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Deep Groove Ball Bearings: The Industry Default and When to Reach for Something Else
If you pulled a bearing off general industrial equipment at random, there’s a good chance
Availability:
1 in stock
Deep groove ball bearing 6311, 55 mm bore, 120 mm OD, 29 mm width, open with C3 clearance. Two Nachi 6311-C3 pieces, made in Japan, new surplus in open box.
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| MFR / Brand | Nachi |
|---|---|
| MPN | 6311C3 |
| Model | 6311-C3 |
| Bearing Type | Ball Bearing, Open |
| ID | 55 mm |
| OD | 120 mm |
| Width | 29 mm |
| Series | 6300 |
|---|---|
| Material | Chrome Steel |
| Rolling Elements | Ball |
| Number Of Rows | 1 |
| Bore Type | Straight |
| Snap Ring Included | No |
| Harmonization Code | 84821000 |
| Internal Clearance | C3 |
| Mpn Variants | 6311-C3, 6311C3, 6311 C3, 6311/C3, 6311 |
| Industry Terms | deep groove ball bearing; single row radial ball bearing; open ball bearing; 6311 C3 bearing; 55x120x29 bearing |
| Common Misspellings | Nachi 6311 C-3; Nachy 6311-C3; Natchi 6311C3; NACHI 6311C |
| Application Types | Electric motors; pumps; gearboxes; general industrial machinery |
| Cross Reference 1 | SKF 6311/C3 |
|---|---|
| Cross Reference 2 | FAG 6311-C3 |
| Cross Reference 3 | NSK 6311C3 |
| Cross Reference 4 | NTN 6311C3 |
| Cross Reference 5 | Koyo 6311C3 |
Nachi 6311-C3 is a single-row deep groove ball bearing in the ISO 6311 size, open on both sides, with C3 radial internal clearance. Unit Quantity: 2 Pcs. One piece is C3 and one piece is old stock with wear on the races; both spin freely.
6311 — ISO deep groove ball bearing, 03 medium series, bore code 11, 55 x 120 x 29 mm.
C3 — radial internal clearance greater than normal, for applications with heavier interference fits or higher running temperature.
Bore Diameter: 55 mm. Outside Diameter: 120 mm. Overall Width: 29 mm. Closure Type: Open. Internal Clearance: C3. Rolling Elements: Ball. Number Of Rows: 1. Bore Type: Straight. Series: 6300. Unit Quantity: 2 Pcs.
Straight bore on a 55 mm shaft seat, 120 mm housing bore, 29 mm ring width.
Cross-references: SKF 6311/C3, FAG 6311-C3, NSK 6311C3, NTN 6311C3, Koyo 6311C3. MPN variants: 6311-C3, 6311C3, 6311 C3, 6311/C3.
55 mm bore, 120 mm outside diameter, 29 mm width.
Radial internal clearance greater than normal.
Two pieces.
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