CSF (CSG) Harmonic Reducer Bearings
The outer ring of the CSF (CSG) harmonic reducer bearing is divided into two halves, and the inner ring is an integral structure with its own mounting holes, which is suitable for the CSF (CSG) series of harmonic reducers. The rigid bearings for harmonic reducers are cross cylindrical roller structures. According to their use occasions, they are divided into two categories: split outer ring, integral inner ring, and both outer ring and inner ring are integral; the rolling elements are cylindrical rollers, which are arranged vertically at 90° to each other in a V-shaped raceway. This type of bearing can simultaneously withstand loads in all directions such as axial loads, radial loads, and overturning moments. The bearings have high precision, high rigidity, and composite load-bearing capacity.
The strain wave gear, also known as the "harmonic drive", is a gearing component that is compact, light, and produces no backlash. It is an indispensable component for the reliable and accurate operation of light industrial robots and manipulators, especially as a speed reducer. MONTON is a leading manufacturer of strain wave gears; we have a strong R & D department, and we produce tailored harmonic drive systems for industry and academic partners.
Characteristics of MONTON strain wave gears:
High precision: As multiple teeth engage simultaneously at two 180° symmetric positions, the errors of the pitch of gear teeth and cumulative errors of the pitch of teeth have an average influence on rotation precision, contributing to very high position precision and rotation precision.
Large drive ratio: The single-stage harmonious drive device has a simple structure with a drive ratio from 30:1 to 500:1. Therefore, three basic components on a single axis can realize a high drive ratio.
High load capacity: In strain wave gear systems, the engagement between teeth is a kind of surface contact. As many teeth engage with each other at the same time, the load of each unit is small, which means the load capacity is higher than other drive forms.
Compact and lightweight: Its volume and weight are reduced significantly compared with normal gear devices, and therefore the size is small, and the weight is light.
The harmonic reducer is mainly composed of three basic parts: harmonic generator, flexible wheel and rigid wheel, in addition to rigid bearing (cross roller bearing) and flexible bearing (thin-wall deep groove ball bearing). The inner hole of the flexible bearing matches with the outer ring of the elliptical cam. The outer ring is elastically deformed by the ball and matches with the inner diameter of the opening of the flexible wheel. The outer periphery of the opening of the flexible wheel is engraved with gears, which mesh with the teeth of the rigid wheel. The number of teeth of the rigid wheel is more than that of the flexible wheel. The flexible wheel and the rigid wheel mesh when the axis is long and separate when the axis is short. The bottom of the flexible wheel is fixed to the output end, and the rigid bearing is installed at the output end of the reducer and connected to the outside world. Harmonic reducers are usually used in industries such as robots, machine tools, and aerospace. They have very high requirements for the accuracy, rigidity, and load-bearing capacity of harmonic reducers. Therefore, the processing and installation accuracy of each component inside the harmonic reducer are very high, and the requirements for bearings are also very high. The most important thing for rigid bearings is the rigidity, reliability, and rotation accuracy of the bearings. Rigid bearings will be adjusted to a certain preload before leaving the factory to ensure sufficient rigidity of the bearings; the most important thing for flexible bearings is the maximum radial deformation of the bearings.Harmonic reducer bearings include two types: crossed roller bearings and flexible bearings. Crossed roller bearings include four series, CSG (CSF) series, CSD series, SHG (SHF) series, and SHD series. The naming method adopts the naming of reducers; the flexible bearing is named F-harmonic reducer model.
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