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6005 Bearing 25x47x12mm | RHD Bearings

25mm bore with the endurance of a marathon runner and the precision of a Swiss watchmaker.

Meet the 6005: With 1019kg (10.0kN) of engineering excellence and 25mm 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.

25mm
Bore Diameter
47mm
Outer Diameter
12mm
Width
10.0 kN
Load Rating
1019 Kg
Load Capacity
0.078 Kg
Weight
Technical Specifications Applications 📞 Call +91-9702081858
6005 Bearing 25×47×12mm - RHD Bearings

6005 BEARING SPECIFICATIONS

Precision-engineered for reliability and performance

🔍 Common Search Terms

25mm bearing heavy duty applications 6005 bearing load capacity specifications medium bearing 25x47x12 dimensions automotive bearing 25mm shaft heavy duty bearing Mumbai supplier industrial equipment bearing 25mm

📏Dimensions

d - ID (Bore Diameter)
25mm
D - OD (Outer Diameter)
47mm
B - Width
12mm
d₁ - Shoulder Diameter
≈32.0mm
D₂ - Recess Diameter
≈42.2mm
r₁,₂ - Chamfer Radius
min. 0.6mm
6005 Bearing: 25 × 47 × 12mm

Cross-Sectional View

6005 deep groove ball bearing technical drawing showing cross-sectional view, dimensions and specifications

⚡Load Ratings

Dynamic Load (Cr) 10.0kN
Static Load (Cor) 5.85kN
Load Capacity (kN) 10.0kN
Load Capacity (kg) 1019kg

💡What This Means

Dynamic Load (10.0kN): Maximum force while rotating. Exceeding this causes rapid wear and failure within hours.
Static Load (5.85kN): 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 13000 RPM
Oil Lubrication 17000 RPM
RHD Z2V2 Bearings 1400 RPM
RHD Z3V3 Bearings 2880 RPM
RHD Z4V4 Bearings 6000+ RPM

💡What This Means

Grease Limit (13000 RPM): Heat generation increases exponentially above this. Grease breaks down, causing seizure.
Oil Advantage (17000 RPM): Better heat dissipation allows higher speed. Required for high-speed spindles.
Safe Operating Speed: Use 90% of limit (11700 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 6005 application worldwide

📊Vibration Classes

V2 Grade
Low: 130 μm/s
Med: 100 μm/s
High: 75 μm/s
V3 Grade
Low: 80 μm/s
Med: 60 μm/s
High: 45 μm/s
V4 Grade
Low: 60 μm/s
Med: 30 μm/s
High: 32 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 < 42 dB
Z3 Grade < 38 dB
Z4 Grade (Quiet) < 34 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) 1-11 μm
C0 (Normal) 5-20 μm
C3 (Loose) 13-28 μm
C4 (High Temp) 23-41 μm
C5 (Extra High Temp) 30-53 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

6005-ZZ

Most Popular

Double metal shields

Speed Factor: 0.9 (11700 RPM)
Protection: Dust protection
Lubrication: Sealed for life

When to Use 6005-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

6005-2RS

Protected

Double rubber seals

Speed Factor: 0.7 (9100 RPM)
Protection: Moisture and dust
Lubrication: Sealed for life

When to Use 6005-2RS

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

6005

High Speed

Open bearing, no seals

Speed Factor: 1.0 (13000 RPM)
Protection: None
Lubrication: External required

6005-Z

Balanced

Single metal shield

Speed Factor: 0.95 (12350 RPM)
Protection: Light dust protection
Lubrication: Pre-greased

6005-RS

Protected

Single rubber seal

Speed Factor: 0.8 (10400 RPM)
Protection: Moisture and dust
Lubrication: Pre-greased, sealed

APPLICATIONS

Precision performance across industries

Electric Motors

  • Industrial pump motors
  • Automotive blower motors
  • HVAC fan motors
  • Water circulation pumps
  • Power tool motors
  • Machine tool spindles
  • Electric vehicle motors
  • Refrigeration compressors

Key Requirements: 25mm shaft with 11.00kN (≈1,120kg) dynamic load capacity, 10,000 RPM grease lubrication, 52×15mm profile for motor applications

Automation Arms

  • Robotic assembly joints
  • Material handling pivots
  • Positioning stage spindles
  • Automated welding arm joints
  • Inspection robot pivots
  • Sensor mount bearings
  • Precision actuator pivots
  • CNC rotary tables

Key Requirements: Precision 25mm bore with 6.8kN (≈695kg) static load rating for automated tasks

Heavy Drives

  • Conveyor drive shafts
  • Industrial mixer spindles
  • Hydraulic pump drives
  • Agricultural equipment shafts
  • Packaging machine rollers
  • Small automotive gearboxes
  • Material handling rollers
  • Process machinery shafts

Key Requirements: 25mm bore, 15mm width, engineered for heavy load drives

Compatible Models & Shaft Requirements

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

🔄Related Models

6205 (25×52×15mm) 6305 (25×62×17mm) 6805 (25×37×7mm) 6905 (25×42×9mm)

🔧Shaft Requirements

Nominal Diameter 25.000mm
Tolerance Grade h6 (24.987-25.013mm)
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 heavy-duty performance, 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

Handles 1020kg load capacity with robust 12mm width. Superior Gcr15 steel vs. standard steel in competing products.

