Wholesale NN3020 NN3020K Super Precision Roller Bearing 100x150x37mm Double Row Cylindrical Bearing With W33 Option

• NN3020 is a double-row super precision cylindrical roller bearing with straight inner bore, dimension 100×150×37mm. It adopts NN structural design with double ribs on inner ring and rib-free separable outer ring, which enables easy assembly and disassembly. This bearing bears heavy pure radial loads and delivers ultra-high rigidity, supporting high-precision stable rotation at medium-high speed. Optional W33 lubrication groove, brass cage and P4/P5 high precision grades are available. It is the core spindle bearing widely applied to CNC lathes, grinding machines and other precision machining equipment.

*Send inquiry to get complete technical datasheet and factory price of NN3020 spindle bearing.

• Double-row cylindrical roller structure, ultra-high radial load capacity and outstanding rigidity
• NN separable design: outer ring can be detached separately, convenient for spindle installation and maintenance
• Straight bore standard; tapered bore NN3020K (1:12 taper) is optional for adapter sleeve mounting
• Open type design, match centralized oil supply system; W33 version with outer ring lubrication groove & oil holes
• Multiple precision grades P0/P5/P4 to meet different precision machining requirements
• Brass or polyamide cage options, low friction and stable high-speed operation

• CNC machine tool main spindles
• Precision internal & external grinding machines
• High-speed precision lathes
• Rotary tables for automation equipment
• Textile high-speed spinning spindles
• Precision testing rotary machinery

• High-purity GCr15 bearing steel with strict heat treatment to guarantee hardness, wear resistance and dimensional stability.
• Superfine grinding for raceways and rollers, strict precision inspection to reach P4 high precision standard.
• Complete specifications: straight bore NN3020, tapered bore NN3020K, W33 lubrication type and different cage materials.
• Sufficient stock for precision spindle bearings, support sample testing and bulk wholesale with fast delivery.
• Professional technical team provides spindle matching consultation, OEM laser marking and customized packaging service.

*Contact our engineer to select precision grade, cage type and W33 version for your machine spindle.

*Large stock for double row cylindrical roller bearings, support fast bulk order delivery.