The THK MBF1005-2.7 miniature ball screw can be equipped with an optional RR double-sided labyrinth seal. The labyrinth seal design effectively prevents dust, debris, and contaminants from entering the nut, while reducing lubricant leakage. This helps maintain smooth operation, improves reliability, and extends service life in harsh working environments.
Specifications
Screw outer diameter: 10 mm
Lead: 5 mm
Ball center diameter: 10.3mm
Dynamic load rating: 3 kN
Static load rating: 5.2 kN
Nut outer diameter: 24 mm
Flange outer diameter: 44 mm
Nut total length L: 34 mm
Nut weight: 0.12 kg
Screw weight: 0.56 kg/m
When the MBF1005-2.7 ball screw is used in environments without foreign objects but with suspended dust, a labyrinth seal ring marked RR can be used instead of a dustproof device.
Protective Function: The labyrinth seal is a non-contact dustproof seal, primarily used to prevent fine dust, foreign objects, and debris from entering the nut, while also effectively preventing internal grease loss.
Low Friction Advantage: Because of its non-contact design, it provides dust protection without adding extra rotational torque to the screw, making it ideal for miniature ball screw applications requiring high speed, light load, and smooth operation.
Applications of the THK MBF1005-2.7 ball screw:
Semiconductor manufacturing equipment
Precision positioning platforms
Laboratory automation
Optical inspection systems
Compact CNC equipment
Customized Solutions Available
We support custom design and production according to your drawings. Customized dimensions, lead, shaft end machining, nut types, and other specifications are available upon request.
| THK MBF Ball Screw Model | |
| MBF0401-3.7 | MBF0601-3.7 |
| MBF0602-2.7 | MBF0602.5-2.7 |
| MBF0801.5-3.7 | MBF0802-3.7 |
| MBF0802.5-3.7 | MBF0803-2.7 |
| MBF0804-2.7 | MBF1001-3.7 |
| MBF1001.5-3.7 | MBF1002-3.7 |
| MBF1002.5-3.7 | MBF1003-3.7 |
| MBF1005-2.7 | MBF1202-3.7 |
| MBF1202.5-3.7 | MBF1203-3.7 |
| MBF1204-3.7 | MBF1402-3.7 |
| MBF1404-3.7 | |
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 |
|||||||
| MBF 0401-3.7 | 4 | 1 | 4.15 | 3.3 | 1×3.7 | 0.59 | 0.93 | 54 |
| MBF 0601-3.7 | 6 | 1 | 6.15 | 5.3 | 1×3.7 | 0.74 | 1.5 | 75 |
| MBF 0602-2.7 | 6 | 2 | 6.2 | 5.1 | 1×2.7 | 0.75 | 1.2 | 58 |
| MBF 0602.5-2.7 | 6 | 2.5 | 6.2 | 5.1 | 1×2.7 | 0.75 | 1.2 | 59 |
| MBF 0801.5-3.7 | 8 | 1.5 | 8.2 | 7.1 | 1×3.7 | 1.1 | 2.2 | 99 |
| MBF 0802-3.7 | 8 | 2 | 8.3 | 6.6 | 1×3.7 | 2.5 | 4.2 | 111 |
| MBF 0802.5-3.7 | 8 | 2.5 | 8.3 | 6.6 | 1×3.7 | 2.4 | 4.1 | 111 |
| MBF 0803-2.7 | 8 | 3 | 8.3 | 6.2 | 1×2.7 | 2.6 | 4.2 | 85 |
| MBF 0804-2.7 | 8 | 4 | 8.3 | 6.2 | 1×2.7 | 2.6 | 4.2 | 84 |
