Description
Product Specifications
| Parameter | Details |
|---|---|
| Model NO. | 21310, 21311, 21312 |
| Precision Rating | P0, P6, P5, P4, P2 |
| Clearance | C0, C3, C4 |
| Rolling Body | Roller Bearings |
| The Number of Rows | Double |
| Material | Bearing Steel |
| Type | Self-Aligning Roller Bearings |
| Load Direction | Radial Bearing |
| Separated | Unseparated |
| Outer Dimension Range | 50-2500 mm |
| Specification (21310) | 50*110*27 mm |
| Trademark | NTN |
| Origin | Japan |
| HS Code | 8482300000 |
| Service | OEM, ODM |
Application Industries
| Industry | Typical Equipment |
|---|---|
| Automotive | Transmissions, Differentials, Steering Systems |
| General Machinery | Conveyors, Pumps, Fans, Gearboxes |
| Industrial Manufacturing | Compressors, Hydraulic Systems, Machine Tool Spindles |
Stop Production Delays with Genuine NTN Self-Aligning Roller Bearings 21310-21312
Production managers know the cost of unexpected downtime—especially when caused by counterfeit bearings that fail prematurely or mismatched components that throw off schedules. Sourcing reliable NTN self-aligning roller bearings often means navigating multi-tier distributors with 30–50% longer lead times, or risking gray-market products with incomplete traceability that stall customs clearance.
Authorized NTN Supply for Automotive and Machinery OEMs
As an official NTN distributor, we eliminate these pain points by providing direct access to genuine 21310, 21311, and 21312 self-aligning roller bearings. Our ISO 9001 compliant three-level inspection ensures every unit meets OEM standards, while WMS real-time inventory means your required bearings are often in stock and ready to ship. These bearings excel in applications like automotive transmissions and industrial gearboxes, where radial load capacity and alignment compensation are critical.
Engineered for Heavy-Duty Radial Applications
NTN self-aligning roller bearings are designed to handle high radial loads and accommodate shaft misalignment up to 2 degrees—ideal for machinery operating in harsh industrial environments. The double-row roller design distributes load evenly, reducing stress on shafts and extending equipment life. Whether in continuous-duty conveyors or high-torque automotive differentials, these bearings maintain performance under fluctuating loads and variable speeds.
Technical Features That Drive Reliability
The performance of NTN 21310-21312 bearings stems from precision engineering. Their P0-P2 precision ratings ensure minimal vibration and noise in high-speed applications, while clearance options (C0/C3/C4) allow customization for thermal expansion or preload requirements. Constructed from high-grade bearing steel, they balance hardness and toughness to resist wear, even in dusty or high-temperature machinery. The unseparated design simplifies installation, reducing assembly time and errors in production lines.
Why Genuine NTN Bearings Lower Total Costs
Choosing authentic Japan NTN aligning bearings over counterfeits eliminates hidden expenses: premature failures, unplanned maintenance, and production line shutdowns. A single counterfeit bearing failure can cost 10x its purchase price in downtime. Our bearings come with full traceability documentation, ensuring compliance with export regulations and reducing customs delays. For OEMs, this means consistent batch quality and predictable lead times that align with production schedules.
Our Commitment to Your Production Continuity
With over 10 years serving 50+ countries, we’ve built our reputation on four pillars: official NTN authorization with complete product traceability, a technical team specializing in bearing selection and failure analysis, global door-to-door logistics with real-time tracking, and flexible OEM customization to meet unique application needs. Every order includes dedicated account management from quotation to after-sales support, ensuring transparency at every stage.
Packaging & Shipping
- Original NTN packaging with carton and pallet reinforcement for secure transport
- Package Size: 13.00cm * 13.00cm * 5.70cm (single unit)
- Package Gross Weight: 1.220kg (single unit)
- Global logistics options including DHL, FedEx, UPS, air, and sea freight
- Real-time shipment tracking provided upon dispatch
- Flexible order quantities from small batches to bulk OEM supply
Get Your NTN Bearings Shipped Within 24 Hours
Don’t let bearing procurement slow your production. Send us your model list, application parameters, and order volume today—we’ll issue a formal quotation with authorization certificates within 24 hours. For urgent needs, our WMS inventory ensures common models like 21310, 21311, and 21312 can ship immediately, minimizing downtime and keeping your lines running.
Frequently Asked Questions
Q: Are these genuine NTN bearings?
A: Yes, we are an official NTN authorized distributor. Every bearing comes with full traceability documentation and brand authorization certificates to verify authenticity.
Q: How do I confirm the right bearing model for my equipment?
A: Provide your equipment model, operating conditions (load, speed, temperature), or existing bearing dimensions. Our technical team will verify compatibility at no cost.
Q: What is your warranty policy?
A: We stand by NTN’s original manufacturer warranty, covering manufacturing defects with unconditional replacement or refund.
Q: What is the minimum order quantity?
A: We accept orders starting from 1 unit, supporting both emergency maintenance and large-scale OEM production needs.
Q: How quickly can you ship?
A: In-stock bearings ship within 3-7 business days. For custom OEM orders, lead times are provided in the initial quotation.
Q: How can I verify bearing authenticity?
A: Each bearing includes NTN’s original packaging with security labels, laser-etched part numbers, and batch codes. We also provide full traceability documents for cross-verification.
Ready to order or need a quote?
Send your bearing designation, application details, and quantity — we’ll respond within 24 hours.
