SMC CRB2BW40-180SZ Rotating Cylinder CRB2BW40180SZ
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SMC CRB2BW40-180SZ Rotating Cylinder (CRB2BW40180SZ)
1. Product Overview
The SMC CRB2BW40-180SZ (also designated as CRB2BW40180SZ) is a high-precision rotating cylinder from SMC’s CRB2 series, a flagship line of compact swing cylinders designed for industrial automation. As a double-acting rack-and-pinion driven actuator, it features a 40 mm bore diameter and a standard 180° swing angle, delivering stable torque output for tasks such as workpiece flipping, part indexing, precision clamping, and automated positioning. Its compact structure, paired with a double-shaft design and versatile mounting options, makes it ideal for space-constrained applications in electronic manufacturing, automotive assembly, packaging machinery, and robotic workstations. Adhering to SMC’s strict quality standards, the CRB2BW40-180SZ ensures minimal backlash, low operational noise, and reliable long-term performance, seamlessly integrating with standard pneumatic control systems.
2. Main Functions
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Function
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Detailed Description
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180° Precision Swing Motion
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Driven by a precision rack-and-pinion mechanism, it delivers consistent 180° rotational motion with adjustable angle range (±5°), ensuring high positioning accuracy and minimal backlash.
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Double-Acting Operation
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Converts pneumatic pressure into bidirectional rotational force (clockwise and counterclockwise), supporting automated cycle operations via solenoid valves and PLC control systems.
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Dual-Shaft Output
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Features double output shafts (designated by “W” in the model) for flexible connection to mechanical components, enabling symmetric force transmission and versatile application configurations.
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Built-In Cushioning
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Equipped with non-adjustable pad cushions at both limit positions (0° and 180°) to absorb impact, reduce vibration, and prevent component damage during rapid stops.
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Magnetic Position Feedback
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Integrated magnetic ring in the piston enables installation of magnetic proximity sensors, providing real-time rotational position feedback for closed-loop control and system synchronization.
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3. Technical Features
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Precision Rack-and-Pinion Drive: Adopts high-strength carbon steel gears and dual racks to eliminate tooth gap, ensuring smooth rotational motion with repeatability accuracy of ±0.5°.
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Durable Construction: Cylinder barrel made of hard-anodized aluminum alloy for wear and corrosion resistance; stainless steel (SUS304) output shafts with chrome plating enhance durability and load-bearing capacity.
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Reliable Sealing System: Double NBR rubber seals prevent air leakage, maintaining stable pressure and consistent performance at maximum operating pressure, with optional Viton seals for high-temperature environments.
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Broad Operating Range: Functions reliably at 0.15–1.0 MPa air pressure and -10°C to 60°C ambient temperature, adapting to typical industrial working conditions with relative humidity ≤85%.
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Oil-Free Operation: Designed for maintenance-free, oil-free lubrication, reducing operational costs and making it suitable for clean environments like electronic component assembly.
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Multi-Orientation Mounting: Supports front, rear, and side mounting via standardized holes, adapting to horizontal, vertical, and inclined installation orientations in compact spaces.
4. Product Dimensions (Unit: mm)
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Dimension Parameter
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Value (mm)
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Bore Diameter
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40
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Standard Swing Angle
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180° (±5° adjustable)
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Output Shaft Diameter
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12 (each shaft)
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Overall Length
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148
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Overall Width
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62
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Overall Height
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78
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Air Port Size
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M5 x 0.8 (Female Thread)
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Shaft Thread Specification
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M6 x 1.0 (each shaft)
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5. Weight and Material Specifications
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Component
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Material
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Weight (g)
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Cylinder Barrel
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Hard-Anodized Aluminum Alloy
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280
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Front/Rear End Caps
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Aluminum Alloy
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120
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Output Shafts & Gears
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Stainless Steel & Carbon Steel
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95
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Piston & Racks
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Aluminum Alloy & Carbon Steel
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65
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Seals & Gaskets
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NBR Rubber
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15
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Total Weight
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–
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575
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6. Performance Parameters
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Parameter
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Value
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Maximum Operating Pressure
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1.0 MPa
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Minimum Operating Pressure
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0.15 MPa
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Maximum Torque Output (at 0.5 MPa)
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8.5 N·m
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Swing Time (at 0.5 MPa)
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0.3–1.2 s/180°
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Repeatability Accuracy
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±0.5°
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Service Life
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≥5,000,000 Cycles
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Working Fluid
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Filtered Compressed Air (≤5 μm), recommended to use with SMC AF series air filters for optimal performance.
