NewBee Machinery is a professional machinery parts manufacturer providing high quality precision bearings, high-quality non-standard transmission components, and intelligent CNC equipment and more.
NewBee Machinery is a professional machinery parts manufacturer providing high quality precision bearings, high-quality non-standard transmission components, and intelligent CNC equipment and more.
RA crossed roller bearings are specifically designed for precision rotary systems,featuring a 90° orthogonal crossed roller layout that enables simultaneous bearing of radial loads,axial loads,and overturning moment loads.They are suitable for high-precision,high-rigidity,and space-constrained applications.Their integrated inner ring structure enhances system rigidity and simplifies installation,while the optional preload configuration eliminates internal clearances,making them ideal for equipment requiring stable and precise rotation,such as industrial robots,precision machine tools,optical instruments,and semiconductor manufacturing equipment.
The 4th,5th,and 6th axes are the wrist joints of articulated robotic arms,forming the core motion unit for end-effector orientation.
4th Axis (Wrist Roll):Rotates the wrist around its central axis,adjusting the end-effector's rotational orientation.
5th Axis (Wrist Pitch):Tilts the wrist up and down,controlling the end-effector's vertical angle.
6th Axis (Wrist Yaw):Provides final rotational adjustment at the tool flange,enabling precise positioning and continuous rotation.These three axes work together to deliver multi-angle,high-precision positioning for tasks like assembly,welding,and handling.They require compact size,high rigidity,and precise motion control to support combined moment,radial,and axial loads from the end-effector.
RA crossed roller bearings are the core rotary support for robotic wrist joints,directly determining the arm's precision,rigidity,and operational stability.
Compact & Lightweight for Wrist Miniaturization:Ultra-thin section (8mm–13mm) and lightweight design fit the limited space of 4th/5th/6th axes,enabling slim,agile wrist structures without sacrificing rigidity.
Ultra-High Precision for Micron-Level:Positioning P4/P2 precision and ≤0.002mm runout tolerance ensure precise rotation,eliminating positioning errors in assembly or welding.
High Rigidity Against Deflection:Crossed-roller layout maximizes contact area,resisting deformation under heavy end-effector loads.Critical for maintaining accuracy during high-torque tasks.
Composite Load Capacity for Complex Forces:Bears radial,axial,and moment loads simultaneously,replacing multiple bearings and simplifying wrist structure.Reduces assembly errors.
Low Friction & Smooth Motion:Optimized roller geometry minimizes friction and vibration,ensuring stable,jitter-free movement.Prevents micro-vibration from affecting task quality.
Long Life for Continuous Operation:Surface-hardened materials (HRC 60-62) enhance fatigue resistance,supporting 24/7 industrial use.
Newbeetrans is a professional manufacturer of RA crossed roller bearings,delivering tailored solutions for robotic wrist joints.
Robotic-Focused Customization:Designs for wrist compactness,high rigidity,and low backlash.Supports special lubrication and non-standard sizes.Samples in 10–15 days.
Precision Manufacturing:P4/P2-grade precision via super-fine grinding.Strict quality control for critical dimensions.Monthly capacity >2 million sets.
Fast & Reliable Delivery Standard:RA series shipped within 72 hours.Global logistics support.Quality Assurance ISO 9001 & GB/T 307.1 certified.SGS inspection reports available.
For technical specifications,pricing,or custom bearing solutions:
Email:paul@newbeetrans.com
Website:www.newbeetrans.com
WhatsApp
sales@newbeetrans.com
+8615090185276