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6001 Bearing 12x28x8mm | RHD Bearings

Like a good intern - 12mm bore of enthusiasm ready to take on whatever spinning chaos you throw at it.

Meet the 6001: With 519kg (5.1kN) of engineering excellence and 12mm precision, this bearing delivers the perfect blend of personality and performance for your critical applications. The most widely used bearing in electronics, small motors, and precision instruments.

12mm
Bore Diameter
28mm
Outer Diameter
8mm
Width
5.1 kN
Load Rating
519 Kg
Load Capacity
0.022 Kg
Weight
Technical Specifications Applications 📞 Call +91-9702081858
6001 Bearing 12×28×8mm - RHD Bearings

6001 BEARING SPECIFICATIONS

Precision-engineered for reliability and performance

🔍 Common Search Terms

12mm bearing electric motor applications 6001 bearing load capacity specifications small bearing 12x28x8 dimensions electric tool bearing 12mm precision bearing Mumbai supplier small appliance bearing 12mm shaft

📏Dimensions

d - ID (Bore Diameter)
12mm
D - OD (Outer Diameter)
28mm
B - Width
8mm
d₁ - Shoulder Diameter
≈17.0mm
D₂ - Recess Diameter
≈24.72mm
r₁,₂ - Chamfer Radius
min. 0.3mm
6001 Bearing: 12 × 28 × 8mm

Cross-Sectional View

6001 deep groove ball bearing technical drawing showing cross-sectional view, dimensions and specifications

⚡Load Ratings

Dynamic Load (Cr) 5.1kN
Static Load (Cor) 2.38kN
Load Capacity (kN) 5.1kN
Load Capacity (kg) 519kg

💡What This Means

Dynamic Load (5.1kN): Maximum force while rotating. Exceeding this causes rapid wear and failure within hours.
Static Load (2.38kN): Maximum force when stationary. Use 80% for safety.
Calculate Your Load: Measure shaft forces, belt tensions, or gear loads. Include shock/vibration factors.
Failure Warning: Overloading causes bearing raceways to crack and balls to flatten permanently.

🔄Speed Limits

Grease Lubrication 20000 RPM
Oil Lubrication 26000 RPM
RHD Z2V2 Bearings 1400 RPM
RHD Z3V3 Bearings 2880 RPM
RHD Z4V4 Bearings 6000+ RPM

💡What This Means

Grease Limit (20000 RPM): Heat generation increases exponentially above this. Grease breaks down, causing seizure.
Oil Advantage (26000 RPM): Better heat dissipation allows higher speed. Required for high-speed spindles.
Safe Operating Speed: Use 90% of limit (18000 RPM) for maximum L10 life of 10,000+ hours.
Failure Mode: Exceeding speed causes cage failure, ball skidding, and catastrophic overheating within minutes.

🔧Material & Quality

Steel Grade SAE52100
Ball Grade G10
Carbon Content 0.95-1.05%
Chromium Content 1.40-1.65%
ISO Standard 15:2011 Compliant

💡What This Means

SAE52100 Chrome Steel: Premium bearing steel - harder than tool steel
G10 Balls: Ultra-precision balls with ±0.25µm tolerance
High Carbon: Superior hardness and wear resistance
Chromium: Adds corrosion resistance and toughness
ISO Standard: Fits any 6001 application worldwide

📊Vibration Classes

V2 Grade
Low: 90 μm/s
Med: 60 μm/s
High: 50 μm/s
V3 Grade
Low: 55 μm/s
Med: 35 μm/s
High: 30 μm/s
V4 Grade
Low: 45 μm/s
Med: 14 μm/s
High: 15 μm/s

💡What This Means

V2 Grade: Standard grade - good for general applications
V3 Grade: Low vibration - like a smooth car engine
V4 Grade: Ultra-smooth - for precision instruments
Frequency Bands: Measured across different rotation speeds

🔇Noise Levels

Z2 Grade < 39 dB
Z3 Grade < 34 dB
Z4 Grade (Quiet) < 29 dB
Application Precision Equipment

💡What This Means

Z2 Grade: Quiet as a library - good for most applications
Z3 Grade: Very quiet - like a whisper (40 dB = normal whisper)
Z4 Grade: Ultra-quiet - perfect for bedroom fans, medical equipment
Application: Ideal for sensitive environments

⚙️Internal Clearance

C2 (Tight) 0-9 μm
C0 (Normal) 3-18 μm
C3 (Loose) 11-25 μm
C4 (High Temp) 18-33 μm
C5 (Extra High Temp) 25-45 μm

