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Haron Bearing Logo

Electric Motor Deep Groove Ball Bearings Manufacturer

Low-noise, low-vibration and high-speed deep groove ball bearings engineered for industrial motors, pumps, fans, compressors, servo motors and OEM electric drive systems.

Low Noise & Low Vibration CM / C3 Clearance Options 2RS / ZZ / Open Designs OEM Motor Bearing Supply

Engineering Note: Electric motor deep groove ball bearings are precision radial ball bearings designed to support high-speed motor shafts with low friction, stable clearance, low noise and long grease life.

Electric motor deep groove ball bearings for low noise motors

Quick Engineering Overview for Motor Bearing Buyers

Haron Precision Motor Bearing

Bearing Type

Single row deep groove ball bearings for radial loads and moderate axial loads in electric motors.

Main Series

6000, 6200, 6300, 6800, 6900 series and custom motor bearing sizes.

Clearance Options

CN, CM, C2, C3 and custom clearance for different motor shaft fits and operating temperatures.

Need help matching a motor bearing code?

Electric Motor Deep Groove Ball Bearing Specifications

Engineering specifications for deep groove ball bearings
Product Name
Electric Motor Deep Groove Ball Bearings
Bearing Type
Single Row Deep Groove Ball Bearing
Common Series
608, 6000, 6200, 6300, 6800, 6900 Series
Material Options
GCr15 / SAE 52100 Chrome Steel, Stainless Steel 440C / 304 / 316, Hybrid Ceramic Si3N4 Balls
Precision Grades
P0, P6, P5, P4, P2 Custom Options
Clearance
CN, CM, C2, C3, C4, Custom Clearance
Sealing Type
Open, ZZ, 2RS, Non-contact Seal, Light-contact Seal
Noise / Vibration
Z1V1, Z2V2, Z3V3, Z4V4 Upon Request
Cage Options
Pressed Steel Cage, Nylon Cage, Brass Cage Custom
Lubrication
Low-noise Grease, High-speed Grease, High-temperature Grease, Long-life Motor Grease
Applications
Industrial Motors, Pumps, Fans, Compressors, Servo Motors, Household Appliances, Power Tools, Generators, VFD Motors
Lead Time
4–8 Weeks

* Final bearing selection should be confirmed according to motor speed, load, shaft fit, housing fit, temperature, sealing environment and noise requirement.

Electric Motor Bearing Types We Supply

ZZ shielded deep groove ball bearing

ZZ Shielded Motor Bearings

Metal shields help retain grease and protect against large particles while keeping lower friction for high-speed motor operation.

Key Advantages

  • Non-contact metal shields ensure ultra-low rotational friction.
  • Pre-lubricated with premium grease for maintenance-free lifespan.
  • Ideal for clean environments and high-speed electric motors.
2RS sealed deep groove ball bearing for electric motor

2RS Sealed Motor Bearings

Rubber seals provide stronger protection against dust, moisture and grease leakage for fans, pumps, appliances and compact motors.

Key Advantages

  • Contact rubber seals (NBR) deliver maximum contaminant protection.
  • Exceptional moisture and dust resistance for harsh environments.
  • Extended service life in demanding home appliance and pump systems.
Open deep groove ball bearing

Open Electric Motor Bearings

Open bearings are suitable for oil lubrication, controlled clean environments and applications requiring very low friction.

Key Advantages

  • Unrestricted oil flow allows for optimal cooling and lubrication.
  • Provides the lowest possible rotational friction among ball bearing types.
  • Perfect integration for enclosed gearboxes and internal motor mechanisms.
Low noise EMQ motor bearings testing

Low Noise EMQ Bearings

Designed for quiet running motors with controlled raceway finish, ball quality, grease selection and vibration inspection.

Key Advantages

  • Electric Motor Quality (EMQ) standard ensures minimal vibration (V2/V3/V4 grades).
  • Super-finished raceways guarantee exceptionally quiet operation.
  • Specially formulated low-noise grease reduces acoustic emissions significantly.
High speed motor bearings application

High Speed Motor Bearings

For motors requiring higher rotational speed, lower torque and stable thermal performance.

Key Advantages

  • Optimized internal geometry handles extreme centrifugal forces with ease.
  • Precision-machined cages (steel, brass, or polyamide) ensure rotational stability.
  • Superior heat dissipation characteristics during continuous high-speed runs.
Hybrid ceramic insulated motor bearings for VFD

Hybrid Ceramic / Insulated

Recommended for inverter-driven motors and VFD applications where electrical erosion or stray current may shorten bearing life.

Key Advantages

  • Silicon Nitride (Si3N4) ceramic balls provide natural electrical insulation.
  • Effectively prevents electrical fluting and premature failure in VFD motors.
  • Lower density balls reduce centrifugal loads, extending grease and overall life.

