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Specialized cross roller bearing for robot gearboxes
Robot gearboxes have the characteristics of high precision, high rigidity, high load capacity, high transmission ratio, long service life, low inertia, low vibration, low noise, low heat, compact structure and easy installation.
Description
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Product Overview
1. Robot gearboxes have the characteristics of high precision, high rigidity, high load capacity, high transmission ratio, long service life, low inertia, low vibration, low noise, low heat, compact structure and easy installation. At present, there are mainly two types used in the field of robot gearboxes: wave gearboxes and RV gearboxes.
2. Bearings, as one of the key components of the reducer, are divided into the following categories according to the type of reducer: cross roller bearings for wave reducers, flexible bearings for wave reducers, angular contact ball bearings for RV reducers. At the same time, cross-roller bearings for wave gearboxes include four series: CSG (CSF), CSD, SHG (SHF), SHD. The designation of cross-roller bearings for wave gearboxes is carried out according to the designation of the gearbox.
Product categories
Cross-roller bearings for wave gearboxes are divided into two large groups according to application conditions: with a split outer ring and a solid inner ring; with solid outer and inner rings. Rolling elements are cylindrical rollers located mutually perpendicular at an angle of 90° in a V-shaped raceway. Bearings of this design are capable of simultaneously supporting axial load, radial load and tilting moment, that is, loads in different directions, and have high precision, high rigidity and combined load-bearing capacity.
Bearing lubrication
1. Purpose of lubrication: with the help of a lubricant, a separating oil film is created on the friction surfaces between the rings, rolling elements and separating elements, which reduces friction and wear of the bearing, prevents seizure and thereby extends the service life of the bearing. In addition, the lubricant also prevents bearing corrosion, reduces vibration and noise, and also performs a cooling function.
2. Cross-roller bearings for wave gearboxes are already filled with high-quality complex lithium grease before leaving the factory; Under normal operating conditions, additional lubrication is not required during operation. After filling with lubricant, the friction torque of the bearing temporarily increases during the initial period of operation, and after the lubricant is evenly distributed between the raceways and rollers, the friction torque gradually stabilizes.
Bearings for wave gearboxes of the SHF (SHG) series
Bearings for wave gearboxes of the SHF (SHG) series have solid outer and inner rings, which practically does not affect the performance characteristics during installation and ensures stable rotational accuracy and torque. They are mainly used in the output units of gearboxes of the SHF and SHG series.
| Bearing size | Dimensions | ||||||||
| d | d3 | D | H | C | B | B1 | d1 | d2 Diameter at centers | |
| Unit: mm | |||||||||
| SHF(SHG)-14 | 38 | 36 | 70 | 15.1 | 14.1 | 14.6 | 5 | 57 | 53 |
| SHF(SHG)-17 | 47 | 44.1 | 80 | 17 | 16 | 16.4 | 6.5 | 68.1 | 64.1 |
| SHF(SHG)-20 | 54 | 51.3 | 90 | 18.5 | 17.5 | 17.5 | 7 | 78 | 72.6 |
| SHF(SHG)-25 | 67 | 65 | 110 | 20.7 | 18.7 | 19.7 | 7.5 | 94.8 | 90 |
| SHF(SHG)-32 | 88 | 84 | 142 | 24.4 | 23.4 | 23.4 | 8 | 123 | 117.6 |
| SHF(SHG)-40 | 108 | 106 | 170 | 30 | 29 | 28.5 | 9.5 | 148 | 142.6 |
| SHF(SHG)-50 | 135 | 129 | 214 | 36 | 34 | 34.5 | 11 | 188 | 182.6 |
| Bearing size | Outer ring mounting holes | Inner ring mounting holes | Basic load ratings | Weight | ||||||
| Diameter at centers dm | Mounting hole size 1 | Mounting hole size 2 on the side opposite the seal | Diameter at centersdn | Mounting hole size on the side opposite to the seal | Seal side mounting hole size | Cr | Cor | Kg | ||
| kN | kN | |||||||||
| SHF(SHG)-14 | 64 | 8-Φ3.5 | 2-M3(depth 8) | 44 | 12-M3(depth 6) | - | 5.8 | 8.6 | 0.25 | |
| SHF(SHG)-17 | 74 | 12-Φ3.5 | 4-M3(depth 8) | 54 | 20-M3(depth 6) | - | 10.4 | 16.3 | 0.35 | |
| SHF(SHG)-20 | 84 | 12-Φ3.5 | 4-M3(depth 6) | 62 | 16-M3(depth 6) | 4-M3(depth 6) | 14.6 | 22 | 0.5 | |
| SHF(SHG)-25 | 102 | 12-Φ4.5 | 4-M3(depth 6) | 77 | 16-M4(depth 8) | 4-M3(depth 6) | 21.8 | 35.8 | 0.8 | |
| SHF(SHG)-32 | 132 | 12-Φ5.5 | 4-M4(depth 8) | 100 | 16-M5(depth 8) | 4-M4(depth 8) | 38.2 | 65.4 | 1.65 | |
| SHF(SHG)-40 | 158 | 12-Φ6.6 | 6-M4(depth 9) | 122 | 16-M6(depth 10) | 4-M5(depth 10) | 43.3 | 81.6 | 2.8 | |
| SHF(SHG)-50 | 200 | 12-Φ9 | 6-M5(depth 12) | 154 | 16-M8(depth 12) | 8-M5(depth 10) | 81.6 | 149 | 5 | |
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