The 381600461 Metal Tube Assembly is a genuine XCMG hydraulic line component engineered specifically for GR series motor graders. This precision-formed tube delivers high-pressure hydraulic fluid to critical systems such as blade lift cylinders, circle drive motors, articulation joints, and steering actuators. Manufactured from seamless cold-drawn steel, the 381600461 tube assembly guarantees leak-free operation under extreme pressure and vibration.
Designed as a direct OEM replacement, this metal tube matches original XCMG specifications for GR135, GR165, GR180, GR215, GR260, GR300, and GR350 motor graders. The 381600461 assembly includes pre-formed bends, flared ends, and protective coating to resist corrosion from road salts, moisture, and hydraulic fluids. Every tube undergoes 100% pressure testing to 35 MPa (5,075 psi) before leaving the factory.
A damaged or leaking hydraulic tube can cause loss of machine control, oil spills, and costly downtime. Replacing a worn or cracked line with the genuine 381600461 Metal Tube Assembly restores full hydraulic integrity and extends component life. The assembly is ready to install with no cutting or bending required, saving valuable repair time in the field or workshop.
| Parameter | Specification |
|---|---|
| OEM Number | 381600461 |
| Brand | XCMG (Genuine Original Equipment) |
| Product Type | Metal Tube Assembly / Hydraulic Line |
| Material | Seamless Cold-Drawn Steel (ST 37.4 / E235+N) |
| Outer Diameter | 12 mm ±0.1 mm |
| Wall Thickness | 1.5 mm (2.0 mm on high-pressure sections) |
| Overall Length | 785 mm (end-to-end along centerline) |
| End Fittings | Flared 45° / M18×1.5 female swivel nut |
| Surface Finish | Zinc-nickel plating (500h salt spray) + clear topcoat |
| Max Working Pressure | 28 MPa (4,060 psi) / Burst pressure >105 MPa |
| Operating Temp | -40°C to +130°C (-40°F to +266°F) |
| Bend Radius (Min.) | R60 mm (CNC mandrel bent, no kinking) |
| Compatible Fluids | Mineral oil, synthetic hydraulic fluids, biodegradable oils |
| Compatible Models | XCMG GR135, GR165, GR180, GR215, GR260, GR300, GR350 motor graders |
| OEM Cross Reference | 381600450, 381600478, 381600489 |
| Certification | ISO 14001, ISO 9001:2015, CE marked |
The 381600461 Metal Tube Assembly is responsible for transmitting pressurized hydraulic oil between the main control valve and the blade lift cylinder on GR graders. Without a sound tube, the blade cannot maintain precise grade elevation, compromising road leveling and slope work.
This assembly directly replaces rusted, cracked, or bent original tubes. Common failure points include corrosion near mounting clips and fatigue cracks at flare connections. The 381600461 restores flow and eliminates external weeping oil leaks.
Installation is straightforward – unbolt the damaged tube, clean the port faces, and mount the new 381600461 using new copper washers. Always torque the swivel nuts to 35 Nm to avoid overtightening. After installation, run the hydraulic system and check for leaks under full pressure.
Proactive replacement of aged hydraulic tubes prevents sudden rupture. Vibration and pressure cycling eventually work-harden steel lines. Replacing every 8,000 hours or at first sign of pitting ensures maximum uptime for your grader fleet.
Each 381600461 metal tube begins as seamless steel tubing from certified European mills. The material conforms to DIN 2391 / EN 10305-1, ensuring consistent wall thickness and tensile strength of at least 480 MPa.
CNC mandrel bending machines form the complex 3D geometry of the 381600461 with a positional tolerance of ±0.5 mm. This ensures perfect alignment with mounting brackets and neighboring components, eliminating installation stress.
End flares are produced by rotary swaging for a smooth, crack-free sealing surface. The flare angle is verified with optical comparators. After forming, every 381600461 tube is hydrostatically tested to 52.5 MPa for 30 seconds – no pressure drop or leakage is accepted.
