Description
Product Specifications
| Parameter | Details |
|---|---|
| Model NO. | 6305 |
| Material | Bearing Steel |
| Specification | 25×62×17mm |
| Trademark | NTN |
| Origin | Japan |
| HS Code | 8482300000 |
| Production Capacity | 1000000 units/year |
| Lubrication | Grease or Oil |
| Customerized | Customizable |
| Sample | Available |
| Service | OEM ODM |
Application Industries
| Industry | Typical Equipment |
|---|---|
| Marine | Deck machinery, winches, pumps, steering systems |
| Automotive | Transmissions, water pumps, alternators |
| General Machinery | Electric motors, fans, gearboxes, conveyors |
Marine Equipment Failures Start with Compromised Bearings — Get NTN 6305 Rustproof Solutions
Marine maintenance teams know the nightmare: saltwater corrosion turning bearings into seized liabilities within months. Counterfeit deep groove ball bearings often lack proper rustproofing, leading to unexpected equipment downtime during critical operations. When your 25x62x17mm bearing fails, replacing it means costly dry dock stays and missed delivery deadlines.
NTN 6305 Marine Bearing: Rustproof Performance You Can Trace
Our NTN 6305 deep groove ball bearing delivers the rust resistance marine environments demand. As an official NTN distributor, we ensure every 25x62x17mm bearing comes with full traceability documentation, eliminating customs clearance delays. With our WMS real-time inventory system, your marine equipment doesn’t wait—we stock this critical size for immediate dispatch to shipyards and vessel operators worldwide.
Engineered for the Harsh Marine Environment
This NTN 6305 marine bearing thrives where land-based bearings fail. The 25mm bore, 62mm outer diameter, and 17mm width balance load capacity with compact design, ideal for space-constrained marine pumps and winches. Its bearing steel construction, paired with specialized rustproof treatments, withstands salt spray and temperature fluctuations from -20°C to 120°C, ensuring reliable performance in both freshwater and offshore applications.
Technical Details That Prevent Marine Equipment Failures
The 6305 bearing’s 25x62x17mm dimensions aren’t arbitrary—they balance dynamic load capacity with rotational efficiency. Marine gearboxes require precise clearance control, which NTN’s manufacturing tolerances deliver consistently. The grease lubrication option minimizes maintenance intervals, while oil lubrication supports high-speed applications like propulsion system fans. Our three-level quality inspection checks every bearing for dimensional accuracy, ensuring proper fit in marine equipment without excessive play or binding.
Why Genuine NTN Bearings Reduce Total Cost of Ownership
Choosing unauthorized 6305 bearings may save upfront costs, but the hidden expenses add up fast. A single counterfeit bearing failure in a marine winch can cause $15,000+ in downtime and repairs. Our NTN 6305 rustproof bearing, backed by ISO 9001 quality standards, lasts 3x longer in saltwater environments, cutting replacement frequency and labor costs. With complete traceability documents, you avoid customs holds and liability disputes that plague gray-market purchases.
10+ Years of Marine Bearing Expertise at Your Service
We’ve supplied NTN bearings to marine equipment manufacturers in 50+ countries, building a reputation for reliability. Our technical team includes marine engineering specialists who provide free model selection support—ensuring you get the right 25x62x17mm bearing for your specific application, whether it’s a fishing vessel’s hydraulic system or an offshore platform’s crane. As an authorized distributor, we offer OEM customization options, from special lubricants to custom packaging, tailored to marine industry requirements.
Packaging & Shipping
- Seaworthy packaging: Individual cartons with moisture barriers, palletized for secure ocean transport
- Dispatch within 24 hours for in-stock orders
- Global door-to-door logistics via DHL, FedEx, or sea freight options
- Real-time tracking provided from warehouse to delivery
- Flexible order quantities: 1 unit for emergency repairs, bulk pricing for OEM production
Get Your NTN 6305 Bearing Shipped Today
Every day your marine equipment waits for a reliable bearing is a day of lost revenue. Send us your bearing model, application details, and quantity—our team will confirm compatibility and send a formal quote within 24 hours. With our rustproof NTN 6305 bearing, you’re not just buying a component; you’re securing your vessel’s operational reliability.
Frequently Asked Questions
Q: Are these genuine NTN bearings?
A: Yes, we are an official NTN authorized distributor. Every 6305 bearing comes with brand authorization certificates and full traceability documentation to verify authenticity.
Q: How do I confirm this 25x62x17mm bearing fits my marine equipment?
A: Provide your equipment model or operating parameters (load, speed, temperature), and our technical team will cross-verify compatibility with NTN’s official specifications.
Q: What is the warranty policy?
A: All NTN bearings are covered by the manufacturer’s warranty against manufacturing defects. We provide full after-sales support for warranty claims and replacement.
Q: What is the minimum order quantity?
A: We accept orders for 1 unit to support emergency repairs, with volume discounts available for bulk purchases.
Q: How long does shipping take to marine ports?
A: In-stock bearings ship within 24 hours. Express delivery takes 3-5 days; sea freight options are available for cost-sensitive bulk orders.
Q: How can I verify the rustproof treatment?
A: NTN’s rustproof process meets ISO 10289 standards. We provide material certification and can arrange third-party testing upon request for critical applications.
Ready to order or need a quote?
Send your bearing designation, application details, and quantity — we’ll respond within 24 hours.







