Product Overview: The H 3988 Adapter Sleeve
The H 3988 is a high-quality adapter sleeve designed for mounting bearings with a tapered bore onto cylindrical shafts with a 440mm diameter. As a critical component in our H 3900 Series of Adapter Sleeves, it provides a simple, reliable, and cost-effective method for securing large bearings. This complete assembly, which includes the slotted sleeve, a corresponding lock nut, and a lock washer, ensures a tight and secure fit, preventing axial movement and simplifying the installation process. By using an adapter sleeve, manufacturers can use commercially available straight shafts, avoiding the expense and complexity of machining stepped shafts.
Manufactured from high-strength steel and precision-engineered to meet stringent industry standards, the H 3988 is built for durability in heavy-duty industrial environments. Its design facilitates both easy mounting and dismounting, which is essential for efficient machinery maintenance and repair. Explore our comprehensive range of Sleeves and Bearing Accessories to find the perfect solution for your application.
Key Features of the H 3988
- Complete Mounting Solution: Supplied as a full set with a sleeve, lock nut, and lock washer for immediate installation.
- For 440mm Shafts: Precisely engineered to fit a 440mm cylindrical shaft, ensuring a secure grip.
- Simplifies Mounting: Allows bearings with a tapered bore to be easily located and secured on plain shafts.
- Slotted Design: The sleeve is slit, allowing it to contract and clamp firmly onto the shaft when the lock nut is tightened.
- High-Quality Material: Constructed from durable, high-grade steel to withstand high loads and harsh operating conditions.
- Cost-Effective: Eliminates the need for expensive and complex stepped shafts, reducing overall manufacturing costs.
Common Applications
- Mining and Quarrying: Used in crushers, vibrating screens, and conveyor pulleys where robust bearing arrangements are essential.
- Pulp and Paper Mills: Ideal for mounting bearings on large rollers and drums in paper processing machinery.
- Steel Manufacturing: Applied in rolling mills, continuous casters, and other heavy equipment requiring secure bearing fixation.
- Industrial Fans and Blowers: Ensures stable and secure mounting for bearings in large-scale ventilation and air-handling systems.
- Construction Equipment: Found in heavy machinery like excavators and cranes where components are subjected to high shock loads.
- Marine Propulsion Systems: Provides a reliable method for mounting bearings on propeller shafts and in gearbox assemblies.
Benefits of Using the H 3988 Sleeve
- Enhanced Reliability: Provides a secure, 360-degree grip on the shaft, reducing fretting corrosion and improving operational stability.
- Simplified Assembly: The sleeve can be positioned anywhere on a smooth shaft, simplifying the alignment and location process.
- Reduced Maintenance Time: Facilitates quick mounting and dismounting of bearings, minimizing downtime during maintenance or replacement.
- Increased Shaft Life: Protects the shaft surface from damage that can occur with direct bearing mounting.
- Versatility: Allows for the use of standard bearings on a wide range of plain shafts, offering greater design flexibility.
- Improved Cost Efficiency: Using standard cylindrical shafts instead of custom-machined stepped shafts significantly lowers production and inventory costs.
