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ZKLDF120 120*210*40mm ZKLDF Series Rotary Table Bearings
ZKLDF120 120*210*40mm ZKLDF Series Rotary Table Bearings
ZKLDF120
| d | 120 mm | Sizes d > 460 mm available by agreement |
| D | 210 mm | |
| H | 40 mm | |
| 22 | Number of fixing holes in inner ring Attention! For fixing holes in the adjacent construction. Note the pitch of the bearing holes. | |
| 2 | Number of retaining screws | |
| 21 | Number of fixing holes in outer ring Attention! For fixing holes in the adjacent construction. Note the pitch of the bearing holes. | |
| 3 | Number of extraction threads | |
| a | 6,2 mm | Fixing holes in inner ring |
| D1 | 185 mm | |
| D2 | 159 mm | |
| D3 | 181 mm | |
| d1 | 7 mm | Fixing holes in inner ring |
| d2 | 11 mm | Fixing holes in inner ring |
| d3 | 7 mm | Fixing holes in outer ring |
| G | M8 | Extraction thread |
| H1 | 26 mm | |
| J | 135 mm | Fixing holes in inner ring |
| J1 | 195 mm | Fixing holes in outer ring |
| t | 24 x 15° | Pitch t Including retaining screws and extraction threads Quantity X t |
| m | 4,8 kg | ≈ Mass |
| MA | 14 Nm | Screw tightening torque Tightening torque for screws to DIN 912, grade 10.9. |
| Ca | 76000 N | Basic dynamic load rating, axial |
| C0a | 315000 N | Basic static load rating, axial |
| Cua | 11100 N | Fatigue limit load, axial |
| nG | 4300 1/min | Limiting speed The limiting speeds increased by a factor of two are valid for bearings of the current generation with the internal suffix -B. |
| caL | 1500 N/µm | Axial rigidity of bearing position Rigidity values taking account of the rolling element set, rigidity of the bearing rings and the screw connections. |
| crL | 400 N/µm | Radial rigidity of bearing position Rigidity values taking account of the rolling element set, rigidity of the bearing rings and the screw connections. |
| ckL | 5500 Nm/mrad | Tilting rigidity of the bearing position Rigidity values taking account of the rolling element set, rigidity of the bearing rings and the screw connections. |
| caL | 2500 N/µm | Axial rigidity of rolling element set |
| crL | 400 N/µm | Radial rigidity of rolling element set |
| ckL | 8000 Nm/mrad | Tilting rigidity of rolling element set |
Compared with general bearings, ZKLDF has its own characteristics of low friction, high rotation accuracy, high speed limit, etc. It can also withstand high axial and radial loads and has high tilt stiffness. Thanks to so many advantages and features, ZKLDF is also suitable for the field of load load and high precision. Medical equipment, high-precision turntables, and high-precision test equipment all require the use of ZKLDF.
Compared with ordinary bearings, ZKLDF series bearings must be cautious in use and operation due to the high precision of the bearings, otherwise it will directly affect its operating life. ZKLDF series bearings are filled with grease, so they can be used directly during installation. In the initial stage of use, the frictional torque of the bearing will be relatively large because of the resistance of the grease. After running for a while, the excess grease will overflow and the torque will return to normal.
The accuracy of the ZKLDF bearing also requires the precision of the shaft and the housing, and the requirements for them are also very high. In order to achieve the desired accuracy, the clearance should be as close as possible to zero in order to achieve its maximum operating efficiency.
ZKLDF also pays attention to the surrounding working environment when handling and installing. The mounting force can only be used in the bearing rings that need to be installed. It does not need to be applied to other parts of the bearing. The bearings are also stored in a clean, ventilated, non-corrosive environment.
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