
NSK LPFT 6340-3 ball screw
- Brand
- NSK
- Category
- Linear motion
- Subcategory
- Linear motion
- Series
- LPFT
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Description
NSK LPFT 6340-3 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 LPFT 6340-3 and any equivalents.
For machine tool axes, positioning tables and automation equipment, the NSK LPFT series ball screw turns rotary input into accurate linear travel. It is built for applications that call for rigidity and repeatable positioning. MR Industrial Accessories supplies this series to customers in the United States and Latin America, and can help you match the right diameter, pitch and nut configuration to your system.
Reading an LPFT code is straightforward once you know the pattern. The first digits give the nominal screw diameter in millimeters, the next give the pitch, and the number after the hyphen shows how many ball circuits the nut carries. So LPFT 2010-2.5 is a 20 mm screw with 10 mm pitch and a 2.5 circuit nut, while LPFT 2516-3 is a 25 mm screw with 16 mm pitch and three circuits. That last figure is what separates variants in terms of rigidity and load capacity, which makes the code a quick way to narrow down options.
Typical installations include CNC machining centers, milling and grinding machines, laser cutters, measuring equipment, manipulators and coordinate tables. Anywhere the axis must move smoothly and hold position without backlash, this type of screw is a common choice. Because it handles axial force in either direction, it suits repetitive positioning work in demanding shop environments.
When specifying a unit, work through the axial load, running speed, unsupported length and acceptable backlash. Lubrication and protection from chips, coolant and dust have a direct effect on how long the screw performs. Fitting also matters: the end supports must be aligned carefully, and nut preload should be set so the assembly runs without vibration. If any of these points are unclear, our team can help you define them before you order.
LPFT screws can often stand in for units from other makers when the main dimensions and pitch line up. Internal design and materials differ between brands, so performance is not identical even when the envelope matches. If you only have the competitor's code, send it over and we will identify the equivalent option. Tolerances and nut style are worth confirming before you swap a component.
To get a quote on the NSK LPFT series ball screw you need, message us on WhatsApp or by email with the complete code or your application measurements. We respond promptly with technical and commercial information, and we can also point you to suitable supports, nuts and related linear motion accessories.
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 suffix mean in an LPFT ball screw such as 2516-2.5?
- It tells you how many ball circuits the nut has. In 2516-2.5, that value is 2.5. A higher number generally means more rigidity, though friction can rise as well.
- Can I replace a ball screw from another brand with an NSK LPFT one?
- Often yes, provided the main dimensions and pitch match. Ball screws tend to follow common interchangeability dimensions, but preload and nut type should be checked. Send us the original code and we will identify the NSK equivalent.
- What lubrication do you recommend for an LPFT ball screw?
- The choice depends on speed and environment: a quality ball screw grease or lubricating oil can both work. Keep a consistent film and use suitable seals to block contamination. Ask us about the right lubricant for your setup.

