23964 CA/W33 Spherical Roller Bearing 320×440×90 Industrial Grade Bearing

The 23964 CA/W33 Spherical Roller Bearing is an engineering marvel crafted to breathe life into the most demanding heavy machinery. When you hold this industrial-grade component, the cool, unyielding touch of the high-purity bearing steel speaks volumes about its structural integrity and meticulous craftsmanship. The flawlessly ground spherical outer ring raceway gleams with a polished finish, reflecting a manufacturing process obsessed with precision. As machinery operates, this bearing emits a steady, low-decibel hum, a sonic testament to its friction-reducing internal geometry and perfectly balanced symmetrical rollers. By integrating this component into your mechanical infrastructure, you are not merely replacing a part; you are actively extending the operational lifespan of your entire system. The robust brass cage ensures that even under brutal shock loads, the rollers remain perfectly aligned, preventing catastrophic edge stresses. This translates directly to minimized downtime, reduced maintenance expenditures, and a smoother, more reliable production cycle that keeps your operations highly competitive in a demanding industrial landscape.

Design & Construction

The 23964 CA/W33 bearing features a spherical outer ring raceway, two rows of symmetrical spherical rollers, and a robust cage. The spherical raceway allows the bearing to self‑align, compensating for up to 1.5°–3° of angular misalignment, which reduces edge stresses and prolongs service life.

Common suffixes:

• CA: Symmetrical rollers guided by a machined brass cage. Provides high load capacity, good shock resistance, and low friction.

• W33: Oil grooves and three lubrication holes in the outer ring enable easy relubrication without dismantling the equipment.

• C3: Increased internal radial clearance for applications with higher operating temperatures or interference fits.

Product Specifications

Understanding the precise technical parameters of your mechanical components is crucial for ensuring optimal system performance and safety. The following specifications outline the exact dimensional and load-bearing capabilities of the 23964 model. These figures are derived from rigorous testing environments to guarantee that the component will perform flawlessly under extreme radial and axial stresses. Please review these critical metrics to confirm compatibility with your specific engineering requirements.

Note: Values may vary by brand (SKF, FAG, NSK, TIMKEN, etc.).

Same Type – Related Bearing Models

The 23964 CA/W33 belongs to the spherical roller bearing family. Below are common series and specific models of the same type, particularly within the 23900 series (narrow cross‑section, high capacity) and other popular spherical roller bearing series.

23900 Series (Compact, High Capacity)

23000 Series (Standard Width)

24000 Series (Extra Heavy, Wide Width)

Key Features & Highlights

Engineered to conquer the most punishing industrial environments, this bearing integrates advanced design elements that directly enhance your operational efficiency. Every feature is meticulously crafted to solve common mechanical failures.

• Exceptional Radial Load Mastery: The optimized internal geometry allows the unit to absorb massive shock loads without faltering, protecting your delicate shaft assemblies from premature wear and sudden catastrophic failures.

• Intelligent Self-Alignment: Capable of compensating for shaft deflections and mounting inaccuracies, this feature drastically simplifies the installation process and prevents destructive edge loading that plagues rigid bearings.

• Space-Optimized Architecture: The narrow width profile relative to its substantial bore size grants engineers the freedom to design more compact, space-saving equipment layouts without sacrificing rotational power.

• Continuous Lubrication Flow: The integrated W33 design, featuring a specialized oil groove and three precision-drilled holes, facilitates continuous grease replenishment, dramatically extending the intervals between mandatory maintenance shutdowns.

• Thermal and Dimensional Stability: Subjected to advanced heat treatment processes, the steel structure maintains its exact dimensions even when exposed to severe temperature fluctuations during continuous high-speed rotation.

Technical Specifications & Fit

For procurement professionals and engineering teams, component compatibility is the ultimate priority. The 23964 CA/W33 is engineered strictly according to ISO dimensional standards, ensuring it serves as a flawless drop-in replacement for your existing setups.

• Exact Dimensional Accuracy: With a precise 320mm bore, 440mm outer diameter, and 90mm width, it guarantees a snug, vibration-free fit on your main shafts, eliminating micro-movements that cause fretting corrosion.

