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Metric Size Standard Miniature Ball Bearings S691

Metric Size Standard Miniature Ball Bearings S691

The S691 is a miniature ball bearing with a compact size of 1mm×4mm×1.6mm, crafted entirely from stainless steel for durability. It handles radial loads up to 24 lbf and spins at speeds up to 90,000 RPM, making it suitable for high-speed applications.

With an open design and ABEC1 tolerance, it offers smooth operation and easy maintenance. The stainless steel cage ensures long-lasting performance, even in demanding conditions.

This bearing operates efficiently in temperatures from -30°C to 110°C. Its small size and lightweight (0.11g) make it ideal for precision devices like small motors or medical instruments.

Compliant with RoHS and REACH standards, it’s a reliable choice for environmentally conscious applications. Regular lubrication is recommended to maintain optimal performance.

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Product Parameters

  • Part Number S691
  • Brand TFL
  • Interchangeable EZO
  • Bore Dia 1 mm
  • Bore Dia Tolerance -0.008mm to 0
  • Outer Dia 4 mm
  • Outer Dia Tolerance -0.008mm to 0
  • Width 1.6 mm
  • Width Tolerance -0.12mm to 0
  • Ball Qty 5
  • Ball Dia 0.8000 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 24 lbf
  • Static Radial Load 6 lbf
  • Temperature Range -30° to 110 °C
  • Lubrication Required
  • RoHS Compliant
  • REACH Compliant
  • Max Speed 90000 rpm
  • Weight 0.11 g
  • Price（$） 16.2
Metric Size Standard Miniature Ball Bearings S691 dimension drawing
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Features

Why Choose S691 Bearing for Precision Tasks?

S691 Bearing is crafted with stainless steel rings and balls, ensuring smooth radial movement in compact applications.
Its small size of 1 mm×4 mm×1.6 mm makes it ideal for miniature devices requiring precise motion control.
The open design allows for easy lubrication, maintaining optimal performance even at high speeds of 90,000 rpm.
With a dynamic radial load capacity of 24 lbf, it balances precision and durability in delicate machinery.

Application

Common Applications of S691 Bearing
S691 Bearing is widely used in small-scale industrial equipment, such as precision instruments and miniature motors, where its compact size and radial load capacity are essential. The stainless steel construction ensures durability even in demanding environments.

Where Is S691 Bearing Used?
You’ll often find S691 Bearing in medical devices like dental tools or lab equipment, thanks to its high-speed capability and reliable performance. Its open design simplifies lubrication, making maintenance straightforward.

Ideal for Precision: S691 Bearing
S691 Bearing excels in automation systems, particularly in robotic arms and 3D printers, where its low friction and smooth operation are key. The ABEC1 tolerance ensures consistent accuracy for delicate tasks.

Automotive vs Aerospace: Applications of S691 Bearing
In automotive applications, S691 Bearing fits well in small actuators or sensors, while in aerospace, it’s used in navigation systems due to its lightweight and reliability. The metric sizing makes it versatile for global standards.

Perfect Fit for Automation: S691 Bearing
S691 Bearing is a go-to choice for consumer electronics like miniature fans or handheld devices, where space-saving design matters. Its stainless steel balls and rings resist corrosion, extending the product’s lifespan.

Q&A

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