Bearing Solutions for Different Electric Motor Applications

General Industrial Motors

Use For: Three-phase motors, pumps, blowers, compressors

Recommended: 6200 / 6300 series, ZZ or 2RS, CM or C3 clearance

Servo & Precision Motors

Use For: Automation, robotics, encoders, stepper motors

Recommended: P6 / P5 precision, low runout, low vibration, low torque grease

Household Appliance Motors

Use For: Fans, washing machines, vacuum cleaners, small motors

Recommended: Low noise Z3V3 / Z4V4, 2RS or ZZ, quiet grease

Power Tools & High-speed

Use For: Power tools, compact drives, high-speed shafts

Recommended: 6000 / 6800 / 6900 series, low friction sealing, high-speed grease

VFD / Inverter Motors

Use For: Variable-frequency drives, traction motors

Recommended: Hybrid ceramic or insulated options, electrical erosion protection

Generators & Continuous-duty

Use For: Generators, ventilation systems, continuous-running

Recommended: Long-life grease, stable clearance, high load capacity

Not sure which bearing fits your motor?

Common Motor Bearing Problems We Help You Solve

Motor bearing failure analysis

Motor noise complaints after assembly

Use low-noise bearing grades, super-finished raceways, high-grade balls and suitable quiet grease.

Bearing overheating at high speed

Match clearance, grease type, cage material, seal friction and shaft/housing fit.

Premature failure caused by contamination

Choose 2RS, ZZ or special sealing based on dust, moisture and operating environment.

Vibration affects motor efficiency

Control raceway finish, ball precision, radial clearance and 100% vibration inspection.

Electrical erosion in inverter-driven motors

Use hybrid ceramic or insulated bearing solutions for VFD and stray-current applications.

Inconsistent quality between batches

Use factory-controlled production, dimensional inspection, noise testing and batch traceability.

Why Choose Haron for Electric Motor Deep Groove Ball Bearings?

Engineer checking motor bearing drawing

Motor-focused Bearing Selection

We help customers match bearing series, clearance, seal type, grease and precision grade according to actual motor speed, load, temperature and noise target.

Bearing noise and vibration detection equipment

Low Noise & Low Vibration Control

Haron supports Z/V noise and vibration requirements through controlled grinding, super-finishing, ball quality inspection and final testing.

Bearing clearance test diagram

CM / C3 Clearance Support

Different motor fits and thermal conditions require different internal clearance. Haron provides CN, CM, C2, C3 and custom clearance options.

Different seal types of bearings compared

Reliable Sealing & Grease Options

Choose Open, ZZ, 2RS, non-contact or light-contact seals with low-noise, high-speed, high-temperature or long-life grease.

OEM bearing packaging and drawing customization

OEM / ODM Manufacturing Capability

Haron supports standard motor bearing replacement, OEM private label packaging, drawing-based customization and non-standard bearing development.

Bearing inspection report and testing instruments

Inspection Reports for B2B Orders

Dimensional inspection, noise test, vibration test, radial clearance test, runout test and packaging inspection can be provided according to project requirements.

What Are Electric Motor Deep Groove Ball Bearings?

Electric motor deep groove ball bearings are precision radial ball bearings used to support motor shafts and rotor rotation. They are designed for high-speed operation, low friction, low noise, low vibration and long service life. Compared with general-purpose bearings, motor bearing selection pays more attention to internal clearance, raceway finish, grease performance, sealing friction and noise grade.

Best For:

High-speed motor shafts requiring smooth rotation, stable clearance, low torque and quiet operation.

Structure of electric motor deep groove ball bearing
Outer Ring Inner Ring Steel / Ceramic Balls Cage Grease Seal or Shield Raceway

EMQ Deep Groove Ball Bearings vs Standard Deep Groove Ball Bearings

Standard Deep Groove Ball Bearings

  • General industrial use
  • Basic dimensional accuracy
  • Standard noise level
  • Standard grease
  • Suitable for normal rotating equipment
  • Less focus on NVH
Recommended for Motors

EMQ Electric Motor Bearings

  • Designed for electric motor shafts
  • Lower noise and vibration target
  • More controlled radial clearance
  • Better raceway finish and ball quality
  • Motor-specific grease options
  • Suitable for continuous running and high-speed motor applications

Note: EMQ is not a single universal international standard. Buyers should compare actual specifications such as precision grade, noise/vibration level, clearance, grease type, testing method and inspection report.

2RS vs ZZ vs Open Bearings: Which Is Better for Your Motor?

2RS rubber sealed bearing

2RS Sealed

Best For: Dust, moisture, grease retention, appliances, pumps, small motors

Advantages: Better contamination protection

Consider: Higher seal contact friction than open or shielded designs

ZZ metal shielded bearing

ZZ Shielded

Best For: High-speed motors, lower friction, dust protection, general industrial motors

Advantages: Good grease retention and lower friction

Consider: Less sealing protection than rubber seals

Open type bearing

Open

Best For: Clean systems, oil lubrication, high-speed applications with external lubrication control

Advantages: Lowest friction and easy lubrication

Consider: Requires external sealing or clean environment

Need help choosing 2RS, ZZ or Open?

CM vs C3 Clearance: How to Select Internal Clearance for Electric Motors?

Internal clearance affects motor noise, heat generation, lubricant film, shaft fit and bearing life. For electric motors, CM and C3 clearance are frequently considered depending on shaft fit, housing fit, operating temperature and speed.

