Model: DK2005-3
THK DK2005-3 ball screw, screw outer diameter 20mm, lead 45mm. The ball screw assembly consists of a nut and a threaded shaft, either of which can be the moving element. The working principle of the ball screw is that hardened steel ball bearings move along hardened inner and outer raceways.
Precision ball screws are made by cutting threads into hardened material, which produces more accurate threads with tighter tolerances and lead accuracy - but they cost more than rolled linear ball screws.
Application fields of THK DK2005-3 ball screw
Machine tool industry: In the feed system of machine tools, ball screws are one of the key components. The high precision and high rigidity of THK DK2005-3 ball screws can ensure the processing accuracy and stability of machine tools. For example, using the advanced finite element analysis software ANSYS to perform modal analysis on the screw, its undamped free vibration can be studied to obtain the natural frequency and vibration model, providing an important reference for machine tool design.
Automation equipment: In various automated production lines and robot systems, precise linear motion control is required. THK DK2005-3 ball screws can meet the requirements of these equipment for high precision, high speed and high reliability.
Aerospace field: Aerospace equipment has extremely high requirements for the quality and performance of parts. THK's ball screws are also widely used in the aerospace field due to their excellent performance, such as aircraft landing gear.
DK 1404-4 DK 1404-6 DK 1605-3 DK 1605-4 DK 2004-3 DK 2004-4 DK 2005-3 DK 2005-4 DK 2006-3 DK 2006-4 DK 2008-4 DK 2504-3 DK 2504-4 DK 2505-3 DK 2505-4 DK 2506-3 DK 2506-4 DK 2508-3 DK 2508-4 DK 2510-3 DK 2510-4 DK 2805-3 DK 2805-4 DK 2806-3 DK 2806-4 DK 2810-4 DK 3204-3 DK 3204-4 DK 3205-3
DK 3205-4 DK 3205-6 DK 3206-3 DK 3206-4 DK 3210-3 DK 3210-4 DK 3212-4 DK 3610-3 DK 3610-4 DK 4010-3 DK 4010-4 DK 4012-3 DK 4012-4 DK 4016-4 DK 4020-3 DK 5010-3 DK 5010-4 DK 5010-6 DK 5012-3 DK 5012-4 DK 5016-3 DK 5016-4 DK 5020-3 DK 6310-4 DK6310-6 DK6312-3 DK 6312-4 DK 6320-3
| Model No. | Screw shaft outer diameter d |
Lead Ph |
Ball center- to-center diameter dp |
Thread minor diameter dc |
No.of loaded circuits Rows X tums |
Basic load rating | Rigidity K N/μm |
|
| Ca kN |
Coa kN |
|||||||
| DK 1404-4 | 14 | 4 | 14.5 | 11.8 | 4X1 | 5.4 | 10.2 | 180 |
| DK 1404-6 | 14 | 4 | 14.5 | 11.8 | 6×1 | 7.7 | 15.4 | 270 |
| DK 1605-3 | 16 | 5 | 16.75 | 13.1 | 3×1 | 7.4 | 13 | 160 |
| DK 1605-4 | 16 | 5 | 16.75 | 13.1 | 4×1 | 9.5 | 17.4 | 210 |
| DK 2004-3 | 20 | 4 | 20.5 | 17.8 | 3×1 | 5.2 | 11.6 | 190 |
| DK 2004-4 | 20 | 4 | 20.5 | 17.8 | 4×1 | 6.6 | 15.5 | 250 |
| DK 2005-3 | 20 | 5 | 20.75 | 17.1 | 3×1 | 8.5 | 17.3 | 200 |
| DK 2005-4 | 20 | 5 | 20.75 | 17.1 | 4×1 | 11 | 23.1 | 260 |
| DK 2006-3 | 20 | 6 | 21 | 16.4 | 3×1 | 11.4 | 21.5 | 410 |
| DK 2006-4 | 20 | 6 | 21 | 16.4 | 4×1 | 14.6 | 28.6 | 540 |
| DK 2008-4 | 20 | 8 | 21 | 16.4 | 4×1 | 14.6 | 28.8 | 270 |
| Nut dimensions | Screw shaft inertial moment/mmkg·m²/mm |
Nut masskg |
Shaft masskg/m |
|||||||||
| Outer diameterD |
Flange diameter D₁ |
Overall lengthL |
H | B₁ | B₂ | PCD | d,Xd₂Xh | Tw | Lubrication holeA |
|||
| 26 | 45 | 48 | 10 | 38 | 10 | 35 | 4.5×8×4.5 | 29 | M6 | 2.96×108 | 0.2 | 1 |
| 26 | 45 | 60 | 10 | 50 | 10 | 35 | 4.5×8×4.5 | 29 | M6 | 2.96X10 | 0.23 | 1 |
| 30 | 49 | 45 | 10 | 35 | 10 | 39 | 4.5×8×4.5 | 31 | M6 | 5.05X10- | 0.24 | 1.25 |
| 30 | 49 | 50 | 10 | 40 | 10 | 39 | 4.5×8×4.5 | 31 | M6 | 5.05×108 | 0.26 | 1.25 |
| 32 | 56 | 42 | 11 | 31 | 10 | 44 | 5.5×9.5×5.5 | 35 | M6 | 1.23×10-7 | 0.26 | 2.18 |
| 32 | 56 | 46 | 11 | 35 | 10 | 44 | 5.5×9.5×5.5 | 35 | M6 | 1.23×10-7 | 0.27 | 2.18 |
| 34 | 58 | 46 | 11 | 35 | 10 | 46 | 5.5X9.5X5.5 | 36 | M6 | 1.23×10-7 | 0.31 | 2.06 |
| 34 | 58 | 51 | 11 | 40 | 10 | 46 | 5.5×9.5×5.5 | 36 | M6 | 1.23×10-7 | 0.34 | 2.06 |
| 35 | 58 | 52 | 11 | 41 | 10 | 46 | 5.5×9.5×5.5 | 36 | M6 | 1.23×10-7 | 0.36 | 1.93 |
| 35 | 58 | 59 | 11 | 48 | 10 | 46 | 5.5×9.5×5.5 | 36 | M6 | 1.23×10-7 | 0.39 | 1.93 |
| 35 | 58 | 69 | 11 | 58 | 15 | 46 | 5.5×9.5×5.5 | 36 | M6 | 1.23×10-7 | 0.45 | 2.06 |
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