Stringer bead knot wheel brushes are tightly twisted for low flex, high impact brushing action. Designed for root and hot pass weld cleaning in pipe joining applications. Also for general use where a narrow face, aggressive brush is desired for controlled, confined surface contact area.
| EDP | Diameter (Inches) | Arbor Hole / Thread Size | Wire Size | No. of Knots | Trim Length | Face Width | Max. RPM |
| 82186 | 4 | 5/8-11 Thread | 0.02 | 32 | 3/4 | 3/16 | 20,000 |
| 82194 | 4-1/2 | 5/8-11 Thread | 0.02 | 32 | 1 | 3/16 | 20,000 |
| 82187 | 4 | 1/2-13 Thread | 0.02 | 32 | 3/4 | 3/16 | 20,000 |
| 82188 | 4 | 3/8-24 Thread | 0.02 | 32 | 3/4 | 3/16 | 20,000 |
| 82190 | 4 | M10x1.25 Thread | 0 | 32 | 3/4 | 3/16 | 20,000 |
| 82193 | 4 | 1/2 A.H. | 0.02 | 32 | 3/4 | 3/16 | 20,000 |
| 82479 | 4-7/8 | 5/8-11 Thread | 0.02 | 38 | 3/4 | 3/16 | 15,000 |
| 82483 | 4-7/8 | 5/8-11 Thread | 0.02 | 48 | 3/4 | 3/16 | 15,000 |
| 82486 | 6 | 5/8-11 Thread | 0.02 | 40 | 1-1/8 | 3/16 | 12,500 |
| 82487 | 6 | 5/8-11 Thread | 0.02 | 48 | 1-1/8 | 3/16 | 12,500 |
| 82488 | 6 | 5/8-11 Thread | 0.02 | 56 | 1-1/8 | 3/16 | 12,500 |
| 82489 | 6 | 5/8-11 Thread | 0.02 | 64 | 1-1/8 | 1/8 | 12,500 |
| 82494 | 6-7/8 | 5/8-11 Thread | 0.02 | 56 | 1-1/8 | 3/16 | 9,000 |
| 82495 | 6-7/8 | 5/8-11 Thread | 0.02 | 72 | 1-1/8 | 3/16 | 9,000 |
Established near Cologne, Germany in 1799, the PFERD brand name is synonymous with outstanding premium-quality tools and abrasives. Today, they manufacture more than 7,500 PFERD brand grinding, cutting and surface finishing tools. And a complete range of power and maintenance brushes.
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