
NSK LM 78310 A tapered roller bearing
- Brand
- NSK
- Category
- Bearings
- Subcategory
- Tapered roller bearings
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Description
NSK LM 78310 A belongs to tapered roller 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 LM 78310 A and any equivalents.
Tapered roller bearings in the NSK LM A series are supplied as two separate pieces: the cone and the cup. Each is fitted independently, with the tapered rollers carrying the load between them. They take radial and axial forces acting in a single direction, so equipment normally uses them in pairs or in opposing positions to handle both directions. MR Industrial Accessories supplies these bearings to industrial and automotive users across the United States and Latin America.
Reading the part number helps you order the right piece. The letters at the start point to the dimension series, the digits that follow set the size inside that series, and the trailing letter shows a design or execution variant. You can see this layout in LM 78310 A and LM 104947 A: series prefix, size number, suffix letter. The suffix does not alter the bearing type, but it does affect internal geometry, so copy the complete reference when you ask for a quote.
Typical applications include reducers, transmission boxes, shafts on road machinery, material handling equipment, pumps and conveyor rollers. Automotive and agricultural machinery also use them where radial load and axial thrust occur together. Because the cone and cup are separable, installation is straightforward when each component enters the housing from a different side of the shaft.
Selection depends on the ratio between radial and axial load, the operating speed and the lubrication method. During mounting, align the cone with the cup, set axial clearance through nut or shim adjustment, and make sure a proper lubricant film forms. Good sealing keeps contaminants out, which is the most frequent cause of early failure in this bearing type.
Interchangeability across brands relies on dimensions and cross-references. A bearing from another maker with matching bore, outer diameter and width can do the same job, but check the contact angle and the suffix. Bring the original part number or a sample and we will identify a compatible option and quote it.
To request an NSK tapered roller bearing from this series, send the full part number by WhatsApp or email to MR Industrial Accessories. We will quote the exact model you specify. If you need a variant that is not listed, write to us with the part number or model and we will respond promptly.
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 order the correct bearing?
- Send the complete part number by WhatsApp or email, for example LM 78310 A or LM 104947 A. With that we will quote the exact model. A part number from another brand also works to find the equivalent by dimensions.
- Can only the cone or only the cup be mounted?
- Yes. These bearings are separable, so the cone and cup are mounted separately. It is advisable to order both components when replacing the assembly, unless the other raceway is in good condition and carries the same reference.
- What should I check during mounting?
- Alignment between cone and cup, axial clearance and lubrication. Excessive adjustment or an insufficient lubricant film shortens bearing life. Sealing that keeps dust and water out is also essential.

