Center Flange Nut
Greater Rigidity and Precision
Central Force Transmission
Kammerer’s center-flange nut is a ball screw nut with a flange located in the center of the nut body. This ensures that the force is transmitted symmetrically to the nut, keeping bending and tilting moments low. This increases the overall stiffness of the ball screw drive and improves positioning accuracy.
| Nenn-Ø | Steigung | Spindel-Ø h6 | Kugel-Ø Dw | Anzahl Umläufe i | cdyn. [kN] | cstat. [kN] | Zentr-Ø D1g6 | Flansch-Ø D6 | Teilkr-Ø D4 | Gesamtlänge L2 | Flanschbreite L7 | Kern-Ø | Anz. Montagebohrungen | Bohr-Ø D5 | Flanschbreite L7 | Winkel W | Gew.tiefe L10 | Ansatzlänge L12 | Schmieranschluss D7 | Statische axiale Steifigkeit bei Vorspannung 5% von Cdyn [N/µm] |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 16 | 10 | 16 | 2.38 | 3 | 7.97 | 12.19 | 33 | 58 | 45 | 45 | 15 | 14 | 6x60° | 6.6 | 15 | 40 | 8 | 15 | M6 | 208.15 |
| 16 | 16 | 16 | 2.38 | 2 | 5.32 | 7.64 | 33 | 58 | 45 | 55 | 15 | 14 | 6x60° | 6.6 | 15 | 40 | 8 | 20 | M6 | 134.23 |
| 20 | 10 | 20 | 3.175 | 4 | 17 | 27.65 | 38 | 63 | 50 | 64 | 20 | 17.2 | 6x60° | 6.6 | 20 | 30 | 8 | 22 | M6 | 344.57 |
| 20 | 20 | 20 | 3.175 | 2 | 8.66 | 12.82 | 38 | 63 | 50 | 64 | 20 | 17.2 | 6x60° | 6.6 | 20 | 30 | 8 | 22 | M6 | 167.37 |
| 25 | 20 | 24 | 4.5 | 3 | 22.35 | 34.51 | 48 | 73 | 60 | 90 | 25 | 20.4 | 6x60° | 6.6 | 25 | 42 | 8 | 32.5 | M6 | 318.47 |
| 25 | 25 | 24 | 4.5 | 2 | 15.02 | 21.91 | 48 | 73 | 60 | 80 | 25 | 20.4 | 6x60° | 6.6 | 25 | 42 | 8 | 27.5 | M6 | 199.51 |
| 32 | 20 | 30 | 6.35 | 3 | 39.36 | 60.28 | 56 | 80 | 68 | 88 | 20 | 25 | 6x60° | 6.6 | 20 | 30 | 8 | 34 | M6 | 398.1 |
| 32 | 32 | 30 | 6.35 | 2 | 26.24 | 37.61 | 56 | 80 | 68 | 92 | 20 | 25 | 6x60° | 6.6 | 20 | 30 | 8 | 36 | M6 | 244.02 |
| 40 | 20 | 38 | 6.35 | 3 | 44.53 | 77.89 | 63 | 95 | 78 | 88 | 25 | 33 | 6x60° | 9 | 25 | 30 | 10 | 31.5 | M8x1 | 471.92 |
| 40 | 40 | 38 | 6.35 | 2 | 29.55 | 48.17 | 72 | 110 | 90 | 113 | 40 | 33 | 6x60° | 11 | 40 | 41 | 10 | 36.5 | M8x1 | 304.27 |
| 50 | 20 | 48 | 9.52 | 3 | 94.76 | 165.09 | 85 | 125 | 105 | 92 | 30 | 40.3 | 6x60° | 11 | 30 | 30 | 10 | 31 | M8x1 | 646.08 |
| 50 | 40 | 48 | 9.52 | 2 | 63.42 | 102.63 | 85 | 125 | 105 | 113 | 30 | 40.3 | 6x60° | 11 | 30 | 30 | 10 | 41.5 | M8x1 | 427.9 |
| 63 | 40 | 60 | 9.52 | 2 | 71.26 | 131.61 | 95 | 140 | 118 | 120 | 30 | 52.3 | 6x60° | 14 | 30 | 20 | 10 | 45 | M8x1 | 509.61 |
| 63 | 50 | 60 | 9.52 | 2 | 70.75 | 130.14 | 95 | 140 | 118 | 140 | 30 | 52.3 | 6x60° | 14 | 30 | 20 | 10 | 55 | M8x1 | 503.4 |
| 80 | 40 | 80 | 12.7 | 2 | 120.2 | 236.26 | 125 | 180 | 152 | 133 | 30 | 69.5 | 6x60° | 18 | 30 | 30 | 10 | 51.5 | M8x1 | 667.9 |
| 80 | 60 | 80 | 12.7 | 2 | 119.11 | 232.89 | 125 | 180 | 152 | 165 | 30 | 69.5 | 6x60° | 18 | 30 | 30 | 10 | 67.5 | M8x1 | 662.85 |
Features
- Central flange for symmetrical, direct power transmission
- High rigidity; values listed in the table by size
- Nominal diameters from 16 to 80 mm
- Large lead lengths from 10 to 60 mm for high travel speeds
- Lubrication port located directly on the flange
Why a center flange?
In a single-flange nut, the flange is located at the end, and the force is applied from one side. In a center-flange nut, the force is distributed evenly across both halves of the nut. This is particularly advantageous for steep pitches and high dynamic loads, when high acceleration forces are at work.
Applications
Center-flange nuts are suitable for fast, precise axes in machine tools, automation, printing and packaging technology, and material-handling systems.
Dimensions, Load Capacities, and Stiffness
The table shows all 16 standard sizes, including load ratings, mounting dimensions, and static axial stiffness. Additional dimensions are available upon request.
