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Help CenterWaterproof Rubber Bearing IP68, 40mm ID x 70mm OD x 18mm Width, for Marine Applications
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As a leading manufacturer from Hengshui Ruibin New Materials LLC, we are proud to present our Waterproof Rubber Bearing IP68 with dimensions 40mm ID x 70mm OD x 18mm Width, specifically engineered for demanding marine applications. Our bearing combines superior waterproof performance with robust load-bearing capacity, ensuring reliable operation even in submerged or splash-prone environments. With over 5 years of manufacturing expertise and a dedicated team of 101-200 employees, we deliver products that meet the exacting standards of global shipbuilders and offshore equipment manufacturers.
This bearing is designed to provide long-lasting service in harsh marine conditions, including saltwater exposure, high humidity, and mechanical stress. The IP68 rating guarantees protection against continuous immersion in water up to 1.5 meters depth for 30 minutes, making it ideal for rudder systems, propeller shafts, and underwater machinery. Below are the key features and technical specifications:
- Waterproof Construction: Triple-lip seal design with IP68 certification ensures zero water ingress.
- Corrosion Resistance: Rubber compound blended with anti-ozone and anti-UV additives for extended service life.
- High Load Capacity: Reinforced with steel or stainless steel inner ring to handle radial and axial loads.
- Low Friction: Self-lubricating rubber surface reduces wear and maintenance requirements.
- Shock Absorption: Elastic rubber layer dampens vibration and noise, enhancing operational comfort.
- Temperature Range: -30°C to +80°C continuous operation, suitable for global marine environments.
- Customizable Hardness: Available in Shore A 60, 70, 80, or 90 to match specific application needs.
- Easy Installation: Standard dimensions allow direct replacement of existing bearings without modification.
| Parameter | Value |
| Inner Diameter (ID) | 40 mm (1.575 inches) |
| Outer Diameter (OD) | 70 mm (2.756 inches) |
| Width (W) | 18 mm (0.709 inches) |
| Material | NBR / EPDM / Silicone rubber (optional) |
| Protection Class | IP68 (waterproof) |
| Static Load Capacity | Up to 5000 N (depending on durometer) |
| Operating Temperature | -30°C to +80°C |
| Hardness (Shore A) | 60-90 (customizable upon request) |
Our Waterproof Rubber Bearing IP68 offers significant advantages for marine applications:
- Reduced Downtime: The waterproof seal prevents corrosion and contamination, minimizing maintenance intervals.
- Enhanced Safety: Reliable operation in submerged conditions reduces risk of mechanical failure in critical systems.
- Cost Efficiency: Longer service life and lower replacement frequency reduce total ownership cost.
- Versatility: Suitable for both fresh water and salt water environments, including offshore platforms, marine vessels, and aquaculture equipment.
- Eco-Friendly: Lead-free rubber compound meets environmental regulations for marine use.
Hengshui Ruibin New Materials LLC, established in 2019, operates a 1,000-3,000 square meter modern factory with 101-200 skilled employees. Our annual export value ranges from US$2.5 Million to US$5 Million, serving markets across North America, South America, Europe, Asia, Africa, and Oceania. We ship from the ports of Tianjin and Qingdao, ensuring timely delivery worldwide. Our team strictly follows quality control procedures to ensure each bearing meets the highest standards. With a strong focus on customer satisfaction, we offer customization options for dimensions, hardness, and material compounds to meet specific project requirements.
We invite you to experience the reliability of our waterproof rubber bearings. Contact us today for a quote or technical consultation. Our experienced engineers are ready to assist you with your marine bearing needs.
Frequently Asked Questions (FAQ)
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Q: What does IP68 mean for this bearing?
A: IP68 means the bearing is fully protected against dust ingress and can withstand continuous immersion in water up to 1.5 meters depth for 30 minutes without damage. -
Q: Can this bearing be used in salt water?
A: Yes, the rubber compound is formulated with anti-corrosion and anti-ozone additives to resist saltwater degradation. We recommend specifying the material for marine use when ordering. -
Q: Is the bearing pre-lubricated?
A: The bearing has a self-lubricating rubber surface, but additional grease can be applied if required. For optimal performance, we provide a standard grease option. -
Q: What is the typical lifespan of this bearing?
A: Lifespan depends on operating conditions, but with proper installation and maintenance, it can last 3-5 years or more in moderate marine environments. -
Q: Can I customize the dimensions?
A: Yes, we offer custom sizes, hardness, and material options. Please provide your specifications for a quotation. -
Q: What is the maximum temperature it can withstand?
A: The continuous operating temperature range is -30°C to +80°C. For higher temperatures, we can suggest alternative materials. -
Q: Do you provide samples for testing?
A: Yes, we can provide samples. Please contact our sales team to discuss sample cost and lead time. -
Q: How do I install the bearing?
A: The bearing is designed for standard press-fit installation. Ensure the housing bore is clean and lubricated. Detailed installation instructions are available upon request.
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