SKF NA 6907 needle roller bearing
- Brand
- SKF
- Category
- Bearings
- Subcategory
- Needle roller bearing
We respond promptly.
Since 1945 · Martínez, Buenos Aires, Argentina
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Other brands in this category
Ask us about alternatives. Equivalence is verified for each reference and application.
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Description
SKF NA 6907 is a reference of needle roller bearing, within Bearings. Request a quote for NA 6907 via WhatsApp or email with the quantity you need; we respond promptly with the quote and equivalents.
A needle roller bearing uses very thin, long rollers in relation to their diameter —the needles— instead of balls or standard cylindrical rollers. This allows it to support a high radial load with a much smaller available space than any other type of bearing, which is the reason it is chosen.
The SKF NA series has complete inner and outer rings, unlike other needle designs that only have a cage with needles or an outer ring. The designation combines the series number with the coded bore and outside diameters; suffixes such as RS indicate sealing on one or both sides.
It is used in gearboxes, gear pumps, steering mechanisms, guide rollers and any point on a machine where there is little radial space available but the load is significant. It is common to find it in compact equipment where a ball or cylindrical roller bearing of the same capacity does not fit.
Assembly is more demanding than that of a ball bearing: since it has no capacity to absorb misalignment, the shaft and housing must be well aligned and with the correct fit tolerance, because a misaligned needle roller bearing is destroyed quickly.
Among manufacturers there are needle series equivalent by the same bore, outside diameter and width dimensions, although the variety of designs —with or without inner ring, with or without sealing— is greater than in other bearing types. It is advisable to confirm the exact design before ordering the replacement.
Send us the full code or the three dimensions (bore, outside diameter and width) by WhatsApp and we will confirm the available equivalent. MR Accesorios Industriales has the SKF NA series.
Dimensions
Dimensions and tolerances: Send us the part number via WhatsApp and we'll confirm the dimensions and version against the manufacturer's data sheet.
Frequently Asked Questions
- What advantage does a needle roller bearing have over a ball bearing?
- With the same radial space available, it supports more load, because the needles have much more contact surface than a ball of the same outside diameter.
- Why does the NA series have an inner ring?
- Because unlike other needle designs, the NA does not need the shaft itself to act as the raceway: the inner ring protects the shaft and makes mounting and dismounting easier.
- Can it be replaced by a needle design from another brand?
- Yes, if the dimensions and design type match, with or without inner ring, sealed or open. Send us the code and we will confirm it.