High-Precision SX Crossed Roller Bearings for Machine Tool Rotary Tables

What are SX Crossed Roller Bearings?

SX Crossed Roller Bearings are compact,high-precision bearings featuring cylindrical rollers arranged in a alternating X-pattern.

Available precision grades include P5,P4 and ultra-precision P2.Dimension range:inner diameter 70-500 mm,outer diameter 90-620 mm,cross-section height 10-56 mm.Material options for rings and rollers:GCr15 high-carbon chromium steel or SUS440C stainless steel.Cage selections cover brass,reinforced Nylon 66 and heavy-duty composite materials.Two sealing configurations are offered:open-type for clean environments and UU/U contact rubber seals for dust-proof and splash-proof working conditions.

Standard stock models can be delivered within 7-15 working days.Custom solutions support non-standard dimensions,modified shoulder sizes,corrosion-resistant material upgrade,special high-/low-temperature lubricants and customized greasing-hole layout.Custom lead-time depends on drawing complexity and raw-material availability.

The features of SX Crossed Roller Bearings

Split Outer Ring Design:The outer ring is split circumferentially into two identical halves and held together by three flexible retaining rings.This allows the bearing to be easily assembled during manufacturing while maintaining stable preload and geometry in service.

Single-Piece Solid Inner Ring:Unlike bearings with a split inner ring (such as the RE series), the SX inner ring is manufactured as a continuous, solid single piece.This provides maximum rotational accuracy, rigidity, and runout precision when the inner ring is the rotating member.

Slimmer Profile than RB Series:Designed with a smaller cross-section and lower cross-sectional height than standard RB series crossed roller bearings.This reduces both the overall weight and the external housing dimensions of the machine assembly.

90°Orthogonal Roller Line Contact:Cylindrical rollers alternate at right angles inside a V-groove raceway.A single SX bearing handles combined radial loads, double-direction axial loads, and tilting moment forces simultaneously.

Polymer Spacers/Separators:Synthetic spacers are positioned between rollers to eliminate roller-to-roller friction, prevent roller skewing, and lower operating torque during rotation.

High Precision Tolerance Grades:Commonly available in ISO/DIN precision grades P5, P4, and P2, delivering sub-micron runout accuracy for indexers and robotic joints.

The applications of SX Crossed Roller Bearings

Machine Tool Rotary Tables & CNC Indexers

Application:Installed as the main rotational bearing for 5-axis CNC indexing tables, direct-drive rotary tables, and tool turret positioning stages.

Role:The solid inner ring provides sub-micron axial and radial runout precision, handling heavy cutting forces and tilting moments without elastic deflection.

Robotic Joints & Actuator Units

Application:Wrist, elbow, and waist swivels in high-precision articulated industrial robots and collaborative robot arms.

Role:The ultra-slim cross-section reduces joint weight and overall arm profile while accommodating multidirectional dynamic loads.

Medical & Diagnostic Positioning Systems

Application:C-arm medical imaging bases, radiation therapy alignment heads, and surgical robot manipulators.

Role:Preloaded configurations (such as the INA SX011814-A-VSP eliminate play and provide smooth, low-torque rotational control.

Precision Measuring & Inspection Devices

Application:Coordinate measuring machines (CMM) turntables, optical measuring stages, and radar antenna gimbals.

Role:Maintains uniform rotational accuracy and consistent friction torque across a wide temperature range.

Manufacturer of SX Crossed Roller Bearings

Newbeetrans is a specialized manufacturer of SX-series crossed roller bearings.Our production system covers independent R&D,forging,heat-treatment,ultra-precision grinding and complete performance-verification laboratories under ISO 9001 quality-management certification.

Stock & Customization Capacity

Large inventory of standard SX-series bearings supports 7-15-day shipment.Custom-engineered projects include non-standard dimension development,shoulder-size adjustment,stainless-steel conversion,special-environment lubricant matching and seal modification.Typical custom lead-time is 6-12 weeks,and urgent manufacturing is available for priority customer projects.

Strict Full-Process Quality Assurance

Raw-material batches go through spectral and metallurgical incoming inspection.Every finished SX crossed roller bearing undergoes 100 % inspection:dimensional check,run-out testing,pre-load performance validation and wear-related assessment.Material certificates and SGS third-party inspection reports can be supplied upon request.

Advanced Production Infrastructure

Equipped with special crossed-roller assembling fixtures,raceway ultra-precision grinders and pre-load test benches.MES production-management system implements full-batch traceability to stabilize P5-to-P2 high-precision tolerances.

Global Sales & Technical Support

We cooperate with worldwide sea-freight and air-freight carriers and support FOB,CIP,DAP and other standard international trade terms.Our technical team provides remote model-selection guidance,pre-load adjustment advice and installation consulting for global machine-tool,robot and precision-equipment manufacturers.

For technical specifications,pricing,or custom bearing solutions:

Email:paul@newbeetrans.com 

Website:www.newbeetrans.com