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Metric Size Standard Miniature Ball Bearings MR63
Metric Size Standard Miniature Ball Bearings MR63

Metric Size Standard Miniature Ball Bearings MR63

The MR63 is a compact miniature ball bearing with a 3mm bore and 6mm outer diameter, crafted from sturdy chrome steel. It handles radial loads up to 40 lbf and spins efficiently at speeds up to 71,000 RPM.

Its open design requires regular lubrication, while the stainless steel cage ensures durability. The bearing operates smoothly in temperatures ranging from -30°C to 110°C.

With a lightweight build of just 0.2g, it’s ideal for small-scale applications like precision instruments or small motors. Compliant with RoHS and REACH standards, it’s a reliable choice for various industrial uses.

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Product Parameters

  • Part Number MR63
  • Brand TFL
  • Interchangeable EZO
  • Bore Dia 3 mm
  • Bore Dia Tolerance -0.008mm to 0
  • Outer Dia 6 mm
  • Outer Dia Tolerance -0.008mm to 0
  • Width 2 mm
  • Width Tolerance -0.12mm to 0
  • Ball Qty 8
  • Ball Dia 0.8000 mm
  • Radial Clearance 0.002mm to 0.013mm
  • Seal Type Open
  • System of Measurement Metric
  • Bearing Type Ball
  • For Load Direction Radial
  • Construction Single Row
  • Inner Ring Type Standard
  • Tolerance Class ABEC1
  • Radial Clearance Trade No MC3
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Stainless Steel
  • Dynamic Radial Load 40 lbf
  • Static Radial Load 13 lbf
  • Temperature Range -30° to 110 °C
  • Lubrication Required
  • RoHS Compliant
  • REACH Compliant
  • Max Speed 71000 rpm
  • Weight 0.2 g
  • Price($) 1.035

Features

How Does MR63 Bearing Reduce Friction?

MR63 Bearing features chrome steel rings and balls, designed to minimise friction during operation.
Its precision-engineered single row construction ensures smooth radial load handling.
With a dynamic radial load capacity of 40 lbf, it performs reliably in compact applications.
The stainless steel cage maintains ball alignment, reducing wear and enhancing longevity.

Application

Common Applications of MR63 Bearing
MR63 Bearing is widely used in small electric motors, such as those found in cooling fans or handheld devices, thanks to its compact 3x6x2 mm size. The open design allows for easy lubrication, ensuring smooth operation in continuous-use scenarios.

Where Is MR63 Bearing Used?
You’ll often spot MR63 Bearing in precision instruments like dental drills or optical devices, where its minimal radial clearance ensures accurate performance. Its chrome steel construction also makes it suitable for lightweight mechanical applications.

Ideal for Precision: MR63 Bearing
MR63 Bearing works well in miniature robotics, particularly in joints or pivots requiring low friction. The stainless steel cage adds durability, making it a reliable choice for repetitive movements.

Automotive vs Aerospace: Applications of MR63 Bearing
In automotive models, MR63 Bearing fits well in dashboard instruments or small actuators. For aerospace, its lightweight design suits drone mechanisms or navigation systems where space is limited.

Practical Applications of MR63 Bearing
MR63 Bearing is a go-to for hobbyist projects, like remote-controlled cars or DIY gadgets, due to its affordability and ease of installation. The ABEC1 tolerance ensures decent performance without overcomplicating maintenance.

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