💰Value Engineering

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

FREQUENTLY ASKED QUESTIONS

Expert guidance for 6005 bearing applications

Bearing Selection & Replacement ▼

Can a 6005 bearing handle 1100kg loads in industrial machinery?

Close but not recommended - 6005 handles 1020kg (1020.0kg (10.0kN)), just under your 1100kg requirement.
Why This Matters
Operating at or above rated capacity significantly reduces bearing life and increases failure risk. The 80kg difference represents about 8% overload, which can reduce bearing life by 40-60% in continuous operation. Heavy machinery requires reliable performance under full loads.
How To Handle It
Consider 6006 or 6205 series for loads approaching 1100kg. If space constraints require 6005, ensure perfect alignment, premium lubrication, eliminate shock loads, and implement continuous monitoring for early problem detection.
Always maintain 15-20% safety margin for heavy machinery - for 1100kg loads, specify bearings rated at least 1300kg capacity.

What's the difference between 6005 and smaller 6004 bearings?

6005 has 25mm bore vs 6004's 20mm bore, providing higher load capacity with same width.
Why This Matters
The 5mm bore increase provides higher load capacity (1020kg vs 956kg) while maintaining the same 12mm width. This makes 6005 ideal for applications requiring higher loads on 25mm shafts without increasing bearing width. The substantial bore increase improves load handling.
How To Handle It
Evaluate shaft size requirements - 25mm shafts are common in medium to heavy industrial equipment. Compare load requirements against the capacity difference. Consider that width remains constant while capacity increases significantly.
6005 provides 7% higher load capacity than 6004 with same width - excellent efficiency improvement for 25mm shafts.

Is 6005 suitable for 25mm heavy-duty automotive shafts?

Excellent choice for heavy-duty automotive applications requiring reliable performance on 25mm shafts.
Why This Matters
Heavy-duty automotive applications subject bearings to high loads, speeds, vibration, and environmental stresses. The 6005's 1020kg capacity and 13000 RPM rating handle demanding automotive requirements while premium Gcr15 steel provides durability against continuous operation.
How To Handle It
Use sealed versions (6005-ZZ) for contaminated environments. Ensure proper installation with correct tolerances for thermal expansion. Consider high-temperature conditions and select appropriate clearance grade for demanding automotive use.
Sealed bearings (6005-ZZ) provide 5-8 years of maintenance-free service in heavy-duty automotive applications.
Installation & Maintenance ▼

What tools are needed to install a 78g 6005 bearing properly?

Standard bearing installation tools, controlled heating equipment, and precision measuring instruments for proper 25mm bore installation.
Why This Matters
Proper installation prevents 80% of premature bearing failures. The 78g weight and 25mm bore require appropriate installation techniques to prevent internal damage. Medium-size bearings benefit from thermal installation while being substantial enough for standard procedures.
How To Handle It
Heat bearing to 80-90°C for thermal expansion. Use bearing installation tools or hydraulic press with proper adapters. Verify shaft tolerances (h6: 24.987-25.013mm) and housing concentricity. Avoid impact installation methods that can damage components.
Thermal installation provides controlled, damage-free installation - maintain consistent temperature for optimal expansion.

How often should I inspect a 6005 bearing running at 11500 RPM?

Monthly inspections for bearings operating at 11500 RPM, at 88% of the 13000 RPM rating.
Why This Matters
Operating at 88% of rated speed with heavy loads requires regular monitoring to detect wear, contamination, or lubrication degradation. Medium-speed bearings under high loads benefit from systematic monitoring to optimize maintenance timing and prevent failures.
How To Handle It
Monitor temperature, noise, and vibration monthly. Check lubrication condition in open bearings or verify sealed bearing performance. Document measurements for trend analysis and predictive maintenance scheduling.
Combined monitoring of multiple parameters provides better failure prediction and maintenance optimization than single measurements.

What lubrication schedule works for 6005 in heavy industrial applications?

