
High-Rigidity 6.5 Inch Bore JU065XPO Thin Section Bearings for Industrial Robot Waist Joints
| Item No | JU065XPO / CSXU065-2RS |
| Size (d*D*B) | 165.1×184.15×12.7mm |
| Material | Chrome Steel Gcr15 / 52100 |
| Lead Time | 3-5 Days |
| Weight | 0.39KG |
| MOQ | 5 pcs |
⚙️Product Description:
The JU065XPO / CSXU065-2RS (165.1 x 184.15 x 12.7 mm / 6.5 x 7.25 x 0.5 in) is an extra-lightweight, high-precision thin section four-point contact ball bearing (“X” type Gothic arch raceway) engineered specifically for robotic articulation joints and space-constrained rotary bases. Designed within the ultra-slim 12.7mm (1/2 inch) cross-sectional profile, a single JU065XPO unit replaces multi-bearing arrangements by simultaneously sustaining complex radial loads, double-direction axial forces, and heavy overturning moment loads. Available in open type (JU065XPO) or sealed type (CSXU065-2RS) with low-friction contact seals, we supply these space-saving thin section bearings under our proprietary RMO brand while facilitating multi-brand OEM direct sourcing for global industrial robotics, semiconductor arms, and medical automation builders.

⚙️Product Features:
- Gothic Arch Four-Point Contact Geometry: Unique 4-point raceway contact angle allows a single compact bearing to sustain combined radial, thrust, and heavy moment loads simultaneously.
- Ultra-Slim 12.7mm Constant Cross-Section: Maintains a minimal 1/2-inch cross-sectional height across a large 165.1mm (6.5 in) inner bore, drastically saving robotic joint space and mass.
- Multi-Bearing System Consolidation: Replaces traditional pairs of angular contact or tapered roller bearings, simplifying housing design and assembly alignment.
- Sealed & Pre-Lubricated Options: CSXU065-2RS contact seals retain long-life synthetic grease and shield precision raceways against cleanroom dust and particulate entry.
⚙️Product Application:
Engineered for compact robotic integration, moment load resistance, and low mass inertia, the JU065XPO thin section bearing is widely specified in:
- Industrial robotics & automation: 6-axis robot waist & shoulder joints, SCARA arm bases, and collaborative robot (cobot) rotators.
- Semiconductor & cleanroom equipment: wafer handling robotic arms, vacuum chamber rotators, and liquid crystal transfer gantry joints.
- Medical & optical platforms: surgical robot manipulator arms, CT scanner rotating gantry mounts, and satellite optical trackers.
- Precision rotary stages: hollow rotary indexing tables, radar antenna mounts, and multi-axis gimbal camera rigs.
⚙️Precautions:
| 1. Keep clean | 2. Use with caution | 3. appropriate tool | 4. Hot-loading | 5. Be careful of rust |
| Dust will have a bad effect on the bearing, so keep the surrounding clean. | Strong impact during use can easily cause scratches and indentations. | Avoid replacing existing tools, and use appropriate tools. | Bearings are precision parts, so hot installation is recommended. | Sweat on your hands during operation will cause rust, so it is best to wear gloves. |
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⚙️Obtain Certificate:
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⚙️Technical Parameters:
| Model No. | JU065XPO / CSXU065-2RS |
| Bearing Type | Thin Section Four-Point Contact Ball Bearing |
| Dimensions | 165.1×184.15×12.7mm (Inner d x Outer Dia D x Total Width/Height B) |
| Imperial Dimensions | Bore(d)=6.500 in, OD=7.250 in, Width/Height=0.500 in |
| Raceway Profile | Gothic Arch 4-Point Contact Geometry (“X” Type) |
| Seal type | Dual Contact Rubber Seals (-2RS) |
| Material | Chrome Bearing Steel GCr15 / 52100 |
| Lubrication Type | |
| Precision Rating | |
| Target Application | Robotic Joints, Wafer Arms, Rotary Indexing Tables |
| Package | |
| Lead Time | |
| Brand | RMO (Own Brand) / Neutral / OEM Custom / Other Global Brands |
| Shipping | |
| Service | Support Sample Testing |
| Payment | 100% TT, or 30% TT In Advance, 70% TT After Finished Production |

| Model No. | d | D | B | m |
| CSXU040-2RS | 101.6 mm | 120.65 mm | 12.7 mm | 0.25 KG |
| CSXU045-2RS | 114.3 mm | 133.35 mm | 12.7 mm | 0.28 KG |
| CSXU050-2RS | 127 mm | 146.05 mm | 12.7 mm | 0.31 KG |
| CSXU055-2RS | 139.7 mm | 158.75 mm | 12.7 mm | 0.34 KG |
| CSXU060-2RS | 152.4 mm | 171.45 mm | 12.7 mm | 0.37 KG |
| CSXU065-2RS | 165.1 mm | 184.15 mm | 12.7 mm | 0.39 KG |
| CSXU070-2RS | 177.8 mm | 196.85 mm | 12.7 mm | 0.42 KG |
| CSXU075-2RS | 190.5 mm | 209.55 mm | 12.7 mm | 0.45 KG |
| CSXU080-2RS | 203.2 mm | 222.25 mm | 12.7 mm | 0.48 KG |
| CSXU090-2RS | 228.6 mm | 247.65 mm | 12.7 mm | 0.53 KG |
| CSXU100-2RS | 254 mm | 273.05 mm | 12.7 mm | 0.59 KG |
| CSXU110-2RS | 279.4 mm | 298.45 mm | 12.7 mm | 0.65 KG |
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