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DKF series
NANJING GONGYI
DKF Big Lead and High Speed Ball Screw |

Different from standard ball screws, the DKF Big Lead And High Speed Ball Screw features a optimized big lead structure, which greatly boosts linear motion speed without sacrificing basic transmission accuracy. Adopting classic ball screw rolling friction transmission principle, it realizes bidirectional conversion between rotary motion and linear motion. Compared with traditional slide screw structures, its rolling friction design effectively reduces friction resistance, minimizes energy loss, and improves transmission efficiency and operational smoothness. This product series belongs to upgraded independent innovative products with proprietary intellectual property rights, featuring stable high-speed operation, strong wear resistance, low noise and long service life. All products are manufactured with standardized and mature processes to ensure consistent high quality and cost advantages for bulk procurement.
Thanks to its outstanding high-speed response and stable transmission performance, the DKF Big Lead And High Speed Ball Screw is widely applicable for industrial equipment and precision instruments that require fast linear displacement and high operational efficiency. It is perfectly matched with CNC machine tools, automated production equipment, precision processing machinery, large industrial automation systems and other core industrial scenarios. Whether it is high-frequency fast reciprocating motion of small precision equipment or stable high-speed operation of large heavy-duty machinery, this big lead high-speed ball screw can maintain reliable working performance, meeting the diversified high-speed motion demands of modern industrial manufacturing.
As a leading domestic ball screw manufacturer with decades of industry experience, our factory successfully developed China’s first batch of ball screw products in 1964, occupying a leading position in domestic R&D and manufacturing capabilities. Aiming at the market demand for high-speed, high-precision and large-load industrial transmission components, we have completed independent R&D and upgrading of the DKF big lead high-speed ball screw series. This product, together with JF/JFZD large heavy-load ball screws, forms our core independent intellectual property product system, with a total of 14 authorized and patented technologies, realizing independent control of core production technologies.
In terms of production technology, we take the lead in applying professional induction hardening heat treatment technology for ball screws, which significantly enhances product surface hardness, wear resistance and overall processing efficiency. To further improve product quality and production capacity, we have fully phased out outdated traditional processes and introduced world-class German high-speed hard whirling processing technology. The technological upgrade comprehensively optimizes product precision consistency and structural stability. Equipped with fixed-length pre-processing production mode, we greatly shorten the production cycle, realizing a fast delivery lead time of 15 days, which can efficiently meet customers’ urgent ordering and bulk procurement needs.
Our DKF big lead high-speed ball screw supports full-spec customized and mass production with ultra-wide parameter coverage. The product lineup covers a minimum diameter of 6mm, a minimum lead of 1mm, a maximum diameter of 245mm, and a maximum single processing length of 10m, with a maximum load capacity over 125 tons. It can provide multi-grade precision products including 1.5m P0, 2m P1, 4m P2, 5m P3 and 10m P5 grades. With complete specifications, excellent high-speed performance, reliable precision and super strong production capacity, we have become a professional and trustworthy supplier of high-speed big lead ball screws for global industrial customers.
Note:
1) Kc is the theoretical calculated value when the preload Fp is 0.1Ca and the axial load F is 0.3Ca;
2) When the axial load F is not equal to 0.3Ca,
Where Kc is the stiffness value in the table; 
3) This type of ball screw is suitable for medium and low speed applications;
4) Normal working ambient temperature range ±80℃;
5) Any special request should be made at the time of ordering.

Code and spec. | Nominal dia. | Basic lead | Outer dia.off | Ball dia. | Bottom dia. | Number of | Basic rated load | Rigidity K C N/μm | Mounting &connecting dimension | Code and spec. | |||||||||||||
Dynamic load C₂ | Staic bad Co | D₁ (g6) | D2() | L₂ | D₃ | B | D₄ | D₅ | TYPE | T | T₁ | M | L₁ | ||||||||||
DKF1616-2 | 16 | 16 | 16 | 13.7 | 2.778 | 2 | 5.2 | 8.3 | 358 | 32 | 32 | 10 | 53 | 12 | 42 | 4.5 | 1 | 17 | 34 | M6 | 45 | DKF1616-2 | |
DKF2020-2 | 20 | 20 | 20 | 17.4 | 3.175 | 2 | 7.0 | 12.0 | 441 | 39 | 39 | 10 | 62 | 12 | 50 | 6.6 | 24 | 48 | M6 | 60 | DKF2020-2 | ||
DKF2525-2 | 25 | 25 | 25 | 22 | 3.969 | 2 | 10.4 | 18.8 | 544 | 47 | 47 | 10 | 68 | 12 | 57 | 6.6 | 27 | 54 | M6 | 72 | DKF2525-2 | ||
DKF3232-2 | 32 | 32 | 32 | 28.1 | 4.763 | 2 | 14.8 | 28.4 | 667 | 54 | 54 | 10 | 86 | 14 | 71 | 9 | 33 | 66 | M6 | 88 | DKF3232-2 | ||
DKF3240-2 | 32 | 40 | 32 | 28.2 | 5 | 2 | 15.7 | 30.2 | 665 | 58 | 58 | 10 | 88 | 14 | 73 | 9 | 33 | 66 | M6 | 112 | DKF3240-2 | ||
DKF4040-2 | 40 | 40 | 40 | 34.9 | 6.35 | 2 | 24.3 | 48.1 | 841 | 70 | 70 | 20 | 100 | 14 | 85 | 9 | 37.5 | 75 | M8x1 | 101 | DKF4040-2 | ||
DKF5050-2 | 50 | 50 | 50 | 44.9 | 6.35 | 2 | 26.8 | 60.2 | 1001 | 82 | 82 | 30 | 118 | 16 | 100 | 11 | 46 | 92 | M8×1 | 134 | DKF5050-2 | ||
DKF6363-2 | 63 | 63 | 63 | 57.9 | 6.35 | 2 | 29.7 | 77.0 | 1213 | 95 | 95 | 30 | 135 | 22 | 115 | 13.5 | 50 | 100 | M8×1 | 151 | DKF6363-2 | ||
DKF8040-4 | 80 | 40 | 80 | 70.9 | 12.7 | 4 | 239.8 | 204.0 | 1582 | 140 | 140 | 30 | 190 | 32 | 165 | 13.5 | 80 | 160 | M8×1 | 210 | DKF8040-4 | ||
DKF10040-4 | 100 | 40 | 97 | 87.9 | 12.7 | 4 | 267.0 | 889.3 | 7605 | 160 | 160 | 30 | 220 | 36 | 190 | 17.5 | 90 | 180 | M8×1 | 230 | DKF⊃1;0040-4 | ||
DKF10050-4 | 100 | 50 | 97 | 87.9 | 12.7 | 4 | 265.4 | 885.3 | 7568 | 160 | 160 | 30 | 220 | 36 | 190 | 17.5 | 90 | 180 | M8×1 | 270 | DKF10050-4 | ||
DKF10050-4 | 100 | 50 | 97 | 85.6 | 15.875 | 4 | 360.5 | 1097.9 | 7786 | 170 | 170 | 30 | 244 | 36 | 210 | 22 | 95 | 190 | M8×1 | 270 | DKF10050-4 | ||
DKF12560-3 | 125 | 60 | 124 | 114.4 | 12.7 | 3 | 220.8 | 811.6 | 6684 | 190 | 190 | 30 | 264 | 36 | 220 | 22 | 110 | 220 | M8×1 | 250 | DKF12560-3 | ||