Relubricate every 2000-3000 operating hours for heavy industrial applications depending on operating conditions.
Why This Matters
Heavy industrial environments subject bearings to high loads, contamination, and temperature variations requiring consistent lubrication management. The 6005's size allows reasonable grease capacity while heavy-duty conditions accelerate lubricant degradation.
How To Handle It
Use heavy-duty industrial lithium complex grease for demanding environments. Monitor grease condition and contamination levels regularly. For continuous heavy-duty operation, consider automatic lubrication systems to ensure consistent supply.
Sealed bearings (6005-ZZ) eliminate lubrication schedules while providing 3-5 years of reliable heavy-duty service.
Troubleshooting ▼

Why does my 6005 bearing overheat under 900kg loads?

900kg is well within capacity - check lubrication adequacy, alignment precision, and installation quality systematically.
Why This Matters
Operating at 88% of rated capacity should not cause overheating with proper conditions. Overheating at moderate loads indicates lubrication problems, misalignment, contamination, or installation errors requiring systematic investigation to prevent rapid deterioration.
How To Handle It
Verify lubrication quantity, quality, and distribution first. Check shaft and housing alignment within specified tolerances. Inspect for contamination sources or installation damage. Ensure proper internal clearances without binding or excessive preload.
Systematic troubleshooting approach - lubrication first, alignment second, installation third provides efficient problem resolution.

What causes rumbling noise in 6005 bearings at 12000 RPM?

Rumbling noise at 12000 RPM indicates wear, contamination, or lubrication breakdown requiring immediate attention.
Why This Matters
Operating at 92% of rated speed should produce smooth, consistent operation. Rumbling noise indicates significant internal problems that will progress rapidly without intervention. High load capacity bearings are more sensitive to lubrication and contamination issues.
How To Handle It
Stop operation and inspect for contamination, lubrication adequacy, and internal wear patterns. Check for proper grease distribution and quality. Verify installation integrity and mounting surface condition. Replace bearing if internal damage is confirmed.
Rumbling noise typically indicates advanced wear or contamination - immediate replacement prevents secondary damage to equipment.

How do I diagnose problems with 25mm 6005 bearings in heavy equipment?

Use comprehensive monitoring including temperature, vibration, noise analysis, and load assessment for heavy-duty applications.
Why This Matters
Heavy-duty bearings require comprehensive diagnostic approaches due to higher loads and more demanding operating conditions. The 25mm size provides adequate mass for effective vibration analysis while requiring systematic monitoring for reliable problem assessment.
How To Handle It
Establish baseline measurements for all parameters when bearings are new. Use infrared thermometry, vibration analysis, acoustic monitoring, and load verification. Correlate multiple measurements for accurate diagnosis and maintenance timing.
Heavy-duty applications require multi-parameter monitoring - temperature, vibration, and load analysis together provide comprehensive bearing health assessment.
Cost & Performance ▼

Is it worth upgrading from 900kg to 6005's 1020kg capacity?

Yes, the extra 120kg capacity provides 13% safety margin and extended service life in heavy-duty applications.
Why This Matters
Higher load capacity reduces internal stress levels, extending bearing life substantially in heavy-duty industrial applications. The moderate cost difference is minimal compared to replacement costs, equipment downtime, and potential production losses from unexpected failures.
How To Handle It
Calculate total ownership cost including replacement labor, equipment downtime, and maintenance intervals. Consider application safety requirements and load variation factors. Evaluate current bearing performance and failure patterns in heavy-duty use.
13% capacity safety margin provides measurable life extension in heavy-duty applications - good return on investment.

When should I pay more for bearings rated above 13000 RPM?

Only when operating speeds regularly exceed 11500 RPM or require speed capability for equipment optimization.
Why This Matters
Higher speed ratings require tighter tolerances and premium materials, increasing cost significantly. The 13000 RPM rating handles most medium-duty industrial applications effectively. Overpaying for unnecessary speed capability reduces value unless specific requirements justify the premium.
How To Handle It
Analyze actual operating speeds including all conditions and future requirements. Consider equipment upgrade plans and optimization needs. Compare premium cost against specific performance benefits and equipment lifecycle requirements.
Specify speed rating 10-15% above normal operating speed - provides adequate safety without unnecessary cost premium.

What's the cost difference between 6005 and larger 6006 bearings?

6006 costs 30-40% more than 6005 but provides significantly higher load capacity for 30mm vs 25mm shafts.
Why This Matters
Size progression involves moderate cost increases but provides substantial capacity improvements. The 5mm shaft size difference may require design modifications but offers significant load capacity increase. Understanding cost scaling helps optimize selection within design constraints.
How To Handle It
Compare application load requirements against shaft size modification requirements. Evaluate if design changes for larger shaft are justified by improved bearing capacity and reliability. Consider standardization benefits within equipment product lines.
The 5mm size increase provides substantial capacity improvement - excellent value when design modifications for larger shaft are feasible.
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