As to whether spray type (Bell Hammer Gold) or grease is better for lubricating axle shafts, each has its own characteristics.
The spray type (Bell Hammer Gold) has the following features
High permeability and easy to spread evenly even in small gaps.
Reduces friction and supports smooth movement.
Easy to perform periodic maintenance.
Especially in fine moving parts such as chain links and in places where high permeability is required,
Bell Hammer Gold is particularly effective on fine moving parts such as chain links and in places where penetration is required.
Because it is a spray type, it can penetrate into crevices and enhance lubrication performance.
However, its durability is shorter than that of grease in places where liquid tends to drip.
Characteristics of greases (metal greases, etc.)
High durability and long-lasting lubricating effect.
High water resistance and stable oil film even in an environment where water cannot penetrate.
High viscosity makes it suitable for parts subject to wear and load.
・High viscosity, suitable for parts subject to abrasion and load.
Especially in parts subject to rotation and load, such as axle shafts, grease is more likely to have a longer-lasting oil film and more stable lubrication, so metal grease is recommended for long-term lubrication effects.
However, its penetration is lower than that of sprays.
In conclusion...
Bell Hammer Gold (spray type) is recommended when it is necessary to penetrate into fine gaps, such as chain links, while metal grease is recommended for areas prone to dripping or when long-term lubrication and durability are required.
Both have suitable applications, and it is ideal to use them for different purposes.