Description

Series RMS: Magnetically Coupled Rodless Cylinder

High-Efficiency Linear Motion with Integrated Magnetic Coupling

The Series RMS is a high-performance pneumatic rodless cylinder designed for space-constrained industrial automation. It utilizes a magnetically coupled design where an internal mobile piston, fitted with annular magnets, drives an external carriage through a high-strength magnetic field. This architecture eliminates the need for mechanical connections through the cylinder wall, ensuring a completely leak-proof and dust-proof operation.

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Technical Specifications

The RMS series is engineered to provide stable performance across a wide range of operating conditions.

Feature	Specification Details	Source
Bore Sizes (mm)	10, 16, 20, 25, 32, 40
Action Type	Double Acting
Fluid	Air (filtered by 40μm element)
Operating Pressure (ø10)	0.2 ~ 0.7 MPa (29 ~ 100 psi)
Operating Pressure (ø16 – ø40)	0.15 ~ 0.7 MPa (22 ~ 100 psi)
Proof Pressure	1.2 MPa (175 psi)
Temperature Range	-20°C to 70°C
Speed Range	50 to 400 mm/s
Cushion Type	Rubber Bumper + Adjustable Pneumatic Cushioning
Stroke Tolerance	+1.0/0 mm (up to 250st) to +2.0/0 mm (over 1001st)

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Key Performance Indicators

1. Safe Holding Force

The magnetic coupling determines the safe driving force before the carriage decouples from the piston.

Bore Size	ø10	ø16	ø20	ø25	ø32	ø40	Source
Force (N)	55	140	220	345	560	880

2. Maximum Loading Capacity

For optimal service life, the mass to move must be less than the theoretical holding force, and radial loads must be strictly managed.

Horizontal Mounting: Max loading table weight ranges from 0.4 kg (ø10) to 2.0 kg (ø40).
Vertical Mounting: Max load weight (Loading table + Load) ranges from 2.2 kg (ø10) to 37 kg (ø40).

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Specialized Middle-Stop Application

When implementing a middle-stop mechanism (using an external stopper), specific parameters must be observed to prevent decoupling and equipment damage.

Max Allowable Working Pressure: Must not exceed 0.55 MPa during middle-stop operations.
Allowable Kinetic Energy (J):
- ø10: 0.03 J
- ø20: 0.24 J
- ø40: 1.53 J

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Core Engineering Advantages

Superior Air-Proof Design: The carriage and piston are physically isolated, making the unit dust-proof and ideal for environments where traditional rod-type cylinders might fail due to seal contamination.
Smooth Motion Control: The combination of non-adjustable rubber bumpers and adjustable pneumatic cushioning at both ends ensures smooth deceleration and impact reduction.
Space-Efficient Mounting: Available in three mounting configurations—Basic type, FA type (Front Flange), and LB type (Foot Bracket)—with a compact profile that saves significant axial space compared to standard cylinders.
Precision Guidance: The carriage slide moves freely along the main tube, supported by high-quality wear-resistant materials for consistent linearity.

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Construction Materials

Component	Material	Notes
Barrel	Stainless Steel	High-precision finish
Body / End Cap	Aluminum Alloy
Magnets	Rare-earth Material	High holding force
Piston / Washer	Aluminum Alloy / Stainless Steel
Seals	TPU / NBR
Wear Ring	Wear-resistant Material

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Installation and Maintenance Guidelines

Air Quality: The compressed air must be filtered to 40μm or below to prevent internal impurities from entering the cylinder.
Workpiece Selection: Non-magnetically conductive materials are recommended for workpieces. If magnetically conductive materials are used, the operational lifetime may be halved.
Intermediate Stops: Use shock absorbers at external stoppers to ensure hitting is smooth and to avoid magnetic decoupling.
Storage: If stored for long periods, apply anti-rust treatment and use anti-dust caps on air ports