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.
RB Crossed Roller Bearings are high-precision components featuring cylindrical rollers arranged at 90°angles in alternating directions.This allows a single bearing to handle radial,axial,and moment loads simultaneously,making them ideal for compact,high-stiffness applications like robotics,CNC rotary tables,and medical equipment.Available precision grades cover P5,P4 and P2;inner diameter ranges from 30mm to 1250mm while cross-section height varies between 8mm and 110mm.The rings and rollers are manufactured from GCr15 high-carbon chrome steel with surface hardness HRC 60-62 or corrosion-resistant SUS440C stainless steel,and nylon 66 serves as lightweight bearing cage material.Two sealing options are available:standard open type for clean environment and UU/U contact rubber seal to block dust and liquid splashing with industrial heavy-duty grease lubrication.
4th/5th axis heavy indexing tables are robust bolt-on attachments used in Vertical Machining Centers (VMCs) to upgrade a standard 3-axis machine. They add rotational (A, B, or C) axes, enabling the machine to rotate and tilt heavy workpieces for multi-sided machining in a single setup.
Multi-Directional Load Capacity:Unlike standard ball bearings,the crossed arrangement empowers the RB series to accommodate loads from all directions at once.
High Rigidity and Precision:The integration of a preload adjusts the bearing clearance,eliminating internal gaps and allowing for high rotational accuracy and minimal deformation under heavy loads.
Compact Space-Saving Profile:Because one crossed bearing replaces multiple conventional ball or roller bearings,they are exceptionally well-suited for tight,space-constrained assemblies.
Smooth Rotation:Spacer retainers separate the rollers,preventing them from skewing and eliminating friction between rolling elements for a stable,low-torque motion.
Industrial Robotics & Automation:Used in basic motion parts like rotary joints,waists,and wrists for smooth and precise motion control.
Precision Machine Tools:Utilized in the rotating tables of machining centers,rotary units of manipulators,and indexing heads to handle heavy,spinning components.
Medical Equipment:Deployed in sophisticated imaging components like MRI machines,CT scanners,and surgical robots to provide smooth,accurate,and vibration-free movement.
Semiconductor & IC Manufacturing:Provide micron-scale accuracy for wafer handling equipment,photolithography machines,and cleanroom pick-and-place systems.
Optical & Measuring Instruments:Essential for the tracking accuracy of astronomical telescopes,radar antennas,and Coordinate Measuring Machines (CMM).
RB crossed roller bearings act as the core rotary support of vertical machining center's 4/5-axis heavy indexing tables and directly determine indexing precision,cutting stability and overall equipment service life.
Split Outer Ring Optimizes Turntable Assembly:Separable outer ring avoids disassembly of pre-installed reducer and gears during bearing installation,shortening machine assembly cycle and lowering production cost for CNC manufacturers.
Single-Bearing Multi-Load Bearing Simplifies Turntable Layout:One RB replaces multiple bearing combinations to bear workpiece dead weight,axial tightening force and cutting overturning moment synchronously,simplifying turntable internal mechanical structure and reducing overall turntable volume.
Ultra-High Rigid Structure Suppresses Cutting Vibration:Superior rigidity offsets bending deformation caused by heavy rough cutting impact,preventing indexing drift and workpiece dimensional error induced by turntable shaking.
High Precision Ensures Consistent Index Accuracy:P4/P2 precision grade controls tiny rotational runout to maintain stable repeated indexing tolerance,ensuring high-precision finish machining of complex aerospace and mold parts.
Diversified Sealing Resists Harsh Machining Environment:UU rubber seal stops metal chips and cutting liquid from entering bearing interior;customized stainless steel RB prevents rust under long-term coolant splash.
Enhanced Fatigue Property Reduces Machine Downtime:Surface-hardened bearing parts support 24h uninterrupted heavy cutting production,decreasing regular bearing replacement and improving workshop production efficiency.
Newbeetrans is a professional manufacturer of RB crossed roller bearings,supplying customized bearing solutions specially designed for VMC's 4th/5-axis heavy indexing tables and various heavy-duty precision machinery.
Machine Tool Target Customization:Develop zero-backlash,high-rigidity RB bearings with enhanced anti-cutting-fluid sealing and special anti-wear industrial grease as required;custom samples available within 10–15 days.
Strict Precision Production:All raceways and rollers adopt super-fine grinding to reach P5/P4/P2 standards with full dimensional inspection;monthly production capacity over 2 million sets.
Fast Global Logistics:Standard RB in-stock items can be shipped promptly with worldwide multi-channel delivery service.
Authoritative Quality Assurance:Products comply with ISO 9001 & GB/T 307.1 standards,SGS inspection reports can be provided on request.
For technical specifications,pricing,or custom bearing solutions:
Email:paul@newbeetrans.com
Website:www.newbeetrans.com
WhatsApp
sales@newbeetrans.com
+8615090185276