Fibre discs
Top tips for working safely and quickly with fibre discs.
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Adjust the pressure
High pressure can be the cause of heat production, burn marks and premature wear.
Avoid heat production
Maximum and recommended speed
The ideal peripheral speed depends on the material you are working with. We recommend always working at speeds below 60 m/s.
When using silicon carbide discs, it's best to adjust the speed based on the material you are working with.
The table below suggests recommended speeds for working on various materials. These speeds should be considered as guidelines – the right speed will depend on the exact task.
Choose the right speed
Diameter
| Cast iron – Steel
| Stainless steel
| Aluminium – Non-ferrous metals
Brass – Copper | Hard steel
Titanium | Glass – Stone
Ceramics | Synthetics
|
dia. 115
| 7,100 - 8,200
| 4,900 - 5,700
| 4,500 - 5,100
| 4,000 - 4,600
| 2,500 - 2,900
| 900 - 1,200
|
dia. 125
| 6,500 - 7,500
| 4,500 - 5,200
| 4,100 - 4,700
| 3,700 - 4,200
| 2,300 - 2,700
| 800 - 1,100
|
dia. 176
| 4,500 - 5,200
| 3,200 - 3,700
| 2,900 - 3,300
| 2,600 - 3,000
| 1,600 - 1,900
| 600 - 800
|
Choose the right back-up pad
Fibre discs must always be used together with a back-up pad.
Using the right back-up pad is important to getting the right finish on your workpiece.
Flexible back-up pad
FIZ
Gives you controlled stock removal and a finer finish.
Very well suited for use with fibre discs with a fine grain.
Hard back-up pad
FIW
Hard back-up pad
FIH
The composition of the disc makes it extremely heat resistant. The heat-damping ribs result in a cooler grinding process, which helps prevent heat-related deformation of the back-up pad.
Safety first
PPE (personal protective equipment) is your best friend when you’re working with abrasives . Always choose the right protective equipment and stay safe and healthy throughout your career.
(wear together)
Storing fibre discs
If the humidity is either too high or very low, the discs can deform. If that happens, they cannot be mounted properly on a back-up pad and may end up damaging the workpiece when you try to use them. If exposed to a high level of humidity over a longer period of time, the abrasive grain will loosen and detach more easily, drastically reducing the performance of the disc.
Poor conditions can also sometimes cause the disc to become brittle and disintegrate while in use – with a risk of bodily injury due to flying debris.