• Universal Interchangeability: Designed to mirror the exact specifications of globally recognized models, allowing you to transition your supply chain seamlessly without modifying your machinery or re-engineering your housings.

• Optimized Weight Distribution: Weighing approximately 41 to 42 kg, the unit provides the necessary mass for heavy-duty stability while remaining manageable for your maintenance crews during installation procedures.

• Versatile Clearance Options: Available in standard (CN) or increased internal radial clearance (C3), making it perfectly adaptable for applications involving high operating temperatures or tight interference fits.

Material & Quality Assurance

The longevity of heavy machinery is intrinsically linked to the metallurgical purity of its moving parts. We refuse to compromise on raw materials, utilizing only the finest high-purity Gcr15 chrome steel to forge these resilient components.

• Premium Chrome Steel Construction: The high-carbon, chromium-enriched steel offers unparalleled resistance to subsurface fatigue, ensuring the raceways remain unblemished over millions of rotational cycles.

• Advanced Heat Treatment: Through carefully controlled thermal cycling, the steel achieves an optimal balance of surface hardness and core toughness, preventing brittle fractures under sudden impact loads.

• High-Precision Manufacturing: Machined to stringent ABEC-3 and ABEC-5 tolerance classes, the internal friction is minimized, resulting in cooler running temperatures and significantly less energy consumption for your motors.

• Certified Excellence: Every batch is backed by comprehensive international quality system certifications, including ISO9001, SGS, and CE, providing you with documented proof of reliability and safety compliance.

• Rigorous Factory Inspection: Prior to dispatch, each unit undergoes meticulous ultrasonic and dimensional testing, accompanied by detailed factory inspection reports to guarantee zero defects upon arrival at your facility.

Design Features & Application

Harsh operating environments demand components that can adapt to structural stress. This bearing is specifically tailored to thrive in sectors where lesser components would quickly disintegrate under the immense pressure.

• Heavy-Duty Brass Cage (CA): The machined brass cage is highly resistant to the intense centrifugal forces and aggressive vibrations found in mining crushers, vibrating screens, and mineral processing equipment.

• On-the-Fly Maintenance (W33): The outer ring's lubrication groove and access holes allow maintenance crews to inject fresh lubricant directly into the roller path without halting production, a critical advantage for continuous paper making machinery.

• Dynamic Misalignment Compensation: The spherical internal profile effortlessly absorbs 1.5° to 3° of angular misalignment, a vital safeguard for wind turbine main shafts that constantly battle unpredictable aerodynamic loads.

• Vibration Dampening: The symmetrical roller design evenly distributes the load across the raceway, dampening acoustic noise and mechanical resonance in large industrial gearboxes and marine propulsion systems.

Inventory & Fast Delivery

We understand that unexpected equipment downtime translates to severe financial hemorrhage. To protect your production schedules, we have optimized our warehousing and logistics infrastructure to ensure rapid deployment of critical components.

• Massive Ready-to-Ship Stock: By maintaining a vast inventory of standard sizes, we eliminate the agonizing lead times typically associated with heavy industrial manufacturing and large-scale procurement.

• Flexible Order Quantities: Whether you require a single replacement unit for an emergency repair or a scheduled bulk delivery, our system accommodates low minimum order quantities seamlessly.

• Expedited Global Dispatch: Leveraging strong partnerships with premier international couriers, we facilitate rapid 1-3 day or 3-7 day global transit times directly to your loading dock.

• Factory-Direct Efficiency: Bypassing unnecessary middlemen allows us to process, pack, and dispatch your critical components with unprecedented speed, accuracy, and cost-effectiveness.

• Secure Transit Packaging: Every unit is coated in premium anti-rust compounds and sealed in robust, impact-resistant packaging to ensure it arrives in pristine, ready-to-install condition regardless of the transit distance.

Customization & OEM Capabilities

Standardized solutions do not always align with cutting-edge engineering projects. As a highly adaptable manufacturer, we provide comprehensive flexible production services to meet your exact proprietary specifications and branding requirements.

• Precision Clearance Tuning: We can expertly calibrate internal radial clearances (such as C4 or specialized tolerances) to match the extreme thermal expansion rates of your specific operating environment.

• Bespoke Dimensional Adjustments: Our advanced machining centers are fully equipped to modify standard profiles or produce entirely non-standard dimensions based on your exclusive engineering blueprints.

