8578/8520CD Tapered Roller Bearing Specifications
Bore d (mm)
241.3
Outer D (mm)
327.025
Width B (mm)
82.55
Dynamic rating Cr (kN)
900
Static rating Cor (kN)
233
Grease limit speed (r/min)
—
Oil limit speed (r/min)
—
Frequently Asked Questions / FAQ
How do I select the right fit for RUIST 8578/8520CD?
For 8578/8520CD 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 8578/8520CD?
Bore d = 241.3 mm, outer diameter D = 327.025 mm, width B = 82.55 mm — fully compliant with ISO/DIN standard envelope dimensions.
What is RUIST 8578/8520CD 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 8578/8520CD?
Yes — 2D drawings, 3D models and full specification sheets are available on request; bulk and customized (non-standard) orders are supported.