The CXSM20-30A is a double-acting cylinder (also known as a double-rod cylinder or guided cylinder) manufactured by SMC's CXS series. It integrates two piston rods with guiding functions into one unit, specifically designed for automated applications requiring linear guidance and torsional resistance, such as pick and place.
This model has a 20mm bore and 30mm stroke, employing a double-acting, double-rod structure. Its output thrust is twice that of a single-rod cylinder of the same bore, and it boasts a non-rotational accuracy of up to ±0.1°. Furthermore, workpieces or accessories can be directly mounted on all three surfaces of the cylinder body without the need for additional guiding mechanisms, resulting in a compact and space-saving design.
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Core Features
- ✓ Double Thrust: The dual-piston rod design delivers twice the thrust of a standard cylinder of the same diameter, resulting in greater output.
- ✓ High Torsional Resistance: Non-rotational accuracy up to ±0.1°, allowing direct resistance to lateral loads without the need for external guide rails.
- ✓ Three-Sided Mounting: Workpieces or accessories can be directly mounted on all three surfaces of the cylinder body, offering high flexibility.
- ✓ Pneumatic Cushioning: Utilizes a pneumatic cushioning system to effectively absorb the impact at the end of the piston's high-speed movement.
Technical Specifications
| Brand |
SMC |
| Model / Part Number |
CXSM20-30A |
| Cylinder bore |
20 mm
|
| stroke |
30 mm |
| Action mode |
Double-acting |
| Operating pressure range |
0.1 MPa ~ 0.7 MPa |
| Ambient/fluid temperature |
-10℃ ~ +60℃ |
| Buffer type |
Air cushioning |
| Hose diameter |
M5 x 0.8 mm |
| Non-rotational accuracy |
±0.1° |
| Theoretical thrust (at 0.5 MPa) |
Forward side: Approx. 314 N (total for both rods) |
Frequently Asked Questions
Q: What are the main application scenarios for the CXSM20-30A?
A: It is best suited for automated pick-and-place scenarios requiring linear push-pull motion and torsional resistance. Typical applications include:
Electronic assembly: Grabbing small PCB boards or components for positioning and assembly.
Inspection equipment: Pushing probes or sensors, requiring smooth, non-rotating movement.
Loading and unloading mechanisms: Picking up and placing workpieces from conveyor belts, using double thrust to clamp or push.
Q: Ordinary cylinders are also labeled with "non-rotational accuracy." What are the advantages of the CXS series?
A: The "non-rotational" accuracy of ordinary cylinders usually relies on the keyway fit between the piston rod and the cylinder head, resulting in low accuracy (approximately ±1°-±2°) and easy wear. The CXS series, however, uses a dual-rod + dedicated guide structure, integrating guidance and drive, achieving an accuracy of up to ±0.1°, and can withstand greater lateral loads, maintaining high accuracy even after long-term use.
Q: Can a magnetic switch be installed on the CXSM20-30A? Which model?
A: Yes, it can. This model has a built-in magnetic ring and can be fitted with an SMC magnetic switch for position detection. We recommend using SMC's D-M9 series (such as D-M9B, D-M9N, D-M9P) or A9 series, as well as the Y7BW, Y59A, Z73, and Z76 switch models listed in the specification sheet. You can specify the switch when ordering, such as CXSM20-30A-Z73L.
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