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In the realm of precision engineering and motion control, harmonic reducer cross roller bearings stand out as key components, bringing together the principles of harmonic drive mechanisms and the advantages of cross roller bearings.
A harmonic reducer cross roller bearing, also known as a cross roller slewing bearing or a crossed roller bearing, is a type of bearing specifically designed to handle high axial and radial loads while maintaining precise rotational movement. It is commonly used in harmonic drive systems and other applications where compactness, accuracy, and load capacity are crucial.
The construction of a harmonic reducer cross roller bearing consists of two sets of crossed cylindrical rollers arranged in a V-shaped pattern. The rollers are oriented at right angles to each other and are held in position by spacers. This unique design allows for high load-carrying capacity in both radial and axial directions.
1. High Precision and Rigidity
The combination of the harmonic drive mechanism and cross roller bearings results in superior precision and rigidity. The crossed roller arrangement minimizes internal clearances, reducing deflection and enabling the transmission of precise movements. This makes harmonic reducer cross roller bearings ideal for applications where accuracy is paramount, such as robotics and precision machinery.
2. Compact Design
Harmonic reducer cross roller bearings maintain the compact design inherent in harmonic drives. The integrated design eliminates the need for additional components, making them suitable for applications with space constraints. This compactness is particularly advantageous in robotic joints and other compact machinery.
3. Efficient Torque Transmission
The harmonic drive mechanism excels at providing high reduction ratios with minimal backlash, ensuring efficient torque transmission. This makes harmonic reducer cross roller bearings suitable for applications where precise control of rotational motion is critical, such as in industrial robots and automation systems.
1. Robotics and Automation
Harmonic reducer cross roller bearings find widespread use in robotic joints and automation systems, where the combination of high precision, rigidity, and compact design is essential. These bearings contribute to the smooth and accurate motion of robotic arms and articulated joints.
2. Precision Machinery
In precision machinery, such as CNC machining centers and medical imaging equipment, harmonic reducer cross roller bearings play a crucial role in ensuring precise positioning and movement control. Their compact design makes them valuable in applications where space is at a premium.
3. Aerospace and Defense
The aerospace and defense industries benefit from the lightweight yet robust nature of harmonic reducer cross roller bearings. These bearings find applications in various components, including antenna systems, gimbal systems, and satellite tracking mechanisms.
