THK BNFN5512-7.5 ball screw belongs to the double nut preloaded ball screw, adopting the inner circulation or outer circulation structure (specific needs to be combined with the product manual). The core feature of THK BNFN5512-7.5 ball screw is that the transmission gap is eliminated through the double nut design and preload adjustment, which is suitable for high-precision positioning needs
BNFN 5510-2.5 BNFN 5510-5 BNFN 5510-7.5 BNFN 5512-2.5 BNFN 5512-3 BNFN 5512-3.5 BNFN 5512-5 BNFN 5512-7.5 BNFN 5516-2.5 BNFN 5516-5 BNFN 5520-2.5 BNFN 5520-5 BNFN 6310-2.5 BNFN 6310-5 BNFN 6310-7.5 BNFN 6312A-2.5 BNFN 6312A-5 BNFN 6316-2.5 BNFN 6316-5 BNFN 6320-2.5 BNFN 6320-5 BNFN 7010-2.5 BNFN 7010-5 BNFN 7010-7.5 BNFN 7012-2.5 BNFN 7012-5 BNFN 7012-7.5 BNFN 7020-5 BNFN 8010-2.5 BNFN 8010-5 BNFN 8010-7.5 BNFN 8012-5 BNFN 8020A-2.5 BNFN 8020A-5 BNFN 10020A-2.5 BNFN 10020A-5 BNFN 10020A-7.5
| Model No. | Screw shaft outer diameterd |
Lead
Ph |
Ball center- to-center diameter dp |
Thread minor diameterdc |
No.of loaded circuitsRows X turns |
Basic load rating | Rigidity
K N/μm |
|
| Ca
kN |
Coa
kN |
|||||||
| BNFN 5510-2.5 | 55 | 10 | 56.75 | 49.5 | 1×2.5 | 33.4 | 97 | 970 |
| BNFN 5510-5 | 55 | 10 | 56.75 | 49.5 | 2×2.5 | 60.7 | 194 | 1890 |
| BNFN 5510-7.5 | 55 | 10 | 56.75 | 49.5 | 3×2.5 | 85.9 | 291.1 | 2770 |
| BNFN 5512-2.5 | 55 | 12 | 57 | 49.2 | 1×2.5 | 39.3 | 108.8 | 990 |
| BNFN 5512-3 | 55 | 12 | 57 | 49.2 | 2×1.5 | 46 | 131.3 | 1180 |
| BNFN 5512-3.5 | 55 | 12 | 57 | 49.2 | 1×3.5 | 52.4 | 152.9 | 1360 |
| BNFN 5512-5 | 55 | 12 | 57 | 49.2 | 2X2.5 | 71.3 | 218.5 | 1920 |
| BNFN 5512-7.5 | 55 | 12 | 57 | 49.2 | 3×2.5 | 100.9 | 327.3 | 2830 |
| BNFN 5516-2.5 | 55 | 16 | 57.7 | 47.9 | 1×2.5 | 76.1 | 201.9 | 1310 |
| BNFN 5516-5 | 55 | 16 | 57.7 | 47.9 | 2×2.5 | 138.2 | 402.8 | 2550 |
| BNFN 5520-2.5 | 55 | 20 | 57.7 | 47.9 | 1X2.5 | 76 | 201.9 | 1320 |
| BNFN 5520-5 | 55 | 20 | 57.7 | 47.9 | 2×2.5 | 138.2 | 403.8 | 2550 |
| BNFN 6310-2.5 | 63 | 10 | 64.75 | 57.7 | 1×2.5 | 35.4 | 111.7 | 1090 |
| BNFN 6310-5 | 63 | 10 | 64.75 | 57.7 | 2×2.5 | 64.2 | 222.5 | 2100 |
| BNFN 6310-7.5 | 63 | 10 | 64.75 | 57.7 | 3×2.5 | 90.9 | 334.2 | 3090 |
| BNFN 6312A-2.5 | 63 | 12 | 65.25 | 56.3 | 1×2.5 | 48.1 | 139.2 | 1120 |
