The 380500427 Hose Clamp is a genuine XCMG spring‑band clamp engineered for securing hydraulic hoses, fuel lines, coolant pipes, and air intake ducts on motor graders and heavy construction equipment. This precision‑formed clamp provides constant tension over a wide range of temperatures, preventing hose loosening, chafing, and fluid leaks. Manufactured from high‑grade stainless spring steel with a corrosion‑resistant zinc‑nickel coating, the 380500427 clamp is designed for long service life in dusty, wet, and vibration‑intensive grading environments. It directly replaces worn, stretched, or broken OEM clamps on XCMG GR135, GR165, GR180, GR215, GR260, GR300, and GR350 motor graders.
The 380500427 features a smooth inner edge and rolled band construction, eliminating sharp burrs that could cut into rubber hoses. Its constant‑tension design automatically adjusts to hose compression set and thermal expansion, maintaining secure grip from -40°C to +150°C. This clamp is typically used on suction hoses between hydraulic tank and pump, return lines, radiator hoses, and fuel supply connections. A missing or weakened clamp can allow hose slippage, leading to oil spills, engine overheating, or hydraulic system contamination. Replacing degraded clamps with genuine XCMG 380500427 restores full holding force and prevents catastrophic fluid loss.
Unlike worm‑drive clamps that can crush hoses or loosen under vibration, the 380500427 constant‑tension clamp maintains uniform radial force throughout its service life. Its overlapping band design provides 360° sealing without pressure points. XCMG engineers validated this clamp for over 1 million vibration cycles, making it the preferred choice for critical connections on motor graders. Order the genuine 380500427 today and secure every fluid line on your grader.
| Parameter | Specification |
|---|---|
| OEM Number | 380500427 |
| Brand | XCMG (Genuine Original Equipment) |
| Product Type | Spring‑Loaded Constant Tension Hose Clamp (Overlapping Band) |
| Clamp Diameter Range (Open) | 25 – 35 mm (fits ¾″ to 1¼″ hose OD) |
| Band Width | 12 mm ±0.3 mm |
| Material | Stainless spring steel (AISI 301 / 1.4310), full hard |
| Surface Finish | Zinc‑nickel alloy + clear trivalent passivation (720h salt spray) |
| Thickness | 0.8 mm (±0.05 mm) |
| Clamping Force (at nominal diameter) | 180 N ± 15 N (constant tension) |
| Operating Temperature Range | -40°C to +150°C (-40°F to +302°F) |
| Vibration Resistance | 1,000,000 cycles @ 20g (no loosening) |
| Corrosion Resistance | 720+ hours salt spray (ASTM B117) without red rust |
| Standards | ISO 1234, DIN 3021, SAE J1508 |
| Compatible Fluids / Hoses | Hydraulic oil, diesel, coolant, air intake, grease lines |
| Tool Required for Installation | Pliers with 90° jaw (XCMG special tool or universal hose clamp pliers) |
| Compatible Models | XCMG GR135, GR165, GR180, GR215, GR260, GR300, GR350 motor graders |
| Superseded Part Numbers | 380500388, 380500402, 380500415 |
The XCMG 380500427 Hose Clamp may seem small, but it plays a decisive role in preventing fluid leaks and maintaining reliable operation of hydraulic, cooling, and fuel systems on motor graders. A loose or corroded clamp allows hoses to slip off fittings under pressure, causing sudden oil loss, engine overheating, or brake failure. The 380500427’s constant‑tension spring design compensates for hose aging and temperature cycles, keeping a tight seal even after thousands of thermal shocks.
Typical applications on XCMG GR graders include the hydraulic tank suction hose (prevents cavitation), radiator upper and lower hoses (eliminates coolant loss), fuel return lines, and turbocharger air ducts. The smooth rolled band edge protects rubber hoses from cutting, while the overlap prevents dirt ingress. When a clamp loses its spring force due to metal fatigue or corrosion, it can no longer provide adequate clamping – the result is often a roadside breakdown. Replacing old clamps with genuine 380500427 restores full holding force and prevents expensive fluid loss.
Unlike worm gear clamps that require periodic retorquing and often dig into hoses, the 380500427 self‑adjusts and distributes pressure evenly. XCMG chose this design for high‑vibration areas because it maintains consistent force regardless of hose compression set. Investing in genuine XCMG clamps drastically reduces unplanned downtime related to loose connections.
Each 380500427 hose clamp is manufactured from premium AISI 301 stainless spring steel, precision slit to width and heat‑treated to achieve tensile strength of 1500–1800 MPa. The band is rolled into an overlapping helix using CNC coil winders, ensuring consistent diameter and gap. After forming, every clamp undergoes stress relief annealing to eliminate residual stresses that could cause cracking during service.
The surface is then cleaned, zinc‑nickel plated, and sealed with a trivalent chromium passivation layer. This provides over 720 hours of salt spray resistance per ASTM B117 – essential for graders exposed to road salt, mud, and chemical de‑icers. XCMG’s quality assurance includes 100% visual inspection under magnification for burrs and edge defects, plus sample testing for clamping force using a digital force gauge at nominal and extreme diameters.