| Harmonic reducer cross roller bearing parameter | |||||||||||
| Bearing model | External dimension | Corresponding reducer Model | |||||||||
| d | D | H | C | B | H2 | D1 | D2 | d1 | d2 | ||
| Unit ：mm | |||||||||||
| XRB14-55-CSF | 11（9） | 55 | 16.5 | 16 | 13.5 | 2.5 | 41.8 | 28 | 29.8 | 28.4 | CSG/CSF-14 |
| XRB17-62-CSF | 10 | 62 | 16.5 | 16 | 13.5 | 2.5 | 49 | 34 | 36 | 33.8 | CSG/CSF-17 |
| XRB20-70-CSF | 14 | 70 | 16.5 | 16 | 13.5 | 2.5 | 56.5 | 40 | 43 | 40.2 | CSG/CSF-20 |
| XRB25-85-CSF | 20 | 85 | 18.5 | 18 | 16.5 | 2 | 67 | 51 | 55.3 | 52.6 | CSG/CSF-25 |
| XRB32-112-CSF | 26 | 112 | 22.5 | 21.5 | 19 | 3 | 90 | 64 | 74 | 68.6 | CSG/CSF-32 |
| XRB40-126-CSF | 32(24) | 126 | 24 | 22.5 | 21.5 | 2.5 | 105 | 86 | 86 | 81.2 | CSG/CSF-40 |
| XRB50-157-CSF | 40(32) | 157 | 31 | 30 | 28 | 3 | 131.6 | 98 | 108 | 102.6 | CSG/CSF-50 |
| XRB65-210-CSF | 52(44) | 210 | 39 | 37 | 35 | 4 | 176 | 130 | 138 | 132.6 | CSG/CSF-65 |
| Bearing model | Installation hole for out ring | Installation hole for inner ring | Installation hole for inner ring | basic load rating | weight | Corresponding reducer model | ||||
| central diameter(dm) | Installation hole size | central diameter(dn) | Installation hole size | central diameter (dL) | Installation hole size | Cr | Cor | Kg | ||
| kN | kN | |||||||||
| XRB14-55-CSF | 49 | 8-Φ3.5 | 23 | 6-M4 | 17（14.5） | 6-M4（M3） | 7 | 9.1 | 0.15 | CSG/CSF-14 |
| XRB17-62-CSF | 56 | 10-Φ3.5 | 27 | 6-M5 | 19 | 6-M5 | 7.6 | 10.7 | 0.24 | CSG/CSF-17 |
| XRB20-70-CSF | 64 | 12-Φ3.5 | 32 | 8-M6 | 24 | 8-M5 | 8.5 | 13.4 | 0.2 | CSG/CSF-20 |
| XRB25-85-CSF | 79 | 16-Φ3.5 | 42 | 8-M8 | 30 | 8-M6 | 13.8 | 21.6 | 0.45 | CSG/CSF-25 |
| XRB32-112-CSF | 104 | 16-Φ4.5 | 55 | 8-M10 | 40 | 8-M10 | 12.5 | 35.6 | 0.9 | CSG/CSF-32 |
| XRB40-126-CSF | 117 | 20-Φ5 | 68 | 8-M10 | 50 | 8-M10 | 17.6 | 33.9 | 2.8 | CSG/CSF-40 |
| XRB50-157-CSF | 147 | 16-Φ5.5 | 84 | 8-M14 | 60 | 8-M14 | 49.5 | 85 | 4.6 | CSG/CSF-50 |
| XRB65-210-CSF | 198 | 20-Φ6.5 | 110 | 8-M16 | 80 | 8-M16 | 74.6 | 133 | 9.6 | CSG/CSF-65 |
Note: Due to the position of the Installation hole is complex, if you want to order, please ask for the confirmation drawing
| Bearing type | External dimension | Central Path (dm) | Corresponding to the type of reducer | ||||||||
| d | d3 | D | H | C | B | B1 | d1 | d2 | |||
| Unit ：mm | |||||||||||
| XRU14-70-SHF | 38 | 36 | 70 | 15.2 | 14.2 | 13.7 | 5 | 57 | 53 | 64 | SHF/SHG-14 |
| XRU17-80-SHF | 47 | 44.2 | 80 | 17 | 16 | 16.4 | 6.5 | 68.1 | 64 | 74 | SHF/SHG-17 |
| XRU20-90-SHF | 54 | 51.3 | 90 | 18.5 | 17.5 | 17.5 | 7 | 78 | 72.6 | 84 | SHF/SHG-20 |
| XRU25-110-SHF | 67 | 64.2 | 110 | 20.7 | 18.7 | 19.7 | 7.5 | 94.8 | 90 | 102 | SHF/SHG-25 |
| XRU32-142-SHF | 88 | 84 | 142 | 24.4 | 23.4 | 23.4 | 8 | 123 | 117.6 | 132 | SHF/SHG-32 |
| XRU40-170-SHF | 108 | 106 | 170 | 30 | 29 | 28.5 | 9.5 | 148 | 142.6 | 158 | SHF/SHG-40 |
| XRU50-214-SHF | 135 | 129 | 214 | 36 | 34 | 34.5 | 11 | 188 | 182.6 | 200 | SHF/SHG-50 |
| Bearing type | Outer Ring Mounting Hole | Inner Ring Mounting Hole | Basic rated load | Mass. | Corresponding to the type of reducer | ||||
