SAE 100R1 single-layer steel wire braided hydraulic hose for excavators
Excavators are a heavy-duty battlefield for hydraulic systems, and the SAE 100R1/EN 853 1SN single-wire braided hydraulic hose is engineered precisely for this demand. With a 21MPa (3,000psi) working pressure and bore sizes ranging from 3/8" to 3/4", it serves every main hydraulic circuit in an excavator — boom, arm, bucket, swing, and travel — making it the core fluid delivery component of any digging machine.
The hose features an NBR nitrile inner tube resistant to hydraulic oil swelling, a single layer of high-tensile copper-plated steel wire braid for stable pressure containment, and a CR neoprene outer cover that resists abrasion, oil, and UV aging. Its burst pressure reaches 84MPa with a 4:1 safety factor, operating reliably from -40°C to +100°C — fully capable of handling the harshest jobsite conditions.
| Size (I.D.) | O.D. | Working Pressure | Burst Pressure | Min Bend Radius | Weight |
|---|---|---|---|---|---|
| 3/8" (9.5mm) | 16.7mm | 21MPa (3000psi) | 84MPa (12000psi) | 190mm | 0.42kg/m |
| 1/2" (12.7mm) | 19.0mm | 21MPa (3000psi) | 84MPa (12000psi) | 220mm | 0.55kg/m |
| 5/8" (15.9mm) | 22.2mm | 21MPa (3000psi) | 84MPa (12000psi) | 260mm | 0.78kg/m |
| 3/4" (19.0mm) | 27.0mm | 21MPa (3000psi) | 84MPa (12000psi) | 320mm | 1.10kg/m |
Three key advantages make it the go-to hose for excavators: first, excellent pulse resistance — it withstands the repeated pressure surges from boom lifting without fatigue cracking; second, superior flexibility with a tight minimum bend radius, allowing easy routing through the excavator's compact undercarriage; third, universal standard compliance (GB/T 3683, SAE 100R1AT, DIN EN 853 1SN), ensuring cross-brand compatibility and hassle-free replacement.
In a typical excavator hydraulic layout, boom and arm cylinders use 1/2" and 5/8" hoses, the swing motor uses 3/8" or 1/2", and the travel motor uses 3/4". Recommended fittings are 45° flare or JIC 37° cone-seat types with UNF fine threads, providing leak-free connections that can be quickly disassembled for field maintenance.
When specifying, confirm: bore size matches the cylinder ports, pressure rating meets or exceeds system maximum, media is mineral-based hydraulic oil (not castor-oil based), and operating temperature stays within -40°C to +100°C. The SAE 100R1 excavator hose — built to endure every dig and every dust storm — is the true "steel bloodstream" of any hydraulic excavator.
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