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Metric Size Standard Miniature Ball Bearings MR72zz

Metric Size Standard Miniature Ball Bearings MR72zz

The MR72zz is a compact miniature ball bearing with a 2mm bore and 7mm outer diameter, crafted from sturdy chrome steel. Its small size, just 3mm wide, makes it ideal for tight spaces while handling radial loads up to 74 lbf.

Shielded on both sides, it keeps dust out and spins smoothly at speeds up to 65,000 RPM. The stainless steel cage and balls ensure durability, even in demanding conditions.

With a temperature range of -30°C to 110°C, it suits various environments. Regular lubrication helps maintain its performance over time.

This bearing is perfect for small devices like model motors or precision instruments where space and reliability matter. Compliant with RoHS and REACH standards, it’s a safe choice for many applications.

Weighing only 0.53g, it’s lightweight yet robust for its size. The ABEC1 tolerance ensures consistent performance without being overly precise.

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Product Parameters

  • Part Number MR72zz
  • 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 3 mm
  • Width Tolerance -0.12mm to 0
  • Ball Qty 7
  • Ball Dia 1.2000 mm
  • Radial Clearance 0.002mm to 0.013mm
  • Seal Type Shielded
  • 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
  • Shield Material 300 Series Stainless Steel
  • Dynamic Radial Load 74 lbf
  • Static Radial Load 23 lbf
  • Temperature Range -30° to 110 °C
  • Lubrication Required
  • RoHS Compliant
  • REACH Compliant
  • Max Speed 65000 rpm
  • Weight 0.53 g
  • Price（$） 1.755
Metric Size Standard Miniature Ball Bearings MR72zz dimension drawing
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Features

How Does MR72zz Bearing Reduce Friction?

MR72zz Bearing features a shielded design with chrome steel rings and balls, ensuring smooth operation with minimal friction.

The stainless steel cage aligns the seven balls precisely, reducing wear and enhancing performance.

With a dynamic radial load capacity of 74 lbf, it handles light to moderate loads efficiently.

Its maximum speed of 65,000 rpm makes it suitable for high-speed applications.

Application

Where Is MR72zz Bearing Used?
MR72zz Bearing is commonly used in small electric motors, such as those found in cooling fans or handheld devices, due to its compact size and reliable performance. The shielded design helps keep dust out, ensuring smoother operation over time.

In automation systems, MR72zz Bearing fits well in miniature robotic arms or precision-guided mechanisms, where its low friction and high-speed capability are beneficial. The ABEC1 tolerance ensures consistent performance in these delicate applications.

For consumer electronics like printers or small appliances, MR72zz Bearing offers quiet and efficient movement. Its chrome steel construction provides durability, even with frequent use, making it a dependable choice for everyday gadgets.

Q&A

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