55TAC120BNSKPrecision / Angular Contact
55TAC120B is a NSK precision / angular contact bearing, bore 55 mm, O.D. 120 mm, width 20 mm. Dimensions, drawing, interchanges and price.
Original catalogue drawing - NSK catalogue, page 223
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 | 55 | 2.1654 |
| D | Outside diameter | 120 | 4.7244 |
| B | Inner-ring / bearing width | 20 | 0.7874 |
Notes
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) | 55 |
|---|---|
| Bore d (in) | 2.1654 |
| Outside dia. D (mm) | 120 |
| Outside dia. D (in) | 4.7244 |
| Width B (mm) | 20 |
| Width B (in) | 0.7874 |
Source & traceability
| Brand | NSK |
|---|---|
| Source catalogue | NSK inch product catalogue |
| Catalogue page | p.227 (dimensions) / p.227 (ratings) |
Dimensions in inches and millimetres, load ratings in lbs.
Series variants (different suffix)
| Designation | Brand | Type | d | D | B/T | Dyn. rating | kg |
|---|---|---|---|---|---|---|---|
| 55TAC100B | NSK | Precision / Angular Contact | 55 | 100 | 20 | - | - |
Nearby bore sizes
| Designation | Brand | Type | d | D | B/T | Dyn. rating | kg |
|---|---|---|---|---|---|---|---|
| 5211 | NSK | Precision / Angular Contact | 55 | 100 | 33.3 | 61.5 kN | 1.01 |
| 5211AZZ | NSK | Precision / Angular Contact | 55 | 100 | 33.3 | 54.5 kN | 1.01 |
| 5300 | NSK | Precision / Angular Contact | 55 | 140 | 33 | 168 kN | 2.7 |
| 5311 | NSK | Precision / Angular Contact | 55 | 120 | 49.2 | 105 kN | 2.4 |
| 55BNC10 | NSK | Precision / Angular Contact | 55 | 90 | 18 | 4,500 lbs | 0.408 |
| 55BNC10SN24 | NSK | Precision / Angular Contact | 55 | 90 | 18 | 4,500 lbs | 0.408 |
| 55BNR10H | NSK | Precision / Angular Contact | 55 | 90 | 18 | 3,390 lbs | 0.414 |
| 55BNR10S | NSK | Precision / Angular Contact | 55 | 90 | 18 | 3,390 lbs | 0.414 |
Request a quotation for 55TAC120B
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