NTN K81218J cylindrical roller thrust bearing
- Brand
- NTN
- Category
- Bearings
- Subcategory
- Cylindrical roller thrust bearings
- Series
- 812
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Description
NTN K81218J belongs to cylindrical roller thrust bearing, 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 K81218J and any equivalents.
For applications where the primary load is axial, the NTN 812 series cylindrical roller thrust bearing offers high load capacity and axial rigidity. This single-direction bearing is a practical choice for gearboxes, pumps, and other industrial equipment that require dependable thrust support. At MR Industrial Accessories LLC, we quote this series by exact part number through WhatsApp or email.
Understanding the part number helps in selecting the right bearing. The 812 designation identifies the dimension series for single-direction cylindrical roller thrust bearings. In a reference such as K81218J, the K indicates a cylindrical roller thrust assembly with cage, 812 is the series, 18 is the size, and J denotes a stamped steel cage. Recognizing these codes allows you to quickly specify the correct component.
These bearings are commonly used in metallurgy, cement, mining, and heavy machinery manufacturing. They suit gearboxes, presses, cranes, and material handling equipment where considerable axial loads are present. Their cylindrical roller design provides higher load capacity than ball thrust bearings, making them appropriate for demanding axial load conditions.
When selecting a cylindrical roller thrust bearing, consider the axial load, operating speed, and environment. Precise alignment between shaft and housing is critical, as these bearings do not compensate for misalignment. Adequate lubrication is necessary to manage heat and prolong service life. During mounting, maintain cleanliness to protect raceways and rollers.
If you have a part number from another manufacturer, we can help identify an equivalent NTN reference. Interchangeability depends on matching main dimensions and load capacity, as well as cage design and tolerances. Send us the details, and our team will assist with cross-referencing.
To request a quote, contact us via WhatsApp or email with the complete part number or dimensions. Our team responds promptly and can suggest equivalents or help you choose the right bearing for your application.
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 J suffix mean on an NTN cylindrical roller thrust bearing?
- The J suffix indicates a stamped steel cage. This cage guides the rollers and keeps them separated, contributing to smooth operation and load capacity. It is important to include the suffix when ordering a replacement.
- Can this bearing handle combined loads?
- Cylindrical roller thrust bearings are designed primarily for axial loads in one direction. They are not intended for significant radial loads. For combined loads, consult a specialist to select an appropriate bearing.
- How do I find an equivalent from another brand to the NTN 812 series?
- Compare the main dimensions—shaft diameter, outside diameter, and height—and the axial load capacity. If they match, the bearings are likely interchangeable. If you have doubts, send us the other brand's part number on WhatsApp or email, and we will advise you.