NTN NU1021 cylindrical roller bearing
- Brand
- NTN
- Category
- Bearings
- Subcategory
- Cylindrical roller bearings
We reply promptly.
Tell us the quantity you need and request a quote by WhatsApp or email.
Other brands for this category
Ask us for alternatives. We check every equivalent against the part number and your application.
NSK and NTN: matching part numbers →NTN and RKB: matching part numbers →
Can't find the exact model? Tell us the part number or model you need. We'll track it down and quote it, whether or not it appears in our catalog.
Decoding NTN NU1021
- NU 10Series
- Cylindrical roller bearings, NU 10 series. Series differ in outside diameter and width even when the bore is the same.
- 21Bore
- Bore 105 mm (21 × 5).
NU 1021 is the standard ISO basic designation, which sets the bearing type, series and bore.
Description
NTN NU1021 measures 105 mm across the bore and 160 mm across the outside diameter; its width is 26 mm (105 x 160 x 26 mm).
NTN NU1021 belongs to cylindrical 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 NU1021 and any equivalents.
When equipment runs under continuous radial load, the NTN NU series cylindrical roller bearing is a common choice. Its cylindrical rollers and steel cage support demanding industrial duty. You will find these bearings in heavy machinery, gearboxes, pumps and transmission systems. MR Industrial Accessories LLC supplies this series to customers across the United States and Latin America.
Reading the NU code helps you specify the right bearing. The letters NU mean the inner ring has no flanges, so the shaft and housing can shift axially relative to each other. The numbers that follow give the size and dimensional series: NU208 is a light series bearing with a 40 mm bore, while NU10/500 is a larger size. Suffixes, when present, indicate additional features such as a brass cage, special heat treatment or internal clearance, following NTN coding.
These bearings appear in metallurgy, cement, mining and food processing plants. They are used in speed reducers, conveyor belts, mills, centrifugal pumps and machine tools. Their design handles high radial loads and resists fatigue, making them suitable for continuous operation. When axial loads are also present, they are often mounted alongside bearings that take those forces.
Selecting an NU bearing requires attention to radial load, speed and operating environment. Mounting calls for precise shaft and housing alignment plus a proper fit to prevent distortion. Grease or oil lubrication must suit the temperature and speed. In dirty conditions, add seals or oil seals for extra protection. After mounting, check internal clearance to confirm smooth running and long service life.
Cylindrical roller bearings from other brands with similar designations may be interchangeable, but always confirm dimensions, tolerances and load capacity before substituting. NTN offers many variants in the NU series, so expert advice is useful. MR Industrial Accessories LLC can help you find the right bearing for your application.
To request a quote for an NTN NU series cylindrical roller bearing, send the part number or dimensions via WhatsApp or email. We reply promptly and can suggest a compatible alternative if needed. MR Industrial Accessories LLC is here to help keep your equipment running.
Dimensions
105 x 160 x 26 mm (d x D x B): boundary dimensions for basic designation NU 1021, according to ISO 15.
- Bore
- 105 mm
- Outside diameter (D)
- 160mm
- Width (B)
- 26mm
SKF and other brands, same size
Other brands' pages with basic designation NU 1021: 105 x 160 x 26 mm (d x D x B) per ISO 15.
- Need the SKF NU 1021? We can also quote:NU 1021 MLNU 1021 ML/C3
- FAGNU1021-XL-M1
- NSKNU1021
- RKBNU 1021
What they share are the ISO 15 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 NU1021 bearing: what are its dimensions?
- NTN NU1021 measures 105 mm across the bore and 160 mm across the outside diameter; its width is 26 mm (105 x 160 x 26 mm). Those are the boundary dimensions standardized in ISO 15 for basic designation NU 1021.
- What does the NU designation mean in a cylindrical roller bearing?
- NU means the inner ring has no flanges, allowing axial displacement. The following numbers define the size and dimensional series. Suffixes add details such as cage type, heat treatment or internal clearance.
- How do I choose the right NU bearing for my application?
- Consider radial load, speed, temperature and environment. Also factor in lubrication and fit. A specialist can help you select the most suitable one. Send your equipment data via WhatsApp and we'll advise you.
- Are NTN NU bearings interchangeable with other brands?
- They may be interchangeable if dimensions, tolerances and load capacity match. Always verify specifications before replacing. If you send us another brand's part number, we'll tell you the corresponding NTN equivalent.