RU Series
Интегрированное крепление Подшипники скрещенных роликов
10–350mm Bore | Pre-Drilled Монтажные отверстия | No Flange Нужныed | P5/P4/P2 Grade
The RU series (IKO equivalent: CRBF) имеет pre-drilled and counterbored монтажные отверстия on both inner and наружное кольцоs — eliminating the need for separate фланецs, presser plates, or custom корпусs. Simply bolt the bearing directly into your assembly. The preferred choice for harmonic drive reducers, robot base joints, and direct-drive motor integrations.
Ready-to-Mount Подшипники скрещенных роликов with Integrated Bolt Holes for Simplified Assembly
Luoyang Songju RU series (IKO CRBF equivalent) подшипник скрещенных роликовs are the ultimate "bolt-on" solution — featuring precision-drilled and counterbored монтажные отверстия on both inner and наружное кольцоs. This устраняет the engineering, machining, and assembly time required for separate фланецs, presser фланецs, or custom корпусs — significantly reducing total system cost and ход time.
The integrated inner/наружное кольцо structure гарантирует high жёсткость and stable rotational accuracy without the need for post-installation clearance adjustment. POM plastic сепараторs between each cylindrical roller enable smooth, low-friction rotation suitable for непрерывный applications. The pre-drilled hole pattern is standardized across each size, ensuring compatibility with industry-standard harmonic reducer and сочленение робота interfaces.
Доступно в P5, P4, and P2 класс точностиs from подшипниковая сталь GCr15. Standard models (AT suffix) are open type; sealed models (AT UU suffix) feature dual synthetic rubber seals. The series covers размер отверстияs from 10mm to 350mm, corresponding to THK RU and IKO CRBF mounting patterns for harmonic drive applications from size 14 through 45.
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RU Series — Интегрированное крепление Crossed Roller Bearing Model Параметры
Полный список стандартных моделей for RU series integrated mount подшипник скрещенных роликовs. IKO equivalent: CRBF series. THK equivalent: RU series. All models include pre-drilled монтажные отверстия on both rings.
| Bearing Model | d (mm) | D (mm) | B (mm) | Cr (kN) | C0r (kN) | Масса (кг) |
|---|---|---|---|---|---|---|
| RU 42 (CRBF 108) | 10 | 52 | 8 | 2.91 | 2.43 | 0.12 |
| RU 66 (CRBF 2012) | 20 | 70 | 12 | 7.6 | 8.37 | 0.31 |
| RU 85 (CRBF 2512) | 25 | 80 | 12 | 8.61 | 10.6 | 0.4 |
| RU 124 (CRBF 3515) | 35 | 95 | 15 | 17.3 | 20.9 | 0.66 |
| RU 148 (CRBF 5515) | 55 | 120 | 15 | 20.1 | 27.7 | 0.96 |
| RU 178 (CRBF 8022) | 80 | 165 | 22 | 51.1 | 72.0 | 2.63 |
| RU 228 (CRBF 9025) | 90 | 210 | 25 | 52.4 | 77.4 | 3.5 |
| RU 297 (CRBF 11528) | 115 | 240 | 28 | 73.4 | 108.0 | 4.8 |
| RU 350 (CRBF 16035) | 160 | 295 | 35 | 114.0 | 200.0 | 8.5 |
| RU 445 (CRBF 21040) | 210 | 380 | 40 | 183.0 | 367.0 | 15.0 |
| RU 550 (CRBF 35045) | 350 | 540 | 45 | 241.0 | 531.0 | 28.0 |
Все модели доступны с P5, P4, and P2 класс точностиs. IKO equivalent: CRBF series. THK equivalent: RU series. Standard: подшипниковая сталь GCr15, POM сепараторs, pre-drilled монтажные отверстия. Suffix AT = open type. Suffix AT UU = double sealed. 3D CAD models available upon request.
Почему выбирают Luoyang Songju RU Series Интегрированное крепление Подшипники скрещенных роликов
Bolt-on simplicity — pre-drilled монтажные отверстия eliminate фланец design, machining, and assembly time
Pre-Drilled Монтажные отверстия — Ready to Bolt On
Both inner and наружное кольцоs feature precision-drilled, counterbored монтажные отверстия in standardized patterns. Устраняет необходимость в separate presser фланецs, custom корпусs, or post-installation machining — reducing total assembly cost and engineering ход time.
Integrated Ring Structure — No Adjustment Нужныed
The one-piece inner and наружное кольцо construction поддерживает optimal preload and clearance as manufactured. No post-installation clearance adjustment required — simply bolt in place and achieve specified rotational accuracy immediately.
Bi-Directional Rotation Support
Pre-drilled holes on both rings enable flexible mounting: either ring can serve as the rotating element. This symmetry makes RU bearings ideal for both inner-ring-rotation (e.g., robot base joints) and outer-ring-rotation (e.g., harmonic drive output фланецs) applications.
Harmonic Reducer Standard Interface
RU bearing sizes directly correspond to harmonic drive reducer frame sizes: RU 42 (size 14), RU 66 (size 17), RU 85 (size 20), RU 124 (size 25), RU 148 (size 32), RU 178 (size 40), RU 228 (size 45). Drop-in compatible with major harmonic drive brands.
Открытый & Закрытый Configurations
Standard AT type (open) for oil-bath or смазка пластичной смазкой with external sealing. AT UU type with dual synthetic rubber seals for grease retention and contamination exclusion. Operating temperature range: -20°C to +110°C (sealed type).
CAD Data Available
3D CAD models (STEP, IGES) and 2D drawings (PDF, DWG) available for all standard RU sizes. Speed your design process with ready-to-integrate mounting geometry — contact our engineering team for download access.
Отрасли и применения for RU Series Интегрированное крепление Подшипники скрещенных роликов
RU Series подшипник скрещенных роликовs are trusted across a wide range of precision industries worldwide.
Harmonic Drive & Cycloidal Reducers
RU bearings are the de facto standard output bearing for harmonic drive reducers. Integrated монтажные отверстия directly interface with the flexspline and circular spline bolt patterns — eliminating custom bearing корпус design for reducer manufacturers and robot OEMs.
Robot Base & Shoulder Joints
Large RU bearings (RU 178–550) serve as the primary rotary bearing in robot base joints, shoulder pivots, and heavy-payload cobot arms. The bolt-on design упрощает сочленение робота structure and снижает assembly part count by 30–50% versus traditional фланецd bearing arrangements.
Direct-Drive Rotary Motors
RU bearings integrate seamlessly into DD motor корпусs for CNC rotary axes, semiconductor wafer stages, and precision inspection turntables. Pre-drilled holes align with standard DD motor mounting patterns for plug-and-play integration.
Antenna & Optical Pedestals
Military and commercial antenna pedestals, optical tracking mounts, and LIDAR platforms. RU bearings provide the rigid, low-profile rotary interface needed for precision azimuth/elevation positioning in harsh outdoor and mobile environments.
Нужны RU Series Интегрированное крепление Подшипники скрещенных роликов?
Tell us your размер отверстия, класс точности, seal preference, bolt hole pattern requirement, and quantity. Наши инженеры ответят within 24 hours with a quotation and CAD data.