By conforming to the standard cylinder dimensions of ISO 15552, these units allow engineering teams to drop advanced electric control straight into legacy physical machine layouts. This comprehensive guide outlines the critical structural parameters and internal components that govern the EMC and EMC-HP (High Performance) product series. [1, 2, 3]
1. Core Internal Drive Systems
The heart of the Rexroth EMC structure dictates its dynamic force limits, torque conversion thresholds, and accuracy: [1, 2]
- Precision Ball Screw Assemblies (BASA): Found in standard EMC (Sizes 32 to 100) models. They convert rotary motor torque into linear piston movement with high mechanical efficiency and minimal friction. [1, 2, 3]
- Planetary Screw Assemblies (PLSA): Integrated into the heavy-duty EMC-HP (Sizes 60 and 75) modules. These systems handle massive axial stress spikes and provide high force density. [1, 3]
- Anti-Rotation Guidance: Internal mechanics ensure both the screw drive nut and the main piston rod are guided rigidly inside the housing. They cannot twist during extension or retraction. [1, 2, 3]
2. Key Mechanical Parameters Matrix
+------------------------------------+-------------------------------------------+
| Structural Dimension / Metric | Operational Engineering Limits | +------------------------------------+-------------------------------------------+
| Scalable Stroke Lengths | Custom lengths configurable up to 1,500 mm| | Maximum Thrust / Axial Force | Spans up to 250 kN on heavy-duty HP models| | Max Dynamic Load Capacity (Cdyn) | Reaches up to 473 kN for fatigue life | | Maximum Travel Linear Velocity | Blazing speeds touching up to 0.83 m/s | +------------------------------------+-------------------------------------------+
3. Housing and Environmental Protection Classes
To survive harsh manufacturing plant conditions, the external body shell is heavily protected against dust, coolants, and water sprays: [1, 2]
- Anodized Aluminum Profiles: The main outer housing features an integrated aluminum extrusion complete with flush-fitting T-slots to easily tuck away proximity limit switches and reference encoders. [1, 2]
- Stainless Steel Piston Rods: Ground to a mirror finish to glide seamlessly through specialized dual-lip scraping seals without degrading the sealing lip over long lifespans. [1, 2]
- IP Protection Scaling: Base cylinder structures feature IP54 safety profiles on the moving piston. Upgraded models push the structural housing up to IP65 ratings, making them completely impermeable to airborne particulate dust and directional fluid blasts. [1]
4. Flexible Motor Mounting Layouts
Rexroth allows machine builders to alter the cylinder drive journal configurations on the fly to save physical clearance space: [1, 2]
- Direct Axial Mounting (Linear Mount): The motor attaches straight behind the cylinder cylinder base using a custom adapter flange and low-backlash coupling. Excellent for narrow, long machine bays.
- Timing Belt Side Drives (Parallel Mount): The servo motor is folded 180 degrees backward and runs parallel alongside the main cylinder tube. Power transfers via an internal, high-tension steel-reinforced timing belt, saving valuable longitudinal workspace footprint. [1, 2]
Sizing and Sourcing Your Cylinders Digitally
Because structural parameters change depending on your exact stroke, duty cycle, and parallel loading risks, it is highly recommended to configure your parts using the official digital tools: [1]
- Launch the Linear Motion Technology Selector (LinSelect) to plug in your payload mass, required push force, and ambient dust risks to automatically choose between standard ball screw or high-force planetary drive internals.
- Evaluate structural buckling safety margins and check the calculated continuous lubrication service life thresholds (which can reach up to a massive 15,000 km) inside the Linear Motion Designer (LMD) platform before ordering. [1, 2, 3]
SEO Meta Data (For Website Implementation)
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Rexroth electromechanical cylinder structural parameters - Secondary Keywords:
Bosch Rexroth EMC sizes,planetary screw assemblies,EMC-HP linear actuator,ISO 15552 electric cylinder,linear motion technology selector. - Meta Description: Explore the key structural parameters of Bosch Rexroth electromechanical cylinders (EMC). Learn about ISO 15552 sizing, thrust limits, and IP65 protections. [1]
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