Ensure smooth, precise rotation for your industrial machinery with our Self Aligning Ball Bearing 2311K-2RS, engineered to eliminate misalignment issues and reduce downtime. Crafted with high-grade materials and available in P0-P4 precision grades, this 55x120x43mm bearing delivers consistent performance even under heavy loads, making it ideal for machine tools, textile equipment, and other industrial applications.
| Parameter | Details |
|---|---|
| Model NO. | 2311K-2RS |
| Precision Rating | P0, P6, P5, P4, P2 |
| Clearance | C0, C3, C4 |
| Cage | Steel Cage, Brass Cage |
| Specification | 55×120×43 mm |
| HS Code | 8482101000 |
| Industry | Typical Equipment |
|---|---|
| Industrial Machinery | Machine Tool Spindles, Conveyors, Reducers |
| Manufacturing | Printing Machinery, Textile Equipment, Packaging Machines |
| Agricultural Machinery | Tractor Transmissions, Harvester Drivetrains |
| Automotive | Heavy-Duty Truck Axles, Gearbox Assemblies |
Industrial machinery operators know the cost of unexpected downtime—hours lost to bearing failures, missed production deadlines, and emergency repairs. Many face challenges with inconsistent bearing quality, long lead times for custom specifications, or difficulty finding precision components that match their equipment’s exact needs. When your machinery relies on smooth rotation, even minor bearing issues can escalate into major operational disruptions.
The Self Aligning Ball Bearing 2311K-2RS addresses these pain points with its robust design and versatile performance. As a professional bearing manufacturer with decades of export experience, we produce this bearing to meet P0-P4 precision grades and Z2-Z4 noise standards, ensuring compatibility with high-demand industrial environments. Whether used in machine tool spindles, conveyors, or agricultural equipment, its self-aligning capability compensates for shaft misalignment, reducing wear and extending service life.
This bearing excels in applications involving moderate radial loads and light axial loads, common in industrial machinery like reducers and printing presses. Its 55×120×43 mm dimensions and double-sealed (2RS) design provide effective protection against contaminants, making it suitable for both indoor and outdoor use. The steel or brass cage options offer flexibility—steel for cost-effectiveness in standard operations, and brass for enhanced durability in high-speed or high-temperature scenarios.
Precision and reliability define the 2311K-2RS. Its P0-P4 precision ratings ensure minimal runout and vibration, critical for maintaining machine accuracy in CNC operations. Clearance options (C0, C3, C4) allow customization based on thermal expansion needs—C3 and C4 clearances accommodate higher operating temperatures, preventing seizure in heavy-duty applications. The double-sealed construction retains lubrication and blocks debris, reducing maintenance requirements and extending intervals between replacements. With strict incoming material inspections and full-process production supervision, each bearing meets ISO international standards, guaranteeing consistent quality.
Opting for low-quality bearings may reduce initial costs, but the hidden expenses add up—premature failures, unplanned downtime, and potential damage to connected components. Our 2311K-2RS bearing, made from high-grade chrome steel and premium raw materials, offers stable performance and long service life, lowering total cost of ownership. All products undergo dimensional detection, noise testing, and service life experiments in our in-house laboratory, ensuring they meet the same standards as genuine NSK and INA bearings we supply.
With ISO 9001:2015 and ISO 14001 certifications, we adhere to strict quality management and environmental standards. Our one-stop service covers independent R&D, mass production, and global sales, supported by a professional technical team offering free guidance on selection, installation, and maintenance. We provide flexible order options—1 piece MOQ for standard bearings, sample orders without MOQ, and customized quantities negotiable—with efficient delivery (3-5 days for samples, 5-15 days for bulk). Distributors and wholesalers benefit from free samples (freight borne by customer), while all clients receive a 12-month warranty and free replacement for qualified defective products.
Don’t let bearing issues disrupt your production schedule. Whether you need a single replacement or bulk order, we ensure prompt delivery and reliable performance. Contact us with your specifications, and our technical team will help confirm compatibility, ensuring you get the right bearing for your equipment.
Q: Is this bearing genuine and traceable?
A: Yes, all our bearings are produced in our ISO-certified factory and undergo strict quality control. We provide full traceability documentation for each product.
Q: How do I confirm if the 2311K-2RS fits my equipment?
A: Share your equipment model, shaft diameter, and operating conditions (load, speed, temperature), and our technical team will verify compatibility free of charge.
Q: What is the warranty policy?
A: We offer a 12-month warranty from the date of delivery. Defective products due to manufacturing issues will be replaced free of charge or refunded.
Q: What is the minimum order quantity?
A: Standard bearings have a 1 piece MOQ. Sample orders are available without MOQ, and customized order quantities are negotiable.
Q: How long does shipping take?
A: Sample orders ship in 3-5 working days, bulk orders in 5-15 working days. We offer DHL, FedEx, UPS, air, and sea freight options for global delivery.
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Send your bearing designation, application details, and quantity — we'll respond within 24 hours.
High-grade chrome steel, raw material QC, full-process monitoring, ISO/ABMA/DIN compliance.
Samples in 3-5 days, bulk orders 5-15 days. Free samples for distributors (freight collect).
P0-P4 precision grades, Z2-Z3-Z4 noise levels. Custom drawings welcome.
Professional technical guidance and failure solutions from our R&D team.
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