CN: Normal clearance for general applications.
CM: Motor-oriented clearance band used when smoother running, lower noise and stable operation are required.
C3: Greater than normal clearance, often considered when thermal expansion, tighter fits or higher operating temperatures reduce internal clearance during operation.
C2: Smaller than normal clearance, only for specific fit and noise-sensitive conditions after engineering confirmation.
Warning: Do not choose clearance only by bearing code. Confirm motor speed, load, shaft tolerance, housing tolerance, temperature rise and lubrication before final selection.
Radial internal clearance diagram for motor bearings

How to Choose the Right Deep Groove Ball Bearing for Your Electric Motor

Step 1: Confirm motor type

Examples: Industrial motor, servo motor, fan motor, pump motor, generator, VFD motor

Step 2: Confirm bearing size or code

Examples: 6202, 6203, 6205, 6306, 608, 6000, 6800 series

Step 3: Confirm speed and load

Check radial load, axial load, RPM and duty cycle.

Step 4: Confirm noise requirement

Choose standard, Z2V2, Z3V3 or Z4V4 according to motor noise target.

Step 5: Choose clearance

CN, CM, C2, C3 or custom clearance based on fit and temperature.

Step 6: Choose seal type

Open, ZZ, 2RS, non-contact or light-contact seal.

Step 7: Choose grease

Low-noise grease, high-speed grease, high-temperature grease or long-life motor grease.

Step 8: Confirm inspection and packaging

Request noise test, vibration test, clearance test, runout test, grease fill confirmation and export packaging.

Send us your bearing code, motor speed, load and working temperature. Haron will help confirm a suitable bearing option.

Inspection Process for Electric Motor Bearing Orders

  1. 1 Material Inspection
  2. 2 Raceway Grinding & Super-finishing Control
  3. 3 Dimensional Inspection
  4. 4 Radial Clearance Testing
  5. 5 Noise & Vibration Testing
  6. 6 Grease Fill Check
  7. 7 Rotation Torque Check
  8. 8 Final Appearance & Packaging Inspection
Motor bearing quality inspection equipment

Inspection Report Available Upon Request

Bore / OD / Width
Radial Internal Clearance
Runout
Noise Level
Vibration Level
Grease Fill
Surface Finish
Seal Appearance
Packaging Check
Industrial bearing export packaging and pallets

Export Packaging for OEM Motor Bearing Supply

Haron supports industrial bulk packaging, individual box packaging, plastic tube packaging, VCI anti-rust protection, carton + pallet packaging and customer private label packaging according to order requirements.

Packaging Options:

  • Industrial Bulk Pack
  • Single Box Pack
  • Plastic Tube Pack
  • VCI Anti-rust Paper
  • Carton + Pallet
  • OEM Private Label
Typical Lead Time: 4–8 Weeks

Related Deep Groove Ball Bearing Solutions

Deep Groove Ball Bearings

Explore Haron’s full deep groove ball bearing range.

Single Row Deep Groove Ball Bearings

Standard single row design for high-speed industrial applications.

Low Noise Deep Groove Ball Bearings

For quiet motors, fans, appliances and precision equipment.

2RS Deep Groove Ball Bearings

Rubber-sealed bearings for contamination protection.

ZZ Deep Groove Ball Bearings

Metal-shielded bearings for grease retention and lower friction.

 6000 Series 6200 Series 6300 Series

FAQ About Electric Motor Deep Groove Ball Bearings

What are electric motor deep groove ball bearings?
They are precision deep groove ball bearings used to support motor shafts with low friction, low noise, low vibration and stable high-speed rotation.
What bearing series are commonly used in electric motors?
Common series include 608, 6000, 6200, 6300, 6800 and 6900 series, depending on shaft size, speed, load and motor design.
Are 2RS or ZZ bearings better for electric motors?
2RS bearings offer better sealing against dust and moisture, while ZZ bearings usually provide lower friction and are suitable for many high-speed motor applications. The final choice depends on environment, speed and lubrication requirements.
What does CM clearance mean in motor bearings?
CM clearance is a motor-oriented internal clearance range designed to support smoother running and noise control in electric motor applications.
When should C3 clearance be used?
C3 clearance may be used when tighter fits, higher temperatures or thermal expansion reduce internal clearance during motor operation.
What is EMQ bearing quality?
EMQ generally refers to electric motor quality bearings designed for lower noise, lower vibration, smoother rotation and longer service life. Since EMQ is not a single universal standard, buyers should compare actual specifications and testing methods.
Can Haron supply low-noise electric motor bearings?
Yes. Haron can support low-noise and low-vibration bearing requirements with suitable precision grades, clearance control, grease selection and inspection.
Can Haron customize bearings for OEM electric motors?
Yes. Haron supports OEM and ODM projects, drawing-based customization, custom clearance, seal type, grease, packaging and inspection requirements.
What information should I provide for bearing selection?
Please provide bearing code, motor type, speed, load, shaft and housing fit, working temperature, sealing environment, noise requirement and annual quantity.
What is the typical lead time?
Typical lead time is 4–8 weeks, depending on model, quantity, material, precision grade and customization requirements.