close
Choose Your Site
Global
Social Media
The MR923 Miniature Radial Ball Bearing is a high-precision, single-row bearing engineered for compact, high-speed applications requiring low noise and smooth rotation. It delivers reliable performance in micro-motors, robotics, and medical instruments.
| Quantity: | |
|---|---|
The MR923 Miniature Radial Ball Bearing is meticulously crafted to address the rigorous demands of modern micro-mechanical engineering. When integrated into your assemblies, the first thing you will notice is the absolute silence and lack of vibration—a direct result of our stringent Z1 and Z2 noise level controls and optimized raceway geometry. This component feels substantial despite its miniature footprint, a testament to the premium GCr15 chrome steel or corrosion-resistant stainless steel utilized in its precise construction.
By replacing standard, off-the-shelf alternatives with this precision-engineered bearing, equipment manufacturers can drastically reduce maintenance intervals and eliminate the micro-jitters that often plague sensitive robotics and medical instruments. The flawless surface finish of the inner and outer rings guarantees a seamless fit onto 11mm shafts and within 23mm housings, streamlining your assembly line process. With advanced heat-treatment protocols enhancing fatigue resistance, this bearing operates flawlessly under continuous load, ensuring your end-products maintain peak operational efficiency even in the most demanding, high-RPM environments.
Parameter | Value | Description |
Bearing Model | MR923 | Miniature Radial Ball Bearing |
Inner Diameter (d) | 11 mm | Shaft diameter |
Outer Diameter (D) | 23 mm | Housing bore diameter |
Width (B) | 8 mm | Bearing width |
Chamfer (r min) | 0.25 mm | Minimum chamfer size |
Item | Specification |
Bearing Structure | Single-row miniature ball bearing |
Precision Grades | ABEC-1 / ABEC-3 / ABEC-5 |
Noise Level | Z1 / Z2 |
Seal / Shield Options | Open / ZZ / 2RS |
Material | GCr15 bearing steel / Stainless steel |
Cage Material | Steel cage / Polyamide cage |
Lubrication | Pre-greased or oil |
Operating Temperature | -20°C to +120°C |
Load Type | Value |
Dynamic Load Rating (Cr) | Approx. 1.80 kN |
Static Load Rating (Cor) | Approx. 0.85 kN |
Reference values; actual ratings may vary depending on bearing clearance, lubrication, and operating conditions.
Bearing Version | Limiting Speed |
Open Type | ~34,000 RPM |
Metal Shield (ZZ) | ~27,000 RPM |
| Rubber Seal (2RS) | ~19,000 RPM |
Engineered to elevate the operational standards of your machinery, the MR923 bearing combines meticulous craftsmanship with robust material science. Every unit is designed to solve common friction and wear issues, ensuring your equipment runs smoother and lasts longer.
Frictionless Operation: The highly polished raceways and perfectly matched ball bearings minimize rolling resistance, translating to lower energy consumption and reduced heat generation in your motors.
Versatile Environmental Protection: Choose the exact level of defense your application requires. Our tight-fitting rubber seals keep invasive dust and moisture out, while metal shields provide excellent defense against larger debris without sacrificing speed.
Thermal Stability: Formulated to perform flawlessly in extreme conditions, this bearing maintains its structural integrity and rotational fluidity in temperatures ranging from -20°C to a blistering +120°C.
Extended Fatigue Life: Deep hardening processes applied to the GCr15 steel ensure that the bearing withstands repetitive stress cycles, vastly reducing the frequency of part replacements and associated downtime.
Our MR923 bearing series is engineered across multiple dimensions to provide a comprehensive solution for precision-driven industries. Below is a detailed breakdown of how this component enhances your specific operational requirements.
Adhering to a strict 11x23x8mm standard miniature profile, this bearing offers multiple precision tiers from ABEC-1 up to ABEC-5. The optimized ball and raceway geometry ensures an exceptionally even load distribution. This precise matching is crucial for micro-devices where even microscopic deviations can lead to systemic failure, guaranteeing a flawless fit and frictionless integration.
To combat premature wear in high-stress micro-applications, we offer two premium material pathways: high-grade GCr15 chrome steel and corrosion-resistant stainless steel. Both materials undergo specialized thermal treatments that significantly elevate their fatigue resistance. This commitment to metallurgical excellence ensures a prolonged operational lifespan, protecting your equipment from unexpected breakdowns.
