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Metric Size Standard Miniature Ball Bearings S638 2rs
Metric Size Standard Miniature Ball Bearings S638 2rs

Metric Size Standard Miniature Ball Bearings S638 2rs

The S638 2RS is a compact, sealed ball bearing measuring 8mm by 28mm by 9mm, crafted entirely from stainless steel for durability. It handles radial loads up to 785 lbf and spins smoothly at speeds up to 25,200 RPM.

Its double rubber seals keep out dust and moisture, making it low-maintenance, while the stainless steel cage ensures long-lasting performance. The bearing operates well in temperatures from -30°C to 110°C.

This model is ideal for small machinery or devices where space is limited but reliability is key. Its lightweight design, at just 30.3g, makes it easy to integrate into various applications.

Compliant with RoHS and REACH standards, it’s a safe and practical choice for both industrial and precision equipment. The included lubrication ensures smooth operation right out of the box.

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Product Parameters

  • Part Number S638 2rs
  • Brand TFL
  • Interchangeable EZO
  • Bore Dia 8 mm
  • Bore Dia Tolerance -0.008mm to 0
  • Outer Dia 28 mm
  • Outer Dia Tolerance -0.008mm to 0
  • Width 9 mm
  • Width Tolerance -0.12mm to 0
  • Ball Qty 7
  • Ball Dia 4.7620 mm
  • Radial Clearance 0.002mm to 0.013mm
  • Seal Type Sealed
  • 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
  • Shield Material Nitrile Rubber
  • Dynamic Radial Load 785 lbf
  • Static Radial Load 321 lbf
  • Temperature Range -30° to 110 °C
  • Lubrication Required
  • RoHS Compliant
  • REACH Compliant
  • Max Speed 25200 rpm
  • Weight 30.3 g
  • Price($) 1.242

Features

How Does S638 2rs Bearing Reduce Friction?

S638 2rs Bearing features a sealed design with stainless steel rings and balls, minimising friction during operation.
The ABEC1 tolerance ensures smooth rotation, making it suitable for precision applications.
With a dynamic radial load capacity of 785 lbf, it handles moderate loads efficiently.
Its maximum speed of 25,200 rpm allows for high-speed performance without compromising durability.

Designed for Durability: S638 2rs Bearing

S638 2rs Bearing is constructed entirely from stainless steel, offering excellent corrosion resistance.
The nitrile rubber seals protect against dust and moisture, extending its service life.
Its compact size (8 mm×28 mm×9 mm) makes it ideal for miniature applications.
The radial clearance of 0.002mm to 0.013mm ensures smooth and quiet operation.

Performance Features of S638 2rs Bearing

S638 2rs Bearing’s single-row design with seven balls provides balanced load distribution.
The stainless steel cage maintains ball alignment, reducing wear and noise.
It operates efficiently within a temperature range of -30° to 110 °C.
With a weight of just 30.3 g, it is lightweight yet robust for its size.

Why Is S638 2rs Bearing Easy to Maintain?

S638 2rs Bearing comes pre-lubricated and sealed, requiring minimal maintenance.
The nitrile rubber shields prevent contaminants from entering, reducing the need for frequent cleaning.
Its standard inner ring design simplifies installation and replacement.
The bearing’s compliance with RoHS and REACH ensures it meets environmental standards.

Application

Common Applications of S638 2rs Bearing
S638 2rs Bearing is widely used in small electric motors, such as those found in household appliances and power tools, thanks to its compact size and sealed design. The stainless steel construction ensures durability even in damp or dusty environments.

In automation systems, S638 2rs Bearing fits well in robotic arms and conveyor belt rollers, providing smooth rotation with minimal maintenance. Its ABEC1 tolerance offers reliable performance for precision movements.

For medical devices like dental drills or lab equipment, S638 2rs Bearing’s sealed design prevents contamination while maintaining high-speed operation. The nitrile rubber shield adds an extra layer of protection against moisture and debris.

Where Is S638 2rs Bearing Used?
You’ll often spot S638 2rs Bearing in office printers and scanners, where its quiet operation and long lifespan keep devices running smoothly. The radial load capacity makes it ideal for rotating components.

In automotive applications, S638 2rs Bearing supports small gear mechanisms and dashboard instruments, offering consistent performance. The metric sizing ensures compatibility with various vehicle models.

Built for Heavy-Duty Use: S638 2rs Bearing
S638 2rs Bearing handles tough conditions in industrial fans and blowers, where its stainless steel build resists corrosion. The dynamic radial load rating ensures reliability under continuous use.

For 3D printers, S638 2rs Bearing’s precision and low friction help maintain accurate print quality. The sealed design keeps out dust, reducing wear over time.

Light-Duty vs Heavy-Duty: Best Uses for S638 2rs Bearing
In light-duty applications like cooling fans, S638 2rs Bearing provides quiet and efficient operation. For heavier tasks, such as small machinery, it balances load capacity with compact design.

The bearing’s versatility shines in both consumer electronics and industrial equipment, adapting to different speed and load requirements. Its temperature range makes it suitable for various environments.

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