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30311 Tapered Roller Bearing Specifications
| Designation | 30311 |
|---|---|
| Bearing type | Tapered Roller Bearing |
| Series | 30300 |
| Bore diameter (d) | 55 mm |
| Outer diameter (D) | 120 mm |
| Width (B) | 31.5 mm |
| Boundary dimensions | ISO 15 (metric) |
| Load rating (Cr / C0r) | Quoted on request |
| FOB price (USD) | 3.53 - 3.64 per piece · MOQ 10 · lead time 1-2 days |
Dimensionally interchangeable with SKF 30311, NSK 30311, FAG 30311 and NTN 30311. Brand names are used for cross-reference only; Ultrabearing is an independent manufacturer and is not affiliated with these brands.
30311 Tapered Roller Bearing
30311 is a single row tapered roller bearing with a 55 mm bore, 120 mm outer diameter and 31.5 mm width, built to the ISO 15 boundary dimensions of the 30300 series. It is size 8 of 12 in the series. It carries combined radial and axial load in one direction and is normally mounted opposed by a second bearing.
Because the boundary dimensions are fixed by ISO 15, the 30311 is interchangeable with SKF 30311, NSK 30311, FAG 30311 and NTN 30311: it fits the same 55 mm shaft and the same housing bore. Cage material, internal clearance, precision grade and sealing differ between makers and should be confirmed against the application before substitution.
Why Source 30311 from Ultrabearing?
- Combined radial and axial load support
- Strong wheel-end performance
- Reliable adjustment capability
- Export-oriented quotation support for small batch samples and bulk purchasing
- Model confirmation support for equivalent replacement and cross-reference inquiries
- Neutral packaging, OEM packaging and consolidated shipment options can be discussed
Typical Applications
30311 Tapered Roller Bearing can be used in applications such as the following when the technical requirements match the bearing design:
- Automotive Axles
- Trailers
- Gear Reducers
- Agricultural Machinery
- Construction Machinery
- Wheel-End Assemblies
RFQ Information Needed
For a faster and more accurate quotation, please include the bearing model, quantity, preferred brand or quality level, application, destination country and packaging requirements. If you are replacing an old bearing, photos of the bearing marks and equipment position are helpful.
Other sizes in the 30300 series
- 30308 — 40 mm bore, 90 mm outer diameter, 25.25 mm width
- 30309 — 45 mm bore, 100 mm outer diameter, 27.25 mm width
- 30310 — 50 mm bore, 110 mm outer diameter, 29.25 mm width
- 30312 — 60 mm bore, 130 mm outer diameter, 33.5 mm width
- 30313 — 65 mm bore, 140 mm outer diameter, 36 mm width
- 30314 — 70 mm bore, 150 mm outer diameter, 38 mm width
Related Bearing Sourcing Links
FAQ
What is 30311 Tapered Roller Bearing used for?
30311 Tapered Roller Bearing is commonly requested for automotive axles, trailers, gear reducers, agricultural machinery. Final suitability should be confirmed by load, speed, clearance, sealing and installation requirements.
Can Ultrabearing supply 30311 as an equivalent replacement?
Yes. Ultrabearing can help source 30311 Tapered Roller Bearing options or equivalent replacement bearings according to your brand preference, quantity, application and destination country.
How do I get a quote for 30311 bearing?
Please send the model number, required quantity, application, target brand or equivalent level, destination country and any packaging requirements. Photos or drawings help speed up confirmation.
Do you provide OEM or neutral packaging?
OEM packaging and neutral export packaging can be discussed based on order quantity, product type and buyer requirements.
Need a fast quote? Contact Ultrabearing with your model list and required quantity. Our team will help confirm availability and equivalent options.
