The THK BNF2806V-2.5 ball screw is a transmission element designed for high-precision and high-load applications. Its unique structure and performance make it widely applicable in industrial automation, precision machinery and other fields.
Type
THK BNF2806V-2.5 ball screw belongs to the single nut phase difference preload type ball screw. The core feature of the THK BNF2806V-2.5 ball screw is that the preload is achieved by the phase difference of the left and right threads inside a single nut, without the need for a double nut structure, thereby reducing the volume and maintaining high precision. The THK BNF2806V-2.5 ball screw design is suitable for scenarios where space is limited but high rigidity is required.
Product model
BNF 1604V-5 BNF 1605V-2.5 BNF 1605V-5 BNF 2004V-2.5 BNF 2004V-5 BNF 2005V-2.5 BNF 2005V-5 BNF 2010V-2.5 BNF 2504V-2 BNF 2504V-5 BNF 2505V-2.5 BNF 2505V-5 BNF 2506V-2.5 BNF 2506V-5 BNF 2805V-2.5 BNF 2805V-5 BNF 2805V-7.5 BNF 2806V-2.5 BNF 2806V-5 BNF 2806V-7.5 BNF 3205V-2.5 BNF 3205V-5 BNF 3205V-7.5 BNF 3206V-2.5 BNF 3206V-5 BNF 2508V-2.5 BNF 2508V-3.5 BNF 2508V-5 BNF 2510V-2.5 BNF 2810V-2.5 BNF 3210V-2.5 BNF 3210V-3.5 BNF 3210V-5
BNF 3212V-3.5 BNF 3216V-5 BNF 3610V-2.5 BNF 3610V-5 BNF 3610V-7.5 BNF 3612V-2.5 BNF 3612V-5 BNF 3616V-2.5 BNF 3620V-1.5 BNF 4010V-2.5 BNF 4010V-3.5 BNF 4010V-5 BNF 4012V-2.5 BNF 4012V-3.5 BNF 4012V-5 BNF 4016V-5 BNF 4020V-5 BNF 4510V-2.5 BNF 4510V-3 BNF 4510V-5 BNF 4510V-7.5 BNF 4512V-5 BNF 4520V-2.5 BNE 5010V-2.5 BNF 5010V-3.5 BNF 5010V-5 BNF 5010V-7.5 BNF 5012V-2.5 BNF 5012V-3.5 BNF 5012V-5 BNF 5016V-2.5 BNF 5016V-5 BNF 5020V-2.5
| 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 1604V-5 | 16 | 4 | 16.5 | 13.8 | 2X2.5 | 7.8 | 17.4 | 290 |
| BNF 1605V-2.5 | 16 | 5 | 16.75 | 13.2 | 1×2.5 | 7.4 | 13.9 | 170 |
| BNF 1605V-5 | 16 | 5 | 16.75 | 13.2 | 2×2.5 | 13.5 | 27.9 | 320 |
| BNF 2004V-2.5 | 20 | 4 | 20.5 | 17.8 | 1X2.5 | 4.8 | 10.9 | 180 |
| BNF 2004V-5 | 20 | 4 | 20.5 | 17.8 | 2×2.5 | 8.6 | 21.8 | 350 |
| BNF 2005V-2.5 | 20 | 5 | 20.75 | 17.2 | 1×2.5 | 8.3 | 17.5 | 200 |
| BNF 2005V-5 | 20 | 5 | 20.75 | 17.2 | 2×2.5 | 15.1 | 35 | 380 |
| BNF 2010V-2.5 | 20 | 10 | 20.75 | 17.2 | 1×2.5 | 8.3 | 17.6 | 197 |
| BNF 2504V-2.5 | 25 | 4 | 25.5 | 22.8 | 1×2.5 | 5.2 | 13.7 | 210 |
| BNF 2504V-5 | 25 | 4 | 25.5 | 22.8 | 2×2.5 | 9.5 | 27.4 | 410 |
| BNF 2505V-2.5 | 25 | 5 | 25.75 | 22.2 | 1×2.5 | 9.2 | 21.9 | 240 |
| BNF 2505V-5 | 25 | 5 | 25.75 | 22.2 | 2×2.5 | 16.7 | 43.9 | 460 |
| BNF 2506V-2.5 | 25 | 6 | 26 | 21.4 | 1×2.5 | 12.4 | 27.4 | 250 |
| BNF 2506V-5 | 25 | 6 | 26 | 21.4 | 2×2.5 | 22.6 | 54.8 | 470 |
| BNF 2805V-2.5 | 28 | 5 | 28.75 | 25.2 | 1×2.5 | 9.7 | 24.6 | 250 |
| BNF 2805V-5 | 28 | 5 | 28.75 | 25.2 | 2×2.5 | 17.5 | 49.2 | 500 |
| BNF 2805V-7.5 | 28 | 5 | 28.75 | 25.2 | 3×2.5 | 24.8 | 73.8 | 740 |
| BNF 2806V-2.5 | 28 | 6 | 28.75 | 25.2 | 1X2.5 | 9.6 | 24.6 | 250 |
