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Tapered roller bearing NTN 4T-LM78349†/LM78310C††
- Manufacturer Part Number
- 4T-LM78349†/LM78310C††
- Brand
- NTNOfficial distributor
- Category
- Bearings
- Subcategory
- Tapered roller bearings
- Series
- J
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Request your quote via WhatsApp or email, with the quantity you need.
Can't find the exact model? Write to us with the part number or model you're looking for: we'll find it and quote it, even if it's not listed in the catalog.
Description
NTN 4T-LM78349†/LM78310C†† is a reference of tapered roller bearing, within Bearings. Request a quote for 4T-LM78349†/LM78310C†† via WhatsApp or email with the quantity you need; we respond promptly with the quote and equivalents.
The NTN J series tapered roller bearing is a component designed to support combined radial and axial loads. Its cone and cup geometry allows adjustable mounting, ideal for applications requiring high load capacity and rigidity. It is used in industrial machinery, automotive and transmission equipment. MR Accesorios Industriales is an official NTN distributor.
The NTN J series designation is interpreted from its codes. For example, 4T-LM78349†/LM78310C†† indicates a cone and cup assembly: the prefix 4T- identifies the series, LM indicates the tapered roller family, and the following numbers define dimensions and angles. Suffixes such as C or † provide design variants, such as contact angle or finish. Knowing these codes allows you to select the correct part for each application.
These bearings are used in industries such as automotive, metallurgy, cement and food processing. In Argentina, they are common in gearboxes, transmission shafts, kiln rollers, pumps and industrial fans. Their ability to support combined loads makes them suitable for equipment subjected to variable stresses, such as those found in production plants and maintenance workshops.
To select the right bearing, take into account radial and axial load, rotation speed and environmental conditions. Sealing and lubrication are critical: choose the lubricant according to temperature and contamination. During mounting, ensure precise alignment and correct axial adjustment to avoid premature failures. Internal clearance must be verified according to the equipment specifications.
NTN J series tapered roller bearings are interchangeable with those of other brands that follow the same dimensions and tolerances. If the customer brings a code from another brand or an unidentified part, at MR Accesorios Industriales we tell you the compatible equivalent. Interchangeability depends on dimensions and contact angle, so it is essential to verify this data before replacing.
To request a quote for the bearing you need, send the code or exact size via WhatsApp. At MR Accesorios Industriales we'll quote it shortly. If you're looking for a specific variant, write to us with the model and we'll advise you so you can find the right part for your equipment.
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 designation 4T-LM78349†/LM78310C†† mean?
- It is a cone and cup assembly from the NTN J series. The prefix 4T- indicates the series, LM the tapered roller family, and the numbers define dimensions and angles. Suffixes such as C or † provide design variants.
- How do I choose the lubricant for a tapered roller bearing?
- The lubricant depends on operating temperature, speed and contamination level. For high temperatures, use synthetic greases; for humid environments, lubricants with corrosion inhibitors. Consult the equipment manufacturer's recommendations.
- Can I replace a bearing from another brand with an NTN J series one?
- Yes, if the main dimensions and contact angle match. Tapered roller bearings are usually interchangeable between brands that follow the same standards. Always verify dimensions and tolerances before mounting.