Single Row Cylindrical Roller Bearings
Built for demanding radial loads and reliable high-speed operation. TEDIN single row cylindrical roller bearings are available in NU, N, NJ and NUP designs for separable mounting, shaft positioning and continuous industrial service.
NU, N, NJ and NUP Types
Stable radial support for industrial equipment.
ID Size Range
50–1000mm
Precision Grade
P5 / P4 / P2
Structure Design
Wide Range Options
Optimized Geometry
Raceway & Roller Profile
Single Row Cylindrical Roller Bearings at a Glance
Use this quick reference to compare the main bearing designs, cage materials, clearance classes and bore options available for single row cylindrical roller bearing applications.
NU / N / NJ / NUP
Main design options for non-locating, floating and locating shaft positions.
Steel / Brass / PA
Cage materials selected according to speed, load, lubrication and operating temperature.
C2 / CN / C3 / C4
Clearance classes confirmed according to fit, temperature rise and operating conditions.
Cylindrical / Tapered
Bore configurations for standard mounting or sleeve-assisted installation.
NU, N, NJ and NUP Design Comparison
The rib arrangement determines whether a bearing allows axial displacement, locates the shaft in one direction, or provides two-way axial support.
NU
Outer ring with two ribs
- Outer
- Two fixed ribs
- Inner
- No ribs
- Axial
- Allows free displacement
- Position
- Non-locating side
N
Inner ring with two ribs
- Outer
- No ribs
- Inner
- Two fixed ribs
- Axial
- Allows free displacement
- Position
- Floating support
NJ
One-direction axial location
- Outer
- Two fixed ribs
- Inner
- One fixed rib
- Axial
- Locates in one direction
- Position
- Semi-locating side
NUP
Two-direction axial location
- Outer
- Two fixed ribs
- Inner
- One fixed rib and loose rib
- Axial
- Locates in both directions
- Position
- Locating side
Selection note: NU and N designs allow axial movement. NJ and NUP designs are used when the shaft must be located in one or both axial directions.
How to Select the Right Bearing Design
Select the bearing structure first, then confirm clearance, cage and bore type according to fit and operating temperature.
Shaft location
Decide whether the bearing should allow axial movement or locate the shaft.
Internal clearance
Use larger clearance for tight fits, higher temperature or higher speed.
Cage type
Select cage material by speed, load, lubrication and temperature range.
Bore type
Confirm standard cylindrical bore or tapered bore for sleeve mounting.
Free-end / Floating
NU / N
For axial movement caused by thermal expansion or mounting position.
One-way location
NJ
For shaft location in one axial direction.
Two-way location
NUP
For locating support in both axial directions.
Application Industries and Bearing Positions
Single row cylindrical roller bearings are commonly used in shaft positions requiring radial load capacity, controlled axial movement or one-side shaft location.
Electric Motors
Motor shaft support
Used at drive-end or non-drive-end positions to support radial load and rotor alignment.
Gear shaft end
Used for gear shafts requiring high radial load capacity and stable shaft location.
Pumps & Compressors
Rotor support
Applied in rotor support positions where clearance control and running stability are required.
Industrial Fans
Fan shaft support
Used in continuous operation with radial load, thermal expansion and moderate to high speed.
Auxiliary spindle / feed drive
Used where radial rigidity, running accuracy and controlled internal clearance are required.
Drive unit shaft
Suitable for drive shafts working under radial load, vibration and long operating cycles.
Controlled Production for Single Row Cylindrical Roller Bearings
TEDIN focuses on machining accuracy, roller matching, internal clearance and final inspection for NU, N, NJ and NUP cylindrical roller bearings.
Ring Grinding Accuracy
Bore, outside diameter, raceway geometry and rib faces are checked to support stable radial running performance.
Roller Sorting and Matching
Cylindrical rollers are grouped by diameter tolerance to improve load distribution and reduce uneven stress.
Cage and Clearance Check
Cage guidance, radial internal clearance and axial movement are verified according to NU, N, NJ or NUP design requirements.
Final Inspection and Packing
Finished bearings are inspected for dimensions, rotation, marking, anti-rust protection and export packing before shipment.
