🔥 Hot Stock Alert: Deep Groove Ball Bearings 6205-2RS -- 50,000+ units ready to ship
✅ ISO 9001:2015 Certified · 100% Genuine NTN · Full Traceability
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NTN GENUINE
IN STOCK
High Rpm NTN Deep Groove Ball Bearings 604-608 Inch Size for Motors OEM Supply
High Rpm NTN Deep Groove Ball Bearings 604-608 Inch Size for Motors OEM Supply - Side View
High Rpm NTN Deep Groove Ball Bearings 604-608 Inch Size for Motors OEM Supply - Detail
High Rpm NTN Deep Groove Ball Bearings 604-608 Inch Size for Motors OEM Supply - Dimension
Model
NTN-864
Origin
JAPAN
Lead Time
5-7 DAYS
NTN AUTHORIZED · OEM SUPPLIER

High Rpm NTN Deep Groove Ball Bearings 604-608 Inch Size for Motors OEM Supply

MODEL: NTN-864 100% Genuine · Traceable

Ensure your motors run at peak efficiency with NTN Deep Groove Ball Bearings engineered for high rpm performance in inch sizes 604-608. These single-row radial bearings deliver consistent rotation even under demanding conditions, eliminating unexpected downtime that disrupts production schedules.Precision-rated P0-P4 with Z1V1-Z3V3 vibration control ensures smooth operation in motor applicationsAvailable with ZZ, 2RS, or open seals to match your lubrication needs (grease or oil)100% genuine NTN components with full traceability, backed by our ISO 9001 quality system for reliable OEM integration

Key Specifications
SPEC-01
Bore (d)
75mm
OD (D)
130mm
Width (B)
31mm
Dyn. Load Cr
183 kN
Stat. Load C0
220 kN
Lim. Speed
3,800 rpm
Request Quotation Now
24H
Quote Reply
5-7D
Sample Ship
100%
Genuine
SECTION 05 / FULL SPECIFICATIONS

Complete Technical Parameters

All specifications strictly follow NTN factory standards. Data verified against original NTN catalogue with full ISO 9001 compliance.

Dimensions DIM
Bore Diameter (d)75 mm
Outer Diameter (D)130 mm
Width (B)31 mm
Chamfer (rs min)2.1 mm
Net Weight1.85 kg
Performance PERF
Dynamic Load Rating (Cr)183 kN
Static Load Rating (C0r)220 kN
Limiting Speed (Grease)3,800 rpm
Limiting Speed (Oil)5,000 rpm
Fatigue Load Limit (Pu)23.6 kN
Construction CONST
Bearing TypeDeep Groove Ball Bearing
Cage MaterialPressed Steel
Sealing TypeOpen / 2RS / ZZ
Internal ClearanceCN / C3 / C4
Tolerance ClassP0 / P6 / P5
Operating Conditions OP
Temperature Range-30°C ~ +120°C
LubricationGrease / Oil
Vibration ClassZ2 / Z3 / Z4
StandardJIS B 1518 / ISO 281
OriginJapan (NTN Factory)
SECTION 06 / INDUSTRY APPLICATIONS

Compatible Equipment & Industries

Validated by 2,400+ OEM customers across 50+ countries. Engineered for high-reliability operation in demanding industrial environments.

01

Steel Mills

Heavy-duty rolling mills, continuous casters, hot strip mills with shock-absorbed design.

02

Mining Equipment

Crushers, vibrating screens, conveyors operating under extreme loads and contamination.

03

Paper Machines

Drying cylinders, calenders, press rolls requiring vibration damping.

04

Conveyor Systems

Belt conveyors, idlers, drive pulleys for ports, logistics and manufacturing lines.

05

Cement & Aggregate

Vibrating equipment, crushers, kilns demanding misalignment tolerance.

06

Wind Power

Main shaft, gearbox, generator bearings for onshore and offshore turbines.

07

Petrochemical

Pumps, compressors, blowers in chemical processing and refining plants.

08

Construction Machinery

Excavators, cranes, loaders, drilling rigs working under impact loads.

09

Marine & Offshore

Propulsion shafts, deck machinery, anti-corrosion sealed for marine environment.

