Our ultra thin wall equal cross section bearings and crossed roller bearings are precision rotary components for humanoid robot joint systems. Equal cross-section thin wall ball bearings keep unchanged cross-section while increasing inner diameter, saving limited installation space and cutting the weight of robot limbs. The product portfolio covers deep groove ball, angular contact ball and four point contact ball thin wall bearings, capable of bearing radial, axial and tilting moment loads. Crossed roller bearings provide high rigidity and excellent anti-tilting capacity for heavy-load joints. Fabricated from high-grade bearing steel or stainless steel with precision grinding treatment, these bearings achieve low friction torque and high rotational accuracy. They are core parts used in ankle, knee, hip, shoulder, elbow and wrist joints of humanoid robots, supporting stable and high-precision movement for bionic robotic systems.