Set collar POM：Durable and Precise for Various Applications

Up to 1”:	+.0005” to +.002”
1-1/16” to 3”:	+.0005” to +.003”
3-1/16” to 4”:	+.0010” to +.004”

set collar, often referred to as a set screw collar, is a widely used mechanical component designed to fix and position objects on a shaft. These collars are typically manufactured from materials like aluminum, stainless steel, or galvanized steel. Their primary feature is the set screw, which provides a firm grip and prevents movement during operation. In this article, we will focus on a specific type: the POM set collar.

What is POM?

POM plasitc POM also called plastic

POM (Polyoxymethylene), also called acetal or Delrin, is a high-performance engineering plastic. It offers rigidity, low friction, and excellent wear resistance, which makes it a popular choice for manufacturing precision components like bearings, gears, sliders, clamping sleeves, and fasteners. Its resistance to chemicals and moisture makes it perfect for applications that demand low friction and long-lasting durability.

Key Features of POM Set Collar

Lightweight
POM set collars are lighter than metal collars, which is a significant advantage in applications where weight matters. In automation or precision instruments, their reduced weight lowers energy consumption and reduces wear on moving parts.
Low Friction and High Wear Resistance
POM’s low friction reduces wear between the shaft and collar, ensuring smooth operation for longer periods. This is important in applications with frequent movement, minimizing the need for maintenance.
Corrosion and Moisture Resistance
POM doesn’t rust or corrode, making it an ideal choice for humid or chemically harsh environments. Unlike metal collars that degrade over time, POM collars hold up well in industries like food processing, medical equipment, and marine environments.
Dimensional Stability
POM set collars retain their shape and size, even when exposed to temperature changes. This stability ensures consistent performance in precision applications, preventing deformation even under repeated stress.
Easy to Machine and Customize
POM is easier to machine than metals like stainless steel or aluminum. Manufacturers can quickly customize POM set collars to specific requirements, offering flexibility for unique applications.

Applications of POM Set Collars

POM set collars are versatile and can be used across multiple industries:

Automation Systems
In automated machinery, POM set collars hold components securely on shafts, enabling precise and smooth movements. Their lightweight design also helps reduce energy consumption.
Medical Devices
In the medical field, POM set collars are used in devices and lab equipment to hold sensitive components in place. Their resistance to chemicals and precision positioning are key advantages.
Food Processing
POM’s resistance to corrosion makes it suitable for food processing equipment, where exposure to moisture and cleaning agents is common. These set collars maintain operational efficiency without risk of rust.
Marine Applications
POM set collars withstand exposure to saltwater and other corrosive conditions. They are commonly used in marine equipment like steering systems and pumps.
Electronics
POM set collars are ideal for securing moving parts such as motors and drives in consumer electronics, offering both durability and precision in positioning components.

Advantages of POM Set Collar

Cost-Effective: POM is generally more affordable than metals like stainless steel, offering good performance at a lower cost.
Non-Magnetic: POM doesn’t interfere with sensitive equipment where magnetic properties could be a concern.
Reduces Noise: Its ability to dampen vibrations makes it ideal for precision machinery, where noise reduction is important.

Limitations of POM Set Collar

Lower Strength: POM isn’t as strong as metal alternatives, so it may not be suitable for high-stress applications requiring heavy loads or high torque.
Temperature Limits: POM deforms at high temperatures, limiting its use in environments where heat exceeds its melting point (175°C).

Conclusion

POM set collars offer a reliable solution for industries needing lightweight, corrosion-resistant, and precise components. They’re ideal for automation, medical devices, food processing, and marine equipment. While not as strong as metal collars, their versatility and cost-effectiveness make them a smart choice for many applications. Understanding the balance between POM’s advantages and limitations helps ensure the right selection for optimal performance.