1314 bearing: complete specifications & equivalents
The 1314 is a ISO 15 radial bearing sized 70 x 150 x 35 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | NTN |
| Bore diameter d | 70 mm |
| Outer diameter D | 150 mm |
| Width B | 35 mm |
| Seal / shield | open |
| Basic dynamic load rating C | 75 kN |
| Basic static load rating C0 | 27.7 kN |
| Fatigue load limit Pu | 0.69 kN |
| Limiting speed (mechanical) | 4000 rpm |
| Mass | 3030 g |
| Manufacturer designation | 1314S |
| Standard | ISO 15 |
| Catalog version | CAT. No. 2203-3/E 2024 |
| Last verified | 2026-09-25 |
Source: catalog reference (CAT. No. 2203-3/E 2024) · extracted 2026-09-25
Parameters extracted from the official NTN Ball and Roller Bearings catalogue (CAT. No. 2203-3/E 2024); NTN® is a trademark of NTN Corporation, used here for identification only — mpnbase is not an authorized NTN distributor. Boundary dimensions are ISO 15 interchangeable; current production values may differ, verify at ntnglobal.com.
Dimensions in inches & 1300-series range
| Bore d | 2.756 in |
|---|---|
| Outer diameter D | 5.906 in |
| Width B | 1.378 in |
| ISO bore code | 14 |
| Radial section height (D−d)/2 | 40 mm |
| Smallest bore in 1300-series | 10 mm |
| Largest outer diameter in 1300-series | 240 mm |
| Width range across 1300-series | 11–50 mm |
| Bore position in 1300-series (smallest first) | 15 of 23 |
| Bore above smallest 1300-series size | 60 mm |
Cross references & equivalents
No verified interchange data yet. Send an inquiry and our team will confirm equivalents manually.
How the 1314 model number is decoded
In the 1300-series (ISO 15 dimension series) the leading digits 13 mark a double-row self-aligning ball bearing and the last two digits encode the bore: 1314 carries bore code 14 = 70 mm. Outside diameter 150 mm and width 35 mm follow the ISO 15 general plan. The cylindrical bore fits directly on a machined shaft seat; a tapered-bore K variant is available for adapter-sleeve mounting. Two rows of balls run on a common sphered outer raceway, allowing the inner ring to pivot and compensate for shaft deflection or housing misalignment.
Typical equipment & failure modes
Common applications
- textile and printing machine spindles
- paper mill and processing equipment shafts
- industrial electric motor shafts
- pump and compressor drive shafts
Known failure patterns
- contamination wear from dust and dirt ingress through the open arrangement
- lubricant starvation when no regreasing interval is maintained
- edge loading and stress concentration from excessive misalignment beyond the allowable angle
- raceway smearing under marginal lubrication at start-up
Selection pitfalls — read before you substitute
- Temperature rise and interference fits consume internal clearance on this 70 mm bore: a CN bearing on a tight, hot shaft can lose all residual clearance — size 1314 with C3 for those conditions.
- The 13xx medium section at 70 mm bore gains rating through a larger 150 mm OD and 35 mm width; verify the housing accepts the larger envelope before substituting for a 1214.
- The open 1314 has no lubricant retention: grease escapes and contaminants migrate straight into the 70×150×35 mm raceway, so specify a sealed arrangement for dusty or washdown duty.
- Open bearings tolerate the highest speeds in the 1300-series but need a defined regreasing interval; run-to-failure lubrication is the dominant cause of early failure in open 1314 units.
- Do not use a self-aligning ball bearing where high radial rigidity is required — the sphered outer raceway allows more radial movement than a deep-groove or cylindrical roller bearing.
Frequently asked questions
What are the dimensions of a 1314 self-aligning ball bearing?
A 1314 self-aligning ball bearing has a 70 mm bore, 150 mm outer diameter and 35 mm width, per ISO 15 boundary dimensions. This is the cylindrical-bore version; a tapered-bore K variant is available for adapter-sleeve mounting.
How does the 1314 bore code work?
The last two digits of 1314 are bore code 14, giving 14 × 5 = 70 mm bore. The 150 mm outside diameter and 35 mm width follow the ISO 15 diameter series, not the bore code alone.
What does the open suffix mean on 1314?
A bare 1314 designation means open: no shields or seals, normal CN radial clearance and P0 normal tolerance unless further suffixes are ordered. The application must supply and retain the lubrication.
How does the 1300 compare with other self-aligning series at the same 70 mm bore?
The 13xx is the medium section: 150×35 mm, 40.0 mm radial section at 70 mm bore, carrying more load than a 1214 but needing a larger housing bore.
Reviewed & verified by the MPN Base engineering desk against source catalog CAT. No. 2203-3/E 2024 on 2026-09-25. Read our editorial & correction policy.