SECTION 07 / ENGINEERING DEEP DIVE

Why NTN Outperforms in Critical Applications

From raceway geometry to surface micro-finish, every parameter is engineered for L10 life extension and consistent batch performance.

MATERIAL

Premium Carburized Steel

High-purity SUJ2 / 100Cr6 bearing steel with vacuum degassing. Carburized case depth precisely controlled at 2.5-3.5mm with HRC 60-62 surface hardness.

  • Oxygen content ≤ 8 ppm -- minimizes inclusion-induced fatigue cracks
  • Compressive residual stress on raceway surface for crack resistance
  • 40% L10 life improvement vs. industry standard steel
SEALING

Multi-Lip NBR / FKM Seals

Choice of contact (2RS), non-contact (2Z) and metal shielded (ZZ) options. Designed for IP65 dust ingress protection and grease retention.

  • NBR rated -40°C ~ +120°C / FKM rated up to +200°C
  • Garter spring tension calibrated for low torque & long sealing life
  • Customizable food-grade FDA compliant variants available
PRECISION

P0 to P5 Tolerance Class

Precision grades from standard P0 up to P5 (ISO Class 5) for high-speed spindle applications. Inspected on Mahr / Talyrond CMM equipment.

  • Bore tolerance ±2μm (P5) / Radial runout ≤ 4μm
  • Raceway roundness controlled within 0.8μm
  • Vibration class Z2/Z3/Z4 for low-noise applications
CLEARANCE

CN / C3 / C4 Internal Clearance

Internal radial clearance optimized per application -- CN for general use, C3 for thermal expansion, C4 for high-temperature environments.

  • Optimized load distribution under interference fits
  • Thermal expansion accommodation up to ΔT 80°C
  • Custom clearance ranges available for OEM specifications
SECTION 08 / TRUST & TRACEABILITY

100% Genuine NTN.
Traceable. Warranted.

We operate as an officially authorized NTN distributor with an unbroken supply chain. Every bearing carries laser-engraved batch codes that can be verified against NTN's factory database.

Authorized Distributor

Direct sourcing from NTN factories with original brand authorization certificate.

Laser Batch Code

Every bearing engraved with traceable batch ID. Verifiable via NTN factory MES system.

Full Documentation

Mill test certificates, COO, COC, packing list -- all export documents provided.

12-Month Warranty

Standard 12-month quality warranty. Free replacement for verified manufacturing defects.

2,400+
OEM Customers
50+
Countries Served
99.97%
QC Pass Rate
10+
Years Experience
SECTION 09 / PACKAGING & SHIPPING

Export-Ready Packaging, Worldwide Door-to-Door Delivery

Real-time WMS inventory ensures rapid dispatch. Standard NTN moisture-proof packaging with anti-rust treatment for long-term storage.

NTN original packaging with moisture protection
PACKAGING

Original NTN Packaging

  • Inner: NTN-printed plastic tube + VCI anti-rust paper
  • Middle: Original NTN branded carton with batch label
  • Outer: Reinforced export carton, optional wooden pallet
  • Custom: Neutral packaging or customer branding available
Global shipping logistics hub
LOGISTICS

Global Shipping Options

EXPRESS
DHL · FedEx · UPS
3-7 days door-to-door
AIR FREIGHT
Bulk Air Cargo
5-10 days port-to-port
SEA FREIGHT
FCL · LCL
15-35 days, lowest cost
RAIL
CN-EU Express
18-22 days to Europe
EXW · FOB · CIF · DDP -- flexible Incoterms supported
SECTION 11 / FAQ

Frequently Asked
Questions

Common questions from OEM and distributor partners. Can't find an answer? Contact our engineering team directly.

Ask a custom question
Q.01 How can I verify the authenticity of NTN bearings I receive?

Every NTN bearing has laser-engraved batch codes on the inner ring. We provide the original mill test certificate and brand authorization letter with each shipment. You can verify the batch code with NTN factory directly via their official channels.

Q.02 What is the typical lead time and minimum order quantity?

In-stock items ship within 5-7 working days. MOQ starts from 1 piece for samples. Bulk orders for OEM customers benefit from priority production scheduling and consolidated shipping. Custom non-standard bearings typically take 30-45 days.

