6320 Bearing 100×215×47mm

Name: 6320 Bearing 100×215×47mm Deep Groove Ball Bearing | RHD
Brand: RHD Bearings
SKU: 6320

6320 BEARING SPECIFICATIONS

Precision-engineered for reliability and performance

🔍 Common Search Terms

6320 bearing dimensions 100mm bore bearing load capacity medium bearing for motors precision bearing 100mm shaft machinery bearing 6320 bearing specifications

📏Dimensions

d - ID (Bore Diameter)

100mm

D - OD (Outer Diameter)

215mm

B - Width

47mm

d₁ - Shoulder Diameter

≈135.85mm

D₂ - Recess Diameter

≈183.8mm

r₁,₂ - Chamfer Radius

min. 3.0mm

6320 Bearing: 100 × 215 × 47mm

Bearing Cross-Sectional View

6320 Deep Groove Ball Bearing Technical Drawing

⚡Load Ratings

Dynamic Load (Cr) 173kN

Static Load (Cor) 140kN

Load Capacity (kN) 173kN

Load Capacity (kg) 17635kg

💡What This Means

Dynamic Load (173kN): Maximum force while rotating. Exceeding this causes rapid wear and failure within hours.

Static Load (140kN): 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 2800 RPM

Oil Lubrication 3600 RPM

RHD Z2V2 Bearings 1400 RPM

RHD Z3V3 Bearings 2880 RPM

RHD Z4V4 Bearings 6000+ RPM

💡What This Means

Grease Limit (2800 RPM): Heat generation increases exponentially above this. Grease breaks down, causing seizure.

Oil Advantage (3600 RPM): Better heat dissipation allows higher speed. Required for high-speed spindles.

Safe Operating Speed: Use 90% of limit (2520 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 6320 application worldwide

📊Vibration Classes

V2 Grade

Low: 250 μm/s

Med: 215 μm/s

High: 310 μm/s

V3 Grade

Low: 170 μm/s

Med: 145 μm/s

High: 200 μm/s

V4 Grade

Low: 88 μm/s

Med: 88 μm/s

High: 135 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 < 58 dB

Z3 Grade < 53 dB

Z4 Grade (Quiet) < 45 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) 1-18 μm

C0 (Normal) 12-36 μm

C3 (Loose) 30-58 μm

C4 (High Temp) 53-84 μm

C5 (Extra High Temp) 75-120 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

6320-ZZ

When to Use 6320-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

6320-2RS

Protected

Double rubber seals

Speed Factor: 0.7 (1960 RPM)

Protection: Moisture and dust

Lubrication: Sealed for life

When to Use 6320-2RS

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

6320

High Speed

Open bearing, no seals

Speed Factor: 1.0 (2800 RPM)

Protection: None

Lubrication: External required

6320-Z

Balanced

Single metal shield

Speed Factor: 0.95 (2660 RPM)

Protection: Light dust protection

Lubrication: Pre-greased

6320-RS

Protected

Single rubber seal

Speed Factor: 0.8 (2240 RPM)

Protection: Moisture and dust

Lubrication: Pre-greased, sealed

APPLICATIONS

Precision performance across industries

Power Generation

Steam turbine shafts
Hydroelectric generator hubs
Wind turbine gearboxes
Diesel generator cranks
Combined cycle turbine drives
Large alternator ends
Nuclear plant fan shafts
Emergency power flywheels

Key Requirements: 100mm shaft with 173.00kN (≈17635kg) dynamic load, 2,800 RPM grease, 215×47mm for major turbine work

Heavy Lifting

Shipyard crane pivots
Dockside winch beds
Container stacker drums
Massive hoist wheels
Mega-load carrier axles
Bridge maintenance lifts
Steel plant overhead lifts
Railway yard transloaders

Key Requirements: 100mm bore, 140.00kN (≈14276kg) static load, for high load/low speed handling

Bulk Equipment

Ore loader arms
Steel billet roller beds
Mass mover conveyor drums
Raw material dump wagons
Crushing plant drives
Percussion drill rollers
Aggregate separator shafts
Large bucket elevator heads

Key Requirements: 100mm bore, 47mm width, supports slow, continuous movement of largest payloads

Compatible Models & Shaft Requirements

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

🔄Related Models

🔧Shaft Requirements

Nominal Diameter 100.000mm

Tolerance Grade h6 (99.978-100.000mm)

Surface Finish Ra 0.8μm max

Runout Tolerance 0.027mm 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 medium 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 50,000-hour service life. Proper tools and techniques prevent 80% of premature failures.

📊Performance Comparison

Shares the 100mm bore (ID) with 6820, 6920, 6020, so it can be considered where the shaft is fixed at 100mm. The 6320 is rated 173.00kN dynamic / 140.00kN static at 215mm OD — the highest-capacity 100mm-bore option, above the 6220 (122.00kN).

💰Value Engineering

Best value in medium-bearing category for 173.00kN performance. Quality bearings last 3-10x longer than cheap alternatives, reducing total cost of ownership.

FREQUENTLY ASKED QUESTIONS

Expert guidance for 6320 bearing applications

Bearing Selection & Replacement ▼

What shaft tolerance is recommended for 6320 bearing installation?

h6 tolerance grade (99.987-100.000mm) provides optimal fit and performance for 6320 bearings.