Each batch also undergoes a 72‑hour thermal cycling test (-40°C to +150°C, 10 cycles) to verify tension retention. Counterfeit clamps may use low‑carbon steel with thin zinc plating that rusts within months, leading to clamp failure. Only genuine XCMG 380500427 provides the certified spring steel and corrosion protection that meet the grader’s design life of 10,000+ hours.
Replacing a worn or broken hose clamp is straightforward. First, relieve system pressure (hydraulic, fuel, or coolant). Using hose clamp pliers with 90° angled jaws, compress the two ears of the old clamp to release tension, then slide it off the hose. Clean the hose end and fitting nipple; remove any old residue. Inspect the hose for cracks or swelling – replace the hose if damaged.
Position the new 380500427 clamp over the hose, then slide the hose fully onto the fitting until it seats against the stop. Release the clamp ears so the spring band contracts evenly around the hose. Ensure the clamp is positioned 3‑5 mm from the hose end, not overhanging. Do not overtighten or use pliers to further compress after release – the spring tension is preset.
After installation, run the engine and inspect for leaks under normal operating pressure. If a small seepage appears, the hose may be incompatible or the clamp diameter might be incorrect (check specification). XCMG recommends replacing all hose clamps every 3,000 hours or when signs of rust, loss of tension, or cracking appear. Keep a stock of 380500427 clamps for routine maintenance to avoid emergency downtime.
Aftermarket hose clamps often use low‑grade carbon steel that rusts inside six months, losing spring force and flaking rust into the coolant or hydraulic system – a major cause of premature pump wear. Many generic clamps have sharp stamped edges that cut into hose rubber, creating leak paths. The genuine 380500427 features deburred, rolled edges and a smooth inner surface that protects hoses.
Counterfeit clamps may have inconsistent band width and poor heat treatment, leading to permanent deformation after a few thermal cycles. XCMG’s 380500427 is engineered to maintain 90% of initial clamping force after 1,000 thermal cycles. Additionally, aftermarket clamps often fail vibration testing in less than 200,000 cycles, while the genuine unit passes 1 million cycles. Protect your grader’s reliability with OEM XCMG parts.
XCMG provides a 12‑month warranty against manufacturing defects on all 380500427 clamps. Each clamp is laser‑marked with the XCMG logo and part number for traceability. Using genuine clamps also maintains your equipment’s resale value, as buyers recognize OEM maintenance. Don’t let a $2 clamp cause a $5,000 engine or hydraulic repair – insist on genuine XCMG.
Common signs that the 380500427 hose clamp requires replacement: visible rust or flaking coating, a gap between the band and the hose (reduced tension), cracking near the ear slots, or discoloration from overheating. Also, if the hose can be rotated by hand on the fitting, the clamp has lost its grip. During oil changes or coolant flushes, always inspect every clamp in the circuit.
Preventive replacement is recommended at 3,000‑hour intervals or every two years in harsh environments (salt, high humidity). The cost of a genuine clamp is negligible compared to the cost of cleaning up an oil spill, replacing contaminated fluid, or repairing a seized engine due to coolant loss. During routine service, use a flashlight to inspect hard‑to‑see clamps behind the engine and under the cab.
Keep a small stock of 380500427 clamps in your service truck. When installing, never reuse an old clamp that has been stretched – once a constant‑tension clamp is removed, its spring memory is partially lost. Always replace with new genuine XCMG clamps. A well‑clamped hose system keeps your grader running clean and efficient.
The 380500427 Hose Clamp is stocked in XCMG regional hubs: North America (Houston), Europe (Rotterdam), Middle East (Dubai), and Asia (Shanghai). Standard air freight delivers within 2‑5 business days worldwide; expedited courier (1‑2 days) is available for critical repairs. Bulk orders (100+ clamps) can be shipped via sea freight with significant volume discounts.
Each clamp is individually sealed in anti‑corrosion packaging or supplied in bulk bags for fleet maintenance. XCMG offers consignment stock programs for large fleets, ensuring immediate availability without upfront payment. Contact your local XCMG parts dealer to set up scheduled automatic replenishment for 380500427 and other commonly worn clamps.
Don’t let a failed hose clamp compromise your motor grader’s uptime. The genuine XCMG 380500427 delivers reliable, constant‑tension holding power, corrosion resistance, and long service life. Order today and secure every fluid connection on your GR series grader. Whether you need one clamp or a full maintenance kit, XCMG’s global logistics network ensures you get the right part fast. Keep your grader leak‑free and productive – choose genuine XCMG 380500427 hose clamps.
Upgrade your motor grader’s reliability with XCMG genuine hose clamps. Precision‑engineered for strength, uniform grip, and extreme durability – order now and experience the quality that keeps XCMG graders operating efficiently in the toughest conditions. For any hose connection, trust the 380500427 to provide a perfect seal every time.
