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Metric Size Standard Miniature Ball Bearings SMR72

Metric Size Standard Miniature Ball Bearings SMR72

The SMR72 is a compact miniature ball bearing with a 2mm bore and 7mm outer diameter, crafted entirely from stainless steel for durability. It handles radial loads up to 66 lbf and spins smoothly at speeds up to 56,700 RPM.

Its open design makes lubrication straightforward, while the stainless steel cage ensures reliable performance in various conditions. The bearing operates well in temperatures from -30°C to 110°C.

With a lightweight build at just 0.43g, it’s ideal for small, precision applications like miniature motors or delicate instruments. Compliant with RoHS and REACH standards, it’s a safe choice for diverse environments.

The ABEC1 tolerance and MC3 radial clearance provide balanced performance for everyday use. Perfect for hobbyist projects or compact devices where space is limited.

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Product Parameters

  • Part Number SMR72
  • Brand TFL
  • Interchangeable EZO
  • Bore Dia 2 mm
  • Bore Dia Tolerance -0.008mm to 0
  • Outer Dia 7 mm
  • Outer Dia Tolerance -0.008mm to 0
  • Width 2.5 mm
  • Width Tolerance -0.12mm to 0
  • Ball Qty 7
  • Ball Dia 1.2000 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 Stainless Steel
  • Ball Material Stainless Steel
  • Cage Material Stainless Steel
  • Dynamic Radial Load 66 lbf
  • Static Radial Load 21 lbf
  • Temperature Range -30° to 110 °C
  • Lubrication Required
  • RoHS Compliant
  • REACH Compliant
  • Max Speed 56700 rpm
  • Weight 0.43 g
  • Price（$） 2.106
Metric Size Standard Miniature Ball Bearings SMR72 dimension drawing
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Features

Performance Features of SMR72 Bearing

SMR72 Bearing is crafted with stainless steel rings and balls, offering reliable radial load support.
Its compact size of 2 mm×7 mm×2.5 mm makes it ideal for miniature applications.

The open design allows for easy lubrication, ensuring smooth operation at high speeds.
With a maximum speed of 56,700 rpm, it delivers efficient performance in precision tasks.

SMR72 Bearing’s ABEC1 tolerance ensures consistent quality for standard applications.
The stainless steel cage maintains ball alignment, reducing friction and wear.

Application

Common Applications of SMR72 Bearing
SMR72 Bearing is widely used in small-scale industrial equipment, such as miniature motors and precision instruments, where its compact size and radial load capacity are beneficial. The stainless steel construction ensures durability in various operating conditions.

In consumer electronics, SMR72 Bearing can be found in devices like small fans and handheld tools, providing smooth rotation with minimal maintenance. Its lightweight design makes it ideal for portable applications.

For automation systems, SMR72 Bearing supports components in robotic arms and 3D printers, where precise movement is essential. The open design allows for easy lubrication, enhancing its performance in continuous operations.

Medical devices also benefit from SMR72 Bearing, particularly in surgical tools and diagnostic equipment, where reliability and hygiene are critical. The stainless steel materials resist corrosion, ensuring long-term functionality.

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