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Needle roller cage NTN 8E-KV41×49×21.8XS
- Manufacturer Part Number
- 8E-KV41×49×21.8XS
- Brand
- NTNOfficial distributor
- Category
- Bearings
- Subcategory
- Needle roller cages and components
- Series
- KV‥S
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Request your quote via WhatsApp or email, with the quantity and time frame you need.
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Description
NTN 8E-KV41×49×21.8XS is a needle roller cage reference, within Bearings. Request a quote for 8E-KV41×49×21.8XS via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.
The NTN KV series needle cage is a precision component that retains and guides the needles in needle roller bearings, allowing a compact design with high load capacity. It is used in applications where radial space is limited and smooth, precise movement is required. MR Accesorios Industriales is an official distributor of NTN and sells this series in Buenos Aires, Argentina.
The KV series designation is interpreted from its dimensions: the first number indicates the needle circle diameter, followed by the section dimensions. For example, 8E-KV10×13×12.8XS corresponds to a cage with a 10 mm bore diameter, 13 mm outside diameter and 12.8 mm width. The XS suffix indicates a specific construction variant. These codes allow you to quickly identify the size and configuration of the cage.
NTN KV series needle cages are used in industries such as automotive, machine tools, transmission equipment and agricultural machinery. In Argentina, they are common in gearboxes, pumps, compressors and roller systems where high rigidity and minimum friction are needed. Their design allows compact assemblies and tight tolerances, ideal for applications with oscillating or high-speed rotating movements.
To correctly select a KV cage, take into account the required diameter and width, as well as the type of lubrication and internal clearance. It is essential to verify alignment and cleanliness during mounting to avoid premature wear. The cage must be mounted with the needles correctly guided and with the proper clearance. Lubrication must be the one recommended for the application, ensuring a uniform film.
NTN KV series needle cages can be interchanged with those from other manufacturers that follow the same standardized dimensions. If you have another brand's part number, we can help you find the right equivalent. It is important to verify tolerances and cage design to ensure optimal operation. MR Accesorios Industriales advises you so that the part is compatible with your equipment.
To request a quote for your NTN KV series needle cage, just send us the part number or measurements on WhatsApp. At MR Accesorios Industriales we give you the solution you need, with the technical service that has distinguished us since 1945. Write to us and we will reply shortly.
This description provides guidance on the product type. Check the configuration and dimensions of this reference.
Dimensions
Dimensions and tolerances: Send us the part number via WhatsApp and we'll confirm dimensions, sealing, and internal clearance against the manufacturer's data sheet.
Frequently Asked Questions
- What does the XS suffix mean in the KV series?
- The XS suffix indicates a specific construction variant within the KV series. It may refer to a surface treatment, special tolerance or particular cage design. To confirm the exact characteristic, we recommend consulting our technical team when requesting a quote.
- How do I choose the right KV needle cage for my application?
- To choose correctly, you need to know the housing dimensions (diameter and width) and the load and speed conditions. It is also important to consider the type of lubrication and required internal clearance. With this data, we can advise you to select the exact model.
- Are NTN KV series cages interchangeable with other brands?
- Yes, as long as the dimensions and tolerances match international standards. If you have another brand's part number, we can help you find the equivalent. It is essential to verify the technical specifications to ensure correct mounting and optimal performance.

