High Rigidity Double Row Cylindrical Roller Bearing NN3017 Tn9/Sp for Lathe Main Shaft

Product Specifications

Application Suitability

Need a High Rigidity Double Row Cylindrical Roller Bearing NN3017 Tn9/Sp for Lathe Main Shaft?

Lathe operators and maintenance teams know the frustration of spindle vibrations ruining precision cuts or bearings failing prematurely under heavy loads. When sourcing replacement bearings for lathe main shafts, finding the right balance of rigidity, precision, and durability can be a challenge—especially with the variety of models and quality levels on the market.

Engineered for Lathe Spindle Performance

This High Rigidity Double Row Cylindrical Roller Bearing addresses common lathe spindle issues by providing the stability needed for high-precision machining. With separated inner and outer rings, it allows for easy installation and maintenance, while the 60-64 HRC hardness ensures resistance to wear even under continuous operation. Our extensive inventory covers a wide range of bearing types, including this NN3017 Tn9/Sp model, supporting same-day shipping for urgent replacement needs.

Optimal for High-Rigidity Lathe Operations

Designed specifically for lathe main shafts, this bearing excels in applications requiring minimal deflection under radial loads. Its double row design enhances rigidity, making it suitable for heavy-duty turning and milling operations where precision is critical. The Z1V1 to Z3V3 vibration grades ensure smooth running at high speeds, reducing noise and improving workpiece finish—key factors in maintaining consistent machining quality.

Key Engineering Features Explained

The bearing's separated construction allows for quick disassembly during maintenance, reducing machine downtime. Available clearances (C0 to C5) let you select the right fit for your specific operating conditions—tighter clearances (C2) for precision applications or looser clearances (C4/C5) for high-temperature environments. The brass or steel cage options provide durability; brass cages offer better heat dissipation, while steel cages suit higher load capacities. With outer dimensions in the 120-190mm range, this medium-to-large bearing fits standard lathe spindle configurations, ensuring compatibility with most industrial lathe models.

Why Bearing Quality Impacts Lathe Productivity

Choosing a low-quality bearing for your lathe main shaft can lead to increased vibration, reduced tool life, and frequent replacements—all of which drive up operational costs. A high-rigidity bearing like the NN3017 Tn9/Sp minimizes these issues by maintaining precise alignment, even under heavy cutting forces. By reducing unplanned downtime and ensuring consistent part quality, this bearing contributes to lower total cost of ownership compared to cheaper alternatives that may fail prematurely.

Quality You Can Rely On

Packaging & Shipping

• Packaged in carton pallets to ensure safe transportation
• Same-day shipping available for in-stock items
• Flexible delivery options including快递,空运, and海运
• Low minimum order quantity supported, ideal for both maintenance and production needs

Get a Quote for Your Lathe Main Shaft Bearing

If you need the High Rigidity Double Row Cylindrical Roller Bearing NN3017 Tn9/Sp for your lathe, contact us with your required quantity and delivery location. We can also assist with verifying compatibility if you provide your lathe model or shaft dimensions. The sooner you confirm your order, the sooner we can arrange shipping to minimize your machine downtime.

Frequently Asked Questions