Description

Technical Product Specification: CY3B Series Magnetically Coupled Rodless Cylinder

The CY3B Series is a high-performance, basic-type magnetically coupled rodless cylinder designed for space-saving automation. It features an improved design that enhances durability, reduces sliding resistance, and minimizes overall weight for modern industrial applications.

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1. Key Engineering Features

Enhanced Durability: The wear ring length is increased by 70%, significantly improving bearing performance compared to earlier models.
Integrated Lubrication: A special resin lubretainer is installed on the dust seal to maintain ideal lubrication on the external surface of the cylinder tube.
Low-Pressure Operation: Due to the lubretainer, the minimum operating pressure is reduced by 30%.
Lightweight Construction: Body weight has been reduced by approximately 10% (specifically for ø50 and ø63 models) by optimizing the cylinder tube’s outer diameter.
Non-Contact Design: The magnetically coupled design eliminates the need for mechanical connections through the cylinder wall, ensuring a leak-free environment.

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2. Technical Specifications

Feature	Specification Details	Source
Bore Sizes (mm)	ø6, ø10, ø15, ø20, ø25, ø32, ø40, ø50, ø63
Fluid	Compressed Air
Action	Double Acting
Proof Pressure	1.05 MPa
Max. Operating Pressure	0.7 MPa
Min. Operating Pressure	0.12 to 0.16 MPa (varies by bore size)
Ambient & Fluid Temp.	–10 to 60°C (No freezing)
Piston Speed	50 to 500 mm/s
Cushion Type	Rubber Bumper
Lubrication	Non-lube (Factory pre-lubricated)
Stroke Tolerance	0–250st: +1.0mm; 251–1000st: +1.4mm; 1001st+: +1.8mm
Mounting Orientation	Horizontal, Inclined, Vertical

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3. Magnet Holding Force and Stroke Capacity

The magnetic coupling determines the allowable load and driving force. Operating beyond these limits may result in the magnetic coupling breaking or slipping.

Bore Size (mm)	Magnet Holding Force (N)	Max. Available Stroke (mm)	Port Size (Rc/NPT/G)
ø6	19.6	300	M3 x 0.5
ø10	53.9	500	M5 x 0.8
ø15	137	1000	M5 x 0.8
ø20	231	1500	1/8″
ø25	363	3000	1/8″
ø32	588	5000	1/8″
ø40	922	5000	1/4″
ø50	1471	3000	1/4″
ø63	2256	3000	1/4″

(Note: Intermediate strokes are available in 1 mm intervals.)

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4. Material Composition

Component	Material	Notes
Body / Head Cover	Aluminum Alloy	Hard Anodized
Cylinder Tube	Stainless Steel	High Precision
Piston / Shaft	Stainless Steel / Rolled Steel
Magnets	Rare Earth / Sintered	High holding force
Seals / Gaskets	NBR
Wear Ring	Special Resin
Bumper	Urethane Rubber

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5. Design and Application Precautions

External Guiding: The CY3B series does not have an integrated guide. It must be guided by an external axis, such as a linear guide, to prevent lateral loads and rotation of the external slider.
Deflection Management: Longer strokes increase the deflection of the cylinder tube due to its own weight. Mounting brackets and clearances (typically 0.2 to 0.5 mm) must be calculated to assimilate this deflection.
Vertical Operation: When operating vertically, ensure the load does not exceed the allowable vertical mass (e.g., 18.5 kg for ø25) to prevent the magnetic coupling from breaking and dropping the load.
Intermediate Stops: If stopping mid-stroke via an external stopper, operating pressure must remain within specified limits (e.g., 0.65 MPa for ø15–ø63) to avoid decoupling. Intermediate stops using pneumatic circuits are not permitted in vertical orientations.
Magnetic Caution: The attractive power of the internal and external magnets is extremely strong. Exercise caution during disassembly to prevent injury or damage to the magnetic components