NTN K4×6×7.8XT2 needle roller cage
- Brand
- NTN
- Category
- Bearings
- Subcategory
- Needle roller cages and components
- Series
- K
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Description
NTN K4×6×7.8XT2 belongs to needle roller cage, part of our Bearings range. Tell us how many you need by WhatsApp or email and we'll get back to you promptly with a quote for K4×6×7.8XT2 and any equivalents.
Needle cages in the NTN K series hold and guide needle rollers inside bearings and transmission assemblies. They suit setups where radial room is tight but the bearing still has to carry high loads at a smaller diameter. MR Industrial Accessories LLC supplies this line to maintenance and purchasing teams across the United States and Latin America, and can help match the cage to your equipment.
A K series code packs three millimeter dimensions into one string, written with the × symbol between them: bore first, then outer diameter, then width. So K4×6×7.8XT2 means 4 mm bore, 6 mm outer diameter and 7.8 mm width. The XT2 ending marks a cage variant with its own material or treatment. The K‥T2 family follows the same three-dimension logic and the same suffix convention. Read every code as those three sizes in millimeters.
These cages show up in metalworking, food processing, mining and machine tool building. Plants run them in transmissions, pumps, compressors and roller systems where every millimeter of radial space counts. Because the needle assembly can sit directly on the shaft, the surrounding bearing design gets simpler and smaller. MR Industrial Accessories LLC serves customers throughout the United States and in several Latin American countries with these components for maintenance and production work.
Selection starts with the shaft and housing dimensions, plus the correct radial clearance for the cage. Installation calls for precise alignment and proper lubrication to prevent early wear. The cage has to be guided firmly without interference, and cleaning and lubricating the needles before mounting is good practice. For high-speed or variable-load duty, talk to our team about the most suitable variant.
Interchange is often possible with cages from other makers that use the same dimensional nomenclature. Give us another brand's code or an unidentified part and we will point you to the compatible equivalent. MR Industrial Accessories LLC supplies bearings, mounted units, power transmission parts, seals and maintenance tools, and can source the cage that fits your exact measurements. Send the code or dimensions by WhatsApp or email for a prompt quote.
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
- How do I read an NTN K series needle cage code?
- The letter K is followed by three millimeter measurements separated by ×: bore, outer diameter and width. K4×6×7.8XT2 is an example. The XT2 suffix denotes a specific variant. Send us the code if you want help interpreting it.
- Where are NTN K series needle cages used?
- In equipment with limited radial space that still needs high load capacity, such as machine tools, pumps, compressors and industrial transmissions. They are common in heavy machinery maintenance and production equipment.
- Can a cage from another brand be replaced by an NTN K series cage?
- Yes, when dimensions and design are equivalent, since needle cages generally follow common dimensional standards. Send the original code or the measurements and we will identify the compatible NTN reference and quote it.