Timken B-77 needle roller bearings
| Brand Name: | Timken |
| Model Number: | B-77 |
| Bearing number: | 6909ZENR |
| Size (mm): | 45x68x12 |
| Bore Diameter (mm): | 45 |
| Outer Diameter (mm): | 68 |
| Width (mm): | 12 |
| d: | 45 mm |
| D: | 68 mm |
| B: | 12 mm |
| PDF |
B-77 |
Product Details
| Bearing number | 6909ZENR |
| Size (mm) | 45x68x12 |
| Bore Diameter (mm) | 45 |
| Outer Diameter (mm) | 68 |
| Width (mm) | 12 |
| d | 45 mm |
| D | 68 mm |
| B | 12 mm |
| C | 12 mm |
| a | 1.7 mm |
| b | 0.95 mm |
| f | 0.85 mm |
| r min. | 0.6 mm |
| r1 min. | 0.5 mm |
| D1 | 66.7 mm |
| D2 | 70.8 mm |
| Weight | 0.124 Kg |
| Basic dynamic load rating (C) | 14,1 kN |
| Basic static load rating (C0) | 10,9 kN |
| (Grease) Lubrication Speed | 10000 r/min |
| Enclosure | Single Shield with Snap Ring |
| Bore Type | Cylindrical Bore |
| Configuration | Single Row |
| Bore Size | 45 mm |
| Outside Diameter | 68 mm |
| Width | 12 mm |
| Fillet Radius/Chamfer | 0.6 mm |
| r1 | 0.5 mm |
| Snap Ring Width | 0.9 mm |
| Snap Ring Outside Diameter | 70.8 mm |
| D1 (max) | 66.7 mm |
| a (max) | 1.7 mm |
| b (min) | 1 mm |
| Dynamic Load Rating | 14,100 N |
| Static Load Rating | 10,900 N |
| Limiting Speed - Grease | 10,000 rpm |
| Limiting Speed - Oil | 12,000 rpm |
| Factor fo | 16.1 |
| Radial Clearance | 0.006 to 0.023 mm |
| da (min) | 49 mm |
| Da (max) | 64 mm |
| Dx (min) | 72 mm |
| ra (max) | 0.6 mm |
| Cy (max) | 2.3 mm |
