Flap discs
in category: Flap discs
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Flap discs for grinding steel and stainless steel, 125 mm
This category contains 125 mm flap discs for angle grinders, used on steel and stainless steel. They suit welders, metalworkers and installation crews who grind welds, chamfer edges and deburr. The range covers zirconia and corundum discs in grits 40 to 120, in T27 and T29 designs.
What you will find in this category
- T29 angled, bent or curved zirconia discs, 125 mm, grit 40-120, for stainless steel (INOX) and carbon steel.
- T29 corundum or aluminium oxide discs for steel, 125 mm, grit 40-120, on a fibreglass backing.
- Starflex PRO conical T27 discs for fillet welds, with zirconia grain on VSM cloth in grit 40 and 60.
- Star Flex flat T27 disc, zirconia grain 40, for stainless steel (INOX) and structural steel.
- PFERD POLIFAN conical disc, A40 corundum, for steel and stainless steel.
How to choose
- Grit: the range runs from grit 40 to 120. Grit 120 is listed for grinding, chamfering and deburring steel.
- Disc type: T27 discs are flat or conical, and the conical Starflex PRO discs are made for fillet welds. T29 discs are angled, bent or curved, for work on edges and welds.
- Abrasive grain: zirconia is self-sharpening and is offered for stainless steel and carbon steel. Corundum or aluminium oxide discs are listed for steel.
- Material: check the product description for mild steel, structural steel, stainless steel (INOX) or other metals.
- Grinder fit: bore is 22 to 22.23 mm and maximum speed is 12,200 rpm on all discs. Some list a working speed of 80 m/s.
Typical applications
These discs are used to grind welds, chamfer and bevel edges, deburr and remove rust. Conical T27 discs reach internal corners when finishing fillet welds without undercutting the workpiece. Bent T29 discs are used at an angle, and one product states an optimal working angle of 10°-25°.
Frequently asked questions
What is the difference between T27 and T29 flap discs?
In this range, T27 discs are flat or conical, and the Starflex PRO versions are made for fillet welds. T29 discs are angled, bent or curved, for edges, corners and welds.
Which grinder fits these discs?
All discs are 125 mm in diameter with a bore of 22 to 22.23 mm. Maximum speed is 12,200 rpm, so the grinder must not exceed this.
Which discs are suitable for stainless steel?
The zirconia discs are listed for stainless steel (INOX) and carbon steel. The PFERD POLIFAN disc is listed for steel and stainless steel.
Not sure which grit or disc type you need? Ask our technical support to help you choose.