NN3960 Cylindrical Roller Bearing Specifications
Bore d (mm)
300
Outer D (mm)
420
Width B (mm)
90
Dynamic rating Cr (kN)
855
Static rating Cor (kN)
1800
Grease limit speed (r/min)
1800
Oil limit speed (r/min)
2300
Frequently Asked Questions / FAQ
How do I select the right fit for RUIST NN3960?
For NN3960 we recommend shaft tolerance k6/m6 on the inner ring and housing tolerance H7/J7 on the outer ring. Proper fits prevent creep and extend service life.
What is the bore, OD and width of RUIST NN3960?
Bore d = 300 mm, outer diameter D = 420 mm, width B = 90 mm — fully compliant with ISO/DIN standard envelope dimensions.
What is RUIST NN3960 made of and what certifications apply?
Manufactured from hardened GCr15 bearing steel with ISO 9001 / IATF 16949 controlled processes; available with OEM branding or as a neutral RUIST part.
Do you supply CAD or DXF drawings for RUIST NN3960?
Yes — 2D drawings, 3D models and full specification sheets are available on request; bulk and customized (non-standard) orders are supported.