NTN 8Q-K20×28×25 needle roller cage
- Brand
- NTN
- Category
- Bearings
- Subcategory
- Needle roller cages and components
- Series
- K
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Description
NTN 8Q-K20×28×25 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 8Q-K20×28×25 and any equivalents.
Needle cages in the NTN K series hold and guide the needle rollers of a radial bearing. They suit assemblies where radial room is tight and the bearing still has to carry a substantial radial load for its size. MR Industrial Accessories LLC supplies this line to maintenance and purchasing teams in the United States and Latin America, and can quote any size by part number.
The code tells you the geometry. Take 8Q-K12×15×10: the first figure is the cage bore, 12 mm, then Q for the cage type, then the outside diameter of 15 mm and the 10 mm width. The same reading applies to 8Q-K85×93×30, a much larger cage. Where a roller diameter appears in the code, it belongs to the same sequence.
You will find these cages in gearboxes, pumps, compressors, machine tools and conveying equipment, and in automotive, metalworking, textile and food plants. They keep the bearing section small, which matters when the housing cannot grow, and they simplify assembly where radial stiffness is needed.
Selection comes down to shaft diameter, the radial space you have and how the assembly is lubricated. Shaft and housing alignment should be checked, since misalignment shortens service life. The lubricant has to match the speed and temperature of the application, and the assembly should be sealed against particles. When fitting, confirm the needles sit correctly in the cage and that the cage has not been distorted.
Cages built to the same standard dimensions can be exchanged between manufacturers if tolerances and needle type match. Send us a code from another brand or an unmarked part and we will identify the NTN K series equivalent. Because interchangeability depends on the standard and the application, it is worth checking with us before you replace.
For a quote, send the part number or the exact dimensions by WhatsApp or email and our team will reply promptly, suggest equivalents and help you choose the right cage for the equipment.
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 a code such as 8Q-K12×15×10?
- The numbers give the cage dimensions: 12 mm bore, 15 mm outside diameter and 10 mm width. The K identifies the series and the Q the cage type, so you can match the part to the space available.
- Will this cage fit my bearing?
- Check that the cage dimensions match your shaft and housing and that the needle type is correct. If you only have another manufacturer's code, send it to us and we will point you to the NTN K series equivalent.
- What lubricant should I use?
- It depends on the speed and temperature of the application. A grease or oil that maintains a proper lubricating film works; tell us about your equipment and we will advise.