Magnetically Coupled Rodless Cylinder RMT – Providing Advanced Manufacturing Solutions for the Global Industry

Description

RMT Series: Guided Rodless Cylinder (Magnetically Coupled)

High-Precision Linear Motion with Integrated Dual Guides

The RMT Series is a high-performance, magnetically coupled pneumatic rodless cylinder designed for applications where space efficiency and high-load precision are critical. By utilizing a mobile internal piston fitted with annular magnets to drive an external carriage, this series provides a completely leak-proof and compact design. The integrated dual guides ensure superior linearity and high resistance to side or offset loads.

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Technical Specifications

Feature	Specification Details	Source
Bore Sizes (mm)	16, 20, 25, 32, 40
Action Type	Double Acting
Fluid	Air (filtered by 40μm filter element)
Operating Pressure	ø16: 0.20.7MPa (30100psi) <br> ø20-40: 0.250.7MPa (36100psi)
Proof Pressure	1.2 MPa (175 psi)
Ambient & Fluid Temp.	-20°C to 70°C
Speed Range	50 to 400 mm/s
Stroke Tolerance	0250st: 0+1.0​ mm; 2511000st: 0+1.5​ mm; 1001st+: 0+2.0​ mm
Port Size	M5×0.8 (ø16); 1/8″ (ø20/25/32); 1/4″ (ø40)

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Performance and Holding Force

The magnetic coupling determines the safe holding force required to maintain the connection between the piston and the carriage during movement.

Bore Size (mm)	Safe Holding Force (N)	Max. Load W (kg)	Max. Standard Stroke (mm)	Source
16	140	5.6	750	,
20	220	9.6	1000	,
25	345	16.0	1500	,
32	560	24.0	1500	,
40	880	40.0	1500	,

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Key Engineering Features

• Integrated Cushioning System: Standard models include non-adjustable rubber bumpers and adjustable pneumatic cushioning at both ends for smooth deceleration. For high-impact applications, optional shock absorbers (ACA series) are available to provide perfect cushioning.
• Dust-Proof Construction: The physical isolation between the carriage and the internal piston ensures the mechanism remains protected from environmental contaminants.
• High Load Rigidity: The dual-guide design is specifically engineered to handle offset loads. For optimal performance, the loading center and the slide table center must be superposed.
• Sensor Integration: The cylinder body includes integrated mounting holes for sensor switch rails, compatible with CMSG, DMSG, and EMSG series switches for position detection.

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Component Materials

(Based on Internal Structure)

No.	Component	Material	Source
3	Cylinder Barrel	Stainless Steel
6, 19	Magnets	Rare-earth permanent magnets
9	Wear Ring	Special wear-resistant resin
11, 31	Bumpers	High-durability elastomer
30	Guides	Precision-ground steel rails

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Installation & Maintenance Guidelines

1. Workpiece Selection: To ensure maximum operational life, it is recommended to use non-magnetically conductive materials for workpieces. Using magnetically conductive materials may halve the product’s lifespan.
2. Load-Velocity Management: Engineers should consult the horizontal and vertical load-velocity charts to select the appropriate bore size based on required load (W) and moving velocity (V).
3. Shock Absorber Maintenance: Shock absorbers are considered consumable parts. They must be replaced when a decrease in energy absorption capacity is noticed. Use specific tightening torques (e.g., 3.14 Nm for ø25; 10.80 Nm for ø40) during installation.
4. Thread Standards: Standard ports are Metric for ø16; NPT and G threads are available for North American and European standard compliance