NTN 51313 thrust ball bearing
- Brand
- NTN
- Category
- Bearings
- Subcategory
- Thrust ball bearings
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Other brands for this category
Ask us for alternatives. We check every equivalent against the part number and your application.
SKF and NTN: matching part numbers →FAG and NTN: matching part numbers →NSK and NTN: matching part numbers →NTN and RKB: matching part numbers →
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Decoding NTN 51313
- 513Series
- Thrust ball bearings, 513 series. Series differ in outside diameter and width even when the bore is the same.
- 13Bore
- Bore 65 mm (13 × 5).
51313 is the standard ISO basic designation, which sets the bearing type, series and bore.
Description
NTN 51313 measures 65 mm across the bore and 115 mm across the outside diameter; its height is 36 mm (65 x 115 x 36 mm).
NTN 51313 belongs to thrust ball 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 51313 and any equivalents.
An NTN thrust ball bearing carries axial load in a single direction. The assembly pairs a shaft washer and a housing washer with a ball row running between them, which suits equipment where the thrust is mainly vertical: conveyors, mixers, centrifugal pumps and lifting gear. MR Industrial Accessories LLC supplies these bearings to customers across the United States and in several Latin American countries, and can help you match a designation to your shaft.
Reading the part number tells you the bore before you open a catalog. The series is set by the first digits, and the digits that follow give the bore diameter: 51100 is a 10 mm bore, 51101 is 12 mm, 51102 is 15 mm, and the pattern continues through the series. When a slash appears, as in 511/500 or 511/530, the number after it states the bore diameter in millimeters for that series. That makes it straightforward to confirm the shaft size at the mounting point.
These bearings fit positions where thrust dominates and radial load is light. Typical examples include mining conveyors, industrial mixers, vertical centrifugal pumps, lifting winches and machine tools, as well as process equipment in food plants and extruders or blow molding machines in plastics. Because they take thrust in one direction only, orientation at assembly matters.
Selection comes down to the axial load, the rotation speed and the space available. Shaft-to-housing alignment has to be checked, since this design does not absorb angular misalignment. Grease or oil both work as lubrication, depending on the application and speed. Where dust or moisture is present, add protection at the sealing stage. Use suitable tooling during mounting so the washers are not damaged.
Cross-brand matching is possible when dimensions and load capacity line up. A designation from SKF, FAG or NSK, for instance, can often be traced to the equivalent NTN number. Send the part number or the dimensions by WhatsApp or email and the team will reply promptly with a quote, suggest equivalents and help you choose.
Dimensions
65 x 115 x 36 mm (d x D x H): boundary dimensions for basic designation 51313, according to ISO 104.
- Bore
- 65mm
- Outside diameter (D)
- 115mm
- Height (H)
- 36mm
SKF and other brands, same size
Other brands' pages with basic designation 51313: 65 x 115 x 36 mm (d x D x H) per ISO 104.
What they share are the ISO 104 boundary dimensions, not the specs: seals or shields, internal clearance, cage and load rating may vary with brand and suffix. Every quote is by full part number.
Frequently asked questions
- NTN 51313 bearing: what are its dimensions?
- NTN 51313 measures 65 mm across the bore and 115 mm across the outside diameter; its height is 36 mm (65 x 115 x 36 mm). Those are the boundary dimensions standardized in ISO 104 for basic designation 51313.
- In an NTN thrust bearing, what does the designation 51100 indicate?
- It identifies a bearing of the 511 series with a 10 mm bore, as defined by the series. The final digits give the shaft diameter in millimeters, so 51101 corresponds to 12 mm and 51102 to 15 mm.
- How should I select a thrust bearing for my equipment?
- Start with the axial load, the rotation speed and the mounting space. Confirm that the shaft and housing are aligned. If dust or moisture is present, plan for extra protection. With those details, the team can quote the NTN part number that fits.
- Can you supply equivalents to NTN thrust bearings from other brands?
- Yes. Given a part number from another brand, such as SKF, FAG or NSK, the team can identify the NTN equivalent when dimensions and load capacity match. Send the original designation by WhatsApp or email for a quote.