Product Overview: The KM 21 Lock Nut
The KM 21 is a precision-engineered lock nut, an essential component within our range of Bearing Accessories. Specifically designed for securing bearings and other mechanical components onto a shaft, it prevents loosening caused by vibration or rotation. The KM 21 features a standard metric thread of M105x2 and is designed to be used with an MB 21 lock washer to create a secure and reliable fastening system. This type of lock nut is crucial for mounting bearings with a tapered bore onto adapter sleeves like the H 221 or H 321, ensuring correct positioning and axial load management.
Key Features of the KM 21 Lock Nut
- Precision Machined Threads: Features a metric M105x2 thread for a secure and accurate fit on shafts or adapter sleeves.
- Four Locking Slots: Equipped with four equally spaced slots on its circumference, allowing for easy tightening and securing with a hook or impact spanner.
- System Compatibility: Designed for use with an MB 21 lock washer, which engages with a keyway on the shaft to prevent the nut from backing off.
- High-Quality Steel Construction: Manufactured from durable steel to withstand high tightening forces and ensure long-term operational reliability.
- Simple and Effective Design: Provides a straightforward and highly effective method for axially securing bearings and other machine parts.
- Reusability: Can be reused multiple times provided it is not damaged, making it a cost-effective solution for maintenance and assembly.
Common Applications
- Bearing Assemblies: Widely used to secure bearings onto adapter sleeves (H 221, H 321) and withdrawal sleeves.
- Industrial Gearboxes: Essential for locating gears and bearings on shafts, preventing axial movement during operation.
- Electric Motors and Pumps: Secures rotor and impeller assemblies, ensuring stable and reliable performance.
- Conveyor Systems: Used in pulley and roller assemblies to maintain component position and tension.
- Agricultural Machinery: Applied in various rotating shaft applications in equipment like combines, balers, and tractors.
- Automotive and Heavy Vehicles: Used in transmission systems, wheel hubs, and driveline components.
- General Machine Building: A fundamental component for any application requiring the secure axial location of parts on a shaft.
Benefits of Using the KM 21 Lock Nut
- Enhanced Reliability: Provides a secure locking mechanism that prevents components from loosening, increasing the overall reliability of the machinery.
- Precise Adjustment: Allows for accurate adjustment of bearing clearance and preload, which is critical for optimal performance and bearing life.
- Prevents Shaft Damage: Secures components without damaging the shaft threads, unlike methods that rely solely on set screws.
- Easy Installation and Removal: The design simplifies the process of mounting and dismounting bearings, reducing maintenance time and effort.
- Cost-Effective Solution: Offers a reliable and affordable method for securing components compared to more complex locking systems.
- Improved Safety: By preventing critical components from coming loose, the KM 21 contributes to the safe operation of rotating equipment.
