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Metric Size Standard Miniature Ball Bearings SMR74
Metric Size Standard Miniature Ball Bearings SMR74

Metric Size Standard Miniature Ball Bearings SMR74

The SMR74 is a compact miniature ball bearing with a 4mm bore and 7mm outer diameter, crafted entirely from stainless steel for durability. It handles radial loads up to 54 lbf and spins smoothly at speeds up to 54,000 RPM.

Its open design requires regular lubrication but allows for easy maintenance. With eight stainless steel balls, it offers reliable performance in small spaces.

This bearing is ideal for precision devices like small motors or medical instruments where space is limited. It operates well in temperatures from -30°C to 110°C.

Weighing just 0.23g, it’s lightweight yet sturdy. Compliant with RoHS and REACH standards, it’s a safe choice for various applications.

The ABEC1 tolerance ensures decent precision for general use. Its simple design makes it easy to install and replace in tight spots.

Perfect for hobby projects or industrial uses where small, reliable bearings are needed. The stainless steel construction resists corrosion, adding to its lifespan.

With a radial clearance of 0.002mm to 0.013mm, it balances smooth rotation and load handling. A practical pick for lightweight radial load applications.

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Product Parameters

  • Part Number SMR74
  • 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 mm
  • Width Tolerance -0.12mm to 0
  • Ball Qty 8
  • Ball Dia 1.0000 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 54 lbf
  • Static Radial Load 19 lbf
  • Temperature Range -30° to 110 °C
  • Lubrication Required
  • RoHS Compliant
  • REACH Compliant
  • Max Speed 54000 rpm
  • Weight 0.23 g
  • Price($) 1.242

Features

How Does SMR74 Bearing Reduce Friction?

SMR74 Bearing features stainless steel rings and balls, ensuring smooth operation with minimal friction.
Its ABEC1 tolerance class provides consistent performance, making it suitable for precision applications.
The open design allows for easy lubrication, enhancing efficiency and reducing wear.
With a maximum speed of 54,000 rpm, it delivers reliable performance in high-speed scenarios.

Built for Reliability: SMR74 Bearing

SMR74 Bearing is crafted with stainless steel components, offering durability and resistance to corrosion.
The single-row construction ensures stability, even under radial loads up to 54 lbf.
Its compact size (4 mm×7 mm×2 mm) makes it ideal for miniature applications.
The MC3 radial clearance range (0.002mm to 0.013mm) ensures smooth movement.

Why Choose SMR74 Bearing for Precision Tasks?

SMR74 Bearing’s stainless steel construction provides excellent precision and low noise operation.
With 8 balls and a dynamic radial load capacity of 54 lbf, it handles demanding tasks efficiently.
The open seal type simplifies maintenance, while the ABEC1 tolerance ensures consistent accuracy.
Its lightweight design (0.23 g) makes it perfect for compact devices.

Application

Where Is SMR74 Bearing Used?
SMR74 Bearing is commonly used in small electric motors, such as those found in drones or RC cars, where its compact size and lightweight design are ideal. The stainless steel construction ensures durability even in demanding conditions.

In medical devices like dental tools or surgical instruments, SMR74 Bearing provides smooth, precise movement thanks to its ABEC1 tolerance. Its open design allows for easy lubrication, extending the bearing’s lifespan.

For consumer electronics, SMR74 Bearing fits perfectly in devices like miniature fans or handheld gadgets, offering reliable performance. The metric dimensions make it a versatile choice for various applications.

Automation systems, such as small robotic arms, benefit from SMR74 Bearing’s high-speed capabilities and low friction. Its radial load handling makes it suitable for precise, repetitive motions.

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