NSK DFT 12520-7.5D ball screw
- Brand
- NSK
- Category
- Linear motion
- Subcategory
- Linear motion
- Series
- DFT
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Description
NSK DFT 12520-7.5D belongs to ball screw, part of our Linear motion range. Tell us how many you need by WhatsApp or email and we'll get back to you promptly with a quote for DFT 12520-7.5D and any equivalents.
For machine tools, automation cells and positioning axes, the NSK DFT series ball screw turns rotary input into accurate linear travel while keeping friction low. It suits equipment where repeatability and rigidity matter, from machining centers to Cartesian systems.
The part number tells you the main geometry. Take DFT 4510-7.5D: the first figure is the nominal screw diameter, 45 mm, and the number after the hyphen is the lead, 7.5 mm. DFT 8020-7.5D follows the same logic with an 80 mm diameter and a 7.5 mm lead. The D at the end marks a particular configuration inside the series, usually tied to the nut design or preload. If any digit is unclear, our team can decode the full reference with you.
These screws appear in metalworking, automotive, food processing and petrochemical operations, on milling machines, CNC lathes, presses, robots and handling equipment. Plants use them wherever an axis has to stop at an exact point again and again. They are also a common choice when a machine is being rebuilt or its linear system upgraded.
Selection starts with axial load, speed, the distance between supports and the lubrication method. In areas with chips, dust or coolant, the sealing and protection you specify will affect how long the screw performs. Support alignment and nut preload also shape rigidity and service life, so they belong in the same conversation. Grease or oil should be applied according to the manufacturer's instructions for the specific application.
Interchange between brands is possible when diameter, lead, length and nut type line up, but tolerances and load capacities differ from one maker to another. Matching the main dimensions is not enough; the support interface and preload also need checking. If you are holding a part number from another brand, we can review compatibility and propose a suitable alternative.
To get a quote, send the NSK DFT series part number or the dimensions you need by WhatsApp or email. We confirm the exact reference and help you fit it correctly into the machine. Variants within the same series can also be reviewed when your equipment calls for a different setup.
Dimensions
Dimensions and tolerances: Message us the part number on WhatsApp and we'll verify its dimensions and version with the manufacturer's datasheet.
Frequently asked questions
- What does the D suffix indicate on a DFT screw?
- It points to a specific configuration within the DFT series, which can involve the nut type, preload or a construction detail. Share the complete part number and we will confirm what it means for your unit.
- How do I pick the right lead?
- Lead sets travel per revolution and linear speed. A larger lead favors fast movement, while a smaller lead gives finer resolution and higher load capacity. Consider speed, precision and axial load together, and we can help narrow it down.
- What lubrication should I use?
- Grease or oil can both be used, depending on the application and the manufacturer's recommendations. Grease is typical in standard setups; oil is often chosen for high speed or elevated temperature. Following the instructions protects performance and service life.