4x9x4 mm ( SMR684-ZZ ) Si3N4 Ceramic Bearings

SKU: 040904061

Premium 4 x 9 x 4 Stainless Steel ABEC-7 with Si3N4 Ceramic Balls (Silicon Nitride). Silicon Nitride (Si3N4) ceramic bearings are 30% lighter than steel and 40% stronger. They have an incredible maximum spin rating of 300,000 rpm under load. These bearings are great for fishing reels and other application that require fast spinning rate.


Inner Diameter: 4 mm
Outer Diameter: 9 mm
Thickness: 4 mm
Also Known As: SMR684-ZZ
ABEC Rating: ABEC-7
Bearing Type: Radial Bearing
Material: Outer Ring, Inner Ring, Cage and Shield: 440C Stainless Steel (Magnetic)
Balls: Si3N4 Ceramic
Closures: Stainless Steel Shields Both Sides


Keywords: 4 x 9 x 4 mm, 4mm x 9mm x 4mm, 4 mm x 9 mm x 4 mm, SMR684-ZZ, SMR684ZZ, SMR684zz

Price: $18.00