💡What This Means

C2 (Tight): Precision applications - less play, more accurate
C0 (Normal): Standard choice - works for most applications
C3 (Loose): Better for hot environments - allows thermal expansion
C4 (Exta Loose): Hot or tight-fit setups — extra room for thermal expansion.
C5 (Max Loose): Extreme heat/tight fits or near-limit speeds — maximum expansion allowance

SEAL OPTIONS

Choose the right protection for your application

6001-ZZ

Most Popular

Double metal shields

Speed Factor: 0.9 (18000 RPM)
Protection: Dust protection
Lubrication: Sealed for life

When to Use 6001-ZZ

Best For: Electronics, small motors, skateboards, general machinery
Conditions: Dry environments, moderate dust, precision applications
Achieves: Excellent balance of speed and protection for most applications
Avoid When: Heavy water exposure, chemical environments, food processing

6001-2RS

Protected

Double rubber seals

Speed Factor: 0.7 (14000 RPM)
Protection: Moisture and dust
Lubrication: Sealed for life

When to Use 6001-2RS

Best For: Outdoor applications, appliances, automotive systems, dirty environments
Conditions: Moisture, dust, contamination, washdown areas, food processing
Achieves: Maximum protection and zero maintenance requirements
Trade-off: Lower speed limit but superior environmental protection

6001

High Speed

Open bearing, no seals

Speed Factor: 1.0 (20000 RPM)
Protection: None
Lubrication: External required

6001-Z

Balanced

Single metal shield

Speed Factor: 0.95 (19000 RPM)
Protection: Light dust protection
Lubrication: Pre-greased

6001-RS

Protected

Single rubber seal

Speed Factor: 0.8 (16000 RPM)
Protection: Moisture and dust
Lubrication: Pre-greased, sealed

APPLICATIONS

Precision performance across industries

Appliance Motors

  • Electric drills
  • Kitchen mixer shafts
  • Portable blower motors
  • Small water pumps
  • Automated curtain drive
  • Handheld garden tools
  • Cooling fan spindles
  • Vacuum cleaner motors

Key Requirements: 12mm shaft with 5.10kN (≈519kg) dynamic load capacity, 18,000 RPM grease lubrication, 28×8mm profile for small appliance drives

Instrument Units

  • Balance wheels
  • Medical actuator spindles
  • Robotic gripper joints
  • Precision microscope drives
  • Optical device mounts
  • Measuring gauge pivots
  • Camera focus shafts
  • Sensor mechanism bearings

Key Requirements: Precision 12mm bore with 0.7mm chamfer radius, 2.38kN (≈243kg) static load rating for accurate positioning

Light Machinery

  • Textile machine rollers
  • Small packaging motors
  • Electric scooter hubs
  • Workshop tool shafts
  • Printer gearboxes
  • Lawn mower blades
  • Micro conveyor rollers
  • Lab equipment drives

Key Requirements: 12mm bore, 8mm width for compact machinery, grease and oil lubrication

Compatible Models & Shaft Requirements

Find bearings with the same bore size and ensure proper shaft preparation

🔄Related Models

6801 (12×21×5mm) 6901 (12×24×6mm) 16001 (12×28×7mm) 6201 (12×32×10mm) 62201 (12×32×14mm) 62301 (12×37×17mm) 6301 (12×37×12mm)

🔧Shaft Requirements

Nominal Diameter 12.000mm
Tolerance Grade h6 (11.989-12.000mm)
Surface Finish Ra 0.8μm max
Runout Tolerance 0.013mm max

🎯Application-Specific Options

High Temperature: C3 clearance recommended
High Speed: RHD V3 & V4 bearings recommended
Corrosive Environment: SS (Stainless Steel) bearings recommended

Professional Expertise & Standards

Technical insights from 20+ years of bearing engineering and manufacturing excellence

🔋ISO Compliance

ISO 15:2011 compliant dimensions ensure interchangeability with global bearing standards and seamless replacement in existing equipment.

🔬Material Science

Gcr15 chrome steel composition optimized for small bearing applications, providing superior hardness, wear resistance, and fatigue life.

⚙️Precision Engineering

C0 clearance standard for most applications, C3 available for high-temperature use. h6 shaft tolerance recommended for optimal performance.

🔧Professional Installation

Professional installation required for maximum service life. Proper tools and techniques prevent 80% of premature failures.