| BNF 2806V-5 | 28 | 6 | 28.75 | 25.2 | 2×2.5 | 17.5 | 49.2 | 500 |
| BNF 2806V-7.5 | 28 | 6 | 28.75 | 25.2 | 3×2.5 | 24.8 | 73.8 | 740 |
| BNF 3205V-2.5 | 32 | 5 | 32.75 | 29.2 | 1×2.5 | 10.2 | 28.1 | 280 |
| BNF 3205V-5 | 32 | 5 | 32.75 | 29.2 | 2×2.5 | 18.5 | 56.3 | 560 |
| BNF 3205V-7.5 | 32 | 5 | 32.75 | 29.2 | 3×2.5 | 26.2 | 84.4 | 810 |
| BNF 3206V-2.5 | 32 | 6 | 33 | 28.4 | 1×2.5 | 13.9 | 35.2 | 290 |
| BNF 3206V-5 | 32 | 6 | 33 | 28.4 | 2X2.5 | 25.2 | 70.3 | 580 |
| Nut dimensions | Screw shaft inertial moment/mm kg·m²/mm |
Nut mass kg |
Shaft mass kg/m |
Maximum permissible rotation speed min- |
|||||||
| Outer diameter D |
Flange diameter D₁ |
Overal length L |
H | B₁ | PCD | d₁ ×d₂Xh | Lubrication hole A |
||||
| 36 | 59 | 53 | 11 | 42 | 47 | 5.5×9.5×5.5 | M6 | 5.05×10- | 0.42 | 1.42 | 5000 |
| 40 | 60 | 41 | 10 | 31 | 50 | 4.5×8×4.5 | M6 | 5.05X10- | 0.37 | 1.37 | 5000 |
| 40 | 60 | 56 | 10 | 46 | 50 | 4.5×8×4.5 | M6 | 5.05×10 | 0.49 | 1.37 | 5000 |
| 40 | 63 | 37 | 11 | 26 | 51 | 5.5×9.5×5.5 | M6 | 1.23×10- | 0.3 | 2.22 | 4870 |
| 40 | 63 | 49 | 11 | 38 | 51 | 5.5×9.5×5.5 | M6 | 1.23×10-7 | 0.49 | 2.22 | 4870 |
| 44 | 67 | 41 | 11 | 30 | 55 | 5.5×9.5×5.5 | M6 | 1.23×10-7 | 0.46 | 2.19 | 4810 |
| 44 | 67 | 56 | 11 | 45 | 55 | 5.5×9.5×5.5 | M6 | 1.23X10- | 0.6 | 2.19 | 4810 |
| 46 | 74 | 58 | 15 | 43 | 59 | 5.5×9.5×5.5 | M6 | 1.23×10-7 | 0.68 | 2.46 | 4810 |
| 46 | 69 | 36 | 11 | 25 | 57 | 5.5×9.5×5.5 | M6 | 3.01×10-7 | 0.21 | 3.6 | 3920 |
| 46 | 69 | 48 | 11 | 37 | 57 | 5.5×9.5×5.5 | M6 | 3.01×10-7 | 0.55 | 3.6 | 3920 |
| 50 | 73 | 40 | 11 | 29 | 61 | 5.5X9.5X5.5 | M6 | 3.01X10 | 0.52 | 3.52 | 3880 |
| 50 | 73 | 55 | 11 | 44 | 61 | 5.5×9.5×5.5 | M6 | 3.01X10- | 0.68 | 3.52 | 3880 |
| 53 | 76 | 44 | 11 | 33 | 64 | 5.5X9.5X5.5 | M6 | 3.01×10-7 | 0.61 | 3.43 | 3840 |
| 53 | 76 | 62 | 11 | 51 | 64 | 5.5×9.5×5.5 | M6 | 3.01×10-7 | 0.91 | 3.43 | 3840 |
| 55 | 85 | 44 | 12 | 32 | 69 | 6.6×11×6.5 | M6 | 4.74×107 | 1.02 | 4.45 | 3470 |
| 55 | 85 | 59 | 12 | 47 | 69 | 6.6×11×6.5 | M6 | 4.74×10-7 | 1.06 | 4.45 | 3470 |
| 55 | 85 | 74 | 12 | 62 | 69 | 6.6×11×6.5 | M6 | 4.74×107 | 1.16 | 4.45 | 3470 |
| 55 | 85 | 50 | 12 | 38 | 69 | 6.6×11×6.5 | M6 | 4.74X10- | 0.87 | 4.52 | 3470 |
| 55 | 85 | 68 | 12 | 56 | 69 | 6.6×11×6.5 | M6 | 4.74X10-7 | 1.09 | 4.52 | 3470 |
| 55 | 85 | 86 | 12 | 74 | 69 | 6.6×11×6.5 | M6 | 4.74×10-7 | 1.3 | 4.52 | 3470 |
| 58 | 85 | 41 | 12 | 29 | 71 | 6.6X11X6.5 | M6 | 8.08X10- | 0.76 | 5.89 | 3050 |
| 58 | 85 | 56 | 12 | 44 | 71 | 6.6×11×6.5 | M6 | 8.08×10-7 | 0.94 | 5.89 | 3050 |
| 58 | 85 | 71 | 12 | 59 | 71 | 6.6X11X6.5 | M6 | 8.08X10 | 1.13 | 5.89 | 3050 |
| 62 | 89 | 45 | 12 | 33 | 75 | 6.6×11×6.5 | M6 | 8.08×10-7 | 0.94 | 5.88 | 3030 |
| 62 | 89 | 63 | 12 | 51 | 75 | 6.6×11×6.5 | M6 | 8.08X10- | 1.21 | 5.88 | 3030 |
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