Metric Size Miniature Flanged Ball Bearings SF688

The SF688 is a small, single-row ball bearing with an 8mm bore and 16mm outer diameter, crafted entirely from stainless steel for durability. It handles radial loads up to 216 lbf and spins at speeds up to 32,400 RPM, making it suitable for high-speed applications.

With a lightweight design at just 3.53g, it features an open seal for easy lubrication and maintenance. The flange adds stability, helping it stay securely in place during operation.

This bearing works well in temperatures from -30°C to 110°C and meets RoHS and REACH standards. Ideal for small machinery, precision instruments, or hobbyist projects where reliability and speed are key.

Its ABEC1 tolerance and MC3 radial clearance ensure smooth performance without excessive friction. A practical choice for both industrial and light-duty uses.

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Description

Features

Application

Q&A

Product Parameters

Part Number SF688
Brand TFL
System of Measurement Metric
Bearing Type Ball
Bore Dia 8 mm
Bore Dia Tolerance -0.008mm to 0
Outer Dia 16 mm
Outer Dia Tolerance -0.008mm to 0
Width 4 mm
Width Tolerance -0.12mm to 0
Flange Outer Dia 18 mm
Flange Thickness 1 mm
Radial Clearance 0.002mm to 0.013mm
Ball Qty 10
Ball Dia 2.0000 mm
For Load Direction Radial
Construction Single Row
Inner Ring Type Standard
Seal Type Open
Tolerance Class ABEC1
Radial Clearance Trade No MC3
Ring Material Stainless Steel
Ball Material Stainless Steel
Cage Material Stainless Steel
Dynamic Radial Load 216 lbf
Static Radial Load 96 lbf
Max Speed 32400 rpm
Temperature Range -30° to 110 °C
Lubrication Required
RoHS Compliant
REACH Compliant
Weight 3.53 g
Price（$） 1.62

Metric Size Miniature Flanged Ball Bearings SF688 dimension drawing

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Features

Why Choose SF688 Bearing for Precision Tasks?

SF688 Bearing is crafted with stainless steel rings and balls, ensuring smooth radial load handling.
Its dynamic radial load capacity of 216 lbf makes it suitable for precise, high-speed applications.

The open design and ABEC1 tolerance class provide reliable performance with minimal friction.
With a maximum speed of 32,400 rpm, SF688 Bearing balances precision and durability.

Stainless steel construction resists corrosion, extending its service life in various environments.
The compact 4 mm width and lightweight design make it ideal for space-constrained applications.

Application

Common Applications of SF688 Bearing
SF688 Bearing is widely used in small electric motors, such as those found in cooling fans and household appliances. Its compact size and stainless steel construction make it suitable for environments where corrosion resistance is important.

In robotics, SF688 Bearing provides smooth rotation for lightweight robotic arms and small automated systems. The high-speed capability ensures reliable performance in repetitive motion tasks.

For medical devices like dental tools, SF688 Bearing offers precise movement due to its low radial clearance. The open design allows for easy cleaning and maintenance in sterile environments.

SF688 Bearing also works well in consumer electronics, such as computer cooling fans and small printers. Its lightweight design helps maintain efficiency without adding bulk to the device.