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Deep Groove Ball Bearings
  • High Speed Open Type U groove R188 Concave Ball Bearing R188UU Inch Bearing Small Ball Bearing
  • High Speed Open Type U groove R188 Concave Ball Bearing R188UU Inch Bearing Small Ball Bearing
  • High Speed Open Type U groove R188 Concave Ball Bearing R188UU Inch Bearing Small Ball Bearing
  • High Speed Open Type U groove R188 Concave Ball Bearing R188UU Inch Bearing Small Ball Bearing
High Speed Open Type U groove R188 Concave Ball Bearing R188UU Inch Bearing Small Ball Bearing
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High Speed Open Type U groove R188 Concave Ball Bearing R188UU Inch Bearing Small Ball Bearing

  • 100 - 4999 Pieces
    $0.21
  • 5000 - 49999 Pieces
    $0.15
  • >= 50000 Pieces
    $0.14

Customization:

Customized logo（Min.Order: 50000 pieces）
Customized packaging（Min.Order: 30000 pieces）
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High Speed Open Type U groove R188 Concave Ball Bearing R188UU Inch Bearing Small Ball Bearing

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • High-Speed Rotation: Designed for precision radial and thrust load handling, enabling smooth operation in high-speed applications.
  • Open Design: Unsealed structure allows for customizable lubrication, ideal for environments where external maintenance is required.

Key features

  • 1. Material Technology

    • With high-quality bearing steel, ensure durability and corrosion resistance in harsh environments. This material offers ~20% greater longevity than standard steel bearings* in industrial applications.

  • 2. Interactive Design

    • With a steel cage design, enhance structural integrity and withstand high-speed operations compared to plastic-caged bearings*. The rigid metal cage reduces rotational vibration for smoother performance.

  • 3. Performance Parameters

    • The deep groove structure enables high-speed performance, supporting rotational speeds up to 30% faster than standard deep groove bearings*. This ensures efficiency in precision machinery and high-demand equipment.

  • 4. Scenario Solutions

    • The open sealing design suits applications requiring frequent lubrication, such as industrial machinery or automotive parts. Its universal single-row configuration adapts to diverse mechanical systems.

  • 5. Certification Standards

    • The P0 precision rating meets ISO standards for high-precision alignment, minimizing operational errors in critical applications like robotics or precision tools.

Product details

High Speed Open Type U groove R188 Concave Ball Bearing R188UU Inch Bearing Small Ball Bearing

The High Speed Open Type U groove R188 Concave Ball Bearing is engineered for precision and durability, featuring a steel cage and bearing steel construction for optimal load distribution and corrosion resistance. Designed with a deep groove structure, it supports smooth, high-speed rotation in industrial machinery, automotive components, and precision equipment. Its open sealing allows for easy lubrication while maintaining low-friction performance.

Technical specifications

FeatureSpecificationBenefit
MaterialBearing SteelHigh strength and corrosion resistance
Cage MaterialSteelEnhanced durability under high-speed use
Precision RatingP0Superior alignment and minimal play
Sealing TypeOpenSimplified maintenance and lubrication
StructureDeep GrooveSupports axial and radial loads
Row ConfigurationSingle RowCompact design for space-constrained applications

Customization guide

Adjustable parameters include size, material composition, and cage type to meet specialized needs such as increased load capacity or chemical resistance.

Get inspired

Ideal for high-speed applications like conveyor systems, robotics, and precision tools, this bearing ensures reliable performance even under continuous operation. Its open design and steel construction make it a versatile choice for environments requiring frequent maintenance.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Max Speed (rpm)3,000+15% (3,450)+30% (3,900)*
Load CapacityStandard (50 kN)Enhanced (57.5 kN)Premium (65 kN)
Corrosion ResistanceAISI 440CStainless Steel 316Super Alloy 316L

Supplier's note

  1. Technical Breakthroughs:

    • The steel cage reduces rotational friction by 20% compared to plastic alternatives, enabling higher speeds.
    • P0 precision rating ensures alignment accuracy within 0.005 mm, critical for precision machinery.
    • Open sealing allows for 30% faster lubrication access than shielded bearings, minimizing downtime.

  2. Optimal Version Selection:

    • Base Model: Suitable for standard industrial applications (e.g., fans, pumps) where cost-efficiency is prioritized.
    • Advanced Model: Ideal for automotive or robotics systems requiring enhanced load capacity and corrosion resistance in harsh environments.
    • Pro Model: Designed for high-speed, heavy-duty machinery (e.g., CNC tools) where super alloy materials and 3,900 rpm capability are essential.

With the Pro Model’s super alloy composition, you can triple the industry-standard corrosion resistance for marine or chemical processing equipment. Pair this with its 3,900 rpm speed rating to achieve seamless operation in high-demand applications.

Frequently asked questions

  • Which high speed open type bearing suits compact machinery applications?

  • How do I maintain an open-type deep groove ball bearing to prevent wear?

  • What are the benefits of bearing steel vs stainless steel for industrial bearings?

  • Can I customize the size or cage material of R188UU inch bearings?

  • Is the R188UU bearing precision-rated for high-accuracy applications?

  • Are open-type deep groove bearings suitable for high RPM environments?

  • Why choose an open-seal bearing over shielded/sealed types?

  • What makes the steel cage better than plastic in small ball bearings?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Industry Standard Deep Groove BearingGeneral industrial machineryStandard bearing steel (ASTM A29), open design (ISO 1524), precision P0 (ISO 10681)Cost-effective, widely compatible with basic applications.Limited to moderate speeds (≤ 3,000 RPM), lower precision (tolerance ±0.005mm).
Our Base Deep Groove BearingHigh-speed office equipment, automotiveAISI 52100 bearing steel (ASTM A29), steel cage (ISO 15), precision P0 (ISO 10681)High-speed stability (up to 5,000 RPM), durable material.Requires clean environments (no dust ingress), limited axial load capacity.
Our Advanced Deep Groove BearingPrecision machinery, aerospaceAISI 52100 steel (ASTM A29), steel cage (ISO 15), precision P4 (ISO 10681)▲Ultra-high precision (tolerance ±0.001mm▲), shielded design (ISO 1524)▲.Higher cost, heavier weight (15%▲ vs Base).
Angular Contact Ball BearingHigh-speed spindles, automotive suspensionsAngular contact design (ISO 15), sealed (ISO 1524), double row▲Handles combined radial/axial loads (up to 2,000 N▲), high-speed stability.Axial load direction limited, complex installation.
Cylindrical Roller BearingHeavy machinery, conveyor systemsCylindrical rollers (ISO 15), open design (ISO 1524), single row▲High radial load capacity (up to 10,000 N▲), self-aligning.Lower speed capability (≤ 2,000 RPM), higher friction.
Thrust Ball BearingGearboxes, turbinesThrust design (ISO 15), open/sealed (ISO 1524)Efficient axial load handling (up to 5,000 N▲), compact design.Minimal radial load tolerance (≤ 100 N▲), low-speed optimized.

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