Product Overview
This page provides a detailed engineering and procurement reference for the 24156 CA/W33, intended for buyers verifying exact bearing specifications and functional interchangeability before ordering.
As a cornerstone for large-scale heavy industrial systems, the 24156 CA/W33 Spherical Roller Bearing is specifically developed by ZQM Bearings to sustain continuous operation in high-stress environments where maximum load density is required. Primarily utilized in paper mill drying sections, large gearboxes, and steel rolling mill supports, this model is the engineering choice for procurement professionals seeking a reliable equivalent that meets rigorous ISO standards for load distribution and fatigue resistance. Its dual-row symmetrical roller design and specialized 180 mm width enable the 24156 CA/W33 to manage immense radial loads (Cr=2650 kN) while accommodating combined axial forces. The precision-machined solid brass cage ensures internal clearance optimization is maintained even under severe vibration or shaft deflection.
Design & Engineering Advantages
The 24156 CA/W33 is synthesized from premium vacuum-degassed GCr15SiMn bearing steel. This material selection is a calculated engineering decision targeting the mitigation of fatigue spalling by controlling oxygen content to sub-5 ppm levels, effectively reducing non-metallic inclusions. In high-load industrial bearings, steel purity directly correlates to the fatigue limit, and our controlled manufacturing processes ensure that the 24156 CA/W33 maintains superior Hertzian contact stress distribution across the rollers and raceways.
The internal geometry is optimized with a precision-machined solid brass cage (CA) and wide-series symmetrical rollers. This structure provides exceptional shock and vibration stability, as the brass cage offers higher thermal stability and lower friction torque compared to pressed steel alternatives, preventing cage pocket fracture during continuous, high-impact operation. The 180 mm width (B) ensures a massive load footprint, allowing the bearing to achieve its robust 5100 kN static load capacity. Furthermore, the W33 feature provides a circumferential lubrication groove and three holes, ensuring relubrication continuity directly to the internal contact zones. This design effectively manages boundary lubrication risks and heat generation, maintaining dimensional stability even at the limiting speed of 710 r/min in oil environments.
Key Features
- Vacuum-degassed GCr15SiMn steel for maximum raceway fatigue life.
- Precision-machined solid brass cage (CA) for extreme vibration stability.
- Ultra-wide 241-series profile (180 mm) for maximum radial load density.
- Integrated W33 lubrication feature for continuous relubrication reliability.
- Advanced internal clearance optimization to compensate for shaft misalignment.
Boundary Dimensions
| Designation | 24156 CA/W33 |
| Bore diameter (d) | 280 mm |
| Outside diameter (D) | 460 mm |
| Width (B) | 180 mm |
Procurement Selection
From a TCO (Total Cost of Ownership) perspective, the procurement of the 24156 CA/W33 represents a strategic decision to prioritize uptime in critical large-scale systems. Engineering teams should prioritize this brass-cage model over standard steel-cage variants for applications involving intense vibration or sudden impact loads, such as primary crushing stages or large gearboxes. The functional interchangeability of the 24156 CA/W33 with brands like SKF and FAG ensures that procurement verification is straightforward, matching exactly the dynamic ratings required for heavy-duty replacements. ZQM Bearings conducts batch-to-batch dimensional audits to ensure every 24156 CA/W33 meets the required load criteria (Cr=2650 kN), effectively neutralizing the risk of early-stage permanent deformation in stationary high-load phases.
Cross-reference & Replacement
| ZQM Model | Reference Brand | Reference Model | Equivalence Basis |
|---|---|---|---|
| 24156 CA/W33 | SKF | 24156 CC/W33 | Dimensional conformity |
| 24156 CA/W33 | FAG | 24156-E1-K30-M | Installation interchangeability |
| 24156 CA/W33 | NSK | 24156CAMKE4 | Internal geometry compatibility |
ZQM Bearings ensures that our 24156 CA/W33 is fully interchangeable with global ISO standards for replacement evaluation. Always verify the shaft abutment (da min=298 mm) and housing abutment (Da max=442 mm) dimensions during engineering选型 to ensure structural integrity and load path continuity.
