Application areas of THK BNF6312A-5 ball screw
Machine tool industry: In the feed system of machine tools, ball screws play a key role. THK BNF6312A-5 ball screw can provide precise linear motion to ensure the accuracy and stability of machine tools during processing. Traditional analytical methods are difficult to complete accurate and complete calculation analysis, while the use of advanced finite element analysis software such as ANSYS can perform modal analysis on ball screws to study their undamped free vibration, thereby obtaining natural frequencies and vibration models.
| Model No. | Screw shaft outer diameterd |
Lead
Ph |
Ball center- to-center diameterdp |
Thread minor diameterdc |
No.of loaded circuitsRows X turns |
Basic load rating | Rigidity
K N/μm |
|
| Ca
kN |
Coa
kN |
|||||||
| BNF 5510-2.5 | 55 | 10 | 56.75 | 49.5 | 1X2.5 | 33.4 | 97 | 490 |
| BNF 5510-5 | 55 | 10 | 56.75 | 49.5 | 2×2.5 | 60.7 | 194 | 950 |
| BNF 5510-7.5 | 55 | 10 | 56.75 | 49.5 | 3×2.5 | 85.9 | 291.1 | 1390 |
| BNF 5512-2.5 | 55 | 57 | 49.2 | 1×2.5 | 39.3 | 108.8 | 500 | |
| BNF 5512-3 | 55 | 12 | 57 | 49.2 | 2X1.5 | 46 | 131.3 | 590 |
| BNF 5512-3.5 | 55 | 12 | 57 | 49.2 | 1×3.5 | 52.4 | 152.9 | 680 |
| BNF 5512-5 | 55 | 12 | 57 | 49.2 | 2×2.5 | 71.3 | 218.5 | 960 |
| BNF 5512-7.5 | 55 | 12 | 57 | 49.2 | 3×2.5 | 100.9 | 327.3 | 1420 |
| BNF 5516-2.5 | 55 | 16 | 57.7 | 47.9 | 1X2.5 | 76.1 | 201.9 | 650 |
| BNF 5516-5 | 55 | 16 | 57.7 | 47.9 | 2×2.5 | 138.2 | 402.8 | 1280 |
| BNF 5520-2.5 | 55 | 20 | 57.7 | 47.9 | 1×2.5 | 76 | 201.9 | 660 |
| BNF 5520-5 | 55 | 20 | 57.7 | 47.9 | 2×2.5 | 138.2 | 403.8 | 1280 |
| BNF 6310-2.5 | 63 | 10 | 64.75 | 57.7 | 1×2.5 | 35.4 | 111.7 | 550 |
| BNF 6310-5 | 63 | 10 | 64.75 | 57.7 | 2×2.5 | 64.2 | 222.5 | 1050 |
| BNF 6310-7.5 | 63 | 10 | 64.75 | 57.7 | 3×2.5 | 90.9 | 334.2 | 1550 |
| BNF 6312A-2.5 | 63 | 12 | 65.25 | 56.3 | 1×2.5 | 48.1 | 139.2 | 560 |
| BNF 6312A-5 | 63 | 12 | 65.25 | 56.3 | 2×2.5 | 87.4 | 278.3 | 1090 |
| BNF 6316-5 | 63 | 16 | 65.7 | 55.9 | 2×2.5 | 147 | 462.6 | 1420 |
| BNF 6320-2.5 | 63 | 20 | 65.7 | 55.9 | 1×2.5 | 81 | 231.3 | 740 |
| BNF 6320-5 | 63 | 20 | 65.7 | 55.9 | 2X2.5 | 147 | 463.5 | 1420 |
| 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 | d₁Xd₂ ×h | Lubrication hole A |
|||
| 102 | 144 | 81 | 18 | 63 | 122 | 11×17.5×11 | Rc1/8 (PT1/8) |
7.05X10 | 4.19 | 16.43 |
| 102 | 144 | 111 | 18 | 93 | 122 | 11×17.5×11 | 7.05X10 | 5.36 | 16.43 | |
| 102 | 144 | 141 | 18 | 123 | 122 | 11×17.5×11 | 7.05×106 | 6.54 | 16.43 | |
| 105 | 147 | 93 | 18 | 75 | 125 | 11×17.5×11 | 7.05X10 | 5.01 | 16.29 | |
| 105 | 147 | 107 | 18 | 89 | 125 | 11×17.5×11 | 7.05X10 | 5.6 | 16.29 | |
| 105 | 147 | 105 | 18 | 87 | 125 | 11×17.5×11 | 7.05×10⁶ | 5.52 | 16.29 | |
| 105 | 147 | 129 | 18 | 111 | 125 | 11×17.5×11 | 7.05X10 | 6.54 | 16.29 | |
| 105 | 147 | 165 | 18 | 147 | 125 | 11×17.5×11 | 7.05×10° | 8.07 | 16.29 | |
| 110 | 158 | 116 | 25 | 91 | 133 | 14X20×13 | 7.05×10 | 7.4 | 15.46 | |
| 110 | 158 | 164 | 25 | 139 | 133 | 14×20×13 | 7.05X10 | 9.73 | 15.46 | |
| 112 | 158 | 127 | 28 | 99 | 134 | 14×20X13 | 7.05×106 | 8.4 | 16.1 | |
| 112 | 158 | 187 | 28 | 159 | 134 | 14×20×13 | 7.05X10 | 11.45 | 16.1 | |
| 108 | 154 | 77 | 22 | 55 | 130 | 14×20X13 | 1.21X105 | 4.57 | 21.93 | |
| 108 | 154 | 107 | 22 | 85 | 130 | 14×20×13 | 1.21×105 | 5.77 | 21.93 | |
| 108 | 154 | 137 | 22 | 115 | 130 | 14×20×13 | 1.21X10 | 6.98 | 21.93 | |
| 115 | 161 | 87 | 22 | 65 | 137 | 14×20×13 | 1.21×105 | 5.8 | 21.14 | |
| 115 | 161 | 123 | 22 | 101 | 137 | 14×20X13 | 1.21X105 | 7.56 | 21.14 | |
| 122 | 184 | 160 | 24 | 136 | 152 | 18×26×17.5 | 1.21×10⁵ | 11.82 | 20.85 | |
| 122 | 180 | 127 | 28 | 99 | 150 | 18×26×17.5 | 1.21X10 | 10.1 | 21.57 | |
| 122 | 180 | 187 | 28 | 159 | 150 | 18×26×17.5 | 1.21X10 | 13.58 | 21.57 | |
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