NKE - 6313-M-C4-SQ77 | Insulated Bearing | 65 × 140 × 33 mm

Details

NKE 6313-M-C4-SQ77 is an insulated bearing with inner diameter 65 mm, outer diameter 140 mm and width 33 mm. Additional specifications include bore type CYLINDRICAL, cage BRASS and lubrication STANDARD.

M=Solid Brass, SQ77 - a special Outer Ring coating to isolate and protect bearings against electrical erosion, C4= Internal Clearance Larger Than Normal C3. This series bearings are single-row deep groove ball bearings engineered for electric motor and industrial drive systems that require both electrical insulation and higher internal clearance for thermal or high-speed operating conditions. These bearings feature a machined brass cage (M) for high mechanical stability and durability, a C4 radial clearance for greater internal play (ideal for higher operating temperatures), and an SQ77 insulation coating on the outer ring, providing effective protection against stray electrical currents. The SQ77 ceramic coating is plasma-sprayed onto the outer ring, offering electrical resistance typically up to 1000 volts, preventing current-induced bearing damage and increasing service life in inverter-driven or variable frequency drive (VFD) applications.

Specifications