Typical Industrial Applications
- Paper Mill Drying and Press Cylinders
- Heavy-duty Industrial Gearboxes
- Steel Rolling Mill Drives and Stand Supports
- Large Conveyor Head and Tail Pulleys
- Vertical Raw Mills in Cement Production
Service Life & Reliability
The reliability of the 24156 CA/W33 is grounded in advanced L10 life calculation logic, where the relationship between raceway honing and steel purity is maximized. By reducing friction torque through precision finishing, the bearing maintains its heat treatment stability, preventing dimensional drift. High-load industrial environments demand that the bearing resists subsurface-initiated fatigue; ZQM achieves this by controlling inclusion levels, ensuring that the 24156 CA/W33 achieves its full theoretical fatigue life. The robust 5100 kN static load rating (C0) provides a significant safety factor against permanent deformation during stationary vibration or impact loads.
Installation & Lubrication Notes
Success in heavy-duty applications depends heavily on precise misalignment compensation. The 24156 CA/W33 can typically accommodate up to 2 degrees of shaft deflection; exceeding this limit will trigger edge loading and early failure. Relubrication via the W33 feature is mandatory for continuous operation, particularly at the 710 r/min oil speed limit. Incorrect grease selection or over-greasing is a primary cause of thermal seizure; ensure the fill level matches the industrial service cycle. ZQM engineers recommend monitoring vibration stress regularly to protect the solid brass cage integrity in harsh mining or steel mill environments.
Frequently Asked Questions
How does material purity influence the fatigue resistance of 24156 CA/W33?
Material purity is the primary determinant of the L10 fatigue life in the 24156 CA/W33. By using vacuum-degassed steel, ZQM minimizes non-metallic inclusions that otherwise act as stress concentration points under the contact raceway surface. If inclusions are present, the constant Hertzian contact stress will trigger subsurface cracks, leading to premature fatigue spalling. High purity ensures that the 24156 CA/W33 maintains its dimensional stability and load-carrying capacity over millions of stress cycles in large industrial systems.
Why choose a solid brass cage (CA) for the 24156 model in gearboxes?
The solid brass cage in the 24156 CA/W33 provides higher structural rigidity and superior heat dissipation compared to pressed steel cages. In high-torque gearboxes where shaft deflection and vibration are constant, the brass cage prevents pocket fracture and maintains lubrication reliability. The precision-machined CA design ensures that internal clearance optimization is maintained even during thermal expansion phases, making it the preferred choice for critical industrial drives.
What is the significance of the Y0=1.7 factor in the 24156 CA/W33?
The calculation factor Y0=1.7 is critical for calculating the static equivalent load for the 24156 CA/W33. It represents the bearing’s axial load management efficiency relative to its massive radial capacity when stationary. In procurement verification, matching the Y-factors (Y1=1.8, Y2=2.6) ensures that the bearing will perform predictably under the combined axial and radial load paths typical in heavy industrial machinery.
How does the 24156 CA/W33 manage heavy radial loads in limited axial space?
The 24156 CA/W33 belongs to the 241 wide-series, which maximizes the roller diameter and effective contact length within a 180 mm width (B). This results in a high dynamic load rating (Cr=2650 kN) compared to standard-width series. The self-aligning property ensures that even under shaft deflection, the load is distributed evenly across both rows of rollers, preventing localized stress peaks and extending boundary lubrication life.
What are the critical installation abutment dimensions for the 24156 CA/W33?
For a 24156 CA/W33 installation, the shaft abutment (da min) should be 298 mm, and the housing abutment (Da max) should not exceed 442 mm. If these dimensions are not respected, the bearing’s load path will be compromised, leading to vibration stress or axial drift. The fillet radius (ra max=4 mm) must be strictly controlled to ensure the bearing sits flush against the shoulder, maintaining its precise axial positioning for long-term service life.
Related Bearing Models
- 24152 CA/W33
- 24160 CA/W33
- 24056 CA/W33
- 23156 CA/W33
- 23256 CA/W33
Technical Support & Global Inquiry
ZQM Bearings supports long-term supply programs for international OEMs and distributors, emphasizing batch-to-batch dimensional consistency and controlled manufacturing processes. Our engineering team focuses on standardized quality control across repeated production batches to ensure consistent fit and performance for overseas shipments. Standardized export packaging and anti-rust surface treatment are provided for all overseas shipments to maintain the dimensional integrity of your order. ZQM engineers provide 24/7 technical selection support to ensure the selected bearing solution matches your specific industrial application needs. Request a customized quote for bulk orders or OEM-specific bearing requirements to support your high-performance projects.
