RN311M Cylindrical Roller Bearing Metal Cage 2RS Sealed Bearings For Industrial / Mining
Price:
Negotiable
MOQ:
1
Delivery Time:
5-8 work days
Brand:
Kesle
Product Description
RN311M Cylindrical Roller Bearing Metal Cage 2RS Sealed Bearings For Industrial / Mining
Product Overview
RN311M is a single-row cylindrical roller bearing with a metal cage (identified by the suffix "M"). It features high radial load capacity and low frictional resistance, making it suitable for industrial scenarios with high requirements for rotational speed and load.
Basic Parameters
Structural Design
Consists of an inner ring, outer ring, cylindrical rollers, and a stamped steel cage. Features double-sided rubber seals (2RS) for enhanced protection.
Dimensional Specifications
| Parameter | Value |
|---|---|
| Inner Diameter | 55mm |
| Outer Diameter | 106.5mm |
| Width | 29mm |
| Weight | Approximately 1.0kg |
These dimensions comply with ISO 15 size series standard and fit common equipment installation spaces.
Material and Process
- Bearing Steel: High-carbon chromium bearing steel (GCr15) with quenching and tempering treatment
- Surface Hardness: HRC58-62 for excellent wear and impact resistance
- Machining Precision: Raceway precision reaches class P5 with surface roughness Ra≤0.8μm
Performance Indicators
Load Capacity
- Dynamic Radial Load: Approximately 105kN
- Static Radial Load: Approximately 135kN
Can withstand moderate impact loads, suitable for heavy-load working conditions.
Rotational Speed Characteristics
- Rotational Speed with Grease Lubrication: 4800r/min
- Rotational Speed with Oil Lubrication: 6300r/min
Sealing and Lubrication
- Standard Configuration: Double-sided rubber seal (2RS) with IP54 protection class
- Lubrication Recommendation: Lithium-based grease (NLGI Grade 2)
- Operating Temperature Range: -30℃ to +120℃
- Maintenance Cycle: 2000 hours under normal working conditions
Application Fields
Industrial Machinery
- Reducers: Main transmission parts of cycloidal pinwheel reducers and gearboxes
- Textile Equipment: High-precision transmission systems including large cylinder motors and winding mechanisms
- Mining Machinery: Supporting shaft systems of crushers and conveyors
Special Working Conditions
- Dusty Environments: IP54 seal handles cement plants and quarries
- Medium-Temperature Environments: Operating range covers most industrial environments
Installation and Maintenance
Installation Requirements
- Tool Usage: Hydraulic or hot-fitting methods required to avoid raceway damage
- Coaxiality Control: Radial runout of inner and outer rings must be ≤0.08mm
- Bolt Pre-tightening: Recommended torque for M16 mounting bolts is 220N・m (tightened in three gradient steps)
Maintenance Standards
- Lubrication Inspection: Check grease condition every 500 hours
- Seal Monitoring: Regularly observe seal ring wear and replace as needed
- Service Life Prediction: Analyze operating data through vibration monitoring equipment
Technical Alternatives
Equivalent Model References
- Economic Alternative: RN311 (nylon cage) with 90% load capacity, suitable for light-load conditions
- High-Protection Type: RN311M/C3 (with increased clearance) for high-temperature scenarios
Performance Optimization Options
- High-Speed Type: Customized class P4 precision with maximum rotational speed of 7000r/min
- Long-Life Type: Carburized steel material (e.g., 20CrMnTi) with rated life L10 up to 8000 hours
Certification and Inspection
Quality Control
- Factory Inspection: 100% pass hardness, clearance, and sealing performance tests
- Sampled Testing: Products undergo 200-hour life bench tests
- Certification Standards: Complies with ISO 15 and GB/T 283 standards
- Additional Certification: CE certification available (customization required)
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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Dongguan Kesle Electronic Hardware Co., Ltd
Location
Guangdong Dongguan Kesile Electronic & Hardware Products Factory
Contact Person
orlenda li