NJG2348-VH bearing: complete specifications & equivalents
The NJG2348-VH is a ISO 15 radial bearing sized 240 x 500 x 155 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 240 mm |
| Outer diameter D | 500 mm |
| Width B | 155 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | none |
| Basic dynamic load rating C | 3140 kN |
| Basic static load rating C0 | 4400 kN |
| Fatigue load limit Pu | 390 kN |
| Reference speed (thermal) | 480 rpm |
| Limiting speed (mechanical) | 600 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 147000 g |
| Manufacturer designation | SKF NJG 2348 VH |
| Standard | ISO 15 |
| Catalog version | SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 6.3 single-row full complement cylindrical roller bearings |
| Last verified | 2026-09-26 |
Source: catalog reference (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 6.3 single-row full complement cylindrical roller bearings) · extracted 2026-09-26
Parameters extracted from the official SKF Rolling Bearings catalogue (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 6.3 single-row full complement cylindrical roller bearings); SKF® and SKF Explorer® are trademarks of AB SKF, used here for identification only — mpnbase is not an authorized SKF distributor. Boundary dimensions are ISO 15 interchangeable; current production values may differ, verify at skf.com.
Dimensions in inches & NJG2300-series range
| Bore d | 9.449 in |
|---|---|
| Outer diameter D | 19.685 in |
| Width B | 6.102 in |
| ISO bore code | 48 |
| Radial section height (D−d)/2 | 130 mm |
| Smallest bore in NJG2300-series | 25 mm |
| Largest outer diameter in NJG2300-series | 540 mm |
| Width range across NJG2300-series | 24–165 mm |
| Bore position in NJG2300-series (smallest first) | 24 of 25 |
| Bore above smallest NJG2300-series size | 215 mm |
Cross references & equivalents
No verified interchange data yet. Send an inquiry and our team will confirm equivalents manually.
How the NJG2348-VH model number is decoded
Ordering number SKF NJG 2348 VH resolves to a 240×500×155 mm single-row full-complement cylindrical roller bearing (dimension series 23 (medium-section, wide)); a single-row full complement bearing with two integral flanges on the outer ring and one on the inner ring; the roller set is self-retaining and the outer ring can be lifted off without rollers spilling. Reading the NJG prefix: a single-row full complement bearing with two integral flanges on the outer ring and one on the inner ring; the roller set is self-retaining and the outer ring can be lifted off without rollers spilling. This makes the execution one-direction locating: it positions the shaft axially in one direction and accommodates axial displacement in the opposite direction. Reading the order-string suffix VH: the full-complement execution — extra rollers replace the cage, trading speed for maximum radial capacity and stiffness. With C 3140 kN and C0 4400 kN, size the bearing on the 240×500 mm ISO 15 envelope and check the 390 kN Pu against the equivalent-load floor; the catalogue lists 480 r/min thermal reference speed and 600 r/min mechanical limiting speed. Mounting: low-speed duty only: the uncaged rollers smear when skidding, so keep minimum radial load high, accelerate gently and favour oil bath or grease with high base-oil viscosity. A 240 mm seat normally takes a m6 interference with an H6 housing bore when the inner ring rotates.
Typical equipment & failure modes
Common applications
- large rolling-mill and continuous-caster drives
- mining crusher eccentric shafts
- heavy offshore winch drums
Known failure patterns
- inner-ring raceway spalling from overload or contamination in the line-contact hertz zone
- outer-ring raceway fatigue after extended service at loads above the catalogue L10 rating
- roller smearing (microwelding) in the full complement during skidding at light load or rapid acceleration
- cage pocket wear from roller skidding at insufficient radial load or during start-up before oil film build-up
- roller-end scoring from inadequate oil flow in the roller-raceway contact
- edge loading and roller-end scoring when the minimum radial load is not maintained at standstill
- edge loading from shaft deflection beyond the bearing alignment limit (≈ 3-4 minutes of arc for single-row CRB)
Selection pitfalls — read before you substitute
- Full-complement bearings trade speed for capacity: the 600 r/min ceiling is far below a caged bearing of the same envelope, and running faster smears the uncaged rollers.
- Keep minimum radial load high (typically ≥0,02 C) for a full-complement unit; at light load the rollers skid and microweld within the first service interval.
- Shaft and housing fillets must clear the bearing chamfers; an oversized radius tilts the 155 mm-wide ring and concentrates load.
- Catalogue reference and limiting speeds are different criteria: observe the mechanical ceiling even when thermal calculations allow more.
- The 3140/4400 kN ratings are SKF catalogue 17000 (2018) values for the VH execution; re-verify against the current catalogue for critical drives and keep the catalogue version with the specification.
Frequently asked questions
What are the dimensions and catalogue data of NJG2348-VH?
SKF NJG 2348 VH is a single-row full-complement cylindrical roller bearing with 240 mm bore, 500 mm OD and 155 mm width per ISO 15. SKF lists C 3140 kN, C0 4400 kN, Pu 390 kN, reference speed 480 r/min and limiting speed 600 r/min, mass about 147000 g.
What does the NJG designation and VH suffix mean?
Suffix VH identifies the full-complement execution: the space a cage would occupy is filled with extra rollers, trading speed for maximum radial capacity and stiffness. Structurally this execution has a single-row full complement bearing with two integral flanges on the outer ring and one on the inner ring; the roller set is self-retaining and the outer ring can be lifted off without rollers spilling.
Can NJG2348-VH take axial load and locate the shaft?
In one direction; the opposite direction accommodates displacement. It is a low-speed full-complement bearing, not a high-speed thrust solution.
How does NJG2348-VH compare with the other executions in the same envelope?
The full-complement NCF/NJG bearings replace the cage with extra rollers for higher radial capacity and stiffness at a substantially lower speed than caged bearings.
What limits the service life of this bearing most often?
On full-complement bearings the dominant risks are roller smearing from skidding below minimum load and contamination; maintain minimum radial load, keep lubricant film thick and accelerate gently.
Reviewed & verified by the MPN Base engineering desk against source catalog SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 6.3 single-row full complement cylindrical roller bearings on 2026-09-26. Read our editorial & correction policy.