SKF LUNF 40 linear motion
- Brand
- SKF
- Category
- Linear motion
- Subcategory
- Linear motion
We reply promptly.
Tell us the quantity you need and request a quote by WhatsApp or email.
Can't find the exact model? Tell us the part number or model you need. We'll track it down and quote it, whether or not it appears in our catalog.
Description
SKF LUNF 40 belongs to linear motion, 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 LUNF 40 and any equivalents.
A SKF LUNF linear unit pairs a linear bearing with a machined housing, so it can be bolted straight onto a fixed structure and carry loads along a straight path with little friction. Machine tools, automation equipment and handling systems are typical homes for it. MR Industrial Accessories LLC supplies this line and can walk you through picking the variant that fits your application.
Read the LUNF code letter by letter: L for linear unit, U for the housing or mounting unit, N for the standardized design, F for the fixing or housing type. The figure that follows, as in LUNF 40, points to the size or nominal shaft diameter the unit slides on. Sealing and preload options differ from one size to the next, and you choose them based on the environment and the precision the job demands.
You will find these units in automotive, food, woodworking and metallurgy operations, wherever linear motion has to repeat accurately. Cutting tables, in-plant conveyor systems, presses and testing equipment are common examples, along with packaging machines and positioning devices that need rigidity and repeatability. Because the format is compact, a linear axis can be built from very few components.
Selection comes down to the load the unit will carry, the travel speed and the conditions around it. Where dust, chips or humidity are present, sealing matters most, since the right protection keeps contaminants out of the bearing. Use the lubricant the manufacturer specifies and renew it according to how the unit is used. Shaft and housing alignment avoids side loads and helps the unit last; a correct fit during assembly cuts vibration and noise.
SKF linear units can be swapped for equivalents from other makers, but dimensions and capacities are not standardized across the board. Before you replace one, check mounting dimensions, shaft height, fixing type and load capacity side by side. Often another brand will do the job while keeping performance, as long as you confirm it matches the existing shaft and housing. MR Industrial Accessories LLC can handle that comparison for you.
For a linear unit on your equipment, send the full part number over WhatsApp. The team at MR Industrial Accessories LLC will help you settle on the right variant and get your quote back to you quickly.
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 40 in LUNF 40 stand for?
- It refers to the size or nominal diameter of the shaft the unit mounts on. That figure is not a universal measurement, since each maker may use its own scale. When replacing a unit, check the actual mounting dimensions instead of trusting the number alone.
- Should I choose a sealed or an open unit?
- It comes down to where the unit works. Dust, chips, liquids or humidity call for reinforced sealing to keep the bearing protected. A standard version can be enough in a clean, controlled setting. Your choice here affects both service life and how often maintenance is needed.
- Is it possible to replace an SKF unit with another brand?
- Often yes, though dimensions and capacities are not standardized universally. Compare mounting dimensions, shaft height, fixing type and load capacity before swapping. Send us the original part number and we will help you locate a compatible alternative.