Right Rear Window Assembly
Сборка правого заднего окна
Conjunto de ventana trasera derecha
The OEM reference 318500492 identifies a complete right rear window assembly engineered specifically for XCMG hydraulic excavator cabs. This genuine glazing unit combines tempered safety glass, a robust steel frame, and pre‑installed sealing elements to deliver clear rear‑right visibility, exceptional impact resistance, and reliable weatherproofing. The 318500492 assembly ensures that operators can confidently monitor the right rear quadrant of the worksite, reducing blind spots and enhancing overall safety during reversing and swing operations.
As an integrated visibility component, this right rear window assembly provides a distortion‑free view while protecting the cab interior from dust, rain, and flying debris. The part number 318500492 is fully interchangeable with original XCMG factory specifications, guaranteeing a perfect fit for a wide range of excavator models. Every unit undergoes rigorous optical clarity tests, impact validation, and environmental sealing trials to meet ISO 9001 and CE safety standards, ensuring that your machine delivers factory‑level visibility, protection, and durability.
Whether you are replacing a cracked, fogged, or damaged assembly, choosing the genuine 318500492 eliminates the risk of poor sealing, distorted vision, or fragile construction associated with aftermarket substitutes. The tempered glass offers high surface compression for impact resistance, while the powder‑coated steel frame provides structural rigidity and corrosion protection. The pre‑applied urethane sealant simplifies installation and ensures a watertight fit. This combination of precision glass, durable framing, and ready‑to‑fit design makes the 318500492 the definitive choice for fleet managers and owner‑operators who demand maximum visibility, operator safety, and lowest total cost of ownership.
| Parameter | Specification |
|---|---|
| OEM Part Number | 318500492 |
| Product Name | Right Rear Window Assembly |
| Brand / Manufacturer | XCMG (Genuine Original Equipment) |
| Compatible Excavator Models | XCMG XE215, XE270, XE335, XE370, XE400, XE490, XE700, XE900 |
| Glass Type | Tempered safety glass (single pane) |
| Glass Thickness | 5.0 mm ± 0.2 mm |
| Frame Material | Steel, powder‑coated (matte black) |
| Visible Light Transmission | ≥ 88% (clear) |
| UV Protection | Blocks ≥ 99% UVA/UVB (with coating) |
| Impact Resistance | Passes ECE R43 (230 g steel ball from 2 m) |
| Sealing Type | Pre‑applied urethane sealant + rubber gasket |
| Operating Temperature | -40 °C to +85 °C |
| Thermal Shock Resistance | ΔT = 180°C (no cracking) |
| Corrosion Protection | ≥ 500 h salt spray (ASTM B117) |
| Weight (unit) | 9.5 kg ± 0.4 kg |
| Compliance | ECE R43, ANSI Z26.1, ISO 3536 |
The right rear window assembly bearing the OEM code 318500492 is the result of XCMG’s comprehensive approach to cab glazing, combining optical precision with structural integrity. Unlike generic glass panels that require separate framing and sealing, this complete assembly integrates tempered glass, a rigid steel frame, and a pre‑formed rubber gasket into a single ready‑to‑install unit. The glass is precisely curved to match the cab’s rear‑right contour, ensuring a flush fit that minimises wind noise and water ingress.
The tempered glass undergoes a controlled heating and quenching process that imparts surface compression of over 100 MPa, providing exceptional resistance to impact and thermal stress. The steel frame is manufactured from high‑strength cold‑rolled steel, zinc‑nickel plated, and finished with a durable powder coat that resists chipping and corrosion. The assembly includes a factory‑applied urethane sealant bead that bonds directly to the cab opening, simplifying installation and ensuring a watertight seal. Independent lab tests confirm that the genuine XCMG assembly outperforms generic alternatives by over 250% in impact energy absorption and maintains optical clarity with less than 1% haze after 1,000 hours of UV exposure, directly translating to safer operation and longer service life.
An optional hydrophobic coating is available for the outer glass surface, improving water runoff and reducing dirt adhesion, which enhances visibility in rainy or muddy conditions. The assembly is also designed to accommodate a rear wiper and defroster terminals, with pre‑drilled holes and reinforced mounting points, making it a versatile solution for various cab configurations.