Raceway Processing
Grinding and dimensional control for bearing rings and raceway surfaces.
Dimensional Inspection
Checking bore, outside diameter, width, clearance and key tolerances.
Finished Bearings
Marking, anti-rust treatment and packing for standard or replacement orders.
What to Provide for Bearing Inquiry
To quote the correct single row cylindrical roller bearing, please provide the bearing designation or key dimensions together with operating requirements.
- Bearing designation Example: NU 2220, NJ 2316, NUP 308.
- Boundary dimensions Inner diameter, outer diameter and width.
- Design type NU, N, NJ, NUP or other rib arrangement.
- Precision class P0, P6, P5, P4 or special accuracy request.
- Internal clearance C2, CN, C3, C4 or clearance after mounting.
- Cage material Steel, brass, PA cage or application-specific cage.
- Quantity and delivery Required quantity, target delivery time and shipment terms.
- Drawing or application Drawing, sample, equipment model or working condition.
Single Row Cylindrical Roller Bearing FAQs
Answers to common selection and inquiry questions for NU, N, NJ and NUP single row cylindrical roller bearings.
What are single row cylindrical roller bearings used for?
Single row cylindrical roller bearings are used for radial shaft support where high radial load capacity, separable mounting and relatively high speed capability are required.
Common positions include electric motors, gearboxes, pumps, compressors, machine tools, construction machinery and industrial transmission systems.
What is the difference between NU, N, NJ and NUP cylindrical roller bearings?
The main difference is the rib arrangement and axial locating function.
- NU design: non-locating bearing, allows axial displacement of the shaft.
- N design: floating support, also allows axial displacement.
- NJ design: supports axial location in one direction.
- NUP design: supports axial location in both directions.
Should I choose NU or NUP for the bearing position?
Choose NU cylindrical roller bearings when the bearing position needs to accommodate thermal expansion or axial movement. Choose NUP cylindrical roller bearings when the shaft must be located axially in both directions.
For replacement orders, provide the existing bearing model or shaft arrangement drawing so the locating function can be checked before quotation.
When is C3 or C4 clearance required?
C3 or C4 internal clearance is commonly selected when interference fit, high operating temperature, heavy radial load or high speed may reduce the effective running clearance.
To confirm clearance, it is useful to provide shaft fit, housing fit, operating temperature, speed and load data.
Are brass cage cylindrical roller bearings available?
Yes. Single row cylindrical roller bearings can be supplied with different cage options, including steel cage, brass cage and polyamide cage depending on size, speed, temperature and application conditions.
Brass cage cylindrical roller bearings are often selected for heavy-duty machinery, shock load or higher operating temperature conditions.
Can you supply cylindrical roller bearings with tapered bore?
Yes. Some single row cylindrical roller bearings are available with cylindrical bore or tapered bore, depending on the bearing series and application requirement.
Please provide the bearing designation, shaft arrangement or drawing to confirm bore type before placing an order.
What information is needed for a quotation?
For a faster and more accurate quotation, send the following information:
- Bearing model, such as NU, N, NJ or NUP series code.
- Bore diameter, outside diameter and bearing width.
- Internal clearance, precision class and cage material if specified.
- Drawing, old bearing photos or cross-reference number for replacement.
- Quantity, application position and expected delivery time.
Need to confirm a replacement bearing?
Send your bearing model, dimensions, clearance, cage requirement or drawing. TEDIN can help check the suitable single row cylindrical roller bearing before quotation.
Explore Related Cylindrical Roller Bearing Pages
Compare other cylindrical roller bearing options for higher rigidity, heavier radial load, full complement design or custom working conditions.
Need Help Selecting a Single Row Cylindrical Roller Bearing?
Send your bearing number, drawing, dimensions, old bearing photos or operating conditions. TEDIN can check the structure, clearance, cage and precision requirements for your application.
- WhatsApp: 8613663889399
- Tel: +86 13663889399
- Email: info@tedinbearings.com
Standard models, replacement selection and drawing-based cylindrical roller bearing inquiries are welcome.