Product Overview: The H 3944 Adapter Sleeve
The H 3944 is a high-quality adapter sleeve designed to securely mount bearings with a tapered bore onto a cylindrical shaft. Specifically, this sleeve facilitates the mounting of a bearing with a 220 mm tapered bore onto a 200 mm diameter shaft. As a crucial component in our Adapter Sleeves category, the H 3944 is part of the extensive H 3900 Series. It provides a simple, reliable, and cost-effective method for locating bearings on a shaft, eliminating the need for a specially machined shaft shoulder. This sleeve comes complete with a corresponding lock nut and lock washer for a secure and complete assembly.
Key Features of the H 3944
- Simplified Mounting: Allows for easy installation of tapered bore bearings on standard cylindrical shafts.
- Precise Fit: Features a tapered outer surface that perfectly matches the bearing's inner ring bore for a firm, concentric grip.
- Complete Assembly: Supplied with a high-quality lock nut (KM 44) and lock washer (MB 44) to securely fasten the bearing in place.
- Slit Design: The sleeve is slit, allowing it to clamp down firmly on the shaft when the lock nut is tightened.
- Durable Construction: Manufactured from high-grade steel to withstand high mounting forces and operational loads.
- Versatility: Enables bearings to be located at any position on a plain shaft, offering flexibility in machine design.
Common Applications
Adapter sleeves like the H 3944 are essential in heavy-duty industrial environments where robust bearing arrangements are required. Common applications include:
- Conveyor Systems: Used to mount bearings for large pulleys and rollers.
- Industrial Fans and Blowers: Secures bearings in large air-handling units and ventilation systems.
- Mining and Quarrying Equipment: Essential for crushers, screening machines, and conveyors that operate under extreme conditions.
- Pulp and Paper Mills: Provides reliable bearing mounting for rollers and processing drums.
- Agricultural Machinery: Used in large implements like combines and harvesters where shafts are long and may have wider tolerances.
- Power Transmission Assemblies: Secures bearings in gearboxes, plummer blocks, and other transmission systems.
Benefits of Using the H 3944 Adapter Sleeve
- Cost-Effective: Eliminates the need for expensive and complex machining of shaft shoulders or steps.
- Enhanced Reliability: Provides a secure, full-contact fit between the bearing and shaft, preventing fretting corrosion and ensuring reliable operation.
- Easy Installation and Dismounting: The sleeve simplifies both the mounting and dismounting process, reducing maintenance time and labor costs.
- Wider Shaft Tolerances: Allows for the use of commercial-grade shafts with wider dimensional tolerances, simplifying procurement.
- Improved Bearing Life: Ensures proper bearing alignment and support, which contributes to a longer operational lifespan.
- Design Flexibility: Allows bearings to be positioned precisely anywhere along a shaft without the constraints of fixed shoulders.
