10-Pack 4x9 Open Bearings 4x9x2.5mm Miniature

10 bearings Wheel Ball Bearings for many applications, this is a go-to bearing size that fits lots of RC cars and trucks, or any application that uses this size 4mm x 9mm x 2.5mm. made from durable 52100 alloy steel, commonly known as chrome steel.

• Size: 4mm x 9mm x 2.5mm
• Deep groove ball bearings
• Closures: Open
• Quantity: 10 Bearings
• Dynamic load rating Cr: 640 N
• Static load rating Cor: 230 N
• Limiting Speed:
  • Grease Lubrication: 59,000 RPM
  • Oil Lubrication: 70,000 RPM
• Packing: 10 bearings in 1 plastic tube
• Equal: 618/4