
Bearings
NU311
Cylindrical Roller Bearing
Interchanges with
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Specifications
| Part number | NU311 |
|---|---|
| Manufacturer | KOYO |
| Category | Bearings |
| Bearing type | Cylindrical Roller Bearing |
| Bore | 55 mm |
| Outside Diameter | 120 mm |
| Width | 29 mm |
| Availability | Contact us for current availability |
Cross-reference / Interchangeable part numbers
●Possible / base series match
Same basic bearing series, but seals, clearance, cage or snap-ring configuration may differ.
Before ordering: Suffixes may indicate differences in seals, shields, internal clearance, snap rings, cages, lubrication, or other specifications. Confirm interchangeability before ordering.
Typical applications
The NU311 cylindrical roller bearing is commonly specified by maintenance, OEM, and MRO buyers across Houston and the Gulf Coast for the following kinds of equipment:
- Electric motors and generators
- Machine tool spindles
- Industrial gearboxes
- Pumps and compressors
Confirm fit against your equipment drawing or OEM bill of materials — our team will cross-reference the exact suffix (closure, clearance, cage, lubrication) before we ship.
Why buy from TSB Industrial Supply?
- Houston inventory
- Nationwide shipping
- Fast RFQ response
- 20+ years in industrial supply
- Major bearing & PT brands
Other configurations
Same NU311 base number — seals, shields and clearance differ by suffix.
SKF
NU311 ECJ/C3
Bearing / Industrial Part
SKF
NU311ECPC3
Bearing / Industrial Part
FAG
NU311EM1C3
Bearing / Industrial Part
NSK
NU311MC3
Bearing / Industrial Part
NACHI
NU311 ETN
Bearing / Industrial Part
FAG
NU311ETVP2C3
Bearing / Industrial Part
NSK
NU311 EW
Bearing / Industrial Part
NSK
NU311EWC3
Bearing / Industrial Part
Same dimensions
Same bore, outside diameter and width. Confirm load rating and configuration before substituting.
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