246x313x33mm BA246-2A Bearing Single Row Excavator Slewing Bearing For Construction Excavator
Price:
Negotiable
MOQ:
1
Delivery Time:
5-8 work days
Brand:
Kesle
Product Description
246x313x33mm BA246-2A Bearing Single Row Excavator Slewing Bearing For Construction Excavator
BA246 2A Slewing Bearing 246×313×33mm For Construction Excavators
Basic Parameters
Type and Structure
A single-row ball slewing bearing composed of inner ring, outer ring, rolling elements (steel balls), and cage, featuring a high-rigidity and low-friction design. In the model, "246" corresponds to an inner diameter of 246mm, and "2A" indicates a double-row sealed or reinforced structure.
Dimensional Parameters
Inner diameter:
246mm
Outer diameter:
313mm
Thickness:
33mm
Suitable for compact space requirements and capable of high-load transmission.
Material and Process
Made of high-carbon chromium bearing steel (e.g., GCr15), subjected to quenching and tempering. Surface hardness reaches HRC58-62, with wear-resistant and impact-resistant properties. Raceway precision is above class P5, surface roughness Ra≤0.1μm, and friction coefficient ≤0.0015.
Performance Indicators
Load Capacity
Dynamic load rating:
2000kN (axial) + 1500kN (radial)
Overturning moment:
3500kN·m
Capable of withstanding severe impact loads during construction machinery operation.
Sealing and Lubrication
Sealing structure: Double-lip nitrile rubber seal (2RS) combined with labyrinth dustproof design, effectively blocking dust and muddy water.
Lubrication system: Built-in lithium-based grease (NLGI Grade 2), operating temperature range -30℃ to +120℃, maintenance-free during service life.
Reliability Parameters
- Rotary precision: ≤0.05mm (preload assembly eliminates clearance)
- Vibration and noise: Class P5 raceway precision reduces operating noise by over 15dB
- Impact resistance: Able to withstand instantaneous impact of 3 times the rated load
Application Specifications
Typical Applications
- Construction machinery: Excavator travel reducers, rotary platforms of medium and small cranes
- Mining machinery: Steering axles of mining trucks, traveling wheel sets of port gantry cranes
- Special working conditions: Dust environments (IP67 protection class), extremely cold regions at -40℃ (optional low-temperature grease)
Installation Requirements
- Installation tools: Special hydraulic tooling required to avoid raceway damage from hammering
- Bolt preload: Recommended torque for M24 bolts is 450N·m (tightening in torque gradients required)
- Coaxiality: After installation, check inner/outer ring runout ≤0.08mm
Maintenance Standards
- Lubrication interval: Replenish grease every 2000 hours under normal working conditions
- Seal inspection: Check seal lip wear every 500 hours
- Service life prediction: Estimate remaining life by inputting working condition data (rotational speed, load, temperature) into online tools
Technical Alternatives
Equivalent Model References
- Model A: Dimensions 246×313×33, load capacity up to 95% (suitable for standard working conditions)
- Model B: ZKLN246313.2RS structure, seal grade upgraded to IP69K (suitable for extremely cold/high-dust environments)
Performance Alternatives
- High-speed type: Customizable to class P4 precision, maximum rotational speed increased to 120r/min
- Long-life type: Using carburized steel material, rated life extended to L10=5000 hours
Inspection and Certification
Factory Inspection
- 100% inspection items: Raceway hardness, clearance, sealing performance
- Sampling inspection items: Dynamic load test (3% sampling per batch), life bench test (≥100 hours)
Certification Standards
- Compliant with ISO 104 standard (non-standardized BA series)
- Optional certifications: CE certification (Pressure Equipment Directive), RoHS environmental certification
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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