📊Performance Comparison

Shares the 12mm bore (ID) with 6801, 6901, 16001, so it can be considered where the shaft is fixed at 12mm. The 6001 is rated 5.10kN dynamic / 2.38kN static at 28mm OD — more capacity than the 6901 (2.80kN) and less than the heavier-duty 6201 (6.82kN).

💰Value Engineering

Excellent value for small bearing applications. Quality bearings last 3-10x longer than cheap alternatives, reducing total cost of ownership.

FREQUENTLY ASKED QUESTIONS

Expert guidance for 6001 bearing applications

Bearing Selection & Replacement ▼

Can a 6001 bearing handle 550kg loads in electric motors?

Close but not recommended - 6001 handles 520kg (520.2kg (5.1kN)), just under your 550kg requirement.
Why This Matters
Operating at or above rated capacity significantly reduces bearing life and increases failure risk. The 30kg difference represents about 6% overload, which can reduce bearing life by 30-50% in continuous operation. Electric motors require reliable long-term operation.
How To Handle It
Consider 6002 or 6201 series for loads approaching 550kg. If space constraints require 6001, ensure perfect alignment, premium lubrication, and eliminate shock loads. Monitor operating conditions closely for early problem detection.
Always maintain 15-20% safety margin for motor applications - for 550kg loads, specify bearings rated at least 650kg capacity.

What's the difference between 6001 and smaller 6000 bearings?

6001 has 12mm bore vs 6000's 10mm bore, providing higher load capacity for larger shaft applications.
Why This Matters
The 2mm bore increase provides higher load capacity (520kg vs 467kg) while maintaining the same compact 8mm width. This makes 6001 ideal for applications requiring higher loads on 12mm shafts without increasing bearing width. The size increase improves availability and reduces cost per unit load capacity.
How To Handle It
Evaluate shaft size requirements - 12mm shafts are common in medium-duty motors and tools. Compare load requirements against the capacity difference. Consider design standardization benefits of using common shaft sizes.
6001 provides 11% higher load capacity than 6000 while maintaining same width - excellent value for 12mm shaft applications.

Is 6001 suitable for 12mm precision instrument shafts?

Excellent choice for precision instruments requiring reliable performance on 12mm shafts.
Why This Matters
Precision instruments require consistent performance, low noise, and long service life. The 6001's 520kg capacity and 20000 RPM rating handle typical instrument requirements while the premium Gcr15 steel provides smooth, quiet operation essential for precision applications.
How To Handle It
Use sealed versions (6001-ZZ) for contamination protection. Ensure precise installation with proper shaft and housing tolerances. Consider low-noise grease for sound-sensitive applications.
Sealed precision bearings (6001-ZZ) provide years of maintenance-free service in instrument applications.
Installation & Maintenance ▼

What tools are needed to install a 22g 6001 bearing properly?

Small bearing installation tools, controlled heating equipment, and precision measuring instruments for proper 12mm bore installation.
Why This Matters
Proper installation prevents 80% of premature bearing failures. The lightweight 22g bearing and small 12mm bore require careful handling to avoid damage during installation. Small bearings are sensitive to installation forces and temperature extremes.
How To Handle It
Heat bearing to 80°C maximum for thermal expansion. Use appropriate bearing installation tools or hydraulic press with proper support. Verify shaft tolerances (h6: 11.991-12.009mm) carefully. Avoid impact installation methods.
Small bearings heat and cool quickly - work efficiently during installation to take advantage of thermal expansion.

How often should I inspect a 6001 bearing running at 18000 RPM?

Monthly inspections for bearings operating at 18000 RPM, at 90% of the 20000 RPM rating.
Why This Matters
Operating at 90% of rated speed requires regular monitoring to detect wear, contamination, or lubrication issues early. High-speed small bearings can deteriorate rapidly once problems begin. Regular inspection prevents unexpected failures in critical applications.
How To Handle It
Monitor temperature, noise, and vibration monthly. Check lubrication condition in open bearings or verify sealed bearing performance. Look for changes in operating characteristics that indicate developing problems.
Temperature monitoring is most reliable for small high-speed bearings - consistent temperature indicates good condition.

What lubrication schedule works for 6001 in precision equipment?

