52338NSKThrust
52338 is a NSK thrust bearing, bore 190 mm, O.D. 320 mm, dynamic rating 550 kN, limiting speed 480 rpm. Dimensions, drawing, interchanges and price.
Original catalogue drawing - NSK E1103, page 321
Scanned from the manufacturer catalogue page listing this part number. All part numbers printed on that table share the same drawing.
Scale cross-section
Blue = inner / outer ring, yellow = rolling element. Drawn to scale from this part's own dimensions for selection reference only - not a manufacturing or assembly drawing.
Dimension table (mm / inch)
| Symbol | Dimension | mm | inch |
|---|---|---|---|
| d | Bore diameter | 190 | 7.4803 |
| D | Outside diameter | 320 | 12.5984 |
| r | Chamfer (min) | 4 | 0.1575 |
Notes
Thrust bearing ratings are axial values Ca / Coa; T is the overall height. Weights are given in kg. Load ratings are shown in both the original catalogue units and the converted value (1 N = 0.2248 lbf). Data is provided for selection reference only - confirm against the latest official catalogue before ordering.
Main dimensions
| Bore d (mm) | 190 |
|---|---|
| Outside dia. D (mm) | 320 |
Load ratings & speeds
| Basic dynamic axial rating Ca (lbs) | 123645 |
|---|---|
| Basic static axial rating Coa (lbs) | 440626 |
| Basic dynamic axial rating Ca (N) | 550000 |
| Basic static axial rating C0a (N) | 1960000 |
| Limiting speed - grease (rpm) | 480 |
| Limiting speed - oil (rpm) | 710 |
Mounting dimensions (fillets / shoulders)
| Housing fillet r max (mm) | 4 |
|---|---|
| Chamfer r1 min (mm) | 2 |
Bearing life (ISO 281 basic rating life)
| C / P | Equivalent load P (N) | L10 (106 rev) | L10h at 100 rpm |
|---|---|---|---|
| 4 | 137,500 | 102 | 16,932 |
| 6 | 91,667 | 392 | 65,416 |
| 8 | 68,750 | 1,024 | 170,667 |
| 10 | 55,000 | 2,154 | 359,072 |
| 15 | 36,667 | 8,323 | 1,387,244 |
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 550,000 N. Hours = L10 x 106 / (60n). Life-modification factors for lubrication, contamination and temperature (aISO) are not included.
Source & traceability
| Brand | NSK |
|---|---|
| Source catalogue | NSK CAT. No. E1103 (metric) |
| Catalogue page | p.321 (dimensions) |
Load ratings in newtons, weights in kg, limiting speeds for grease and oil lubrication.
Nearby bore sizes
| Designation | Brand | Type | d | D | B/T | Dyn. rating | kg |
|---|---|---|---|---|---|---|---|
| 29338 | NSK | Thrust | 190 | 320 | 78 | 1370 kN | 23 |
| 29338E | NSK | Thrust | 190 | 320 | 78 | 310,000 lbs | 22.906 |
| 29438 | NSK | Thrust | 190 | 380 | 115 | 475,000 lbs | 59.874 |
| 51138 | NSK | Thrust | 190 | 240 | 37 | 172 kN | - |
| 51238 | NSK | Thrust | 190 | 270 | 62 | 320 kN | 12.9 |
| 51338 | NSK | Thrust | 190 | 320 | 105 | 550 kN | 38.1 |
| 52238 | NSK | Thrust | 190 | 270 | None | 320 kN | 22.2 |
Request a quotation for 52338
Send us the quantity you need and we will come back with price and lead time, normally within 24 hours. Equivalent parts from other brands can be quoted at the same time.