Cylindrical Roller Bearings
Cylindrical roller bearing NUP2305
Cylindrical roller bearing NUP2305, single-row NUP (outer ring with two flanges, inner ring with one fixed flange and one loose flange ring; axial location in both directions), boundary dimensions 25 mm × 62 mm × 24 mm. Specifications below are model-bound catalog values; send your application details through the RFQ for a confirmed quotation.
Last updated: 2026-10
Specifications
| Specification | Value |
|---|---|
| Bore diameter (d) | 25 mm |
| Outside diameter (D) | 62 mm |
| Width (B) | 24 mm |
| Minimum chamfer (r min.) | 1.1 mm |
| Basic dynamic load rating (Cr) | 53.4 kN |
| Basic static load rating (C0r) | 40.9 kN |
| Fatigue load limit (Cu) | 5.7 kN |
| Limiting speed, grease lubrication | 9100 min-1 Catalog limiting speed — verify suitability for your application before use. |
| Limiting speed, oil lubrication | 14000 min-1 Catalog limiting speed — verify suitability for your application before use. |
| Roller complement diameter (Fw) | 35 mm |
| Reference mass | 0.36 kg |
All values above are model-bound catalog values traceable to a collected source. Fields without collected evidence are not published; ask with your inquiry and we confirm them at quotation.
Applications and selection notes
Cylindrical roller bearings carry high radial load at high speed and, in the separable executions, allow the ring with the roller-and-cage assembly to be mounted independently — which simplifies mounting on and removal from the shaft. Typical service: electric motors, machine-tool spindles, traction motors, crushers and gearboxes where radial capacity and stiffness matter more than axial capacity.
The NU execution (N205, NU2305 on this site) has two integral flanges on the outer ring and none on the inner, so it takes no axial load and permits free axial displacement of the shaft relative to the housing — the usual non-locating position. The N execution places the flanges the other way round with the same floating function.
How to read the specification table
Read the load ratings and limiting speeds in the table as designation-bound catalog values. Because the type is usually paired with a separate locating bearing, the position’s axial behaviour — not the radial rating — is what the selection hinges on. Confirm which ring displaces, and match the internal clearance to the fit and thermal gradient between shaft and housing.
Further reading
NUP2305 — buying questions
What does the designation NUP2305 mean?
NUP2305 is a standard boundary-dimension designation: the dimension series fixes the outside diameter and width proportions, and the bore code fixes the bore diameter — 25 mm for this bearing. Two bearings carrying the same designation from conforming manufacturers are dimensionally interchangeable; execution (seals, clearance class, cage) is the part that can differ, so state the execution you need when you request a quotation.
Are the catalog load rating and speed of NUP2305 enough for my application?
The table lists Cr = 53.4 kN and a catalog limiting speed of 9100 min-1. The load rating is the starting point of a life calculation, and the limiting speed is a catalog value for the manufacturer’s execution — seals, fits, temperature and lubrication all reduce the usable speed in a real assembly. Send the application conditions with your inquiry and we confirm suitability before quoting; do not size from the catalog speed alone.
What information do you need to quote NUP2305?
Four things, in one message: the designation (and execution — seals, clearance class, precision class, if not standard), the quantity, the destination country, and any documents you require. Application conditions such as speed, load direction and temperature are welcome and let us verify the execution instead of assuming it. Quotation, lead time and the exact document set come back in writing.
Ordering & documentation
Documents
Standard export documentation — commercial invoice, packing list and certificate of origin — accompanies every shipment. The exact document set for your order, and any material or inspection paperwork you require alongside it, is confirmed in writing at quotation before the order is placed.
Quotation
To quote NUP2305, send: the designation and required execution, quantity, destination country, and any required documents. Adding the application conditions (speed, load direction, temperature, fit) lets us confirm the execution and clearance class instead of quoting blind.
Sample & supply
Sample quantities of standard-designation bearings such as NUP2305 are available for evaluation before a bulk order. Bulk supply runs through own production plus a qualified outsourcing network, so catalog items are not capped by own-factory capacity; the confirmed lead time is stated in the quotation.
Current confirmed lead-time practice: 15-30 business days for bulk standard bearings; 5-10 for samples. Standard quality system: ISO 9001.
Storage & shipping
Bearings are packed moisture-protected for export and should be stored flat, in unopened original packaging, in a dry indoor area away from temperature swings. Do not unwrap or rotate bearings before mounting; rotate only by the ring being pressed, never through the rolling elements.