Why Do Some Brands of Sewing Machines, Like Newer Brother Ones, Not Need to Be Oiled?
Many newer Brother sewing machines and similar brands are designed with maintenance in mind which is why they may not require regular oiling like older models. This article delves into the advancements in lubrication and design that contribute to the extended maintenance intervals of modern sewing machines.
Sealed Lubrication Systems
One of the key features of modern sewing machines is the sealed lubrication system. This system pre-lubricates the internal components with a special grease or oil that is intended to last a long time. The inclusion of this sealed lubrication reduces the need for regular oiling by the user, making the machine more convenient and user-friendly.
Synthetic Lubricants
Manufacturers often opt for synthetic lubricants that have a much longer lifespan and better stability than traditional oils. These synthetic lubricants can withstand higher temperatures and resist breaking down over time, ensuring the machine operates smoothly without frequent reapplications. This further minimizes the need for maintenance and makes the machine more reliable for both professional and home use.
Reduced Friction Design
Advancements in engineering have led to designs that minimize friction between moving parts, thereby reducing wear and tear. For example, the use of better bearings and materials can significantly decrease the need for regular oiling. Sewing machines like the newer Brother models incorporate these improvements to ensure smooth operation for extended periods.
User-Friendly Maintenance
The ease of maintaining these modern sewing machines is another factor that makes them user-friendly. By eliminating the need for frequent oiling, manufacturers cater to beginners who may not be familiar with the intricacies of sewing machine maintenance. Despite the reduced need for oiling, it is essential to follow the manufacturer's guidelines for maintenance to ensure optimal performance. Some models may still require occasional cleaning and inspection.
Sealed Sintered Bronze Bearings
Modern sewing machines often feature sintered bronze bearings, a type of bearing made from fine particles of metal formed under high pressure and heat. These bearings are designed to retain oil internally even during prolonged use. When the machine runs, the surface of the bearing heats up, causing the oil to flow towards the heated surface. This self-lubricating system can extend the life of the machine for up to 25 to 30 years, or even longer, depending on the quality of the machine.
Since the introduction of self-oiling machines in the late 1960s, there have been significant improvements in lubricants. These advancements have enhanced the longevity and efficiency of such self-oiling machines, making them more reliable over time. In my experience as a sewing machine mechanic, I have seen several 50-year-old machines that are still in working condition. These machines, though older, often require only occasional external oiling to keep the mechanisms running smoothly.
Other Parts and Lubrication
It is not only the bearings that are lubricated in these machines; gears and other parts are also often pre-lubed with grease at the factory. Over time, this grease can become hardened and stiffen, leading to balky mechanisms. While solvents can provide a temporary fix, they can also harm the sintered bearings. The only permanent solution is to disassemble the machine, clean it thoroughly, and reassemble it with more modern lubricants that won't harden.
Modern sewing machines, like those from the Brother line, are designed to operate with minimal maintenance, thanks to advanced engineering and materials. These improvements not only make the machines more user-friendly but also extend their useful life, making them a worthwhile investment for both professional and home use.