Q.03 Do you offer OEM customization (clearance, sealing, precision)?

Yes. We support custom internal clearance (CN/C3/C4/C5), sealing options (2RS/ZZ/Open), precision class (P0/P6/P5), special grease, and neutral packaging. Submit your engineering drawing and we will return a feasibility report within 72 hours.

Q.04 What documentation is provided for international shipping?

Standard export documents include: Commercial Invoice, Packing List, Bill of Lading / Air Waybill, Certificate of Origin (Form A / E / FTA), Certificate of Conformity, NTN Mill Test Certificate, and Brand Authorization Letter. Customs HS code and country-specific requirements are pre-checked.

Q.05 What is your warranty and return policy?

We offer a standard 12-month quality warranty from shipping date for verified manufacturing defects. Defective products are replaced free of charge. Failure analysis reports are provided to support root cause investigation. Wear due to misapplication or improper installation is excluded.

Q.06 Can you ship under DDP terms to my country?

Yes. We support EXW, FOB, CIF, CFR, and DDP terms. Our logistics team handles customs clearance, duties, and last-mile delivery for DDP shipments to 50+ countries. For sensitive markets, we recommend DDP to avoid customs delays.

PRODUCT DESCRIPTION

Detailed Product Information

Ensure your motors run at peak efficiency with NTN Deep Groove Ball Bearings engineered for high rpm performance in inch sizes 604-608. These single-row radial bearings deliver consistent rotation even under demanding conditions, eliminating unexpected downtime that disrupts production schedules.

  • Precision-rated P0-P4 with Z1V1-Z3V3 vibration control ensures smooth operation in motor applications
  • Available with ZZ, 2RS, or open seals to match your lubrication needs (grease or oil)
  • 100% genuine NTN components with full traceability, backed by our ISO 9001 quality system for reliable OEM integration

Description

Product Specifications

Parameter Details
Model NO. 604, 605, 606, 607, 608
Separated Unseparated
Rows Number Single
Load Direction Radial Bearing
Material Bearing Steel
Product Name Deep Groove Ball Bearing
Bore Size 1-500mm
Seals Type Zz, 2RS, Open
Lubrication Grease or Oil
Precision Rating P0, P6, P5, P4
Vibration Z1V1, Z2V2, Z3V3
Service OEM, ODM
Transport Package Carton, Pallet
Specification 50*80*16mm
Trademark NTN
Origin Japan
HS Code 8482102000
Production Capacity 1000000

Application Industries

Industry Typical Equipment
Motors Electric Motors, Motor Spindles, Fan Motors, Compressor Motors
General Machinery Pumps, Conveyors, Machine Tools, Gearboxes
Automotive Power Window Motors, Blower Motors, Accessory Drives

Prevent Costly Motor Downtime with Genuine NTN 604-608 Deep Groove Ball Bearings

Motor manufacturers and maintenance teams know the frustration: bearings failing prematurely due to counterfeit parts, causing unplanned production stops and repair costs. Multi-tier distribution channels often mean long lead times that disrupt production schedules, while incomplete traceability documents create customs clearance delays and quality disputes.

High-Speed Performance You Can Rely On

Our High Rpm NTN Deep Groove Ball Bearings 604-608 Inch Size are engineered to meet the demands of motor applications, delivering stable performance even at elevated rotational speeds. As an official NTN distributor with WMS real-time inventory, we ensure batch consistency and rapid availability, eliminating the risks of counterfeit products and supply chain delays. These inch-size bearings are ideal for compact motor designs where precision and durability are critical.

Optimal Performance in Motor Applications

NTN 604-608 Bearings excel in high-rpm motor environments, where they承受 radial loads and moderate axial loads with minimal friction. Their single-row design and unseparated construction provide reliable operation in continuous-duty scenarios, such as industrial motor drives and automotive auxiliary motors. The combination of bearing steel material and precision manufacturing ensures consistent performance across temperature variations and operating conditions.