Relubricate every 4000-6000 operating hours for precision equipment applications depending on operating conditions.
Why This Matters
Precision equipment requires consistent performance and minimal maintenance interruptions. The 6001's moderate load capacity and speeds allow extended lubrication intervals with proper grease selection. Clean environments and controlled conditions in precision equipment extend lubricant life.
How To Handle It
Use high-quality precision grease with good long-term stability. Monitor grease condition during scheduled maintenance. Consider sealed bearings for applications requiring minimal maintenance intervention.
Sealed bearings (6001-ZZ) eliminate maintenance schedules while providing 5+ years of reliable service in precision applications.
Troubleshooting ▼

Why does my 6001 bearing overheat under 450kg loads?

450kg is well within capacity - check lubrication, alignment, and installation for overheating causes.
Why This Matters
Operating at 87% of rated capacity should not cause overheating with proper conditions. Overheating at moderate loads indicates lubrication problems, misalignment, contamination, or installation errors requiring immediate attention to prevent rapid failure progression.
How To Handle It
Verify lubrication quantity and quality first. Check shaft and housing tolerances and concentricity. Look for contamination sources or installation damage. Ensure proper clearances and eliminate binding or excessive preload.
Small bearing overheating usually indicates lubrication issues - verify grease quantity and quality before investigating other causes.

What causes vibration in 6001 bearings at 16000 RPM?

Vibration at 16000 RPM typically indicates contamination, wear, or installation problems requiring investigation.
Why This Matters
Operating at 80% of rated speed should be smooth with proper installation. Vibration in small bearings indicates internal problems that will worsen with continued operation. High speed amplifies any internal irregularities making immediate diagnosis important.
How To Handle It
Stop and inspect for contamination, lubrication adequacy, or installation damage. Check mounting surfaces and alignment. Verify proper shaft and housing fits. Replace bearing if internal damage is suspected.
Vibration in small high-speed bearings often indicates contamination - maintain clean installation environment.

How do I diagnose problems with 12mm 6001 bearings in equipment?

Monitor temperature, noise, and vibration while checking lubrication condition and equipment alignment.
Why This Matters
Small bearings require focused diagnostic approaches emphasizing observable parameters. The compact size limits visual inspection, making systematic monitoring of temperature, noise, and vibration essential for problem detection in 12mm applications.
How To Handle It
Use infrared thermometry for non-contact temperature monitoring. Listen for noise changes indicating wear or contamination. Check equipment alignment and mounting. Inspect lubrication during maintenance intervals.
Consistent temperature readings indicate healthy bearing operation - temperature changes often precede other symptoms.
Cost & Performance ▼

Is it worth upgrading from 400kg to 6001's 520kg capacity?

Yes, the extra 120kg capacity provides 30% safety margin and significantly extended service life.
Why This Matters
Higher load capacity reduces internal stress levels, extending bearing life by 2-3 times in small bearing applications. The cost difference between small bearing grades is minimal compared to replacement labor, equipment downtime, and potential damage from unexpected failures.
How To Handle It
Calculate total cost including replacement labor, equipment downtime, and failure consequences. Consider application safety requirements and load variation factors. Evaluate current bearing performance and failure patterns.
30% capacity safety margin typically doubles bearing life in small equipment applications - excellent return on modest investment.

When should I pay more for bearings rated above 20000 RPM?

Only when operating speeds regularly exceed 18000 RPM or require speed capability for equipment optimization.
Why This Matters
Higher speed ratings require tighter tolerances and premium materials, increasing cost significantly. The 20000 RPM rating handles most small equipment applications effectively. Overpaying for unnecessary speed capability reduces value unless specific high-speed requirements justify the expense.
How To Handle It
Analyze actual operating speeds including startup, normal operation, and maximum conditions. Consider future equipment upgrades and optimization requirements. Compare premium cost against specific performance benefits.
Specify speed rating 10-15% above maximum operating speed - provides adequate safety without unnecessary cost.

What's the cost difference between 6001 and larger 6002 bearings?

6002 costs 20-30% more than 6001 but provides significantly higher load capacity for 15mm vs 12mm shafts.
Why This Matters
Size progression in small bearings involves moderate cost increases but substantial capacity improvements. The 3mm shaft size difference may require design changes but provides significant load capacity increase. Understanding cost scaling helps optimize bearing selection within design constraints.
How To Handle It
Compare application load requirements against shaft size flexibility. Evaluate if design modifications for larger shaft are justified by improved bearing capacity and reliability. Consider standardization benefits within equipment lines.
The 3mm size increase provides substantial capacity improvement - excellent value when shaft size modifications are feasible.
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