+86 15806631151 [email protected]
TFL BEARINGS
REQUEST A QUOTE
Inch Size Miniature Ball Bearings R188zz

Inch Size Miniature Ball Bearings R188zz

The R188zz is a compact inch-sized miniature ball bearing, measuring 0.25″ by 0.5″ by 0.1875″. Made from chrome steel with stainless steel shields, it’s built for radial loads and smooth rotation.

With a dynamic radial load capacity of 207 lbf, it spins efficiently at speeds up to 40,000 RPM. The shielded design keeps dirt out while maintaining easy access for lubrication.

Its ABEC1 tolerance ensures reliable performance, and the stainless steel cage adds durability. The bearing operates in temperatures from -86°F to 230°F.

Ideal for small machinery, hobby projects, or precision instruments where space is limited. Compliant with RoHS and REACH standards, it’s a practical choice for various lightweight applications.

Get A Free Quote
    Description Features Application Q&A Featured Products Our Process

Product Parameters

  • Part Number R188zz
  • Brand TFL
  • System of Measurement Inch
  • Bearing Type Ball
  • For Load Direction Radial
  • Construction Single Row
  • Inner Ring Type Standard
  • Seal Type Shielded
  • Tolerance Class ABEC1
  • Radial Clearance Trade No MC3
  • Radial Clearance 0.00008" to 0.0005"
  • Ball Qty 8
  • Bore Dia 0.25"
  • Bore Dia Tolerance -0.0003" to 0"
  • Outer Dia 0.5"
  • Outer Dia Tolerance -0.0003" to 0"
  • Width 0.1875"
  • Width Tolerance -0.005" to 0"
  • Ball Dia 0.07870"
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Stainless Steel
  • Shield Material 300 Series Stainless Steel
  • Dynamic Radial Load 207 lbf
  • Static Radial Load 80 lbf
  • Max Speed 40000 rpm
  • Temperature Range -86 to 230 °F
  • Lubrication Required
  • RoHS Compliant
  • REACH Compliant
  • Weight 2.32 g
  • Price（$） 1.035
Inch Size Miniature Ball Bearings R188zz dimension drawing
Download DWG Download PDF

Features

How Does R188zz Bearing Reduce Friction?

R188zz Bearing features a shielded design with stainless steel shields, protecting against contaminants while reducing friction.
Its chrome steel construction ensures smooth radial movement, ideal for high-speed applications up to 40,000 rpm.
The precision-engineered balls and cage maintain alignment, minimising wear and extending operational life.
With a dynamic radial load capacity of 207 lbf, it balances performance and durability in compact spaces.

Application

Key Fields for R188zz Bearing
R188zz Bearing is commonly used in small electric motors, where its shielded design keeps dust out while maintaining smooth rotation. The inch sizing makes it a great fit for American-made tools and appliances.

In robotics, R188zz Bearing works well in lightweight joints and pivots due to its compact size and reliable radial load capacity. The stainless steel cage ensures long-lasting performance even with frequent movement.

For hobbyist projects like RC cars or drones, R188zz Bearing offers precise control thanks to its ABEC1 tolerance. Its high-speed capability (up to 40,000 rpm) handles quick direction changes effortlessly.

Around the house, you’ll find R188zz Bearing in appliances like cooling fans or small power tools. The chrome steel construction resists wear from daily use, while the pre-lubrication reduces maintenance needs.

Medical devices like dental handpieces benefit from R188zz Bearing’s consistent performance and hygiene-friendly stainless steel shields. The tight radial clearance ensures vibration-free operation during delicate procedures.

Q&A

SEND INQUIRY