Key Technical Features for Motor Reliability

The performance of these Inch Size Deep Groove Bearings for Motors is defined by critical technical attributes. Precision ratings from P0 to P4 ensure minimal runout and vibration, directly impacting motor efficiency and noise levels—higher precision grades like P5 and P4 are recommended for high-speed motor spindles where accuracy is paramount. Seal options (Zz, 2RS, Open) address different environmental needs: 2RS seals provide effective protection against contaminants in dusty or humid motor enclosures, while open designs suit applications requiring frequent lubrication. Vibration classes Z1V1 to Z3V3 further refine performance, with Z3V3 offering the lowest vibration levels for sensitive motor applications.

Why Genuine NTN Bearings Reduce Total Cost of Ownership

Choosing authentic NTN 604-608 Bearings over gray-market alternatives minimizes long-term costs. Counterfeit bearings often fail early due to substandard materials and manufacturing, leading to motor damage, production downtime, and replacement expenses. Our ISO 9001 compliant three-level quality inspection system ensures each bearing meets NTN’s strict standards, while full product traceability documentation prevents customs issues and liability disputes. The durability of genuine NTN bearings extends motor service life, reducing maintenance frequency and associated labor costs.

Our Commitment to Your Supply Chain Security

As an official authorized NTN distributor, we guarantee 100% genuine products with complete traceability—each bearing can be tracked through our authorized supply chain. With over 10 years of technical expertise, our team provides application-specific guidance, from model selection to installation best practices. We maintain centralized inventory with real-time WMS visibility, supporting flexible order quantities from small batches to bulk OEM supply. Serving clients in 50+ countries, we offer global door-to-door logistics and dedicated account managers who oversee every step from order placement to after-sales support.

Packaging & Shipping

  • Original NTN packaging with product identification and traceability labels, secured in cartons and palletized for bulk orders
  • Stock items shipped within 3-7 business days from order confirmation
  • Global delivery options including DHL, FedEx, UPS, air freight, and sea freight to match your urgency and budget
  • Real-time tracking numbers provided once shipment is dispatched
  • Minimum order quantity of 1 piece, accommodating emergency repairs and small-batch requirements

Secure Your Motor Bearings Today

Don’t let bearing issues disrupt your production schedule. Send us your required model numbers (604-608), motor specifications, and order quantity, and we’ll provide a formal quotation with traceability certificates within 24 hours. Our team can also support sample testing to verify performance before full-scale orders.

Frequently Asked Questions

Q: Are these NTN bearings genuine?

A: Yes, we are an official authorized NTN distributor. Every bearing comes with complete traceability documentation to confirm authenticity, and we can provide brand authorization certificates upon request.

Q: How do I confirm the right bearing model for my motor?

A: Share your motor’s model number, operating speed, load requirements, and environmental conditions with our technical team. We’ll verify the correct 604-608 series bearing specifications for your application.

Q: What is the warranty policy?

A: All NTN bearings are covered by the manufacturer’s warranty against manufacturing defects. We provide full support for warranty claims and replacements.

Q: What is the minimum order quantity?

A: We accept orders starting from 1 piece, making us suitable for both emergency repairs and large-scale OEM production.

Q: How long does shipping take?

A: In-stock bearings are shipped within 3-7 business days. Delivery time depends on your location—express options like DHL typically take 3-5 days globally, while sea freight is available for cost-effective bulk orders.

Q: How can I verify the authenticity of the bearings?

A: Each bearing includes NTN’s original packaging with holographic labels and serial numbers. We also provide traceability documents linking the product to NTN’s official supply chain, and you can cross-verify details through NTN’s official channels.

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SECTION 12 / GET QUOTATION

Ready to Order
NTN-864?

Submit your inquiry below. Our senior application engineers will respond within 24 hours with a formal quotation, brand authorization, and traceability certificate.

  • Formal quotation in 24h
  • Sample within 5-7 days
  • 100% genuine guarantee
  • Worldwide DDP shipping
FORM · INQUIRY-NTN-86 SECURE SSL

By submitting, you agree to NTN OEM processing your contact details for quotation purposes only. We never share information with third parties.

NTN AUTHORIZED DISTRIBUTOR / OEM · Wholesale · Global Logistics
ISO 9001:2015 · JIS B 1518