Cylindrical Roller Bearing
Koyo 6305 2RS Deep Groove Ball Bearing 25x62x17mm
ISO 9001 TS 16949
Genuine SKF
50+ Countries
24h Response

-- 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

Technical Specifications
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.

01

Authorized SKF Engineering Partner

Official partner since 1998 with direct access to SKF technical resources, genuine products, and engineering expertise.

02

15+ Certified Engineers On-Staff

In-house team provides application design, failure analysis, and predictive maintenance -- reducing bearing failures by 35%.

03

ISO 9001 & TS 16949 Certified QC

Every product undergoes rigorous pre-shipment inspection with full documentation for traceability and compliance.

04

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

Engineering

Custom bearing selection and system design based on your specific load conditions, speeds, temperatures, and environmental factors.

Failure Analysis

Diagnostics

Root-cause investigation of bearing failures using metallurgical testing, vibration analysis, and operating data review.

Predictive Maintenance

IIoT

IIoT-enabled monitoring with smart sensor bearings for real-time vibration, temperature, and RPM tracking.

Custom Modification

Custom

Modified bearings with special coatings, seals, tolerances, or materials. Lead time 8-12 weeks from official channels.

On-Site Installation

Support

Certified engineers available for on-site installation support, alignment checks, and commissioning assistance worldwide.

Lifecycle Support

Lifecycle

Long-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.

Contact Engineering Team

-- 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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ISO 9001 · TS 16949 · Authorized SKF Partner · Since 1998

SKF Authorized Engineering Partner

Need technical support or a custom solution?

15+ certified engineers ready to help. Response within 24 hours.