Why This Matters

Proper shaft tolerance ensures correct interference fit, preventing slippage while allowing thermal expansion.

How To Handle It

Measure shaft diameter with precision calipers, ensuring it falls within h6 tolerance range before installation.

Use h6 tolerance for standard applications, h5 for high-precision requirements, and h7 for loose fits.

Can I replace a 6320 bearing with a different size bearing?

No, 6320 bearings have unique 100×215×47mm dimensions and cannot be replaced with other sizes without mechanical modifications.

Why This Matters

Bearing dimensions are critical for proper fit, load distribution, and system performance.

How To Handle It

Always use exact 6320 replacement or consult engineering specifications for alternative solutions.

Keep spare 6320 bearings in stock to avoid production delays and ensure consistent quality.

What load capacity does the 6320 bearing provide?

6320 bearing offers 20277.6kg (198.80kN) dynamic load capacity and 135.60kN static load capacity, suitable for motor and machinery applications.

Why This Matters

Load capacity determines bearing suitability for specific applications and operating conditions.

How To Handle It

Calculate actual application loads and ensure they remain within 20277.6kg (198.80kN) dynamic limit with appropriate safety factors.

Use 6320 bearings for applications requiring up to 20286kg load capacity with standard safety margins.

Installation & Maintenance ▼

What lubrication is required for 6320 bearings?

6320 bearings require grease lubrication for standard applications, with 2,800 RPM capability under proper lubrication conditions.

Why This Matters

Proper lubrication reduces friction, prevents wear, and extends bearing service life significantly.

How To Handle It

Apply high-quality bearing grease during installation and maintain regular lubrication intervals based on operating conditions.

Use lithium-based grease for general applications and synthetic grease for high-temperature or high-speed operations.

How do I properly install a 6320 bearing?

Install 6320 bearings using proper bearing installation tools, ensuring even pressure distribution and avoiding damage to bearing surfaces.

Why This Matters

Proper installation prevents premature failure, ensures optimal performance, and maintains dimensional accuracy.

How To Handle It

Use bearing heaters for interference fits, apply force evenly, and verify proper seating after installation.

Professional installation tools prevent 80% of premature bearing failures and ensure maximum service life.

What maintenance schedule is recommended for 6320 bearings?

6320 bearings require regular inspection every 3-6 months, with lubrication replenishment based on operating hours and conditions.

Why This Matters

Regular maintenance prevents unexpected failures, maintains performance, and extends bearing lifespan.

How To Handle It

Establish maintenance schedules based on operating conditions, document all maintenance activities, and monitor bearing condition regularly.

Implement predictive maintenance using vibration analysis to detect issues before they cause failures.

Troubleshooting & Problem Solving ▼

What causes premature failure in 6320 bearings?

Common causes include improper installation, inadequate lubrication, contamination, excessive loads, and misalignment.

Why This Matters

Understanding failure causes helps prevent future issues and improves system reliability.

How To Handle It

Implement proper installation procedures, maintain clean environments, ensure adequate lubrication, and monitor operating conditions.

80% of premature failures are preventable through proper installation and maintenance practices.

How do I identify bearing wear in 6320 bearings?

Signs of wear include increased noise, vibration, temperature rise, and reduced performance in 6320 bearings.

Why This Matters

Early detection of wear prevents catastrophic failures and allows for planned replacement.

How To Handle It

Monitor bearing condition regularly, use vibration analysis equipment, and establish baseline performance measurements.

Implement condition monitoring systems to detect wear patterns before they affect system performance.

What should I do if a 6320 bearing fails unexpectedly?

Immediately stop operation, inspect for damage, identify root cause, and replace with properly installed new bearing.

Why This Matters

Quick response prevents secondary damage and minimizes production downtime.

How To Handle It

Document failure details, analyze root causes, implement corrective actions, and maintain spare bearings for critical applications.

Keep detailed failure records to identify patterns and prevent similar issues in the future.

Cost & Performance Optimization ▼

How does 6320 bearing cost compare to alternatives?

6320 bearings offer excellent value with 20277.6kg (198.80kN) load capacity at competitive pricing, providing 3-10x longer lifespan than budget alternatives.

Why This Matters

Total cost of ownership includes initial cost, maintenance, replacement frequency, and downtime costs.

How To Handle It

Calculate total cost of ownership, consider quality vs. price trade-offs, and invest in proper installation and maintenance.

High-quality bearings like 6320 typically cost 20-30% more but last 3-10x longer than budget alternatives.

What performance benefits does 6320 bearing provide?

6320 bearings deliver high load capacity, excellent speed capability, precision dimensions, and reliable performance in machinery applications.

Why This Matters

Performance directly impacts system efficiency, reliability, and overall productivity.

How To Handle It

Select 6320 bearings for applications requiring 100mm bore, 20277.6kg (198.80kN) load capacity, and 2,800 RPM capability.

6320 bearings excel in applications requiring compact size with high performance capabilities.

How can I optimize 6320 bearing performance?

Optimize performance through proper installation, adequate lubrication, contamination control, and regular maintenance practices.

Why This Matters

Optimized performance extends bearing life, reduces maintenance costs, and improves system reliability.

How To Handle It

Follow manufacturer recommendations, implement preventive maintenance, monitor operating conditions, and use quality lubricants.

Proper optimization can extend 6320 bearing service life from 20,000 to 50,000+ hours in typical applications.

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