Ball Bearing

High Precision NTN 6308ZZ Deep Groove Ball Bearing 40x90x23mm for Industrial Machinery

SKU: bf24302e614e In Stock

Ensure smooth, precise rotation for your industrial machinery with the High Precision NTN 6308ZZ Deep Groove Ball Bearing, engineered to minimize downtime and enhance operational efficiency. This 40x90x23mm radial bearing delivers reliable performance even under continuous loads, thanks to its single-row design and P0-P4 precision ratings that meet strict industrial standards.

  • Sealed with ZZ shields to keep contaminants out and lubrication in, ensuring long service life in harsh working environments
  • Non-aligning construction maintains stability at high speeds, critical for machine tools and heavy-duty equipment
  • Compatible with grease or oil lubrication, offering flexibility to match your specific application needs
Wholesale Price (FOB)
¥1.50
MOQ: 1 Piece • Bulk discounts available on inquiry
12-Month Warranty
Free Samples
Global Shipping
Product Specifications

Technical Details & Description

Product Specifications

Parameter Details
Model NO. 6308ZZ
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
Contact Angle
Transport Package Carton, Pallet
Specification 40×90×23 mm
Trademark NTN
Origin Japan
HS Code 8482102000

Application Industries

Industry Typical Equipment
Industrial Machinery Machine Tools, Printing Presses, Gearboxes
Manufacturing CNC Machines, Electric Motors, Conveyors
Automotive Transmission Systems, Pumps, Compressors
Agriculture Tractor Components, Harvester Drivetrains
New Energy Wind Turbine Accessories, Solar Equipment

Minimize Downtime with High Precision NTN 6308ZZ Deep Groove Ball Bearing

Equipment failures from substandard bearings cost manufacturers thousands in lost production each year. Many buyers struggle with long lead times for critical replacements or uncertainty about part authenticity. When your machinery relies on precise rotation, choosing the wrong bearing can lead to premature wear, increased noise, and unexpected shutdowns.

Genuine NTN 6308ZZ Bearings, Ready for Immediate Shipment

Our High Precision NTN 6308ZZ Deep Groove Ball Bearing eliminates these frustrations. As an integrated manufacturer and exporter with ISO9001 certification, we ensure every unit meets NTN’s strict quality standards. With 1pc MOQ for standard items and 3–5 day sample lead time, we support both emergency repairs and planned maintenance. This 40x90x23mm bearing delivers reliable performance in industrial machinery, from machine tool spindles to conveyor systems.

Engineered for Demanding Industrial Environments

The NTN 6308ZZ thrives in high-speed, radial load applications common in manufacturing and automation. Its single-row design and 0° contact angle optimize radial load handling, while ZZ seals provide effective protection against dust and debris. Whether operating in temperature-controlled workshops or dusty factory floors, this bearing maintains consistent performance, reducing unplanned downtime and maintenance costs.

Key Technical Features That Matter

Precision rating options (P0-P4) allow customization for specific accuracy needs—P4 grade suits high-speed spindles requiring minimal runout, while P0 offers cost-effective reliability for general machinery. Vibration grades Z1V1 to Z3V3 address noise sensitivity; Z3V3 is ideal for precision equipment where quiet operation is critical. The bearing steel construction ensures durability, with dynamic load capacities supporting continuous operation under demanding conditions. Unseparated design simplifies installation and reduces assembly errors in production lines.

Why Authenticity Translates to Lower Total Cost

Counterfeit bearings may offer lower upfront prices, but they often fail prematurely—costing more in replacement parts, labor, and production losses. Our NTN 6308ZZ bearings come with full traceability, ensuring you receive components engineered to original specifications. With a 12-month global warranty, we stand behind every unit, providing defect replacement or refund if issues arise. Choosing genuine parts reduces long-term costs by extending equipment life and minimizing downtime.

Your Reliable Bearing Partner Since 2005

With over 18 years serving global buyers across Europe, America, and Southeast Asia, we combine manufacturing expertise with responsive service. Our QC lab rigorously tests every batch, and ISO14001 certification reflects our commitment to quality and sustainability. We offer free technical guidance to help you select the right bearing for your application, and our flexible payment options (T/T, credit card, Alibaba trade) simplify transactions. Whether you need 1 piece for emergency repair or bulk orders for production, we ensure stable supply with 5–15 day bulk delivery times.

Packaging & Shipping

  • Original NTN packaging with brand authentication labels, secured in cartons and palletized for safe transport
  • Sample lead time: 3–5 business days for standard specifications
  • Bulk delivery: 5–15 days from order confirmation
  • Global shipping via DHL, FedEx, UPS, or sea freight—we select the most cost-effective option based on your location
  • 1pc minimum order quantity, supporting both maintenance and small-batch production needs

Secure Your NTN 6308ZZ Bearing Today

Don’t let equipment downtime impact your bottom line. The High Precision NTN 6308ZZ Deep Groove Ball Bearing is in stock and ready to ship. Send us your order details, and we’ll confirm availability within hours—so you can get back to production faster.

Frequently Asked Questions

Q: Are these genuine NTN bearings?

A: Yes, we supply authentic NTN bearings with full traceability. Each unit comes in original packaging with verification labels to ensure authenticity.

Q: How do I confirm if the 6308ZZ fits my machinery?

A: Provide your equipment model or shaft dimensions (40mm bore, 90mm outer diameter, 23mm width), and our technical team will verify compatibility at no cost.

Q: What is your warranty policy?

A: We offer a 12-month global warranty covering manufacturing defects. If a bearing fails under normal use, we provide free replacement or a full refund.

Q: What is the minimum order quantity?

A: We accept orders for 1 piece, making it easy to source emergency replacements or test samples before bulk purchases.

Q: How quickly can you ship?

A: Standard items are in stock with 3–5 day sample lead time and 5–15 day bulk delivery. We prioritize urgent orders to minimize your downtime.

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

A: Check the NTN trademark on the inner ring, scan the packaging’s QR code for factory verification, and request a certificate of authenticity with your order.

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

Sample Policy

Free samples available for distributors. 3–5 days production lead time.

Bulk Delivery

5–15 days for bulk orders. T/T, L/C and Alibaba payments accepted.

Certifications

ISO 9001:2015, ISO 14001 certified. ABMA / DIN compliant.

After-Sales

12-month warranty plus dedicated technical failure analysis support.

Engineering Insights

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