Double-sided milling rings (Weld Root Opener) are available in diameters of 70, 116 and 125 mm and are used for opening butt- and fillet welds. Suitable materials are all non-ferrous metals, carbon/fiberglass, plastics and wood.
Each material requires a unique tooth profile. You may use an aluminum milling ring for other materials as well, but with limited performance.
Our standard product range is designed for aluminum and if you need milling rings for other materials please contact us.
Base support
The base support Universal has a bore diameter of 22.23 mm (7/8") and fits to all electrical and pneumatical grinders with or without mounting flange depending on the type. It is supplied with a countersunk screw to fit on pneumatic turbo-grinders.
With a base support M 14 the milling rings may be mounted to many angle grinder with a M 14 thread not requiring an additional mounting flange.
Reference table weld root openers
| Item number | Designation | Weight |
|---|---|---|
| 25,001,0,070 | Double-sided milling disc (weld root opener) 70 mm - Z36/25°-Alu | 0,4 kg |
| 25,001,0,116 | Double-sided milling disc (weld root opener) 116 mm - Z55/30-Alu | 0,7 kg |
| 25,001,0,125 | Double-sided milling disc (weld root opener) 125 mm - Z59/30-Alu | 0,9 kg |
| 29,025,0,070 | Base support milling disc 70 mm/M 14 | 0,05 kg |
| 29,025,1,116 | Base support milling disc 116-125 mm/Universal | 0,1 kg |
| 29,025,0,116 | Base support milling disc 116-125 mm/M 14 | 0,1 kg |
| 29,000,0,002 | Retainer nut 116-125 mm | 0,05 kg |
| 29,000,0,004 | Retainer nut 70 mm, M14 | 0,02 kg |
| 29,000,0,003 | Countersunk bolt M8x35 verzinkt GTG | 0,01 kg |
| 29,000,0,001 | Reusable transport box | 0,05 kg |
Milling ring sets
Our sets contain a double sided milling ring with the relevant diameter, the base support (M 14 or Universal), the retainer nut and the reusable transport box.
Sets of weld root openers
| Item number | Designation | Base support |
|---|---|---|
| 25,002,0,070 | Set double sided milling ring 70 mm - Z36/25°-Alu/M14 | M 14 |
| 25,002,0,116 | Set double sided milling ring 116 mm - Z55/30°-Alu/M14 | M 14 |
| 25,002,0,125 | Set double sided milling ring 125 mm - Z59/30°-Alu/M14 | M 14 |
| 25,003,0,116 | Set double sided milling ring 116 mm - Z55/30°-Alu/Universal | Universal (22,23 mm) |
| 25,003,0,125 | Set double sided milling ring 125 mm - Z59/30°-Alu/Universal | Universal (22,23 mm) |
Resharpening
Our weld root openers may be resharpened 5-7 times.
| Item number | Designation |
|---|---|
| 26,001,0,116 | Resharpening double-sided milling ring 116 mm Z55/Alu |
| 26,001,0,125 | Resharpening double-sided milling ring 125 mm Z59/Alu |
| 26,001,0,070 | Resharpening double-sided milling ring 70 mm Z36/Alu |