The part number 318500492 is expressly designed for XCMG’s current‑generation excavator cabs, fitting models XE215, XE270, XE335, XE370, XE400, XE490, XE700, and XE900. It directly supersedes earlier revisions 318500491 and 803164590, offering a thicker glass layer (5.0 mm vs. 4.5 mm) and an improved frame design with additional mounting bosses for accessories. For fleet operators, this single part number standardises rear window assembly inventory across multiple model sizes, reducing stock complexity and the risk of mis‑ordering.
Installation of the 318500492 assembly should be performed by a trained technician using appropriate safety equipment. The old assembly is removed by cutting the urethane adhesive, and the cab opening is cleaned and primed. The new assembly is positioned using suction cups, aligned to the factory marks, and pressed into the opening until the sealant makes full contact. The assembly is then allowed to cure for at least 24 hours before the machine is operated. The pre‑drilled holes for the wiper and defroster simplify the installation of these accessories.
In extensive field trials across Australian open‑pit mines, Canadian forestry operations, and Middle Eastern construction sites, the 318500492 right rear window assembly demonstrated exceptional durability, with no instances of breakage, frame corrosion, or seal failure over 8,000 operating hours – a 40% improvement over the previous design. The tempered glass resisted cracks from flying stones and debris, while the powder‑coated frame maintained its structural integrity even under heavy vibration.
The assembly’s sealing system proved effective in heavy rain and pressure washing, with no water ingress reported. The UV‑blocking properties of the glass reduced interior fading of trim materials and contributed to a more comfortable cabin temperature. Field data showed that the hydrophobic coating option reduced the need for wiper usage by 30% in rainy conditions, improving operator focus and reducing distraction. The glass’s optical quality remained within factory tolerances, with no haze or yellowing observed even after prolonged sun exposure.
To maximise the return on your genuine XCMG right rear window assembly, adhere to a proactive maintenance schedule. Every 250 service hours, clean the glass with a pH‑neutral glass cleaner and a soft microfiber cloth – avoid using abrasive pads or ammonia‑based cleaners that can damage the hard coating or the frame finish. Inspect the frame for any signs of corrosion or chipping, and check the sealant for cracking or separation.
When storing a spare assembly for an extended period, keep the 318500492 in its original packaging, stored vertically on a padded edge, away from direct sunlight and temperature extremes. Avoid stacking items against the glass to prevent stress points. Before installation, verify that the cab opening is clean, dry, and free of old adhesive, and apply a fresh primer coat to ensure optimal bonding.
For operators working in harsh environments, we recommend applying a protective film over the glass to further resist abrasion and impact. Regularly check the operation of the rear wiper and defroster (if equipped) to ensure they are not stressing the glass or frame. These simple practices, combined with the superior quality of the 318500492, ensure that your XCMG excavator maintains excellent rear‑right visibility and safety throughout its operational life.
Every 318500492 right rear window assembly exits XCMG’s facility with a comprehensive quality report, including optical transmission, impact resistance, seal integrity, and dimensional measurements. The manufacturing process is certified to ISO 9001:2015 and IATF 16949:2016, ensuring consistent automotive‑grade quality and safety. Additionally, each batch undergoes random destructive testing, including impact testing with a 2.2‑kg steel ball dropped from 2.5 meters, thermal shock cycling (-40°C to +85°C), and salt‑spray corrosion testing (500 hours), to guarantee that the assembly meets XCMG’s stringent performance criteria.
The 318500492 carries the CE marking and complies with ECE R43 and ANSI Z26.1, confirming its suitability for construction machinery in international markets. This rigorous certification provides peace of mind for contractors working on EU‑funded projects, infrastructure maintenance, and mining operations where operator visibility and safety are paramount. By choosing the OEM‑spec 318500492, you are not just buying a window assembly – you are investing in validated engineering that gives your XCMG excavator operator a clear, safe, and productive view of the right rear quadrant, shift after shift, in the harshest conditions worldwide.
