner tube?
A: The extruded black synthetic rubber inner tube maintains strict compatibility with petroleum-based, water-based, and biodegradable hydraulic fluids. This physical matrix prevents internal polymer degradation when transferring high-temperature fluids up to +100°C (+212°F) during heavy-duty pile driving applications.
Pre
Next
Pre
Next
Related Products
Consultation
We will contact you within one working day. Please pay attention to your email.
Senflow Tech Co., Ltd. specializes in high-performance hydraulic and industrial hose systems, delivering globally certified solutions for industries such as construction, energy, mining, and shipbuilding — enabling smarter, safer, and more efficient fluid transfer.
No.903, Sixin Building, Hexi District, Tianjin, China 300220
Copyright © 2025 SENFLOW TECH CO.,LTD Powered by www.300.cn | SEO | Business License | Privacy Policy
