🔥 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 6203 Deep Groove Ball Bearing 17x40x12mm ZZ 2RS for Automotive Motors P0-P4 thumbnail 1
NTN 6203 Deep Groove Ball Bearing 17x40x12mm ZZ 2RS for Automotive Motors P0-P4 - Side View thumbnail 2
NTN 6203 Deep Groove Ball Bearing 17x40x12mm ZZ 2RS for Automotive Motors P0-P4 - Detail thumbnail 3
NTN 6203 Deep Groove Ball Bearing 17x40x12mm ZZ 2RS for Automotive Motors P0-P4 - Dimension thumbnail 4
NTN GENUINE
IN STOCK
NTN 6203 Deep Groove Ball Bearing 17x40x12mm ZZ 2RS for Automotive Motors P0-P4
NTN 6203 Deep Groove Ball Bearing 17x40x12mm ZZ 2RS for Automotive Motors P0-P4 - Side View
NTN 6203 Deep Groove Ball Bearing 17x40x12mm ZZ 2RS for Automotive Motors P0-P4 - Detail
NTN 6203 Deep Groove Ball Bearing 17x40x12mm ZZ 2RS for Automotive Motors P0-P4 - Dimension
Model
6203
Origin
JAPAN
Lead Time
5-7 DAYS
NTN AUTHORIZED · OEM SUPPLIER

NTN 6203 Deep Groove Ball Bearing 17x40x12mm ZZ 2RS for Automotive Motors P0-P4

MODEL: 6203 100% Genuine · Traceable

Ensure seamless automotive motor performance with the NTN 6203 deep groove ball bearing, engineered to deliver consistent rotation and reduced downtime in high-demand applications. This 17x40x12mm precision component (available in ZZ/2RS seals and P0-P4 grades) minimizes vibration (Z1V1-Z3V3 ratings) for smoother operation, directly addressing the need for reliable OEM supply chains.Japan-manufactured NTN quality with full traceability documentation for export complianceSingle-row, non-separated design optimizes radial load handling in automotive motor assembliesGrease/oil lubrication flexibility suits diverse working conditions

Key Specifications
SPEC-01
Bore (d)
17mm
OD (D)
40mm
Width (B)
12mm
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)17 mm
Outer Diameter (D)40 mm
Width (B)12 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 seamless automotive motor performance with the NTN 6203 deep groove ball bearing, engineered to deliver consistent rotation and reduced downtime in high-demand applications. This 17x40x12mm precision component (available in ZZ/2RS seals and P0-P4 grades) minimizes vibration (Z1V1-Z3V3 ratings) for smoother operation, directly addressing the need for reliable OEM supply chains.

  • Japan-manufactured NTN quality with full traceability documentation for export compliance
  • Single-row, non-separated design optimizes radial load handling in automotive motor assemblies
  • Grease/oil lubrication flexibility suits diverse working conditions

Description

Product Specifications

Parameter Details
Model NO. 6203
Seals Type ZZ 2RS Open
Lubrication Grease or Oil
Precision Rating P0 P6 P5 P4
Vibration Z1V1 Z2V2 Z3V3
Service OEM ODM
Aligning Non-Aligning Bearing
Separated Unseparated
Rows Number Single
Load Direction Radial Bearing
Material Bearing Steel
Transport Package Carton Pallet
Specification 17*40*12 mm
Trademark NTN
Origin Japan
HS Code 8482102000

Application Industries

Industry Typical Equipment
Automotive Electric Motors, Alternators, Water Pumps
Manufacturing Conveyor Systems, Machine Tool Spindles, Gearboxes
General Machinery Compressors, Fans, Pumps, Agricultural Machinery

Stop Production Delays with Genuine NTN 6203 Deep Groove Ball Bearings

Counterfeit bearings in automotive motor applications often fail prematurely, causing unexpected downtime and production line shutdowns. Multi-tier distribution channels stretch delivery times by 30-50%, making it difficult to align with maintenance schedules. Without proper technical support, selecting the wrong bearing规格 can lead to increased energy consumption and shortened equipment lifespan.

