Product Overview: The AHX 328 Withdrawal Sleeve
The AHX 328 is a high-precision withdrawal sleeve designed to facilitate the easy dismounting of bearings with a tapered bore from a cylindrical shaft seat. Specifically engineered for shafts with a 140mm diameter, this sleeve is an essential component in many heavy-duty industrial applications. As part of our comprehensive range of Sleeves, the AHX 328 belongs to the AHX 3200 Series of Withdrawal Sleeves, ensuring standardized dimensions and reliable performance. Its primary function is to be extracted from between the bearing and the shaft, which releases the interference fit and allows the bearing to be removed with minimal effort and without causing damage.
Withdrawal sleeves are crucial for maintenance efficiency, allowing for quicker and safer bearing replacement. They are used in conjunction with a lock nut (or a specialized hydraulic nut for larger sizes) that is tightened against the bearing's inner ring to push the sleeve out during dismounting. This makes them indispensable for large machinery where direct access is limited and component integrity is paramount.
Key Features of the AHX 328
- Precision Machined: Manufactured to tight tolerances to ensure a secure and accurate fit on 140mm shafts.
- Tapered Design: Features a 1:12 tapered outer surface, compatible with standard tapered bore bearings.
- Slotted Construction: The sleeve is slit longitudinally, allowing for contraction to release the fit during dismounting.
- High-Strength Steel: Constructed from durable, high-quality steel to withstand the high pressures involved in mounting and dismounting.
- Simplified Dismounting: Specifically designed to make the removal of large bearings a straightforward and safe process.
- Shaft Protection: Prevents damage to the shaft seat during bearing removal, preserving the shaft for future use.
Common Applications
- Mining and Quarrying: Used in crushers, conveyor pulleys, and vibrating screens where bearings undergo heavy loads and require regular maintenance.
- Pulp and Paper Industry: Essential for rollers and drums in papermaking machines, facilitating efficient maintenance schedules.
- Large Industrial Fans & Blowers: Enables secure mounting and easy dismounting of bearings in large air-handling units.
- Steel Manufacturing: Applied in rolling mills and continuous casting machinery for reliable operation and quick component changes.
- Power Generation: Used in turbines, generators, and large gearboxes where reliability and minimal downtime are critical.
- Construction Equipment: Found in heavy machinery like excavators and cranes, simplifying the maintenance of critical rotating parts.
Benefits of Using the AHX 328
- Reduced Maintenance Time: Significantly speeds up the process of bearing removal, minimizing equipment downtime.
- Enhanced Safety: Provides a controlled method for dismounting heavy bearings, reducing the risk of accidents.
- Cost-Effective Solution: Eliminates the need for complex and expensive tapered shafts, allowing the use of standard cylindrical shafts.
- Prevents Component Damage: Protects both the bearing and the shaft from damage during maintenance operations.
- Improved Equipment Reliability: Ensures a consistent and secure fit, which contributes to the overall reliability of the machinery.
- Versatility: Allows for the flexible use of bearings with tapered bores across various applications with straight shafts.
