RA Series
Тонкостенная Подшипники скрещенных роликов
50–200mm Bore | 8–13mm Width | лёгкиеweight Design | P5/P4/P2 Grade
The RA series is a thin-walled, lightweight подшипник скрещенных роликов specifically engineered for applications where every gram matters. Разъёмная наружное кольцо design позволяет easy installation and clearance adjustment. Trusted in collaborative robots, CNC direct-drive (DD) motors, CT scanners, and surgical robots — where compact design and precision are non-negotiable.
лёгкиеweight Тонкостенная Подшипники скрещенных роликов for Compact Precision Machinery
Luoyang Songju RA series thin-walled подшипник скрещенных роликовs deliver the high жёсткость and multi-directional load capability of подшипник скрещенных роликовs in the lightest, most compact package available. Разъёмная наружное кольцо (two-piece) design combined with a one-piece внутреннее кольцо позволяет straightforward installation with adjustable clearance or preload.
With widths of just 8–13mm across the entire bore range (50–200mm), the RA series достигает dramatic weight reduction compared to standard подшипник скрещенных роликовs — critical for collaborative robot arms where reduced joint mass directly улучшает payload-to-weight ratio, energy efficiency, and safety in human-robot collaboration scenarios.
Доступно в P5 (ABEC-5), P4 (ABEC-7), and P2 (ABEC-9) класс точностиs from подшипниковая сталь GCr15. Standard type (open) and sealed type (suffix UU) configurations are available. The RAU sub-series предлагает the same dimensions with an integrated inner/наружное кольцо structure for applications requiring non-separable ring handling.
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RA Series — Тонкостенная Crossed Roller Bearing Model Параметры
Полный список стандартных моделей for RA series thin-walled подшипник скрещенных роликовs. Corresponding CRBS (IKO) model numbers provided for cross-reference. RAU series имеет integrated (non-separable) rings with same dimensions.
| Bearing Model | d (mm) | D (mm) | B (mm) | Cr (kN) | C0r (kN) | Масса (кг) |
|---|---|---|---|---|---|---|
| RA 5008 (CRBS 508) | 50 | 66 | 8 | 5.1 | 7.19 | 0.08 |
| RA 6008 (CRBS 608) | 60 | 76 | 8 | 5.68 | 8.68 | 0.09 |
| RA 7008 (CRBS 708) | 70 | 86 | 8 | 5.98 | 9.8 | 0.1 |
| RA 8008 (CRBS 808) | 80 | 96 | 8 | 6.37 | 11.3 | 0.11 |
| RA 9008 (CRBS 908) | 90 | 106 | 8 | 6.76 | 12.4 | 0.12 |
| RA 10008 (CRBS 1008) | 100 | 116 | 8 | 7.15 | 13.9 | 0.15 |
| RA 11008 (CRBS 1108) | 110 | 126 | 8 | 7.45 | 15.0 | 0.16 |
| RA 12008 (CRBS 1208) | 120 | 136 | 8 | 7.84 | 16.5 | 0.18 |
| RA 13008 (CRBS 1308) | 130 | 146 | 8 | 7.94 | 17.6 | 0.19 |
| RA 14008 (CRBS 1408) | 140 | 156 | 8 | 8.33 | 19.1 | 0.21 |
| RA 15008 (CRBS 1508) | 150 | 166 | 8 | 8.82 | 20.6 | 0.22 |
| RA 16013 (CRBS 16013) | 160 | 186 | 13 | 23.3 | 44.9 | 0.62 |
| RA 17013 (CRBS 17013) | 170 | 196 | 13 | 23.5 | 46.5 | 0.68 |
| RA 18013 (CRBS 18013) | 180 | 206 | 13 | 24.5 | 49.8 | 0.71 |
| RA 19013 (CRBS 19013) | 190 | 216 | 13 | 24.9 | 51.5 | 0.74 |
| RA 20013 (CRBS 20013) | 200 | 226 | 13 | 25.8 | 54.7 | 0.78 |
Все модели доступны с P5, P4, and P2 класс точностиs. IKO equivalent: CRBS series. RAU = integrated ring type (same dimensions). Suffix UU = double sealed. Suffix C1 = specified clearance. Custom lightweight materials and specialty coatings available for medical and aerospace applications.
Почему выбирают Luoyang Songju RA Тонкостенная Подшипники скрещенных роликов
Maximum жёсткость in the lightest possible package — engineered for collaborative robotics and medical devices
Ultra-лёгкиеweight Design
Weighing as little as 0.08 kg (RA 5008), the RA series достигает dramatic weight savings over standard подшипник скрещенных роликовs. Every gram saved at the сочленение робота translates to higher payгрузоподъёмность, faster cycle times, and reduced motor power requirements.
Тонкостенная Profile
Width of just 8mm for bore range 50–150mm and 13mm for bore range 160–200mm. The ultra-thin wall design minimizes the bearing's contribution to overall mechanism size — enabling compact, elegant machine designs.
Разъёмное наружное кольцо
The two-piece наружное кольцо design allows easy installation and fine adjustment of internal clearance or preload. Achieve zero-clearance or preloaded operation for maximum positioning accuracy in precision motion systems.
Collaborative Robot Ready
RA серии are specified by ходing cobot manufacturers worldwide. The combination of light weight, high жёсткость, and smooth motion directly поддерживает the safety, precision, and energy efficiency requirements of ISO/TS 15066 collaborative robot applications.
Premium GCr15 Steel
Rings прецизионно шлифованная from вакуумно-дегазированная GCr15 (100Cr6 / 52100) подшипниковая сталь. Consistent hardness (58–64 HRC) and controlled retained austenite ensure dimensional stability throughout the bearing's срок службы under varying load and temperature conditions.
RAU Integrated Alternative
The RAU sub-series предлагает identical dimensions with an integrated (non-separable) ring structure. Choose RA for adjustable clearance applications, RAU for simplified handling where pre-set clearance is acceptable. Both share the same mounting envelope.
Отрасли и применения for RA Series Тонкостенная Подшипники скрещенных роликов
RA Series подшипник скрещенных роликовs are trusted across a wide range of precision industries worldwide.
Collaborative Robots (Cobots)
RA series is the dominant подшипник скрещенных роликов in collaborative сочленение роботаs. лёгкие weight улучшает payload-to-weight ratio and снижает collision energy for safer human-robot interaction. 8mm width series covers the most common cobot joint sizes (50–150mm bore).
Прямой привод (DD) Motors
Thin-walled design интегрирует seamlessly into DD motor корпусs for CNC поворотный столs and precision indexing systems. High жёсткость поддерживает the тяжёлое резание loads typical of direct-drive machine tool applications.
CT Scanners & Medical Imaging
Smooth, silent rotation with minimal torque variation — essential for CT gantry rotation where image quality depends on precise, vibration-free motion. Закрытый (UU) variants prevent grease migration in clinical environments.
Surgical Robots
The combination of compact size, light weight, and high precision makes RA series the preferred choice for surgical сочленение роботаs. P2 grade bearings deliver the sub-arcminute positioning accuracy required for minimally invasive procedures.
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