30311 Tapered Roller Bearing
Applied in automotive transmissions, heavy trucks, and industrial gearboxes where durability under combined loads is essential.
Specifications
| Designation | 30311 |
|---|---|
| Type | Tapered Roller Bearing |
| Bore diameter (d) | 55 mm |
| Outside diameter (D) | 120 mm |
| Width (T) | 31.5 mm |
| Precision class | P0 / P6 |
| Certification | ISO 9001:2015 · ISO 10002:2018 |
| Country of origin | Made in India |
| Availability | In stock |
Industries served
*T&C apply. Discount depends on quantity.
About the 30311 tapered roller bearing
The 30311 is a tapered roller bearing with a 55 mm bore, 120 mm outside diameter and 31.5 mm width. It is made at our plant near Rajkot, Gujarat, from forged steel rings through heat treatment, grinding, assembly and final inspection, to P0 (normal) or P6 precision under ISO 9001:2015.
The designation 30311 follows standard ISO boundary dimensions, so a GBI 30311 fits the same housing and shaft as a 30311 from SKF, FAG, NSK, NTN, Timken or any other brand. Check seal, cage and clearance requirements with our team before replacing a branded part.
We supply the 30311 to OEMs, distributors and maintenance buyers across India, with delivery to every state, and export it worldwide. See export terms or ask for a bulk quote.