TR250M-3 Slewing Bearings For Cranes
| Bearing number: |
6980 |
| Size (mm): |
400x540x65 |
| Bore Diameter (mm): |
400 |
| Outer Diameter (mm): |
540 |
| Width (mm): |
65 |
| d: |
400 mm |
| D: |
540 mm |
| B: |
65 mm |
| PDF |
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Product Details
| Bearing number |
6980 |
| Size (mm) |
400x540x65 |
| Bore Diameter (mm) |
400 |
| Outer Diameter (mm) |
540 |
| Width (mm) |
65 |
| d |
400 mm |
| D |
540 mm |
| B |
65 mm |
| C |
65 mm |
| r min. |
4 mm |
| Da max. |
524 mm |
| db min |
416 mm |
| ra max. |
3 mm |
| Weight |
41,6 Kg |
| Basic dynamic load rating (C) |
335 kN |
| Basic static load rating (C0) |
535 kN |
| (Grease) Lubrication Speed |
990 r/min |
| (Oil) Lubrication Speed |
1 200 r/min |
| d1 |
445.2 mm |
| D1 |
494.8 mm |
| rs min |
4 mm |
| Radial clearance class |
CN |
| Mass |
42.1 kg |
| Dynamic load, C |
335 kN |
| Static load, C0 |
535 kN |
| Fatigue limit load, Cu |
0 kN |
| f0 |
16.5 |
| Nlim (oil) |
1,200 rpm |
| Nlim (grease) |
990 rpm |
| Min operating temperature, Tmin |
-20 °C |
| Max operating temperature, Tmax |
120 °C |
| Characteristic cage frequency, FTF |
0.46 Hz |
| Characteristic rolling element frequency, BSF |
11.3 Hz |
| Characteristic outer ring frequency, BPF0 |
8.67 Hz |
| Characteristic inner ring frequency, BPFI |
10.33 Hz |
| da min |
416 mm |
| da max |
445 mm |
| Da max |
524 mm |
| ra max |
3 mm |