Product page
Y-bearing (insert bearing) SKF XGRAE30NPPB
- Manufacturer Part Number
- XGRAE30NPPB
- Brand
- SKFOfficial brand
- Category
- Bearings
- Subcategory
- Y-bearing (insert bearing)
Other brands in this family
- FAG
- NTN
- TIMKEN
Ask us about alternatives. Equivalence is verified for each reference and application.
![]()
We respond promptly.
Request your quote via WhatsApp or email, with the quantity and time frame 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
SKF XGRAE30NPPB is a y-bearing (insert bearing) reference, within Bearings. Request a quote for XGRAE30NPPB via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.
The SKF XGRAE NPPB series Y-bearing is an insert with an extended inner ring, designed to be mounted in split plummer block housings or tensioners. Its sealed design makes it suitable for environments with dust, humidity or splashes, and it is used in equipment where alignment is not perfect. At MR Accesorios Industriales we carry it as part of our SKF bearing line, with more than 80 years of experience in the industry.
The designation of this series combines letters that indicate the insert type and its characteristics. XGRAE identifies a Y-bearing with an extended inner ring and a specific sealing and locking configuration. The number that follows — as in XGRAE30NPPB or XGRAE35NPPB — corresponds to the bore diameter. The NPPB suffixes indicate the type of sealing: two contact lip seals, which retain grease and block the ingress of contaminants. Knowing this nomenclature allows you to order the exact replacement without ambiguity.
These inserts are used in a wide variety of industries in Argentina. They appear in belt conveyors, bucket elevators, mixers, mills, packaging equipment and agricultural machinery. They are also common in washing lines and cold tunnels, where humidity demands reliable sealing. As part of the Y-bearing category, they are the usual choice when a bearing is needed that can be mounted on a shaft and housed in a support with some self-aligning capability.
To select the correct insert, verify the shaft diameter and the type of housing you will use. The NPPB seal is a contact seal, so it requires a shaft surface in good condition to avoid damaging the lip. During mounting, avoid striking the outer ring or the seals: apply force on the inner ring. Factory lubrication is usually sufficient for the service life, but in very dirty or humid environments periodic relubrication may be necessary. Housing alignment also affects performance.
When looking for equivalents, keep in mind that each manufacturer uses its own nomenclature. A Y-bearing with the same dimensions and type of sealing can be found in other brands, but the suffixes do not always match. Comparing the bore diameter alone is not enough: you must verify the inner ring width, the locking type and the sealing class. If in doubt, send us the complete code and the shaft dimensions, and we will help you identify the right option.
At MR Accesorios Industriales we carry SKF bearings as part of our power transmission catalogue. If you need a quote for an XGRAE30NPPB, an XGRAE35NPPB or any other variant of the series, write to us via WhatsApp with the code and quantity. We will reply as soon as possible with the alternatives that best suit your equipment.
This description provides guidance on the product type. Check the configuration and dimensions of this reference.
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 NPPB suffix mean on an SKF Y-bearing?
- The NPPB suffix indicates that the bearing has two contact lip seals, one on each side. These seals retain lubrication and protect against dust and humidity, making them suitable for demanding environments. It is important that the shaft is in good condition to avoid damaging the lip during mounting.
- How do I choose the right Y-bearing for my application?
- First identify the shaft diameter and the type of housing. Then verify the type of sealing and locking your equipment needs. If there is a lot of contamination, choose contact seals such as NPPB. If the speed is high, ask us about alternatives. Send us the data and we will advise you.
- Do SKF Y-bearings have equivalents in other brands?
- Yes, other manufacturers offer Y-bearings with similar dimensions, but the codes and suffixes change. To find an equivalent, you must compare diameter, width, type of sealing and locking. Do not rely only on the number. If you send us the original code, we will help you find the right option.

