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Metric Size Standard Miniature Ball Bearings MR74zz

Metric Size Standard Miniature Ball Bearings MR74zz

The MR74zz is a compact miniature ball bearing, measuring just 4mm by 7mm by 2.5mm, making it ideal for tight spaces. Its chrome steel construction ensures durability while handling radial loads up to 49 lbf.

With shielded design, it keeps dust out and spins smoothly at speeds up to 60,000 RPM. The stainless steel cage adds strength, and it operates in temperatures from -30°C to 110°C.

This bearing is perfect for small devices like drones or precision instruments where space is limited. Its lightweight design at 0.33g doesn’t compromise on performance.

Compliant with RoHS and REACH standards, it’s a reliable choice for various applications. Regular lubrication will help maintain its smooth operation over time.

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Product Parameters

  • Part Number MR74zz
  • Brand TFL
  • Interchangeable EZO
  • Bore Dia 4 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 11
  • Ball Dia 0.8000 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 49 lbf
  • Static Radial Load 19 lbf
  • Temperature Range -30° to 110 °C
  • Lubrication Required
  • RoHS Compliant
  • REACH Compliant
  • Max Speed 60000 rpm
  • Weight 0.33 g
  • Price（$） 1.035
Metric Size Standard Miniature Ball Bearings MR74zz dimension drawing
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Features

How Does MR74zz Bearing Reduce Friction?

MR74zz Bearing features a precision-engineered chrome steel construction, ensuring smooth operation with minimal friction.
Its shielded design protects against contaminants while maintaining low resistance for high-speed applications.

With 11 chrome steel balls and a stainless steel cage, MR74zz Bearing offers reliable radial load support.
The ABEC1 tolerance class ensures consistent performance, making it suitable for miniature applications.

MR74zz Bearing operates efficiently at speeds up to 60,000 rpm, thanks to its balanced design.
Its compact 4 mm×7 mm×2.5 mm size makes it ideal for space-constrained installations.

The shielded stainless steel design helps keep lubrication in place, reducing maintenance needs.
MR74zz Bearing’s temperature range of -30° to 110 °C ensures versatility in various environments.

Application

Common Applications of MR74zz Bearing
MR74zz Bearing is widely 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 contaminants out, extending its lifespan in everyday use.

In automation systems, MR74zz Bearing works well in miniature robotic arms or precision-guided mechanisms where smooth rotation is essential. Its ABEC1 tolerance ensures consistent operation without unnecessary friction.

For consumer electronics like printers or small appliances, MR74zz Bearing provides quiet and efficient movement. The chrome steel construction offers durability even with frequent use, making it a cost-effective solution.

Medical devices such as dental tools or lab equipment benefit from MR74zz Bearing’s precise radial load handling. The stainless steel cage adds corrosion resistance, ideal for environments requiring frequent sterilization.

DIY enthusiasts often choose MR74zz Bearing for hobby projects like model cars or drones. Its lightweight design and high-speed capability make it versatile for creative applications.

Q&A

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