The 803199331 XCMG ferrule φ50 (also known as hydraulic hose crimp ferrule 50mm) is a genuine OEM precision crimping component manufactured by XCMG for motor graders and heavy construction equipment. This 50mm ferrule is a critical element in hydraulic hose assemblies, providing a secure, leak‑proof connection between the hose and the fitting under extreme pressures. Constructed from high‑grade carbon steel with a corrosion‑resistant zinc‑plated finish, the 803199331 ferrule is engineered to withstand operating pressures up to 16 MPa (160 bar / 2,320 psi) in the load‑sensing hydraulic systems of XCMG GR series motor graders.
The XCMG ferrule φ50 is designed to be permanently crimped onto the outer layer of a hydraulic hose using a specialized crimping machine. When correctly installed, it compresses the hose against the fitting’s barbed insert, creating a metal‑to‑rubber seal that remains intact even under cyclic pressure surges and severe vibration. This direct replacement component is essential for rebuilding hydraulic hoses, repairing damaged assemblies, or maintaining the hydraulic systems of XCMG GR135, GR165, GR180, GR215, GR260, GR300, GR350 motor graders and other XCMG heavy machinery.
Each hydraulic hose crimp ferrule 50mm is precision machined to exact dimensional tolerances, with a cleanly formed inner chamfer and a smooth, burr‑free surface. The ferrule plays a vital role in maintaining system integrity, preventing fluid leaks, and ensuring consistent hydraulic performance across all implement functions. Proper crimping and regular inspection of the 803199331 ferrule help maximize machine uptime and reduce costly downtime.
| Parameter | Specification |
|---|---|
| OEM Number | 803199331 |
| Brand | XCMG (Genuine Original Equipment) |
| Product Type | Hydraulic Hose Ferrule / Crimp Collar |
| Nominal Diameter (φ) | 50 mm |
| Material | High‑strength carbon steel (C45 / 1045 grade), heat treated |
| Surface Finish | Zinc plating + yellow chromate (500h salt spray resistance) |
| Maximum Operating Pressure | 16 MPa (160 bar / 2,320 psi) — 18 MPa (180 bar / 2,610 psi) |
| Proof Pressure | 24 MPa (240 bar / 3,480 psi) |
| Burst Pressure | > 48 MPa (480 bar) |
| Wall Thickness | 3.0 mm (±0.1 mm) |
| Overall Length | 35 mm (±0.3 mm) |
| Inner Chamfer | 1.0 mm × 45° (both ends, for hose insertion) |
| Hardness (Rockwell) | HRC 20‑25 (optimized for crimping without cracking) |
| Tensile Strength | > 600 MPa (87,000 psi) |
| Crimp Force Requirement | 150 – 200 kN (15 – 20 tons) for proper compression |
| Operating Temperature Range | -40°C to +120°C |
| Corrosion Resistance | 500+ hours salt spray (ASTM B117) without red rust |
| Compatible Hose Outer Diameter | 48 – 50 mm (depending on hose type) |
| Compatible Models | XCMG GR135, GR165, GR180, GR215, GR260, GR300, GR350 motor graders; also XCMG loaders, excavators, and bulldozers |
| Superseded Part Numbers | 803199301, 803199312, 803199328 |
The XCMG 803199331 Ferrule φ50 (hydraulic hose crimp ferrule 50mm) is a small but critical component in the hydraulic hose assemblies that power motor grader functions. When a hydraulic hose is assembled, the ferrule is slipped over the outer rubber layer, the fitting insert is placed inside the hose, and the assembly is compressed in a hydraulic crimping machine. The ferrule’s deformation applies a precise radial force, compressing the hose against the fitting’s barbed insert to create a permanent, leak‑proof seal.
In the demanding environment of motor grader operation, where hydraulic systems are subjected to cyclic pressure spikes from sudden valve actuations and cylinder stalls, a properly crimped ferrule is essential. The XCMG GR series graders operate with working hydraulic pressures of 16 MPa (2,320 psi) to 18 MPa (2,610 psi), and the 803199331 ferrule is rated to a proof pressure of 24 MPa (3,480 psi), providing a significant safety margin.
The φ50 designation refers to the nominal diameter of the XCMG ferrule φ50, which is designed to accommodate large‑bore hydraulic hoses typically used in blade lift circuits, circle rotation systems, and steering hydraulics. These high‑flow circuits require robust connections that can withstand both the internal pressure and the mechanical stresses of constant machine articulation. The 803199331 ferrule ensures that the hose remains securely attached to the fitting, preventing blow‑offs that could cause sudden loss of function or dangerous oil spray.
Each 803199331 ferrule is produced from high‑quality carbon steel bar stock, then CNC machined to achieve precise inner and outer diameters. The inner chamfer is carefully formed to prevent damage to the hose outer layer during insertion. The ferrule is then heat‑treated to achieve a hardness of HRC 20‑25, which provides sufficient strength for crimping without becoming brittle and cracking under the compressive forces of the crimping machine.
After machining and heat treatment, the ferrule undergoes a multi‑stage surface finishing process. It is first cleaned to remove any oils or residues, then zinc‑plated to provide a base layer of corrosion protection. A yellow chromate conversion coating is then applied, which enhances the zinc’s protective properties and gives the ferrule its characteristic gold appearance. This finish provides over 500 hours of salt spray resistance per ASTM B117, ensuring the ferrule remains corrosion‑free even in harsh, wet, or salt‑laden environments such as coastal road construction or winter snow removal operations.