Balancing environmental protection with rotational velocity is effortless with our three distinct variants. The Open type pushes the limits at 34,000 RPM for pure speed. The ZZ metal shield variant offers a robust 27,000 RPM while deflecting particulates. For environments prone to moisture and fine dust, the 2RS rubber seal variant delivers superior ingress protection while maintaining a solid 19,000 RPM, allowing you to tailor the bearing precisely to your operational hazards.
Acoustic and vibrational anomalies are strictly mitigated through our rigorous Z1 and Z2 noise classification protocols. By ensuring the bearing operates with near-silent fluidity at high velocities, it becomes the ideal foundation for miniature motors and precision instruments where rotational stability is non-negotiable.
Purpose-built for spatial constraints without compromising on velocity, this bearing is a proven asset across multiple sophisticated sectors. It is seamlessly integrated into micro servo motors, the intricate joints of precision robotics, sensitive medical and laboratory diagnostics equipment, automated office machinery, and high-end consumer electronics featuring rapid rotational elements.
We empower your brand with highly flexible customization frameworks. Adjust the internal clearance (C0/C2/C3) to match your thermal expansion needs, or specify specialized lubrication (high-speed, long-life, or high-temperature greases). Furthermore, we support your brand identity with custom laser marking and tailored packaging, delivering a truly bespoke component for your manufacturing line.
Procuring directly from the manufacturing source guarantees not only stringent multi-stage quality control but also unparalleled consistency in dimensions and performance. We provide a highly reliable delivery schedule that fortifies your supply chain. Whether you are managing medium-volume production runs, OEM integrations, or stocking industrial aftermarket inventories, our pricing structure delivers a commanding competitive edge.
Partnering with a reliable component manufacturer is critical to the success of your final product. We bring decades of engineering expertise and a relentless commitment to quality assurance, ensuring that every bearing you receive meets the highest global standards.
Stringent Quality Assurance: Every batch undergoes rigorous acoustic, dimensional, and rotational testing before leaving our facility, guaranteeing zero-defect integration into your assembly lines.
Scalable Production Capacity: From initial prototyping samples to full-scale volume manufacturing, our agile production lines are equipped to scale alongside your procurement demands without extending lead times.
Expert Engineering Support: Our technical team provides comprehensive consultation, assisting your engineers in selecting the optimal clearance, lubrication, and sealing options for your specific use case.
Global Logistics Reliability: We understand that manufacturing delays are costly. Our optimized logistics networks ensure that your components arrive exactly when needed, keeping your production schedules firmly on track.
To assist your procurement and engineering teams in making an informed decision, we have compiled answers to the most common technical inquiries regarding the MR923 bearing series.
What is the difference between the MR923ZZ and MR923-2RS variants?
The MR923ZZ features double metal shields, offering excellent protection against larger debris while allowing for higher speeds (up to 27,000 RPM). The MR923-2RS utilizes double rubber seals, providing superior defense against fine dust and moisture ingress, with a maximum speed of 19,000 RPM.
Can this bearing handle both radial and axial loads?
As a deep groove radial ball bearing, it is primarily designed to support robust radial loads (Dynamic: 1.80 kN, Static: 0.85 kN). However, the deep groove geometry also allows it to accommodate moderate axial loads in both directions.
Are custom lubrication options available for extreme temperatures?
Yes. While standard bearings come pre-lubricated with high-quality general-purpose grease, we offer custom fills including high-temperature, low-torque, and food-grade lubricants tailored to your specific operational environment.
How do I determine if I need ABEC-1, ABEC-3, or ABEC-5 precision?
ABEC-1 is suitable for standard electric motors and general mechanical applications. ABEC-3 offers tighter tolerances for applications requiring lower vibration. ABEC-5 is recommended for ultra-precision equipment, such as medical instruments and robotics, where maximum runout accuracy is critical.
What is the standard internal clearance, and can it be modified?
The standard internal clearance is C0, which is ideal for most room-temperature applications. For environments with significant temperature fluctuations or interference fits, we can manufacture your bearings with C2 (tighter) or C3 (looser) clearances upon request.
