High Precision Spherical Self-Aligning Roller Bearing 21310 21311 21312 21313 for Industrial Machinery

Product Specifications

Application Industries

Eliminate Downtime with High Precision Spherical Self-Aligning Roller Bearings 21310-21313

Industrial machinery operators know the cost of unexpected downtime—hours lost to bearing failures, production delays, and emergency repairs. Misaligned shafts or heavy radial loads often lead to premature wear, especially with low-quality bearings. Sourcing reliable replacements with the right precision and load capacity can be a challenge, particularly when facing long lead times or minimum order requirements that don’t fit your urgent needs.

Engineered for Reliable Performance in Demanding Machinery

Our High Precision Spherical Self-Aligning Roller Bearings 21310, 21311, 21312, and 21313 are designed to solve these pain points. As an integrated manufacturer with ISO9001 and ISO14001 certifications, we ensure each bearing meets P0-P4 precision standards and Z2-Z4 noise grades, critical for smooth operation in machine tools, reducers, and printing equipment. With a 1pc MOQ for standard items and 10-15 day bulk delivery, we support both emergency repairs and regular stock replenishment, eliminating the need to overorder to meet high minimums.

Optimal Performance in Heavy-Load, Misalignment-Prone Environments

Self-aligning roller bearings excel in applications where shaft misalignment is common—up to 2° angular misalignment—thanks to their spherical outer ring raceway. The double-row design handles high radial loads (up to 60° contact angle) and moderate axial loads, making them ideal for heavy-duty machinery like excavators, agricultural harvesters, and industrial gearboxes. Whether operating in dusty construction sites or precision manufacturing facilities, these bearings maintain stability and extend equipment life by reducing stress on shafts and housings.

Technical Features That Drive Machinery Efficiency

Key technical specifications directly impact performance: Precision ratings from P0 (standard) to P4 (high precision) ensure minimal runout and vibration, critical for CNC machine spindles and high-speed applications. Clearance options (C0, C3, C4) allow customization for temperature expansion and preload requirements—C3 and C4 clearances accommodate thermal growth in motors and reducers, while C0 suits standard operating conditions. Cage materials (steel or brass) offer durability; brass cages provide better heat resistance and stability at higher speeds, making them suitable for continuous-duty industrial equipment.

Why Cutting Corners on Bearings Costs More in the Long Run

Low-quality bearings may save upfront costs but often fail prematurely, leading to unplanned downtime, repair expenses, and potential damage to expensive machinery. Our bearings, manufactured with high-grade bearing steel and strict quality control, deliver consistent performance with a 12-month global warranty. For example, a single bearing failure in a printing press can halt production for days, costing thousands in lost revenue—far exceeding the price difference between genuine and substandard parts. We prioritize total cost of ownership, ensuring our bearings reduce long-term maintenance and replacement frequency.

Your Trusted Partner for Bearing Solutions Since 2005

Packaging & Shipping

• Secure carton pallet packaging to prevent damage during transit
• 10-15 day delivery for bulk orders; sample lead time 3-5 days
• Multiple shipping options: DHL, FedEx, UPS, air, or sea freight
• Real-time tracking provided for all shipments
• 1pc minimum order quantity for standard models, supporting small-batch and emergency needs

Get Your Machinery Back to Peak Performance

Don’t let bearing issues slow down your operations. Whether you need a single replacement for a broken machine or a bulk order for scheduled maintenance, our High Precision Spherical Self-Aligning Roller Bearings are ready to ship. Send us your bearing model (21310, 21311, 21312, or 21313), application details, and quantity today—we’ll provide a quote within 24 hours and help you minimize downtime.

Frequently Asked Questions