| Bearing number | 312 NR |
| Size (mm) | 130x60x31 |
| Bore Diameter (mm) | 130 |
| Outer Diameter (mm) | 60 |
| Width (mm) | 31 |
| d | 60 mm |
| D | 130 mm |
| B | 31 mm |
| d1 | 81.86 mm |
| D2 | 112.2 mm |
| D3 | 125.22 mm |
| D4 | 139.7 mm |
| b | 3.1 mm |
| C | 4.06 mm |
| f | 2.82 mm |
| r0 | 0.6 mm |
| r1,2 - min. | 2.1 mm |
| da - min. | 72 mm |
| Da - max. | 118 mm |
| Db - min. | 141 mm |
| ba - min. | 3.5 mm |
| Ca - max. | 6.88 mm |
| ra - max. | 2 mm |
| Basic dynamic load rating - C | 91.3 kN |
| Basic static load rating - C0 | 78 kN |
| Fatigue load limit - Pu | 3.4 kN |
| Reference speed | 9500 r/min |
| Limiting speed | 6000 r/min |
| Calculation factor minimum radial load - kr | 0.05 |
| Mass bearing | 1.85 kg |
| Category | Single Row Ball Bearing |
| Inventory | 0.0 |
| Minimum Buy Quantity | N/A |
| Weight / Kilogram | 1.9 |
| Product Group | B00308 |
| Enclosure | Open |
| Precision Class | ABEC 1 | ISO P0 |
| Maximum Capacity / Filling Slot | Yes |
| Rolling Element | Ball Bearing |
| Snap Ring | Yes |
| Internal Special Features | No |
| Cage Material | Steel |
| Internal Clearance | C0-Medium |
| Inch - Metric | Metric |
| Long Description | 60MM Bore; 130MM Outside Diameter; 31MM Outer Race Diameter; Open; Ball Bearing; ABEC 1 | ISO P0; Yes Filling Slot; Yes Snap Ring; No Internal Special Features |
| UNSPSC | 31171504 |
| Harmonized Tariff Code | 8482.10.50.68 |
| Noun | Bearing |
| Keyword String | Ball |
| Manufacturer Item Number | 312 NR |
| Weight / LBS | 4.19 |
| Outer Race Width | 1.22 Inch | 31 Millimeter |
| Outside Diameter | 5.118 Inch | 130 Millimeter |
| Bore | 2.362 Inch | 60 Millimeter |
| bore diameter: | 60 mm |
| static load capacity: | 78 kN |
| outside diameter: | 130 mm |
| precision rating: | ABEC 1 (ISO Class Normal) |
| overall width: | 31 mm |
| finish/coating: | Uncoated |
| bore type: | Round |
| cage material: | Steel |
| closure type: | Open |
| outer ring width: | 31 mm |
| row type & fill slot: | Single Row Filling Slot |
| fillet radius: | 2 mm |
| snap ring included: | With Snap Ring |
| maximum rpm: | 6000 RPM |
| internal clearance: | C0 |
| series: | 31 |
| dynamic load capacity: | 91.3 kN |
| thrust application warning: | This product can not be used in Thrust Applications |
| d1 ≈ | 81.86 mm |
| D2 ≈ | 112.2 mm |
| r0 max. | 0.6 mm |
| r1,2 min. | 2.1 mm |
| da min. | 72 mm |
| Da max. | 118 mm |
| Db min. | 141 mm |
| ba min. | 3.5 mm |
| Ca max. | 6.88 mm |
| ra max. | 2 mm |
| Basic dynamic load rating C | 91.3 kN |
| Basic static load rating C0 | 78 kN |
| Fatigue load limit Pu | 3.35 kN |
| Calculation factor kr | 0.05 |
| Snap ring | SP 130 |