| Mounting hole size 1 | Mounting Hole Dimension 2（on the reverse side of the seal） | Central Path(dn) | Size of mounting hole (on reverse side of seal) | Size of mounting hole (on sealing face) in | Cr | Cor | Kg | ||
| kN | kN | ||||||||
| XRU14-70-SHF | 8-φ3.5 | 2-M3（Silk Depth 10） | 44 | 12-M3（Silk Depth 6） | / | 6.1 | 14 | 0.11 | SHF/SHG-14 |
| XRU17-80-SHF | 12-φ3.5 | 4-M3（Silk Depth 10） | 54 | 20-M3（Silk Depth 6） | / | 9.4 | 16.1 | 0.36 | SHF/SHG-17 |
| XRU20-90-SHF | 12-φ3.5 | 4-M3（Silk Depth 6） | 62 | 16-M3（Silk Depth 6） | 4-M3（Silk Depth 6） | 20.2 | 31.1 | 0.44 | SHF/SHG-20 |
| XRU25-110-SHF | 12-φ4.5 | 4-M3（Silk Depth 6） | 77 | 16-M4（Silk Depth 8） | 4-M3（Silk Depth 6） | 28.5 | 45.2 | 0.7 | SHF/SHG-25 |
| XRU32-142-SHF | 12-φ5.5 | 4-M4（Silk Depth 8） | 100 | 16-M5（Silk Depth 8） | 4-M4（Silk Depth 8） | 47.3 | 77.3 | 1.57 | SHF/SHG-32 |
| XRU40-170-SHF | 12-φ6.6 | 6-M4（Silk Depth 8） | 122 | 16-M6（Silk Depth 10） | 4-M5（Silk Depth10） | 35.5 | 71.2 | 2.4 | SHF/SHG-40 |
| XRU50-214-SHF | 12-φ9 | 6-M5（丝深 10） | 154 | 16-M8（Silk Depth 12） | 8-M5（Silk Depth10） | 80.4 | 151.9 | 4.5 | SHF/SHG-50 |
| Bearing type | External dimension | Corresponding to the type of reducer | |||||||
| d1 | d2 | D | H | C | B | H2 | Dm | ||
| Unit ：mm | |||||||||
| XRD14-55-CSD | 12 | 11 | 55 | 16.6 | 16.1 | 13.9 | 2.7 | 42.5 | CSD-14-2UH |
| XRD17-62-CSD | 14 | 11 | 62 | 16.6 | 16.1 | 13.9 | 2.7 | 49.7 | CSD-17-2UH |
| XRD20-70-CSD | 18 | 16 | 70 | 18.3 | 17.8 | 15.6 | 2.7 | 57 | CSD-20-2UH |
| XRD25-85-CSD | 24 | 20 | 85 | 23.4 | 22.9 | 20 | 3.4 | 73 | CSD-25-2UH |
| XRD32-112-CSD | 32 | 30 | 112 | 24.5 | 23.5 | 20.9 | 3.6 | 95.3 | CSD-32-2UH |
| XRD40-126-CSD | 36 | 32 | 126 | 29.1 | 28.1 | 24.6 | 4.5 | 109.6 | CSD-40-2UH |
| XRD50-157-CSD | 48 | 44 | 157 | 34 | 33 | 29.4 | 4.6 | 138 | CSD-50-2UH |
| Bearing type | Outer Ring Mounting Hole | Inner Ring Mounting Hole | Basic rated load | ||||||
| Central Path(dm) | Mounting hole size 1 | Mounting hole size 2(sealing back) | Central Path(dn) | Mounting Hole Dimension 1(Sealing Front) | Central Path(dl) | Mounting hole size 2(sealing back) | Cr（kN） | Cor（kN） | |
| XRD14-55-CSD | 49 | 6-φ3.5 | 3-M2(Silk Depth 5) | 25 | 10-M3(Silk Depth 7） | 17 | 6-M3(Silk Depth 7） | 7 | 9.1 |
| XRD17-62-CSD | 56 | 10-φ3.5 | 5-M2(Silk Depth 5) | 27 | 8-M5(Silk Depth 8） | 19.5 | 8-M4(Silk Depth 8） | 7.6 | 10.7 |
| XRD20-70-CSD | 64 | 12-φ3.5 | 4-M2(Silk Depth 5) | 34 | 8-M6(Silk Depth 9） | 24 | 8-M4(Silk Depth 8） | 8.5 | 13.4 |
| XRD25-85-CSD | 79 | 18-φ3.5 | 6-M2(Silk Depth 5) | 51 | 16-M4(Silk Depth 12） | 30 | 8-M5(Silk Depth 9） | 13.8 | 21.6 |
| XRD32-112-CSD | 104 | 18-φ4.5 | 6-M3(Silk Depth 7) | 57 | 16-M5(Silk Depth 12） | 41 | 6-M6(Silk Depth 11） | 12.5 | 35.6 |
| XRD40-126-CSD | 117.5 | 18-φ5.6 | 6-M3(Silk Depth 8) | 72 | 16-M6(Silk Depth 15) | 48 | 6-M8(Silk Depth 11) | 35.5 | 71.2 |
| XRD50-157-CSD | 147 | 22-φ6.6 | 4-M3(Silk Depth 8) | 88 | 16-M8(Silk Depth 18) | 62 | 6-M10(Silk Depth 18) | 49.5 | 85 |
