3/4/5-Axis CNC Milled Aluminum Robot Joint Bracket

Robot joints combine bearing seats, gear or motor flanges and lightweight pockets in one part. We machine the bearing bore and flange face in the same setup so the joint axis is square to its mounting surface. 5-axis access cuts angled cable routes and side features without extra fixtures. Lightening pockets are cut with rib thicknesses chosen to keep stiffness while removing mass.

7075-T6 is preferred for highly loaded links and compact joints because its strength allows thinner walls; 6061-T6 suits lighter arms and prototypes at lower cost. Hard anodizing gives wear resistance on bearing shoulders, while Type II anodizing offers color for branding. Steel inserts can be added where screws will be cycled often, as aluminum threads wear under repeated assembly.

Bearing bore diameter, roundness and perpendicularity to the mounting face are measured on CMM at first article, and these critical features are 100% inspected in production. Inspection reports and material certificates are supplied on request. Typical uses include cobot joint housings, SCARA links, gripper bodies, quadruped leg links and gimbal joints.