239-560 bearing: complete specifications & equivalents
The 239-560 is a ISO 15 radial bearing sized 560 x 750 x 140 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | NTN |
| Bore diameter d | 560 mm |
| Outer diameter D | 750 mm |
| Width B | 140 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel |
| Basic dynamic load rating C | 3200 kN |
| Basic static load rating C0 | 6900 kN |
| Fatigue load limit Pu | 525 kN |
| Limiting speed (mechanical) | 380 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 182000 g |
| Manufacturer designation | NTN 239/560 |
| Standard | ISO 15 |
| Catalog version | NTN Ball and Roller Bearings CAT.No.2203E |
| Last verified | 2026-10-01 |
Source: catalog reference (NTN Ball and Roller Bearings CAT.No.2203E) · extracted 2026-10-01
Parameters extracted from the official NTN Ball and Roller Bearings catalogue (NTN Ball and Roller Bearings CAT.No.2203E); NTN® is a trademark of NTN Corporation, used here for identification only — mpnbase is not an authorized NTN distributor. Boundary dimensions are ISO 15 interchangeable; current production values may differ, verify at ntnglobal.com.
Dimensions in inches & 23900-series range
| Bore d | 22.047 in |
|---|---|
| Outer diameter D | 29.528 in |
| Width B | 5.512 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 95 mm |
| Smallest bore in 23900-series | 160 mm |
| Largest outer diameter in 23900-series | 1820 mm |
| Width range across 23900-series | 45–315 mm |
| Bore position in 23900-series (smallest first) | 22 of 38 |
| Bore above smallest 23900-series size | 400 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 239-560K | NTN | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same NTN 23900-series envelope, cage and ratings; this is the cylindrical-bore execution of the tapered-bore 239-560K (K/K30 sleeve or tapered-seat mounting). Verify shaft arrangement. |
Interchange levels: full standard interchange · partial verify parameters · verify manual confirmation required. Links resolve to the equivalent model's specification page where available.
How the 239-560 model number is decoded
The NTN order number 239/560 identifies a 560×750×140 mm (22.047 × 29.528 × 5.512 in) spherical roller bearing, cylindrical bore, to the ISO 15 boundary plan. Digit by digit the code reads as spherical-roller dimension series plus 560 mm bore; the 140 mm width is the wide ISO 15 section, which is why spherical rollers interchange dimensionally but not in cage or rating detail. NTN prints two speeds for 239/560: 380 r/min grease and 490 r/min oil — the gap of 110 r/min reflects oil cooling of the heavy roller set. 560 mm bore is 22.047 in and 750 mm OD is 29.528 in; the ISO 15 envelope swaps between brands, but the 3200/6900 kN ratings and cage design are NTN 2203E values. Supply grease through the outer-ring feature during commissioning and at the calculated interval, rotating the 560 mm bore assembly by hand to distribute it across both rows.
Typical equipment & failure modes
Common applications
- large wind-turbine main-shaft arrangements
- steel-mill and heavy crusher main shafts
- mining shovel and dragline swing shafts
- cement-rotary-kiln support and trunnion rolls
Known failure patterns
- lubricant starvation at the centre rib area when the D1/W33 groove is not connected to a relubrication supply
- pressed EA cage fatigue under sustained vibration when minimum load is not maintained
- sliding wear and heat when relubrication intervals ignore the groove (D1/W33) supply path
- fretting corrosion between adapter sleeve and tapered bore when the drive-up is insufficient
- hard-particle indentation through the open arrangement in dusty mining duty
Selection pitfalls — read before you substitute
- At 560 mm bore 239/560 is normally mounted on adapter/withdrawal sleeves with hydraulic assistance; follow the NTN drive-up angle or oil-injection procedure — manual nut tightening cannot set the multi-tonne seating correctly.
- Self-aligning does not mean unlimited misalignment: beyond the catalogue angle the outer ring's spherical travel is exhausted and the 3200 kN rating no longer applies.
- Minimum load must be maintained even at rest under vibration: an unloaded 239/560 on a stopped screen false-brinells; parking brakes and shaker isolation both matter.
- K and K30 are different tapers — K is 1:12 and K30 is 1:30 on the wide series; an adapter sleeve for one will not mount the other 560 mm bearing, and drive-up procedures differ.
- Oil relubrication toward 490 r/min needs drain and level design; flooding the 140 mm cavity churns heat through the heavy roller set and cage despite the higher oil speed figure.
- The 3200/6900 kN ratings, 525 kN Pu and 182000 g mass are NTN Ball and Roller Bearings CAT.No.2203E values for 239/560 (basic); another maker's same-envelope part revises internal geometry, so re-verify ratings and cage before substitution on vibrating or rated drives.
Frequently asked questions
What are the dimensions and catalogue data of 239/560?
239/560 is an NTN double-row spherical roller bearing to ISO 15: 560 mm bore, 750 mm OD and 140 mm width (22.047 × 29.528 × 5.512 in). From NTN Ball and Roller Bearings CAT.No.2203E: C 3200 kN, C0 6900 kN, Pu 525 kN, grease limiting speed 380 r/min, oil 490 r/min, mass about 182000 g. It is open, with pressed-steel cage (standard execution).
What is the difference between the K/K30 tapered bore and the cylindrical bore versions?
239/560 has a cylindrical bore and mounts directly on a machined shaft seat. Its tapered-bore counterpart is 239/560K (K = 1:12, or K30 = 1:30 on the wide series), intended for adapter/withdrawal-sleeve mounting.
What do EA and EM mean on NTN spherical roller bearings?
EA is the NTN standard-capacity/high-capacity execution with a pressed sheet-steel window cage; EM is the high-capacity execution with a one-piece machined brass cage. Both use the optimised symmetric-roller design, but cage identity changes mass, speed behaviour and suitability for duties like vibrating screens, so they are separate order numbers. 239/560 is the basic execution.
What do D1 and W33 mean on 239/560?
239/560 is listed without a D1/W33 outer-ring groove in 2203E; lubrication is supplied from the ring sides. D1 (NTN spelling) and W33 add the annular groove plus holes and are ordered as distinct suffixed executions of the same envelope.
How much misalignment and axial load can 239/560 take?
The sphered outer raceway compensates static and dynamic misalignment in the order of 1–2° (verify the exact 2203E figure for the 23900 series); beyond that, load concentrates on one roller row. Load is predominantly radial with a moderate axial share in either direction — 3200 kN C / 6900 kN C0 — but sustained pure axial load is not recommended because it unloads one row.
Reviewed & verified by the MPN Base engineering desk against source catalog NTN Ball and Roller Bearings CAT.No.2203E on 2026-10-01. Read our editorial & correction policy.