| MBF 1001-3.7 | 10 | 1 | 10.15 | 9.3 | 1×3.7 | 0.84 | 2 | 113 |
| MBF 1001.5-3.7 | 10 | 1.5 | 10.2 | 9.1 | 1×3.7 | 1.25 | 2.8 | 120 |
| MBF 1002-3.7 | 10 | 2 | 10.3 | 8.6 | 1×3.7 | 2.8 | 5.3 | 134 |
| MBF 1002.5-3.7 | 10 | 2.5 | 10.3 | 8.6 | 1×3.7 | 2.7 | 5.3 | 133 |
| MBF 1003-3.7 | 10 | 3 | 10.3 | 8.2 | 1×3.7 | 3.9 | 7.2 | 140 |
| MBF 1005-2.7 | 10 | 5 | 10.3 | 8.2 | 1×2.7 | 3 | 5.2 | 103 |
| MBF 1202-3.7 | 12 | 12.3 | 10.6 | 1×3.7 | 3 | 6.5 | 156 | |
| MBF 1202.5-3.7 | 12 | 2.5 | 12.3 | 10.6 | 1×3.7 | 3 | 6.4 | 156 |
| MBF 1203-3.7 | 12 | 3 | 12.3 | 10.2 | 1×3.7 | 4.3 | 8.7 | 162 |
| MBF 1204-3.7 | 12 | 4 | 12.3 | 9.8 | 1×3.7 | 5.4 | 10.2 | 165 |
| MBF 1402-3.7 | 14 | 2 | 14.3 | 12.6 | 1×3.7 | 3.3 | 7.5 | 176 |
| MBF 1404-3.7 | 14 | 4 | 14.3 | 11.8 | 1×3.7 | 5.7 | 11.1 | 187 |
Nut dimensions |
Screw shaft inertial moment/mm kg·m²/mm |
Nut
mass kg |
Shaft masskg/m |
||||||||||
| Outer diameterD |
Flange diameter D₁ |
Overall length L₁ |
H | B₁ | PCD | d₁ | d₂ | h | Nut type |
Tw | |||
| 11 | 24 | 18 | 4 | 14 | 17 | 3.4 | 6.5 | 2.5 | I | 13 | 1.97×10-10 | 0.02 | 0.07 |
| 13 | 30 | 21 | 5 | 16 | 21.5 | 3.4 | 6.5 | 3 | I | 17 | 9.99×10-10 | 0.04 | 0.14 |
| 15 | 29 | 17 | 4 | 13 | 23 | 3.4 | Ⅱ | 17 | 9.99×10-10 | 0.03 | 0.21 | ||
| 15 | 29 | 18 | 4 | 14 | 23 | 3.4 | Ⅱ | 17 | 9.99×10-10 | 0.03 | 0.21 | ||
| 16 | 30 | 19 | 4 | 15 | 24 | 3.4 | Ⅱ | 18 | 3.16×10-⁹ | 0.03 | 0.36 | ||
| 20 | 40 | 28 | 6 | 22 | 30 | 4.5 | 8 | 4 | I | 24 | 3.16×10-⁹ | 0.1 | 0.19 |
| 20 | 38 | 26 | 5 | 21 | 30 | 4.5 | Ⅱ | 22 | 3.16×10-⁹ | 0.07 | 0.34 | ||
| 20 | 38 | 25 | 5 | 20 | 30 | 4.5 | Ⅱ | 22 | 3.16×10-⁹ | 0.06 | 0.32 | ||
| 21 | 39 | 28 | 5 | 23 | 31 | 4.5 | Ⅱ | 23 | 3.16×10-⁹ | 0.08 | 0.34 | ||
| 19 | 37 | 18 | 5 | 13 | 29 | 4.5 | Ⅱ | 21 | 7.71×10-9 | 0.04 | 0.57 | ||
| 19 | 37 | 20 | 5 | 15 | 29 | 4.5 | 一 | 一 | Ⅱ | 21 | 7.71×10-9 | 0.04 | 0.57 |
| 23 | 43 | 28 | 6 | 22 | 33 | 4.5 | 8 | 4 | I | 27 | 7.71×10-9 | 0.11 | 0.36 |
| 24 | 44 | 27 | 6 | 21 | 35 | 5.5 | Ⅱ | 26 | 7.71×10-9 | 0.09 | 0.55 | ||
| 24 | 44 | 30 | 6 | 24 | 35 | 5.5 | Ⅱ | 26 | 7.71×10-9 | 0.1 | 0.52 | ||
| 24 | 44 | 34 | 6 | 28 | 35 | 5.5 | Ⅱ | 26 | 7.71×10-9 | 0.12 | 0.56 | ||
| 25 | 47 | 30 | 8 | 22 | 36 | 5.5 | 9.5 | 5.5 | I | 29 | 1.60×10-8 | 0.15 | 0.58 |
| 26 | 46 | 27 | 6 | 21 | 37 | 5.5 | Ⅱ | 28 | 1.60×10-8 | 0.11 | 0.8 | ||
| 28 | 48 | 30 | 6 | 24 | 39 | 5.5 | Ⅱ | 30 | 1.60×10-8 | 0.14 | 0.77 | ||
| 28 | 48 | 33 | 6 | 27 | 39 | 5.5 | Ⅱ | 30 | 1.60×10-8 | 0.15 | 0.76 | ||
| 26 | 48 | 30 | 8 | 22 | 37 | 5.5 | 9.5 | 5.5 | I | 32 | 2.96×10-8 | 0.16 | 0.85 |
| 30 | 54 | 38 | 8 | 30 | 42 | 5.5 | 9.5 | 5.5 | I | 34 | 2.96×10-8 | 0.25 | 1.2 |
