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Metric Size Standard Miniature Ball Bearings S684
Metric Size Standard Miniature Ball Bearings S684

Metric Size Standard Miniature Ball Bearings S684

The S684 is a compact miniature ball bearing, measuring just 4mm by 9mm by 2.5mm, crafted entirely from stainless steel for durability. It handles radial loads up to 110 lbf and spins smoothly at speeds up to 47,700 RPM.

Its open design simplifies lubrication, while the stainless steel cage ensures reliable performance. With a radial clearance of 0.002mm to 0.013mm, it offers smooth operation for precision applications.

This bearing is ideal for small devices like dental tools or miniature motors where space is limited. It operates efficiently in temperatures from -30°C to 110°C.

Weighing only 0.65g, it’s lightweight yet robust. Compliant with RoHS and REACH standards, it’s a safe choice for various industries.

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Product Parameters

  • Part Number S684
  • Brand TFL
  • Interchangeable EZO
  • Bore Dia 4 mm
  • Bore Dia Tolerance -0.008mm to 0
  • Outer Dia 9 mm
  • Outer Dia Tolerance -0.008mm to 0
  • Width 2.5 mm
  • Width Tolerance -0.12mm to 0
  • Ball Qty 7
  • Ball Dia 1.5880 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 110 lbf
  • Static Radial Load 37 lbf
  • Temperature Range -30° to 110 °C
  • Lubrication Required
  • RoHS Compliant
  • REACH Compliant
  • Max Speed 47700 rpm
  • Weight 0.65 g
  • Price($) 1.242

Features

Why Choose S684 Bearing for Precision Tasks?

S684 Bearing is crafted with stainless steel rings and balls, ensuring smooth and precise radial movement.
Its compact size of 4 mm×9 mm×2.5 mm makes it ideal for miniature applications requiring accuracy.
The ABEC1 tolerance class guarantees consistent performance, while the open design simplifies lubrication.
With a maximum speed of 47,700 rpm, it delivers reliable operation in high-speed scenarios.

How Is S684 Bearing Engineered for Reliability?

S684 Bearing features a stainless steel cage, maintaining ball alignment for reduced wear and tear.
Its dynamic radial load capacity of 110 lbf ensures durability in various radial load applications.
The MC3 radial clearance range (0.002mm to 0.013mm) allows for smooth operation under different conditions.
Designed for temperatures from -30° to 110 °C, it performs reliably in diverse environments.

Built for Efficiency: S684 Bearing

S684 Bearing’s single-row construction and standard inner ring provide straightforward installation.
The stainless steel materials resist corrosion, extending the bearing’s service life.
With a static radial load of 37 lbf, it handles light loads efficiently.
Its lightweight design at 0.65 g minimises energy loss in high-speed applications.

Steel vs Ceramic Bearings: Strengths of S684 Bearing

S684 Bearing uses stainless steel for all components, offering excellent corrosion resistance.
The material choice ensures durability and consistent performance in humid or dusty environments.
Its 7-ball design distributes loads evenly, reducing friction and noise.
The required lubrication ensures smooth operation, enhancing the bearing’s longevity.

Application

Common Applications of S684 Bearing
S684 Bearing is widely used in small electric motors, such as those found in cooling fans or handheld devices, thanks to its compact size and smooth operation. The stainless steel construction ensures it performs well in environments where corrosion resistance is needed.

Industrial Uses of S684 Bearing
In precision instruments like optical encoders or small gearboxes, S684 Bearing provides reliable radial load support. Its ABEC1 tolerance makes it suitable for applications where moderate precision is sufficient.

Where Is S684 Bearing Used?
You’ll often find S684 Bearing in miniature machinery, such as model trains or small robotics, due to its lightweight and durability. The open design allows for easy lubrication, extending its service life.

Perfect Fit for Automation: S684 Bearing
S684 Bearing works well in automated systems like 3D printers, where consistent movement is key. The stainless steel balls and rings help maintain performance even with frequent use.

Medical vs Industrial: Where S684 Bearing Excels
In medical devices like dental tools or lab equipment, S684 Bearing offers quiet and precise rotation. For industrial uses, it’s a cost-effective choice for light-load applications like conveyor guides.

Q&A

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