-- SKF Authorized Engineering Partner
Koyo 6305 2RS Deep Groove Ball Bearing 25x62x17mm
Ensure smooth, reliable performance in your machinery with the Koyo 6305 2RS Bearing, designed to minimize friction and extend equipment lifespan. This deep groove ball bearing features a 25x62x17mm dimension, crafted from high-quality Bearing Steel for durability in radial load applications.
- Sealed design (2RS) keeps contaminants out, reducing maintenance needs and ensuring consistent operation
- Precision rating options (P0-P2) allow customization for specific performance requirements, ideal for both standard and high-precision setups
- Single row structure balances load capacity and rotational efficiency, making it a versatile choice for industrial and automotive uses
- Product Name
- Koyo 6305 2RS Deep Groove Ball Bearing 25x62x17mm
- Category
- Cylindrical Roller Bearing
- Quality Standard
- ISO 9001 / TS 16949
- Lead Time
- 8-12 Weeks Custom
- Minimum Order
- Negotiable
15+ Certified Engineers On-Call
Free application analysis · Failure diagnosis · Custom modification guidance. Response within 24 hours.
Product Specifications
| Parameter | Details |
|---|---|
| Model Number | Nj2215m |
| Bearing Type | Cylindrical Roller Bearing |
| Bore Diameter (d) | 75mm |
| Outside Diameter (D) | 130mm |
| Width (B) | 31mm |
| Material | Bearing Steel |
| Seals Type | Open |
| Load Direction | Radial Bearing |
| Number of Row | Single Row |
| Structure | Cylindrical |
| Spherical | Non-Aligning Bearings |
| Separated | Separated |
| Lubricate | Oil Grease Dry |
| Precision Rating | P0 P6 P5 P4 P2 |
| Specification | 75*130*31mm |
Application Suitability
| Industry | Typical Applications |
|---|---|
| Automation Equipment | Conveyor systems, gearboxes |
| Steel Metallurgy | Rolling mill machinery |
| Hydraulic Systems | Pump assemblies, hydraulic motors |
| Machinery | Industrial gear units, machine tool spindles |
Struggling with Bearing Reliability? The Koyo 6305 2RS Deep Groove Ball Bearing Delivers Consistent Performance
Many maintenance teams face the frustration of unexpected bearing failures—whether from misaligned dimensions, substandard materials, or difficulty sourcing the right replacement. When a bearing fails prematurely, it leads to costly downtime, especially in critical applications like conveyor systems or hydraulic equipment. Sourcing from multiple suppliers to find the right model only adds complexity to the process.
Engineered for Long-Lasting Performance in Demanding Environments
The Koyo 6305 2RS deep groove ball bearing addresses these challenges with its precision manufacturing and versatile design. As a professional bearing supplier with ISO 9001 certified processes, we ensure each unit meets strict quality standards, from raw material inspection to final dimensional testing. With a bore diameter of 25mm, outer diameter of 62mm, and width of 17mm, this bearing fits seamlessly into standard industrial applications, supported by our extensive inventory for quick turnaround.
Optimal Performance in Radial Load Applications
This deep groove ball bearing excels in environments with radial loads, making it ideal for rotating equipment such as electric motors, pumps, and agricultural machinery. Its double rubber seals (2RS) provide effective protection against contaminants, extending service life in dusty or moist conditions. The single row structure ensures efficient load distribution, while the bearing steel construction offers the hardness needed to withstand continuous operation.
Key Engineering Features That Impact Reliability
The 6305 2RS design incorporates critical elements that enhance performance. The deep groove geometry allows for high radial load capacity, while the precision rating options (P0 to P2) cater to applications requiring tight tolerances. The rubber seals not only prevent debris ingress but also retain lubrication, reducing the need for frequent maintenance. Bearing steel, known for its high fatigue strength, ensures the bearing can handle repetitive stress without premature wear, a critical factor in high-speed rotating equipment.
Why Choosing the Right Bearing Lowers Total Cost
Selecting a quality bearing like the Koyo 6305 2RS reduces long-term costs by minimizing downtime and replacement frequency. Inferior bearings often fail due to inadequate material hardness or poor dimensional accuracy, leading to equipment vibration, noise, and even secondary component damage. By adhering to international standards, this bearing ensures consistent performance, aligning with ISO 281 guidelines for bearing life calculation. Investing in a reliable bearing ultimately lowers total cost of ownership by extending maintenance intervals and improving equipment uptime.
Quality You Can Rely On
Our commitment to quality is backed by ISO 9001 certified production and inspection processes. Each bearing undergoes rigorous testing, including dimensional checks, hardness verification, and surface treatment evaluation. We provide a warranty period to cover manufacturing defects, ensuring peace of mind for your operations. With access to a wide range of brands—including Koyo, SKF, NSK, and more—we can source or supply the exact bearing model you need, whether standard or custom.
