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.
Thin section four-point contact ball bearings are space-saving,single-row bearings featuring a special "gothic arch" raceway that creates four points of contact between the balls and the rings.They are engineered to handle radial,axial,and moment loads simultaneously within a highly compact,lightweight envelope.Inner diameter:20 mm-1000 mm Cross-section:4.7625×4.7625 mm-25.4×25.4 mm.Material:bearing rings and rolling elements steel GCr15 or stainless steel 9Cr18 Precision levels:P0,P6,P5 and P4 Two structural forms are available:open type for clean indoor environments and sealed J-series with rubber contact seals for dust,splash and particle isolation.For lubrication,standard industrial grease and low-outgassing vacuum lubricants are optional.Standard thin section bearing models can be delivered within 7–15 working days,and customized sizes,materials and sealing schemes are arranged according to customer technical drawings.
CNC 4/5-axis small rotary indexing tables are compact high-precision rotary auxiliary units widely matched with small vertical machining centers,desktop CNC engraving machines,precision mold grinders and medical part processing equipment.Different from large heavy-duty rotary tables,small 4/5-axis indexing tables are designed for miniature workpiece multi-angle machining,including electrode mold processing,aerospace tiny parts,medical implant parts,electronic precision components and jewelry carving.Equipped with servo motors,high-resolution encryption and hydraulic locking structures,they realize 360° continuous rotation and arbitrary angle fixed-point indexing,completing multi-surface milling,drilling,tapping and contour machining without repeated clamping.The overall cabinet and installation space of small CNC equipment are extremely limited,so the rotary table must adopt slim,lightweight integrated structure.The built-in support bearings need to bear composite dynamic loads in long-term processing:radial load of fixtures and small workpieces,alternating axial clamping force during hydraulic locking,and large overturning moment generated by eccentric workpiece cutting.CNC precision machining puts forward strict technical indicators for table bearings:sub-arc-second indexing repeatability,ultra-low rotation jitter,stable low friction torque,anti-cutting fluid corrosion,chip dust resistance and long fatigue life.Any bearing clearance,micro-deformation or rotation shake will directly cause dimensional tolerance overrun,surface texture ripples and scrap precision workpieces.
Multi-Directional Load Capacity:The unique geometry creates four points of contact between the ball and the raceway.This enables the bearing to accommodate bi-directional axial loads,radial loads,and overturning moments.
Space and Weight Savings:Unlike standard bearings where the cross-section scales up with the bore diameter,thin-section bearings maintain a constant cross-section across different sizes.This yields significant mass reduction and a much smaller design envelope.
Replaces Duplex Bearings:By handling thrust loads from both directions and resisting moment loads,a single four-point contact bearing can often do the work of a paired back-to-back or face-to-face angular contact bearing setup.
High Rigidity:They are highly rigid and provide excellent running accuracy,often used with an internal preload (using balls slightly larger than the raceway space) to eliminate clearance and increase overall stiffness.
Aerospace,Defense,& Satellites Gimbal & Pointing Systems:Used in missile launchers and radar tracking platforms for precise angular control and low-torque movement.
Space Exploration:Deployed in satellites and spacecraft mechanisms where minimizing payload weight is a strict requirement.
Robotics & Automation Articulating Joints:Utilized in the elbows and joints of robotic arms to reduce friction while handling loads in compact spaces.
Rotary & Indexing Tables:Keeps machine tools and work-holding devices rigid and perfectly aligned with minimal deflection.
Medical & Imaging Equipment Diagnostic Scanners:Supports smooth,quiet,and stable rotation in large machinery such as MRI and CT scanners.
Surgical Robotics:Enables precise,repeatable motion required for delicate robotic surgical procedures.
Semiconductor Manufacturing Manufacturing Tools:Used in wafer steppers,chemical mechanical polishers (CMP),and photolithography equipment to achieve high geometric accuracy in vacuum or cleanroom environments.
Slim Constant Cross-Section Fits Mini Machine Compact Layout:Small 4/5-axis CNC machines have narrow internal installation cavities for rotary tables,and traditional double matched angular contact bearings occupy excessive radial and axial space.Thin section four point contact ball bearings retain fixed ultra-thin cross-section regardless of inner diameter,greatly reducing the overall thickness and weight of the indexing turntable.It allows machine tool designers to shrink the table shell size,reserve more stroke space for spindle machining,and realize compact miniaturized machine structure design.
Single Bearing Undertakes Full Machining Composite Loads:One thin four-point contact bearing can replace two sets of paired angular contact bearings.It independently bears radial weight of jigs and miniature blanks,bidirectional axial locking force of hydraulic brakes,and eccentric overturning moment during side milling and inclined drilling.The integrated single-bearing structure simplifies the turntable rotary transmission assembly,reduces the number of matching precision parts,shortens machine assembly time and lowers the manufacturing cost of small 4/5-axis rotary tables.
Preloaded Zero-Clearance High Rigidity Guarantees Machining Precision:Internal preload eliminates all internal bearing clearance and provides powerful anti-tilting rigidity.During high-speed indexing and stable cutting processes,the bearing suppresses tiny turntable deflection and rotational vibration,avoiding surface ripple marks on workpieces and angular positioning errors.It maintains consistent sub-arc-second repeat indexing accuracy,ensuring ultra-high dimensional precision of precision molds,aerospace micro-parts and medical implants.
Sealed Structure Resists Cutting Fluid & Metal Chips:J-type integral rubber sealing thin bearings form a complete isolation barrier,effectively blocking cooling cutting fluid splash and tiny metal chips generated by milling.Compared with open bearings,sealed models avoid raceway abrasion and grease failure caused by pollutant intrusion,extend bearing service life and reduce regular machine tool maintenance frequency.
Low Inertia Improves CNC Processing Efficiency:Ultra-thin inner and outer rings and miniature steel balls greatly cut bearing rotary inertia.The small 4/5-axis indexing table realizes fast acceleration and deceleration indexing without motion lag,shortens the auxiliary clamping switching time between each machining process,and significantly boosts the unit time output of small batch precision parts.
Excellent Anti-Fatigue Performance for Long-Time Continuous Machining:Super-hard super-finished raceways and rolling elements have outstanding anti-fatigue and wear resistance,adapting 24-hour uninterrupted cyclic indexing and intermittent cutting of small CNC equipment.Low wear loss reduces bearing replacement cycles and avoids production shutdown caused by table precision failure.
Newbeetrans is a professional manufacturer specializing in thin section bearings.We develop customized bearing solutions exclusively for CNC 4/5-axis small rotary indexing tables and other precision machine tool rotary components.
Machine Tool Customization:Supply cutting fluid resistant sealed thin bearings,high rigidity preloaded P4/P5 precision grades and stainless steel anti-corrosion versions; customized machine tool prototype samples can be delivered within 10–15 days.
Precision Manufacturing Standard:All inner and outer ring raceways adopt ultra-precision superfinishing to reach P0,P6,P5 and P4 accuracy grades.Every finished bearing undergoes full inspection of dimensional tolerance,rotational torque and runout before shipment.
Global Fast Shipment:Mass stock of KA / KB / KC / KD / KF / KG open thin series and JA / JB sealed series supports quick delivery;complete cross-border logistics service covers all global customers.
Authoritative Quality Certification:All products meet ISO 9001 and precision machine tool bearing industry standards,and SGS test reports can be provided upon request.
For technical specifications,pricing,or custom bearing solutions:
Email:paul@newbeetrans.com
Website:www.newbeetrans.com
WhatsApp
sales@newbeetrans.com
+8615090185276