Genuine NTN 6203 Bearings: In Stock and Traceable

As an official NTN distributor, we provide 100% genuine NTN 6203 deep groove ball bearings with full traceability documentation. Our WMS real-time inventory system ensures immediate availability for automotive motor manufacturers and maintenance providers. Each bearing undergoes a three-level quality inspection under ISO 9001 standards, guaranteeing batch consistency for critical applications like motor spindles and conveyor systems.

Optimal Performance in Automotive Motor Applications

The NTN 6203 bearing excels in high-speed radial load environments typical of automotive electric motors. With a 17x40x12mm dimension and precision ratings from P0 to P4, it maintains stable operation under continuous rotational stress. The ZZ (metal shielded) and 2RS (rubber sealed) options provide flexibility for different contamination and lubrication requirements, ensuring reliable performance in both enclosed and semi-open motor housings.

Technical Details That Maximize Motor Efficiency

The single-row deep groove design of the NTN 6203 bearing enables it to handle radial loads efficiently while accommodating moderate axial loads in both directions. Precision ratings (P0-P4) directly impact rotational accuracy—P4 grade reduces vibration (Z1V1-Z3V3 classes) for low-noise motor operation. The unseparated construction ensures easy installation, while bearing steel material provides durability at operating temperatures up to 120°C. Proper lubrication (grease or oil) selection further extends service life in continuous-duty motor applications.

Why Genuine NTN Bearings Reduce Total Cost of Ownership

Non-genuine NTN 6203 bearings may cost 30% less upfront but often fail within 3000 operating hours, leading to $2,000+ in downtime costs per motor failure. Our authentic bearings, backed by NTN’s engineering standards, typically achieve 15,000+ hours of service in automotive motor applications. Complete traceability documentation eliminates customs clearance delays and quality liability disputes, while our ISO 9001 compliant inspection process ensures each bearing meets original equipment specifications.

Why Global Manufacturers Trust Our NTN Supply

With 10+ years as an authorized NTN distributor, we serve OEM factories and maintenance providers across 50+ countries. Our dedicated technical team offers free model selection support based on working conditions, helping customers avoid costly application mismatches. We maintain centralized inventory with real-time stock visibility, enabling door-to-door delivery within 3-7 days to major automotive manufacturing hubs. All exports include complete documentation packages, including origin certificates and material test reports, to streamline customs clearance.

Packaging & Shipping

  • Original NTN packaging with product traceability labels and batch information
  • Carton pallet packaging for bulk orders, ensuring damage-free transportation
  • Global door-to-door logistics via DHL, FedEx, UPS, air freight, or sea freight
  • Real-time shipment tracking provided from warehouse dispatch to delivery
  • Flexible order quantities: 1 piece for emergency repairs, bulk discounts for OEM production

Get Your NTN 6203 Bearings Delivered Fast

Don’t let bearing issues disrupt your production schedule. Send us your NTN 6203 bearing requirements, including seal type (ZZ/2RS), precision grade (P0-P4), and quantity. Our team will provide a formal quotation with traceability certificates within 24 hours, with stock available for immediate dispatch.

Frequently Asked Questions

Q: Are these authentic NTN bearings?

A: Yes, we are an official authorized NTN distributor. Every NTN 6203 bearing comes with complete traceability documentation and brand authorization certificates.

Q: How do I confirm if the 6203 bearing fits my motor?

A: Provide your motor model or operating parameters (load, speed, temperature), and our technical team will verify compatibility with the NTN 6203 specifications.

Q: What is your warranty policy?

A: We offer NTN’s standard manufacturer warranty. Any manufacturing defects will be replaced unconditionally with supporting documentation.

Q: What is the minimum order quantity?

A: We accept orders for 1 piece to support emergency maintenance, with volume pricing available for OEM production batches.

Q: How long does shipping take to Europe/North America?

A: In-stock NTN 6203 bearings ship within 3-7 business days via express courier to major destinations.

Q: How can I verify the bearing’s authenticity?

A: Each bearing includes NTN’s laser-etched part number, packaging with security labels, and we provide batch traceability reports upon request.

Ready to order or need a quote?
Send your bearing designation, application details, and quantity — we’ll respond within 24 hours.

SECTION 12 / GET QUOTATION

Ready to Order
6203?

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-6203 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