The zinc-nickel plating provides cathodic protection and withstands 500 hours of neutral salt spray (ASTM B117). This coating is essential for graders working in coastal regions or areas with heavy road de-icing salts.
Before removing the old hydraulic tube, relieve all hydraulic pressure from the grader’s system. Lower the blade to the ground, cycle control levers with engine off, and loosen the filler cap to release tank pressure.
Disconnect the tube ends using two open-end wrenches to avoid twisting the mating fittings. Capture any residual oil in a container. Compare the old tube with the new 381600461 – the bend geometry should match exactly.
Install the 381600461 assembly, starting with the flanged end that seats into the cylinder port. Hand-tighten the swivel nut, then torque to 35 Nm (26 lb-ft). Secure all mounting clamps to prevent chafing but allow thermal expansion.
After installation, start the engine and cycle the hydraulic functions through full range while inspecting the tube and connections. If any weeping occurs, re-torque the nut slightly. Wipe area dry and recheck after 10 minutes of operation.
Always discard old copper sealing washers and install new ones. The 381600461 tube requires no additional sealants or thread tape – the metal-to-metal flare provides the hydraulic seal.
Aftermarket hydraulic tubes often use welded seam pipe that splits under pressure. The genuine 381600461 uses seamless tubing rated for dynamic impulse loads. Aftermarket tubes may also have inaccurate bends that strain fittings and cause premature seal failure.
Genuine XCMG 381600461 assemblies are traceable to batch-level material certificates and pressure test records. The zinc-nickel plating meets XCMG’s heavy-equipment standard, whereas generic tubes use cheap electroplating that rusts in months.
Using non-genuine tubes voids warranty claims on hydraulic pumps and cylinders. The 381600461 is backed by XCMG’s 12-month defect warranty and includes technical support for proper installation. Invest in genuine parts to protect your grader’s hydraulic system.
Inspect the 381600461 tube assembly every 500 operating hours. Look for flaking zinc coating, red rust, chafing marks from contact with chassis, or oil dampness around the flare joints. Any of these signs indicate imminent failure.
A pin-hole leak in a high-pressure hydraulic line can spray oil onto hot engine components, creating a fire hazard. The 381600461 should be replaced immediately if any pitting or deep scratches penetrate the plating.
Keep a spare 381600461 in your fleet service truck. Hydraulic tube failure stops the grader completely – having a replacement on hand reduces downtime from days to one hour. Preventive replacement every 6,000 hours is recommended for rental fleets.
When replacing hydraulic filters or oil, take extra time to inspect all rigid tubes. The 381600461 is often located near the right-hand blade lift cylinder, exposed to debris thrown by the front tire. Install a protective sleeve if operating in rocky conditions.
The 381600461 Metal Tube Assembly is stocked in XCMG regional hubs: Houston (USA), Rotterdam (Netherlands), Dubai (UAE), and Shanghai (China). Standard air freight delivers within 3-7 business days worldwide. Sea freight options available for bulk orders of 20+ units.
Each 381600461 tube is individually packed in heavy-duty cardboard with foam end protectors to prevent bending or plating damage during transit. Emergency courier service (1-2 days) is available for critical breakdowns.
For large mining and construction fleets, consignment stock agreements ensure immediate availability. Volume discounts apply for orders of 5 or more 381600461 assemblies. Don’t let a corroded hydraulic line strand your grader – order genuine XCMG replacements today.
The 381600461 Metal Tube Assembly is a mission-critical part for XCMG GR motor graders. Whether you are performing scheduled maintenance or an emergency repair, this OEM tube guarantees perfect fit, full pressure rating, and long service life. Always choose genuine XCMG parts to keep your grader productive and safe.
Upgrade your grader reliability with the 381600461 genuine metal tube – engineered for the toughest grading environments. Order now and experience the difference that precision manufacturing and corrosion-resistant coatings make.
