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As core high-precision components installed inside joint reducers of industrial robots, these bearings guarantee stable operation, precise positioning and load-bearing capacity. They are mainly divided into two categories by reducer type:
Bearings for Harmonic Reducers
Mainly applied to wrists and small arm joints of light-duty miniature robots. Dominated by flexible thin-wall bearings and crossed roller bearings, they feature compact structure for narrow installation spaces, with smooth rotation and high positioning accuracy.
Bearings for RV Reducers
Widely adopted for base, waist and large arm joints of heavy-duty industrial robots. This type of heavy-load precision bearing consists of eccentric shaft bearings, cycloid needle roller bearings and precision angular contact bearings. It features high rigidity, large load capacity, impact resistance, tolerance to frequent reversing and small clearance. With strong load capacity and long service life, it is a key transmission part for heavy industrial robots.
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Designation |
Main dimensions (mm) |
Outer ring mounting hole |
Inner ring mounting hole |
Basic Rated Load Radial (KN) |
Weight (kg) |
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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d |
D |
H |
H1 |
H2 |
H3 |
D1 |
D2 |
d1 |
d2 |
PCD1 |
W1 |
PCD2 |
N2 |
PCD3 |
N3 |
Cr |
Cor |
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