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Metric Size Miniature Flanged Ball Bearings SF689 2rs

Metric Size Miniature Flanged Ball Bearings SF689 2rs

The SF689 2RS is a compact, sealed ball bearing with a 9mm bore and 17mm outer diameter, crafted entirely from stainless steel for durability. It handles radial loads up to 228 lbf and spins smoothly at speeds up to 32,400 RPM.

Its double rubber seals keep out dust and moisture, while the stainless steel cage ensures quiet, long-lasting performance. The flange design (19mm outer diameter) helps with secure mounting in tight spaces.

With a radial clearance of 0.002mm to 0.013mm, it offers precise movement for small applications. Ideal for high-speed devices like dental tools or small electric motors where space is limited.

Weighing just 4.87g, it’s lightweight yet robust. Compliant with RoHS and REACH standards, it requires lubrication for optimal performance in temperatures from -30°C to 110°C.

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Product Parameters

  • Part Number SF689 2rs
  • Brand TFL
  • System of Measurement Metric
  • Bearing Type Ball
  • Bore Dia 9 mm
  • Bore Dia Tolerance -0.008mm to 0
  • Outer Dia 17 mm
  • Outer Dia Tolerance -0.008mm to 0
  • Width 5 mm
  • Width Tolerance -0.12mm to 0
  • Flange Outer Dia 19 mm
  • Flange Thickness 1.1 mm
  • Radial Clearance 0.002mm to 0.013mm
  • Ball Qty 11
  • Ball Dia 2.000 mm
  • For Load Direction Radial
  • Construction Single Row
  • Inner Ring Type Standard
  • Seal Type Sealed
  • Tolerance Class ABEC1
  • Radial Clearance Trade No MC3
  • Ring Material Stainless Steel
  • Ball Material Stainless Steel
  • Cage Material Stainless Steel
  • Dynamic Radial Load 228 lbf
  • Static Radial Load 108 lbf
  • Max Speed 32400 rpm
  • Temperature Range -30° to 110 °C
  • Lubrication Required
  • RoHS Compliant
  • REACH Compliant
  • Weight 4.87 g
  • Shield Material Nitrile Rubber
  • Price（$） 1.62
Metric Size Miniature Flanged Ball Bearings SF689 2rs dimension drawing
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Features

How Does SF689 2rs Bearing Reduce Friction?

SF689 2rs Bearing features a sealed design with stainless steel components, ensuring smooth operation and reduced friction.

Its 11-ball configuration and MC3 radial clearance (0.002mm to 0.013mm) enhance precision and efficiency in radial load applications.

The nitrile rubber shield protects against contaminants, maintaining performance in various environments.

With a maximum speed of 32,400 rpm, it delivers reliable performance for high-speed tasks.

Application

Where Is SF689 2rs Bearing Used?
SF689 2rs Bearing is commonly used in small electric motors, such as those found in household appliances like blenders or fans. Its sealed design helps keep out dust and moisture, ensuring longer service life in everyday conditions.

In robotics, SF689 2rs Bearing provides smooth rotation for joints and small mechanisms, thanks to its stainless steel construction and low friction. The compact size makes it ideal for tight spaces in automated systems.

For medical devices, SF689 2rs Bearing’s precision and cleanliness suit applications like dental tools or diagnostic equipment. The nitrile rubber seal adds an extra layer of protection against contaminants.

In consumer electronics, SF689 2rs Bearing can be found in devices like printers or small gadgets, where reliable performance is needed without frequent maintenance. Its lightweight design doesn’t add unnecessary bulk to portable devices.

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