Packaging & Shipping
- Packaged in cartons with optional palletization for bulk orders
- Available from stock for immediate dispatch
- Flexible shipping options including express courier, air freight, and sea freight
- Low minimum order quantity, supporting both small repairs and large-scale production
Get Your Koyo 6305 2RS Bearing Quote Today
Whether you need a single replacement or bulk quantities, we can provide competitive pricing and fast delivery. Share your requirements—including model, dimensions, and quantity—and our team will respond promptly with availability and lead time. Don’t let bearing issues slow down your operations; confirm your order and get back to productive work.
Frequently Asked Questions
Q: Can you supply other bearing brands or models?
A: Yes, we support inquiries for all major brands and models, including both international and domestic options, and can source according to your specific requirements.
Q: How do I confirm if this bearing fits my equipment?
A: Provide your equipment’s bearing dimensions (d x D x B) or model number, and our technical team will verify compatibility with the Koyo 6305 2RS specifications.
Q: What is your warranty policy?
A: We offer a warranty period covering manufacturing defects; specific terms are detailed in the supply contract, and defective products can be replaced under this coverage.
Q: What is the minimum order quantity?
A: We accept low minimum orders, making it suitable for small-scale repairs or trial purchases before larger commitments.
Q: How quickly can you ship the bearing?
A: Stock items are shipped within 1-2 business days; shipping time depends on the selected method—express, air, or sea freight.
Q: Do you offer OEM/ODM customization?
A: Yes, we support custom bearing production according to provided drawings or specifications, including material and design modifications.
Ready to order or need a quote?
Send the bearing model, dimensions (d x D x B), and quantity — we’ll get back to you with pricing and lead time.
Contact us at [your email/phone]
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Mining & Heavy Industry
Crushers, conveyors, and processing equipment bearings designed to withstand shock loads and contaminated environments.
Steel & Metallurgy
Rolling mill and continuous casting bearings rated for extreme temperatures, heavy loads, and aggressive lubricants.
Automotive & EV
Hub units, transmission, and electric motor bearings meeting TS 16949 requirements for passenger and commercial vehicles.
Precision Machinery
Machine tool spindle and robotics bearings with P4/P2 accuracy class for ultra-precise positioning and minimal vibration.
General Industrial
Pumps, fans, compressors, and conveyor systems across all manufacturing sectors requiring reliable, cost-effective bearing solutions.
Authorized SKF Engineering Partner
Official partner since 1998 with direct access to SKF technical resources, genuine products, and engineering expertise.
15+ Certified Engineers On-Staff
In-house team provides application design, failure analysis, and predictive maintenance -- reducing bearing failures by 35%.
ISO 9001 & TS 16949 Certified QC
Every product undergoes rigorous pre-shipment inspection with full documentation for traceability and compliance.
Global Logistics to 50+ Countries
Dedicated account managers and reliable delivery networks ensure on-time supply for enterprise clients worldwide.
Performance Metrics
35%
Failures Prevented
70%
Downtime Reduction
25+
Years Experience
24h
Quote Response
78% of large enterprises prefer suppliers offering integrated technical support and lifecycle services.
Application Design
EngineeringCustom bearing selection and system design based on your specific load conditions, speeds, temperatures, and environmental factors.
Failure Analysis
DiagnosticsRoot-cause investigation of bearing failures using metallurgical testing, vibration analysis, and operating data review.
Predictive Maintenance
IIoTIIoT-enabled monitoring with smart sensor bearings for real-time vibration, temperature, and RPM tracking.
Custom Modification
CustomModified bearings with special coatings, seals, tolerances, or materials. Lead time 8-12 weeks from official channels.
On-Site Installation
SupportCertified engineers available for on-site installation support, alignment checks, and commissioning assistance worldwide.
Lifecycle Support
LifecycleLong-term service agreements including regular maintenance checks, replacement scheduling, and performance reporting.
Free samples available for orders over $50K
Validated against your KPIs before full production commitment.
-- Get In Touch
Request a Technical Consultation & Quote
Our certified engineers will review your application requirements and provide a detailed quote within 24 hours.
Address
No. 377 Bansongyuan Road, Huangpu District, Shanghai, China
Free Sample Program
Orders over $50K qualify for free product samples
Test against your KPIs before full production commitment. Ask our engineers for details.
Product Inquiry Form
Regarding: Koyo 6305 2RS Deep Groove Ball Bearing 25x62x17mm
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SKF Authorized Engineering Partner
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