Product Specifications
| Parameter |
Details |
| Model NO. |
31308 |
| Lubrication |
Grease or Oil |
| Precision Rating |
P0, P6, P5, P4, P2 |
| Vibration |
Z1V1, Z2V2, Z3V3 |
| Service |
OEM, ODM |
| Transport Package |
Carton, Pallet |
| Specification |
40*90*23mm |
| Trademark |
NSK |
| Origin |
Japan |
| HS Code |
8482200000 |
Application Industries
| Industry |
Typical Equipment |
| Manufacturing |
Machine Tool Spindles, CNC Machines, Precision Lathes |
| Industrial Machinery |
Gearboxes, Reducers, Metal Cutting Equipment |
Machine Tool Spindles Can’t Afford Downtime — Get Genuine NSK 31308 Taper Roller Bearings
Machine tool operators know the cost of spindle failure: unplanned downtime, scrapped workpieces, and missed deadlines. Many struggle with counterfeit bearings that fail prematurely, or suppliers with rigid MOQs that force overstocking. When your CNC lathe or precision grinder needs a replacement taper roller bearing, waiting weeks for delivery isn’t an option.
Genuine NSK 31308 Bearings: In Stock and Engineered for Machine Tool Spindles
Our Japan-made NSK 31308 taper roller bearings solve these pain points. As an authorized supplier with decades of export experience, we stock genuine NSK bearings with P0-P4 precision grades, ensuring compatibility with high-speed machine tool spindles. With a 1-piece MOQ for standard bearings and sample orders shipped in 3-5 working days, we eliminate the need for bulk pre-orders while guaranteeing authentic, traceable products.
Engineered for High-Precision Spindle Performance
The 31308 taper roller bearing is specifically designed for machine tool spindles, where radial and axial load capacity are critical. Its 40mm bore diameter, 90mm outer diameter, and 23mm width balance compact design with robust performance, making it ideal for precision machining applications. Whether your equipment operates at high speeds or under heavy cutting loads, this bearing maintains stability, reducing vibration and ensuring consistent workpiece accuracy.
Precision and Vibration Control: Key to Spindle Longevity
Three technical features define this bearing’s performance in machine tool spindles. First, precision ratings from P0 to P4 ensure minimal runout, critical for maintaining tight tolerances in metalworking. Second, Z1V1 to Z3V3 vibration grades reduce noise and heat generation, extending spindle life by minimizing wear. Third, compatibility with both grease and oil lubrication allows adaptation to specific machine requirements, from high-speed CNC spindles to heavy-duty lathes. These attributes directly translate to fewer tool changes, reduced scrap rates, and longer intervals between maintenance.
The Hidden Cost of Non-Genuine Taper Roller Bearings
Counterfeit 31308 bearings may seem cheaper upfront, but they often lack the material quality and manufacturing precision of genuine NSK products. Substandard steel and poor heat treatment lead to premature fatigue, with failure rates up to 70% higher in machine tool applications. The result? Unplanned downtime costing $500-$2,000 per hour, damaged spindle components, and lost production. Our genuine NSK bearings meet ISO, ABMA, and DIN standards, backed by ISO 9001:2015 quality management systems, ensuring total cost of ownership is lower over the long term.
Why Machine Tool Manufacturers Trust Our NSK Bearings
Our reputation is built on four pillars of reliability. As an authorized NSK supplier, every bearing comes with traceable documentation, ensuring authenticity. Our in-house QC team conducts dimensional and vibration testing before shipment, matching the same strict standards as NSK’s own facilities. With 18 years in the industry, we’ve served over 5,000 customers across Europe, North America, and Southeast Asia, including major machine tool manufacturers. Our technical team provides free guidance on bearing selection and installation, helping you avoid costly选型 mistakes. Plus, with 12-month warranty coverage and free replacement for qualified defects, we stand behind every bearing we supply.
Packaging & Shipping
- Original NSK packaging with brand verification labels and product specifications
- Sample orders shipped within 3-5 working days; bulk orders within 5-15 working days
- Global delivery via DHL, FedEx, UPS, air freight, or sea freight based on urgency
- Real-time logistics tracking provided from warehouse to delivery
- 1-piece MOQ available for emergency repairs, with volume discounts for bulk orders
Get Your Machine Tool Back to Work — Order Today
Every day your machine tool is down costs money. With genuine NSK 31308 taper roller bearings in stock and ready to ship, you can minimize downtime and restore production quickly. Whether you need a single replacement or a bulk order for maintenance inventory, we ensure fast delivery and reliable performance.
Frequently Asked Questions
Q: Are these genuine NSK bearings?
A: Yes, we are an authorized NSK supplier. All bearings are sourced directly from NSK Japan and come with full traceability documentation to verify authenticity.
Q: How do I confirm if the 31308 is compatible with my machine tool spindle?
A: Provide your machine model, spindle specifications, or existing bearing part number. Our technical team will cross-verify compatibility and recommend the appropriate precision grade.
Q: What is the warranty period for these bearings?
A: All NSK bearings come with a 12-month warranty from the date of delivery, covering manufacturing defects. Defective products will be replaced free of charge or refunded.
Q: What is the minimum order quantity?
A: We accept orders for 1 piece of standard bearings, ideal for emergency repairs or single-unit replacements.
Q: How long does shipping take to [my country]?
A: Sample orders typically arrive within 3-7 working days via express courier. Bulk orders ship within 5-15 working days, with transit times varying by destination.
Q: How can I verify the bearing’s真伪 after delivery?
A: Check the packaging for NSK’s holographic label, scan the QR code for product authentication, and verify the laser-etched part number matches NSK’s official specifications. We provide additional certification upon request.
Ready to order or need a quote?
Send your bearing model (31308, 31309, or 31310), machine tool details, and quantity — our team will respond with pricing and availability within 24 hours.
