For a 30220 bearing replacement, the 37 mm assembly width is a key identification check. The 30220 and 32220 share a 100 mm bore and 180 mm outside diameter, but their assembled widths differ by 12 mm. Matching only the shaft and housing diameters is therefore insufficient.
30220 Bearing Dimensions and Specifications
| Bearing designation | 30220 |
|---|---|
| Bearing type | Metric single-row tapered roller bearing |
| Bore diameter d | 100 mm |
| Outside diameter D | 180 mm |
| Overall assembly width T | 37 mm |
| Inner-ring width B | 34 mm |
| Outer-ring width C | 29 mm |
| Catalogue reference dynamic load rating Cr | 255 kN |
| Catalogue reference static load rating C0 | 330 kN |
| Catalogue reference mass | 3.78 kg |
Data status: The load ratings and reference mass above are transcribed from the supplied ZQM catalogue, page 110. Ratings and mass for the actual quoted configuration remain subject to factory confirmation. They are not ratings transferred from another bearing brand. Reference mass excludes packaging.
Single-Row Tapered Roller Bearing Features
The standard single-row tapered design accommodates combined radial load and axial load in one direction. The cone assembly and outer cup are separable. Loads in both axial directions require a suitable bearing arrangement; the complete design and setting must be reviewed for the application.
30220 Replacement and Selection Guide
Compare the complete bearing designation and any suffix with the equipment drawing. A 32220 tapered roller bearing is 49 mm wide, rather than 37 mm, and is not a direct dimensional substitute. The 32320 bearing also has a larger 215 mm outside diameter and a 77.5 mm assembly width.
Check the full designation, matching cone and cup, shaft and housing abutments, lubrication requirements and the specified endplay or preload. Do not infer a precision class, cage material or operating-speed limit from the basic number. For an existing machine, follow the equipment manufacturer’s drawing and setting procedure.
Questions About 30220
Can a 32220 replace a 30220 bearing?
Not as a direct dimensional replacement. Although both have a 100 mm bore and 180 mm outside diameter, the 32220 assembly is 12 mm wider. Any design change requires review of the housing, shaft location and bearing arrangement.
Does the 37 mm dimension describe the inner ring?
No. The 37 mm value is the overall assembly width T. The inner-ring width B is 34 mm and the outer-ring width C is 29 mm. Use the assembled width when checking axial space.
How do I request a 30220 bearing quotation?
Send the complete designation, quantity and delivery destination, together with any required tolerance, cage or matched arrangement. A drawing or clear photographs of the existing markings help identify special requirements. Availability, the supplied specification and delivery terms are confirmed with the quotation.
Contact ZQM Bearings as your 30220 bearing supplier to discuss the required configuration. Request a quote for 30220 or browse our metric tapered roller bearings.
Technical reference
30220 dimensions & specifications
