33021
Tier-one manufacturer — brand supplied may vary ✓ Dimensions confirmed by two independent sourcesCouldn't load pickup availability
Image is for illustration purposes only.
What 33021 means
| Code | Position | Meaning |
|---|---|---|
3 |
Type | Tapered roller bearing (metric) |
3 |
Width series | Width series 3 |
0 |
Diameter series | Diameter series 0 (extra light) |
21 |
Bore | Bore code 21 × 5 = 105 mm |
Read from the ISO / ABMA numbering rules and the makers' published suffix conventions. Decode any other number with the bearing number decoder.
33021 specifications
| Specification | Metric | Inch | Basis |
|---|---|---|---|
| Bore (d) | 105 mm | 4.1339 in | ISO table for this designation, confirmed by supplier data |
| Outside diameter (D) | 160 mm | 6.2992 in | Two independent catalogue sources agree |
| Width, assembled (T) | 43 mm | 1.6929 in | Two independent catalogue sources agree |
| Bearing type | Tapered roller bearing (metric, ISO 355) | Stated by the designation | |
| Seals / shields | Open (no seals or shields) | Stated by the designation | |
| Tolerance class | Normal (ISO P0 / ABEC 1): no tolerance-class code | Stated by the designation | |
| Material | Through hardened steel | Supplier catalogue listing | |
| Dynamic load rating, C | 244.65 kN | 55,000 lbf |
|---|---|---|
| Static load rating, C0 | 420.36 kN | 94,501 lbf |
| Limiting speed, grease | 2,100 rpm | |
| Limiting speed, oil | 2,800 rpm | |
Equivalent to / interchanges with
| Brand | Part number | Basis |
|---|---|---|
| TIMKEN | 33021M we stock this | Timken Interchange Guide |
Equivalents are dimensional and closure-for-closure: same bore, outside diameter, width, seals or shields and internal clearance. Bearing interchange tables
33021 is a tapered roller bearing (metric, ISO 355), 105 mm bore × 160 mm OD × 43 mm wide (4.1339 × 6.2992 × 1.6929 in). Published interchange tables list it as equivalent to TIMKEN 33021M. NTN catalogue values for 33021: dynamic load rating C = 244.65 kN, static C0 = 420.36 kN, limiting speed 2,100 rpm on grease, 2,800 rpm on oil.
The 33021 is a metric tapered roller bearing conforming to ISO 355 standards, featuring a 105mm bore diameter. Tapered roller bearings use conical rollers arranged between inner and outer ring raceways to handle combined radial and axial loads efficiently.
