Threaded Shaft Collars
A threaded shaft collar is a mechanical component designed to fit around a shaft and provide a stopping point or bearing surface for other components. It is called a “threaded” shaft collar because it has threads on its inner diameter that allow it to be screwed onto a threaded shaft. The threaded shaft collar typically consists of a cylindrical body that is split into two or more sections, with screws or other fasteners that can be tightened to secure the collar in place on the shaft.
Threaded Shaft Collars
Threaded shaft collars are mechanical components used to secure and position components on a shaft. They are typically made of metal or plastic and consist of a cylindrical body with a threaded bore that allows them to be tightened down onto a shaft. They may also have set screws or clamping mechanisms to provide additional holding force.
Threaded shaft collars are commonly used in machinery and equipment to hold bearings, pulleys, gears, and other components in place. They can also be used to create stops or limit switches on a shaft or to provide a mounting point for sensors or other devices.
▍Types of Threaded Shaft Collars
Threaded shaft collars share the same performance and benefits as their round bore counterparts while providing additional features. Threaded collars have higher axial holding power than round bore shaft collars while offering easier installation and adjustment than solid ring locking devices. Each threaded shaft collar ensures precise and burr-free threads to allow for easy installation and removal, proper fit, and extended shaft life. Threaded shaft collars are manufactured in 1215 lead-free steel with a black oxide finish and 303 stainless steel. Bore sizes range from 1/8″ to 2-1/4″ and 4mm to 30mm.
▍Benefits of Threaded Shaft Collars
1. Secure shaft positioning: Threaded shaft collars provide a secure and reliable method for positioning components on a shaft. The threaded design allows for a tight fit and prevents slippage or movement of the component along the shaft.
2. Easy installation and removal: Threaded shaft collars are designed for easy installation and removal without the need for special tools or equipment. This makes them ideal for quick and efficient assembly and disassembly of machinery or equipment.
3. Flexible adjustment: Threaded shaft collars can be easily adjusted along the length of the shaft to accommodate changes in the position or size of components. This flexibility allows for easy customization and adaptability of machinery or equipment.
4. Cost-effective: Threaded shaft collars are a cost-effective solution for securing components on a shaft, compared to other methods such as welding or press-fitting. They are also reusable and can be used multiple times.
5. Durable and reliable: Threaded shaft collars are typically made from high-quality materials such as steel or aluminum, which provide durability and reliability in a wide range of applications. They can also withstand high levels of torque and vibration without slipping or loosening.
▍Threaded Shaft Collars Vs Hex Bore Shaft Collars
Threaded shaft collars and hex bore shaft collars are both types of shaft collars that are used to prevent shafts from rotating. However, there are some key differences between the two types of shaft collars.
- Threaded shaft collars: Threaded shaft collars have a threaded bore that matches with a threaded shaft. This allows the shaft collar to be tightened or loosened by turning the threaded nut. Threaded shaft collars are often used in applications where precise preload and location settings are required.
- Hex bore shaft collars: Hex bore shaft collars have a hexagonal bore that fits over a hexagonal shaft. Hex bore shaft collars are typically used in applications where high torque is required. They are also a good option for applications where the shaft is not threaded.
Here is a table that summarizes the key differences between threaded shaft collars and hex bore shaft collars:
| Feature | Threaded Shaft Collars | Hex Bore Shaft Collars |
|---|---|---|
| Bore | Threaded | Hex |
| Torque capacity | Lower | Higher |
| Preload and location settings | Precise | Not as precise |
| Shaft type | Threaded | Not threaded |
| Applications | Precision applications, location settings | High torque applications, shafts that are not threaded |
Ultimately, the best type of shaft collar for your application will depend on your specific requirements. If you need a shaft collar that can provide precise preload and location settings, then a threaded shaft collar is a good option. If you need a shaft collar that can handle high torque, then a hex bore shaft collar is a better choice.
 |
 |
| Threaded Shaft Collars | Hex Bore Shaft Collars |
▍Threaded Shaft Collars Common Applications
Threaded shaft collars are used in a wide range of mechanical applications where components need to be secured on a shaft. Here are some common applications:
(1) Precision automation: Threaded shaft collars are often used in precision automation applications, such as end-stop positioners, stroke limiters, gear and bearing nuts, drive shafts, and spring tensioners. They provide a high degree of accuracy and precision, which is essential in these types of applications.
(2) Laboratories: Threaded shaft collars are also used in laboratories, where they are used to position and align scientific equipment, clamps, and frames. They provide a reliable and secure way to hold equipment in place, which is essential for accurate and precise measurements.
(3) Medical industry: Threaded shaft collars are used in the medical industry to position and align medical devices, such as ceiling pivot arms, instrument stands, and hospital beds. They provide a safe and secure way to hold equipment in place, which is essential for patient care.
(4) Optical equipment: Threaded shaft collars are used in optical equipment to position and align lenses and other optical components. They provide a precise and repeatable way to adjust the position of these components, which is essential for accurate and precise measurements.
