NTN NSK UC307 UCP307 Pillow Block Insert Bearing

Product Specifications

Application Suitability

Struggling with Angular Contact Ball Bearing Selection? The 3211A Series Delivers Reliability

Finding the right angular contact ball bearing for heavy-duty applications like rolling mills or mining equipment can be challenging. Mismatched dimensions lead to installation delays, while low-quality bearings often fail prematurely due to inadequate material hardness. Sourcing from multiple suppliers for different brands only adds complexity to your procurement process.

Engineered for Multi-Directional Load Performance

The 3211A series angular contact ball bearings address these challenges with precision-engineered design. As a professional bearing supplier with ISO 9001 certified production processes, we ensure each unit meets strict dimensional and material standards. Available in 3211A-2RS1/C3, 3211A-2Z, and 3211ATN9 configurations, these double-row bearings handle both radial and thrust loads, making them ideal for automobile transmissions and metallurgical equipment where complex force patterns are common.

Optimized for Demanding Industrial Environments

This bearing excels in applications requiring high precision and durability. With a specification of 100*55*33.3 mm and bearing steel construction, it operates reliably under heavy loads in environments like mine conveyors and rolling mills. The double-row design provides enhanced rigidity, while vibration grades Z1V1 to Z3V3 allow customization based on noise and smoothness requirements—critical factors in automated production lines where equipment stability directly impacts product quality.

Key Engineering Features That Maximize Service Life

Several critical specifications contribute to the 3211A series’ performance. The bearing steel material offers superior surface hardness and wear resistance compared to general-purpose steels, extending service life in abrasive conditions. Precision ratings from P0 to P2 ensure compatibility with everything from standard industrial machinery to high-precision automated equipment. For applications with varying maintenance access, the grease or oil lubrication options provide flexibility—oil lubrication suits high-speed operations, while grease simplifies maintenance in hard-to-reach locations like rolling mill stands.

Why Proper Bearing Selection Reduces Total Costs

Choosing the right angular contact ball bearing directly impacts your bottom line. A bearing with insufficient load capacity or precision can cause equipment downtime, leading to lost production and expensive repairs. The 3211A series’ double-row design and load direction capabilities minimize the risk of premature failure, while our rich stock availability ensures quick replacement when needed. By selecting a bearing that matches your application’s exact requirements—whether for radial-thrust combination loads or specific vibration levels—you avoid the hidden costs of frequent replacements and unplanned maintenance.

Quality Assurance You Can Trust

Packaging & Shipping

• Packaged in cartons with pallets for secure transportation
• Rich stock availability ensures prompt dispatch for urgent orders
• Flexible shipping options including express, road, train, air, and sea
• Low minimum order quantities supported, accommodating both small and large volume requirements

Get a Quote for Your 3211A Series Bearing Needs

Whether you need the 3211A-2RS1/C3, 3211A-2Z, 3211ATN9, or another angular contact ball bearing model, we can help. Provide your required model, quantity, and delivery location, and our team will respond with pricing and lead time within hours. With our extensive inventory and multi-brand sourcing capabilities, we make procuring the right bearings simple and efficient.

Frequently Asked Questions