Manual rock and tobacco digging machine with better performance
Request A Quote For Your Special Manual rock and tobacco digging machine with better performance Jinan Excavator Parts Company Needs Today! Free excavator pump 250x140x42 250x140x42 Size (mm) Quotes. ISO 9001 certified.
| Min.Order Quantity |
1 pcs |
| Price |
Negotiable |
Product Details
| Bearing number |
7228 ACD/P4A |
| Size (mm) |
250x140x42 |
| Bore Diameter (mm) |
250 |
| Outer Diameter (mm) |
140 |
| Width (mm) |
42 |
| d |
140 mm |
| D |
250 mm |
| B |
42 mm |
| d1 |
176.8 mm |
| d2 |
176.8 mm |
| D1 |
213.2 mm |
| r1,2 - min. |
3 mm |
| r3,4 - min. |
1.5 mm |
| a |
66.7 mm |
| da - min. |
154 mm |
| db - min. |
154 mm |
| Da - max. |
236 mm |
| Db - max. |
241 mm |
| ra - max. |
2.5 mm |
| rb - max. |
1.5 mm |
| dn |
184.8 mm |
| Basic dynamic load rating - C |
212 kN |
| Basic static load rating - C0 |
228 kN |
| Fatigue load limit - Pu |
7 kN |
| Limiting speed for grease lubrication |
5000 r/min |
| Limiting speed for oil lubrication |
7500 mm/min |
| Ball - Dw |
30.162 mm |
| Ball - z |
18 |
| Gref |
83.931 cm3 |
| Calculation factor - e |
0.68 |
| Calculation factor - Y2 |
1.41 |
| Calculation factor - Y0 |
0.76 |
| Calculation factor - X2 |
0.67 |
| Calculation factor - Y1 |
0.92 |
| Preload class A - GA |
1350 N |
| Preload class B - GB |
2700 N |
| Preload class C - GC |
5400 N |
| Preload class D - GD |
10800 N |
| Calculation factor - f |
1.09 |
| Calculation factor - f1 |
0.99 |
| Calculation factor - f2A |
1 |
| Calculation factor - f2B |
1.01 |
| Calculation factor - f2C |
1.02 |
| Calculation factor - f2D |
1.05 |
| Calculation factor - fHC |
1 |
| Preload class A |
397 N/micron |
| Preload class B |
516 N/micron |
| Preload class C |
679 N/micron |
| Preload class D |
911 N/micron |
| r1,2 min. |
3 mm |
| r3,4 min. |
1.5 mm |
| da min. |
154 mm |
| db min. |
154 mm |
| Da max. |
236 mm |
| Db max. |
241 mm |
| ra max. |
2.5 mm |
| rb max. |
1.5 mm |
| Basic dynamic load rating C |
212 kN |
| Basic static load rating C0 |
228 kN |
| Fatigue load limit Pu |
6.95 kN |
| Attainable speed for grease lubrication |
5000 r/min |
| Attainable speed for oil-air lubrication |
7500 r/min |
| Ball diameter Dw |
30.162 mm |
| Number of balls z |
18 |
| Reference grease quantity Gref |
83.931 cm³ |
| Preload class A GA |
1350 N |
| Static axial stiffness, preload class A |
397 N/µm |
| Preload class B GB |
2700 N |
| Static axial stiffness, preload class B |
516 N/µm |
| Preload class C GC |
5400 N |
| Static axial stiffness, preload class C |
679 N/µm |
| Preload class D GD |
10800 N |
| Static axial stiffness, preload class D |
911 N/µm |
| Calculation factor f |
1.09 |
| Calculation factor f1 |
0.99 |
| Calculation factor f2A |
1 |
| Calculation factor f2B |
1.01 |
| Calculation factor f2C |
1.02 |
| Calculation factor f2D |
1.05 |
| Calculation factor fHC |
1 |
| Calculation factor e |
0.68 |
| Calculation factor (single, tandem) Y2 |
0.87 |
| Calculation factor (single, tandem) Y0 |
0.38 |
| Calculation factor (single, tandem) X2 |
0.41 |
| Calculation factor (back-to-back, face-to-face) Y1 |
0.92 |
| Calculation factor (back-to-back, face-to-face) Y2 |
1.41 |
| Calculation factor (back-to-back, face-to-face) Y0 |
0.76 |
| Calculation factor (back-to-back, face-to-face) X2 |
0.67 |
| Mass bearing |
8.14 kg |
Company Profile
| Worktime |
9:00-18:00(Beijing time) |
| Phone |
86 0531-8299 9952 |
| Fax |
86 0531 -82990353 |