| BNFN 6312A-5 | 63 | 12 | 65.25 | 56.3 | 2X2.5 | 87.4 | 278.3 | 2160 |
| BNFN 6316-2.5 | 63 | 16 | 65.7 | 55.9 | 1×2.5 | 81.1 | 231.3 | 1470 |
| BNFN 6316-5 | 63 | 16 | 65.7 | 55.9 | 2X2.5 | 147 | 462.6 | 2840 |
| BNFN 6320-2.5 | 63 | 20 | 65.7 | 55.9 | 1×2.5 | 81 | 231.3 | 1470 |
| BNFN 6320-5 | 63 | 20 | 65.7 | 55.9 | 2X2.5 | 147 | 463.5 | 2640 |
| Nut dimensions | Screw shaft inertial moment/mm kg-m²/mm |
Nut masskg |
Shaft masskg/m |
|||||||
| Outer diameter D |
Flange diameter D₁ |
Overall length L |
H | B₁ | PCD | d₁Xd₂Xh | Lubrication hole A |
|||
| 102 | 144 | 141 | 18 | 123 | 122 | 11×17.5×11 | Rc1/8 (PT1/8) |
7.05X10 | 6.54 | 16.43 |
| 102 | 144 | 201 | 18 | 183 | 122 | 11×17.5×11 | 7.05×108 | 8.88 | 16.43 | |
| 102 | 144 | 261 | 18 | 243 | 122 | 11×17.5×11 | 7.05X10 | 11.23 | 16.43 | |
| 105 | 147 | 165 | 18 | 147 | 125 | 11×17.5×11 | 7.05×10° | 8.07 | 16.29 | |
| 105 | 147 | 191 | 18 | 173 | 125 | 11×17.5×11 | 7.05X10 | 9.17 | 16.29 | |
| 105 | 147 | 189 | 18 | 171 | 125 | 11×17.5×11 | 7.05×108 | 9.09 | 16.29 | |
| 105 | 147 | 237 | 18 | 219 | 125 | 11×17.5×11 | 7.05×106 | 11.13 | 16.29 | |
| 105 | 147 | 309 | 18 | 291 | 125 | 11×17.5×11 | 7.05X10 | 14.19 | 16.29 | |
| 110 | 158 | 196 | 25 | 171 | 133 | 14×20×13 | 7.05×106 | 11.28 | 15.46 | |
| 110 | 158 | 292 | 25 | 267 | 133 | 14×20×13 | 7.05×108 | 15.94 | 15.46 | |
| 112 | 158 | 227 | 28 | 199 | 134 | 14×20×13 | 7.05×10 | 13.49 | 16.1 | |
| 112 | 158 | 347 | 28 | 319 | 134 | 14×20×13 | 7.05X10 | 19.61 | 16.1 | |
| 108 | 154 | 137 | 22 | 115 | 130 | 14×20×13 | 1.21X10 | 6.98 | 21.93 | |
| 108 | 154 | 197 | 22 | 175 | 130 | 14×20×13 | 1.21×10⁵ | 9.4 | 21.93 | |
| 108 | 154 | 257 | 22 | 235 | 130 | 14×20×13 | 1.21X10 | 11.81 | 21.93 | |
| 115 | 161 | 159 | 22 | 137 | 137 | 14×20×13 | 1.21X10 | 9.32 | 21.14 | |
| 115 | 161 | 231 | 22 | 209 | 137 | 14×20×13 | 1.21X10 | 12.84 | 21.14 | |
| 122 | 184 | 208 | 24 | 184 | 152 | 18×26×17.5 | 1.21×105 | 14.61 | 20.85 | |
| 122 | 184 | 304 | 24 | 280 | 152 | 18X26X17.5 | 1.21X10 | 20.19 | 20.85 | |
| 122 | 180 | 227 | 28 | 199 | 150 | 18×26×17.5 | 1.21×105 | 15.91 | 20.85 | |
| 122 | 180 | 347 | 28 | 319 | 150 | 18X26X17.5 | 1.21X105 | 22.88 | 20.85 | |
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