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 |