Magnetically Coupled Rodless Cylinder RMH: High-Precision Manufacturing Solutions for Global Industry

Description

RMH Series: Precision Rodless Magnetic Cylinder

Magnetically Coupled Design with Integrated Linear Guide Rail

The RMH Series is a high-performance pneumatic rodless cylinder featuring a magnetic coupling mechanism. By utilizing a mobile internal piston fitted with annular magnets to drive an external carriage, this series provides a compact, leak-proof solution for precision linear motion,. The integrated linear slide rail ensures high operational accuracy, prevents body rotation, and significantly enhances load-bearing capacity,.

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Technical Specifications

Feature	Specification Details	Source
Bore Sizes (mm)	10, 16, 20, 25
Action Type	Double Acting
Fluid	Air (filtered by 40μm element)
Operating Pressure	0.2 – 0.7 MPa (28 – 100 psi)
Proof Pressure	1.2 MPa (175 psi)
Operating Temperature	-20°C to 70°C
Speed Range	50 – 400 mm/s
Cushion Type	Bumper (Non-adjustable & adjustable options)
Port Size	M5×0.8 (ø10, ø16); 1/8″ (ø20, ø25)

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Performance & Load Data

1. Safe Holding Force

The magnetic coupling determines the maximum force that can be applied before the carriage decouples from the piston.

Bore Size	Safe Holding Force (N)	Max. Load W (kg)*	Max. Stroke (mm)
ø10	55 N	1.4 – 2.4	300
ø16	140 N	3.0 – 5.0	500
ø20	220 N	3.6 – 6.0	800
ø25	345 N	4.8 – 8.0	800

*Max load varies based on stroke length and loading orientation. Loading center and slide table center must be superposed for optimal performance,.

2. Theoretical Holding Force vs. Pressure

• ø25: ~520 N at 1.0 MPa
• ø20: ~340 N at 1.0 MPa
• ø16: ~210 N at 1.0 MPa
• ø10: ~80 N at 1.0 MPa

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Key Engineering Features

• Integrated Linear Guide: The external carriage travels along a high-precision slide rail, ensuring the body does not rotate and providing strong resistance to moments,.
• Compact & Efficient Mounting: The cylinder body and load can be mounted from two different directions, with all inlet and outlet ports conveniently located on the same side to simplify piping.
• Dual-End Cushioning: Combines non-adjustable rubber bumpers with adjustable pneumatic cushioning to ensure smooth, impact-free operation at stroke ends.
• Dust-Proof Isolation: The design provides effective isolation between the carriage and piston, preventing external contaminants from entering the main tube.
• Sensor Integration: Features a dedicated rail for matching magnetic sensors (Models: CMSH, DMSH, EMSH).

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Construction Materials

Component	Material	Source
End Cover / Body	Aluminum Alloy
Magnets	Rare-earth permanent magnets
Barrel	Stainless Steel
Seals (O-ring / Piston)	NBR / TPU
Linear Rail	Integrated Steel Guide	,

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Operational & Maintenance Guidelines

1. Shock Absorption: For applications requiring higher energy dissipation, standard adjusting screws can be replaced with ACA Series hydraulic shock absorbers (e.g., ACA0806-1 for ø10; ACA1412-1 for ø25).
2. Air Quality: The medium must be filtered to 40μm or below. Ensure pipes are cleared of debris before connection.
3. Workpiece Selection: It is highly recommended to use non-magnetically conductive materials for workpieces. If magnetically conductive materials are used, the operational lifetime may be halved.
4. Storage: If stored for long periods, apply anti-rust treatment to surfaces and ensure anti-dust caps are installed in ports.
5. External Limits: If an external limiter is required for intermediate stops, refer to the RMS series guidelines