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.
Gripper rotary units and SCARA robot swing shafts are core lightweight rotary components widely deployed in 4-axis SCARA robots used for 3C electronics assembly,battery sorting,pharmaceutical packaging and micro-component pick-and-place production lines.
Gripper rotary units:Mounted at the robot's end effector,they achieve unlimited 360° rotation of pneumatic or electric grippers to adjust workpiece angles during assembly.The internal installation space is extremely narrow,and the bearing continuously bears eccentric overturning moment from clamped workpieces,radial gravity of the gripper,and bidirectional axial impact from frequent clamping/releasing movements.Micro vibration or rotation clearance will directly lead to assembly offset of tiny electronic parts.
SCARA robot swing shafts:The primary horizontal rotary structure of SCARA upper arms,responsible for high-speed reciprocating swing motion to complete horizontal material transfer.The swing shaft requires ultra-light weight to reduce dynamic inertia and realize fast acceleration & deceleration.It bears composite loads including arm self-weight,end gripper payload,and alternating tilting moment during high-frequency movement.The compact arm shell leaves limited room for bearing installation,and the equipment demands micron-level repeated positioning accuracy for long-cycle continuous operation.Both parts operate at high cycle speeds in clean assembly workshops filled with plastic dust and tiny chip debris,requiring bearings with low friction torque,lightweight structure,good dust resistance and long anti-fatigue service life.
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),photolithography equipment to achieve high geometric accuracy in vacuum or cleanroom environments.
Ultra-Thin Constant Cross-Section Fits Miniature Internal Cavities:Gripper rotary units feature ultra-narrow built-in space,while SCARA swing shafts adopt slim arm shell design with limited radial and axial assembly room.The uniform equal cross-section design of thin four-point contact bearings occupies minimal installation space,eliminating the bulky size of paired standard bearings and perfectly matching the miniaturized structural layout of end rotary units and swing shafts.It effectively reduces the overall size of SCARA robot arms and expands the effective working stroke of the equipment.
Single Bearing Handles Multiple Composite Loads Simultaneously:One thin section four point contact bearing replaces two matched angular contact bearings.It independently bears radial weight of swing arms/grippers,bidirectional axial impact loads and eccentric overturning moment generated by offset clamped workpieces.The integrated bearing structure simplifies the internal mechanical layout of rotary units and swing shafts,cuts the number of matching parts,lowers robot production assembly difficulty and overall manufacturing cost.
Low Inertia & Stable Low Torque Boost High-Speed Cycle Efficiency:Lightweight thin inner/outer rings and miniature steel balls greatly reduce rotary inertia of gripper rotary parts and SCARA swing shafts.The bearing runs with extremely steady low friction torque without micro jitter during frequent acceleration,deceleration and forward/reverse rotation.It supports thousands of pick-and-place cycles per minute for electronic assembly lines,shortening single operation tact and greatly improving production throughput.
Preloaded High Rigidity Ensures Micro Assembly Precision:Preload eliminates internal bearing clearance,offering strong anti-tilting rigidity.During high-speed swing and gripper angle adjustment,no angular deflection or positioning drift occurs,maintaining consistent micron-level repeated positioning accuracy.It avoids defective products caused by tiny component assembly deviation in semiconductor and electronic manufacturing workshops.
Sealed & Material Options Adapt Clean Workshop Environments:J-type double rubber sealed thin bearings effectively block plastic dust,electronic fragments and tiny workpiece chips floating in assembly rooms; 9Cr18 stainless steel customized bearings are available for food and medical SCARA equipment to resist water mist and cleaning fluid splashing,effectively extending bearing continuous service life.
Excellent Anti-Fatigue Performance Reduces Equipment Downtime:Precision super-finished raceways and high-hardness rolling elements possess outstanding fatigue resistance,adapting 24-hour non-stop high-cycle reciprocating rotation of gripper rotary units and swing shafts.Low wear loss lengthens lubrication maintenance and bearing replacement intervals,reducing factory equipment shutdown time and after-sales maintenance expenditure.
Newbeetrans is a professional manufacturer specializing in thin section bearings.We develop customized bearing solutions exclusively for gripper rotary units,SCARA robot swing shafts and various slim rotary automation equipment.
Robot Customized Bearing Solutions:Supply low-inertia lightweight thin bearings with dust-proof J seals,food/cleanroom-grade grease or full stainless steel materials as required; 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.
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 all global customers.
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