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Inch Size Miniature Ball Bearings SR144 2rs
Inch Size Miniature Ball Bearings SR144 2rs

Inch Size Miniature Ball Bearings SR144 2rs

The SR144 2RS is a compact miniature ball bearing with a 0.125″ bore and 0.25″ outer diameter, crafted entirely from stainless steel for durability. It supports radial loads up to 49 lbf and can spin at speeds up to 60,300 RPM, making it suitable for high-speed applications.

Sealed with nitrile rubber, this bearing keeps out dust and moisture while retaining lubrication. Its ABEC1 tolerance ensures reliable performance without needing frequent adjustments.

With a lightweight design at just 0.4g, it’s ideal for small devices like drones, medical instruments, or precision tools. The bearing operates smoothly in temperatures from -86°F to 230°F.

Compliant with RoHS and REACH standards, it’s a safe choice for various industries. The sealed design reduces maintenance, though occasional lubrication is recommended for optimal longevity.

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Product Parameters

  • Part Number SR144 2rs
  • Brand TFL
  • System of Measurement Inch
  • Bearing Type Ball
  • For Load Direction Radial
  • Construction Single Row
  • Inner Ring Type Standard
  • Seal Type Sealed
  • Tolerance Class ABEC1
  • Radial Clearance Trade No MC3
  • Radial Clearance 0.00008" to 0.0005"
  • Ball Qty 7
  • Bore Dia 0.125"
  • Bore Dia Tolerance -0.0003" to 0"
  • Outer Dia 0.25"
  • Outer Dia Tolerance -0.0003" to 0"
  • Width 0.1094"
  • Width Tolerance -0.005" to 0"
  • Ball Dia 0.03941"
  • Ring Material Stainless Steel
  • Ball Material Stainless Steel
  • Cage Material Stainless Steel
  • Shield Material Nitrile Rubber
  • Dynamic Radial Load 49 lbf
  • Static Radial Load 15 lbf
  • Max Speed 60300 rpm
  • Temperature Range -86 to 230 °F
  • Lubrication Required
  • RoHS Compliant
  • REACH Compliant
  • Weight 0.4 g
  • Price($) 1.242

Features

Why Choose SR144 2rs Bearing for Precision Tasks?

SR144 2rs Bearing is crafted with stainless steel rings and balls, ensuring precise radial load handling.
Its compact size of 0.125″×0.25″×0.1094″ makes it ideal for miniature applications requiring accuracy.

The sealed design with nitrile rubber shields protects against contaminants, enhancing reliability.
With a dynamic radial load capacity of 49 lbf, it delivers consistent performance in tight spaces.

SR144 2rs Bearing operates smoothly at speeds up to 60,300 rpm, balancing speed and durability.
Its ABEC1 tolerance and MC3 radial clearance ensure reliable precision in demanding conditions.

Application

Common Applications of SR144 2rs Bearing
SR144 2rs Bearing is widely used in small electric motors, such as those found in drones or RC cars, where its compact size and sealed design prevent dust ingress. The stainless steel construction ensures longevity even in humid conditions.

In medical devices like handheld surgical tools, SR144 2rs Bearing offers smooth rotation thanks to its precision ABEC1 rating. The nitrile rubber seals also help maintain cleanliness in sterile environments.

For consumer electronics, SR144 2rs Bearing is a reliable choice for cooling fans in laptops or gaming consoles. Its low friction and high-speed capability (up to 60,300 rpm) make it ideal for prolonged use without overheating.

Where Is SR144 2rs Bearing Used?
You’ll often spot SR144 2rs Bearing in 3D printers, particularly in the extruder assembly where precise movement is key. The sealed design keeps lubricant in and debris out, reducing maintenance needs.

In industrial automation, SR144 2rs Bearing supports small conveyor belts or sorting mechanisms. Its stainless steel balls and rings resist corrosion, even in washdown environments.

Built for Heavy-Duty Use: SR144 2rs Bearing
Despite its miniature size, SR144 2rs Bearing handles radial loads up to 49 lbf in applications like dental drills or precision scales. The MC3 clearance ensures consistent performance across temperature fluctuations.

For hobbyists building custom robotics, SR144 2rs Bearing’s 0.125″ bore fits standard micro shafts perfectly. The lightweight design (just 0.4g) won’t burden delicate mechanisms.

Light-Duty vs Heavy-Duty: Best Uses for SR144 2rs Bearing
In light-duty applications like model train axles, SR144 2rs Bearing provides silent operation and minimal wear. For heavier tasks like small pump impellers, its dynamic load capacity delivers reliable service life.

The bearing’s -86°F to 230°F range makes it versatile for outdoor gear too, from fishing reels to weather station components. Just remember to relubricate periodically for optimal performance.

Q&A

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