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 precision rotary auxiliary modules matched with small vertical machining centers,mold engraving machines,precision grinding equipment and miniature automated processing stations.As the core fourth and fifth axis execution components,they realize multi-angle arbitrary indexing,continuous rotary feed and five-sided one-time clamping processing of small precision parts such as medical hardware,semiconductor molds,optical components and miniature aerospace structural parts.Different from large heavy-duty rotary tables,small indexing tables pursue ultra-narrow overall thickness,light dead weight and low rotation inertia,while facing complex composite loads during cutting:axial load from workpiece clamping weight,radial cutting force generated by milling/drilling,and overturning moment caused by eccentric machining.Meanwhile,the working environment contains tiny metal chips,cutting fluid splashes and frequent start-stop reciprocating rotation.These equipment put forward extremely strict requirements for internal supporting bearings:miniaturized installation space,stable low-torque rotation,high anti-tilting rigidity,excellent dust and liquid resistance,and long continuous operation fatigue life.Any bearing clearance,rotation jitter or micro deformation will directly lead to workpiece indexing deviation,dimensional out-of-tolerance and surface machining defects,affecting the overall processing yield of precision small parts.
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,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.
Constant thin cross-section realizes miniaturized table body design:CNC small 4/5-axis indexing tables are limited by the internal installation space of small machining equipment,and traditional combined angular contact bearing groups will greatly increase the overall thickness and weight of the turntable.Thin section four point contact ball bearings adopt equal cross-section design,the wall thickness will not increase with the expansion of inner diameter,which greatly saves the axial and radial assembly space inside the indexing table.It effectively reduces the overall outline size and self-weight of the small rotary table,optimizes the stroke range of the machine tool spindle,and improves the flexibility of multi-angle processing of miniature workpieces.
Single bearing bears three composite cutting loads to simplify internal structure:During the indexing and cutting process,the small rotary table bears the radial cutting force of the tool,bidirectional axial clamping load and eccentric overturning moment at the same time.A single thin section four point contact ball bearing can independently bear all composite loads,replacing two sets of matched angular contact bearings used in traditional turntable structures.It reduces the number of internal transmission and supporting parts of the indexing table,simplifies the processing and assembly procedures of the turntable shell,lowers the overall manufacturing cost of the 4/5-axis rotary module,and also reduces assembly errors caused by multi-bearing matching.
Preloaded high rigidity guarantees ultra-precise indexing repeat accuracy:Precision P4/P5 grade thin four-point contact bearings can be preloaded through oversized steel balls to eliminate internal clearance and greatly improve anti-deformation rigidity.When small parts are milled and drilled with eccentric loads,the bearing can effectively restrain micro tilting deformation of the tabletop,avoid indexing position drift.It maintains micron-level repeated positioning accuracy of the small rotary indexing table,ensures consistent dimensional tolerance of batch precision parts,and reduces the reject rate caused by rotation jitter.
Low inertia & stable low torque improves dynamic indexing response:The thin inner and outer rings and tiny steel ball structure reduce the rotary inertia of the indexing table rotating core.The 4/5-axis small rotary table needs frequent angle switching,rapid acceleration and deceleration reciprocating indexing; the low-inertia thin bearing shortens the servo response delay,speeds up the workpiece clamping and positioning rhythm,and significantly improves the production efficiency of precision automated processing lines.At the same time,ultra-precision super-finished raceways maintain stable friction torque fluctuation during long-term reciprocating rotation,no abnormal vibration or noise during low-speed precise indexing.
Diversified sealing & material options adapt cutting workshop working conditions:J-series double rubber sealed thin four-point contact bearings are equipped with contact sealing structure,which can effectively block metal micro-chips,cutting fluid splashes and workshop dust from entering the raceway,reducing bearing wear risk.For special processing environments with corrosive cutting liquid,9Cr18 stainless steel customized bearings can be selected to resist liquid corrosion.Matching industrial high-temperature anti-wear grease supports long-time continuous cutting operation of the indexing table,extends bearing service life and reduces machine tool downtime caused by frequent maintenance and bearing replacement.
Excellent continuous operation durability lowers equipment maintenance cost:All raceways and rolling elements are ultra-precision ground with high hardness,possessing outstanding fatigue resistance.It adapts to 24-hour uninterrupted reciprocating indexing and cutting work of small CNC rotary tables,extends the lubrication maintenance cycle and bearing replacement cycle,cuts the after-sales maintenance cost of 4/5-axis equipment for processing manufacturers,and ensures stable long-term mass production.
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,precision machine tool rotary modules and slim rotary automation equipment.
Machine Tool Special Customization:Supply high-rigidity preloaded thin bearings,enhanced anti-cutting-fluid double seal structures,high-temperature long-life special grease and full stainless steel customized versions according to machine tool working conditions; customized 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 to meet the high precision demand of CNC rotary indexing equipment.
Global Fast Shipment:Mass stock of standard KA / KB / KC / KD / KF / KG open thin series and JA / JB sealed series supports quick delivery; complete cross-border logistics service covers global machine tool manufacturers and automation equipment suppliers.
Authoritative Quality Certification:All products meet ISO 9001 and relevant national precision bearing 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