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Allowable Axial Load
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500 N
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WHO WE ARE
About us
Located in Kunshan, China, Atifts Technology Co., Ltd. is a well-known enterprise specializing in electronic components distribution. We specialize in the sales of global brands of industrial automation components, with a wealth of experience in foreign product agents, and many of the world's leading manufacturers such as Keens, Schneider, SMC, ABB, Siemens, and other world-renowned manufacturers to establish a long-term and stable relations of cooperation.
Atifts Technology Co., Ltd. @ 2024
Over the years, we have always adhered to the "pioneering, pragmatic, standardized, innovative" management philosophy, and constantly promote the close integration of products and market demand. We firmly believe that only by constantly exploring new market areas, doing a good job in every detail, standardizing business processes, and continuously innovating products and services can we ensure that our products are more adaptable to market changes and meet the diversified needs of our customers.
Since the founding of the company, we have always adhered to the core concept of "survival by quality", and are committed to providing customers with high-quality electronic components. At the same time, we take specialized R & D manufacturing as the goal, market-oriented development strategy to ensure that our products are always in the forefront of the industry.
With excellent product quality, professional technical service and good market reputation, Kunshan Autofits Technology Co.,Ltd. has won the trust and support of our customers. We look forward to working with more partners hand in hand, to achieve long-term win-win relationship, and jointly promote the prosperity of the electronic components industry.
Where is your company located?
We are located next to Shanghai, the largest city in China, and Kunshan, the first economic county in China. With convenient transportation and developed logistics, it provides a good geographical advantage for our electronic components sales business.
What types of electronic components does your company mainly sell?
We are committed to providing many types and brands of electronic components, including but not limited to Sensors, Switches & Relays, Connectors, Circuit Protectio, Power Supplier & Cable, etc. We have established relationships with many well-known electronic component manufacturers. We have established long-term and stable relationships with many well-known electronic component manufacturers to ensure that the products we sell are of reliable quality and reasonable price.
What are the prices of your products?
Our product prices vary according to market conditions and product models. We are committed to providing high quality electronic components at fair and reasonable prices, and offer our customers a variety of incentives and flexible purchasing methods.
How to purchase your electronic components?
You can contact our customer service staff directly by phone, whatsapp, email, our official website. We support a variety of payment methods, and provide you with fast and safe logistics and distribution services.
How do you guarantee the quality of your products?
We attach great importance to product quality, all the electronic components we sell come from regular channels and undergo strict quality testing. We promise to provide customers with high-quality electronic components, and provide perfect after-sales service to ensure that customers have no worries in the process of use.
If I am not satisfied with the electronic components I purchased, can I return them?
We provide perfect after-sales service, if you are not satisfied with the purchased electronic components, you can return or exchange them within the specified time. Please refer to our official website or consult our customer service staff for the specific return policy and process.
Can your company provide technical support and solutions?
We have a professional technical team that can provide technical support and solutions for our customers. Whether you encounter any problems in choosing or using the products, we will be happy to answer your questions and provide professional technical support.
How to contact your customer service?
You can contact our customer service personnel through the online customer service system on our official website, telephone, e-mail or social media platforms. Our customer service staff will provide you with professional services and answer any questions you may have.
Does your company often organize promotional activities?
In order to give back to our customers, we will organize various promotions from time to time, including discounts, full reductions, giveaways and so on. Please keep an eye on our official website or social media platforms to stay up-to-date with the latest promotions.
