RW188zz

RW Series Extended Inner Ring Miniature Bearings

RW188zz RW Series Extended Inner Ring Miniature Bearings
RW188zz RW Series Extended Inner Ring Miniature Bearings

Image may differ from product. See technical specification for details.

Part No.
Part No. RW188zz

Basic Information

Bearing type Ball
System of measurement Inch
Construction Single Row
Weight 2.32 g
Tolerance class ABEC1
Seal type Shielded
For load direction Radial

Main Dimensions

Bore diameter 0.25"
Bore diameter tolerance -0.0003" to 0"
Outside diameter 0.5"
Outside diameter tolerance -0.0003" to 0"
Width 0.1875"
Width tolerance -0.005" to 0"

Inner Ring Dimensions

Inner ring type Extended
Inner ring width 0.2188"
Shoulder diameter inner ring 0.33"

Ball & Washer Dimensions

Ball diameter 0.0787"
Ball quantity 8

Performance

Temperature range -86 to 230 °F
Radial dynamic load rating 207 lbf
Radial static load rating 80 lbf
Limiting speed 40 X 1000 rpm
Lubrication Required
Radial internal clearance MC3
Radial internal clearance 0.00008" to 0.0005"

Materials

Ring material Chrome Steel
Ball material Chrome Steel
Cage material Stainless Steel
Shield material 300 Series Stainless Steel

Environment & Compliance

REACH Compliant
ROHS Compliant
Technical Drawings No drawings available at the moment, will be launched soon
Price: $ 2.89 / each
In Stock
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RW188zz Bearing Product Overview & Core Advantages

The RW188zz is a single row deep groove ball bearing designed for high-performance applications requiring reliable radial load capacity and smooth operation. Manufactured to ABEC1 precision tolerances, this inch-series bearing features a compact design with an extended inner ring for simplified mounting and secure axial location. Its 300 Series stainless steel shields provide effective contamination protection, making it a robust choice for various industrial and precision equipment.

RW188zz Bearing Model Code Explained, Specifications & Naming Convention

  • RW188: Basic bearing designation/size code
  • zz: Identifies the bearing as having shielded seals on both sides for contaminant exclusion

RW188zz Bearing Structural Features & Performance Benefits

This bearing's performance stems from its optimized construction. The single row deep groove raceway and 8 high-precision chrome steel balls ensure smooth rotation and efficient radial load handling. The stainless steel cage provides stability at the specified limiting speed of 40,000 rpm. The extended inner ring facilitates easier installation and positioning. With a radial dynamic load rating of 207 lbf and a wide operating temperature range from -86 to 230 °F, it delivers reliable performance in demanding conditions. The standard MC3 radial internal clearance (0.00008" to 0.0005") makes it suitable for most general applications.

RW188zz Bearing Typical Application Areas

This bearing is ideally suited for:

  • Small precision motors and spindles
  • Medical and dental handpieces
  • Optical encoders and instrumentation
  • Office automation equipment
  • Small gearboxes and power tools

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