• Comprehensive OEM Services: We empower your brand by offering complete private labeling solutions, engraving your proprietary part numbers and logos directly onto the steel with laser precision.

• Tailored Packaging Solutions: Choose from an array of custom packaging options, including individual branded color boxes, heavy-duty anti-rust plastic tubes, or fumigation-free wooden pallets designed for streamlined warehouse integration.

After-Sales & Technical Support

Your procurement journey does not end at delivery; it is merely the beginning of our partnership. We provide a robust safety net of technical expertise to ensure your newly acquired components deliver maximum return on investment.

• Comprehensive Warranty Protection: Every unit is backed by a stringent factory warranty, guaranteeing performance and offering a straightforward, hassle-free replacement policy for any manufacturing anomalies.

• Round-the-Clock Engineering Consultations: Our seasoned team of mechanical engineers is available 24/7 to provide immediate guidance on complex installation procedures and cross-reference matching.

• Strategic Lubrication Guidance: We provide detailed, data-backed recommendations on the optimal grease or oil formulations required to maximize the lifespan of your component under your specific load conditions.

• Proactive Troubleshooting: Should your machinery experience unexpected vibrations or thermal spikes, our diagnostic specialists will assist you in identifying root causes and implementing rapid corrective measures.

Why Choose Us

Selecting the right manufacturing partner is a strategic decision that impacts your entire operational ecosystem. We stand apart in the global market through an unwavering commitment to engineering excellence and client-centric service.

• Unrivaled Industry Expertise: Decades of focused experience in metallurgical science and precision machining allow us to produce components that consistently outperform conventional alternatives in longevity and reliability.

• Stringent Quality Control: Our zero-tolerance policy for defects means every single unit is subjected to a battery of stress tests, ensuring absolute reliability before it ever leaves our facility.

• Cost-Effective Excellence: By optimizing our production lines and sourcing raw materials at scale, we deliver world-class engineering at a highly competitive value point, immediately improving your bottom line.

• Dedicated Account Management: You will be assigned a specialized procurement liaison who understands your industry's unique demands, ensuring seamless communication from initial inquiry to final installation.

• Sustainable Manufacturing Practices: We are committed to environmentally responsible production methods, utilizing energy-efficient machinery and comprehensive recycling protocols to minimize our industrial footprint.

Frequently Asked Questions (FAQ)

To assist your engineering and procurement teams in making an informed decision, we have compiled detailed answers to the most complex technical inquiries regarding the 23964 model.

What is the primary advantage of the machined brass cage (CA suffix) in this model?

The machined brass cage offers superior tensile strength and excellent sliding properties compared to standard stamped steel cages. This significantly reduces internal friction and heat generation, making it highly resilient against the severe shock loads and rapid acceleration forces commonly experienced in heavy industrial crushers and large gearboxes.

How does the W33 lubrication feature improve maintenance workflows?

The W33 designation indicates the presence of a continuous annular groove and three precisely drilled lubrication holes on the outer ring. This design allows maintenance personnel to inject grease directly into the center of the roller assembly while the machine is still operating, ensuring even distribution and eliminating the need for costly, time-consuming equipment teardowns.

Can this component effectively handle axial loads?

Yes. While primarily designed for immense radial loads, the specific angular contact of the two rows of symmetrical spherical rollers allows the bearing to accommodate moderate axial loads in both directions. This dual-load capacity is essential for applications like wind turbine main shafts where multi-directional forces are constantly present.

What dictates the choice between standard (CN) and C3 internal clearance?

The choice depends entirely on your operating environment. Standard (CN) clearance is suitable for typical ambient temperatures and standard shaft fits. However, if your application involves extreme heat that causes shaft expansion, or requires a very tight interference fit, the C3 (increased clearance) option provides the necessary internal room to prevent the rollers from seizing during operation.

How does the self-aligning capability impact the installation process?

The spherical raceway allows the inner ring and rollers to pivot up to 3 degrees relative to the outer ring. This automatically compensates for unavoidable shaft deflections or minor housing misalignments that occur during installation or heavy operation. Consequently, it reduces the precision burden on your installation technicians and prevents localized edge stresses that cause premature failure.