XCMG tests every batch of ferrules to 150% of rated working pressure using a hydrostatic test stand with a complete crimped hose assembly. Any ferrule that shows signs of leakage, cracking, or deformation is rejected. Additionally, dimensional gauges are used to verify that every ferrule meets the required GO/NO‑GO standards, guaranteeing trouble‑free crimping and a perfect fit with XCMG‑specified hose and fitting components.
Proper crimping of the 803199331 ferrule is essential for achieving a leak‑free seal. Use a hydraulic crimping machine that is capable of delivering at least 150‑200 kN (15‑20 tons) of force. Select the correct crimping die set that matches the ferrule’s outer diameter and the fitting’s configuration. The die closing diameter must be precisely controlled; refer to the XCMG service manual or the hose manufacturer’s crimping specifications for the exact value.
Before crimping, insert the fitting into the hose until it bottoms out, then slide the ferrule over the hose until it seats against the fitting’s flange. Position the assembly in the crimping machine, align the dies, and activate the crimp cycle. After crimping, use a caliper to measure the crimped outer diameter of the ferrule. Compare this measurement to the specification provided by the fitting manufacturer. If the diameter is outside the specified tolerance (±0.2 mm), adjust the die closing setting and re‑crimp on a test piece.
After the hose assembly is complete, pressure‑test it to 150% of the system’s maximum working pressure (typically 24 MPa / 3,480 psi) using a hydrostatic test stand. Hold the pressure for at least one minute and inspect for any signs of leakage at the ferrule‑hose interface. If leakage is observed, the crimp was insufficient, or the ferrule may be damaged. Replace the ferrule and repeat the process. Never reuse a ferrule that has been crimped and then removed, as the metal will have work‑hardened and may crack upon recrimping.
Aftermarket ferrules often use lower‑grade steel that can crack during crimping or develop corrosion within months. The genuine XCMG ferrule φ50 is manufactured from heat‑treated carbon steel and finished with a high‑durability zinc‑chromate coating, providing long‑term reliability in demanding environments. Aftermarket ferrules may also have inconsistent inner diameters, leading to improper compression and potential hose blow‑offs.
Counterfeit ferrules often omit the critical heat treatment step, resulting in a soft ferrule that may not maintain its compression force under cyclic pressure, or a brittle ferrule that cracks during crimping. The 803199331 is through‑hardened to achieve the optimal balance of strength and ductility. Additionally, genuine XCMG ferrules are batch‑tested for pressure integrity, whereas counterfeit products rarely undergo any quality control. The inner chamfer in genuine ferrules is precisely formed to prevent damage to the hose outer layer, reducing the risk of stress concentrations that could lead to premature hose failure.
XCMG provides a 12‑month warranty against manufacturing defects. Each ferrule is stamped with the XCMG logo or comes in branded packaging. This supersedes older numbers 803199301 and 803199312, with improved corrosion resistance and more consistent inner diameter tolerances. Using genuine XCMG ferrules ensures compatibility, reliability, and the protection of your valuable equipment.
Common indicators that a hydraulic hose ferrule needs replacement include visible rust or corrosion on the ferrule surface, cracking of the ferrule material, evidence of leakage at the crimped interface (wetness or oil drips), and physical deformation of the ferrule (out‑of‑round shape or bulging). Also, if the hose assembly shows signs of the fitting pulling out of the hose, the ferrule may have lost its compression force due to material fatigue.
Preventive inspection of hydraulic hose assemblies should be performed every 500 operating hours or during routine maintenance intervals. Look for signs of rust, leakage, or physical damage to the ferrule. Run a gloved hand along the ferrule to feel for any sharp edges or cracks. If any damage is found, replace the entire hose assembly, including a new 803199331 ferrule, as ferrules cannot be reliably recrimped once they have been removed.
When rebuilding hydraulic hoses, always use a new ferrule for each assembly. Never reuse a ferrule that has been crimped, as the metal will have been work‑hardened and may crack upon recrimping. Keep a stock of 803199331 ferrules in your parts inventory for rapid field repairs. The cost of a genuine ferrule is negligible compared to the cost of a hydraulic system failure, environmental cleanup from a major oil leak, or the downtime caused by a loss of pressure.
The 803199331 Ferrule φ50 is stocked in XCMG regional warehouses in North America (Houston), Europe (Rotterdam), Middle East (Dubai), and Asia (Shanghai). Standard air freight delivers within 3‑7 business days worldwide. Expedited shipping (1‑2 days) is available for urgent repairs.
Bulk orders (20+ ferrules) receive volume discounts and can be shipped via sea freight. Each ferrule is individually wrapped in anti‑corrosion paper or supplied in sealed bags. For large fleets, consignment stock programs are available to ensure immediate availability and reduced downtime.
Don’t let a poorly crimped or corroded ferrule compromise your grader’s hydraulic performance or safety. Order the genuine XCMG 803199331 Ferrule φ50 (hydraulic hose crimp ferrule 50mm) today and build reliable, leak‑free hose assemblies that keep your motor grader productive.
The 803199331 XCMG ferrule φ50 is a small but vital component in your motor grader’s hydraulic system. A single poorly crimped ferrule can cause a hose to blow off under pressure, leading to loss of implement control, environmental contamination, and potential injury to nearby personnel. Keep spare ferrules in your service truck for every hose repair, and always replace with genuine XCMG parts.
Upgrade your motor grader’s hydraulic reliability with the XCMG genuine ferrule. Engineered for strength, precision, and corrosion resistance – order now and experience the quality that keeps your grader productive and leak‑free.
