Festo DGSL-6-50-PA Mini Slide Cylinder
6mm Bore, 50mm Stroke, Double-Acting | Part Number: 543920 | Genuine New
Small Footprint, Serious Precision
Compact automation doesn't mean compromising on accuracy. The Festo DGSL-6-50-PA is a miniature slide cylinder that packs a ball-bearing cage guide, dual-end elastic cushioning, and proximity sensor compatibility into one of the smallest pneumatic slide packages in the DGSL series.
For pick-and-place cells, small-part assembly fixtures, and handling modules where space is counted in millimeters, this is the unit that fits without forcing a redesign around it.
The DGSL-6-50-PA carries part number 543920 and belongs to Festo's established DGSL mini slide family — double-acting, yoke-drive construction, designed for the demanding cycle counts of production automation.
Technical Specifications
| Parameter |
Value |
| Part Number |
DGSL-6-50-PA |
| Alternate Part Number |
543920 |
| Brand |
Festo |
| Series |
DGSL |
| Type |
Mini Slide / Slide Table |
| Bore Size |
6 mm |
| Piston Diameter |
8 mm |
| Stroke |
50 mm |
| Mode of Operation |
Double-acting |
| Drive Unit Design |
Yoke (piston rod + slide) |
| Operating Pressure |
0.15 - 0.8 MPa (1.5 - 8 bar) |
| Max Speed |
0.5 m/s |
| Repetition Accuracy |
0.3 mm |
| Cushioning |
Elastic rings/pads at both ends (P) |
| Guide Type |
Ball bearing cage |
| Mounting Position |
Any |
| Position Sensing |
For proximity sensor |
| Theoretical Force at 6 bar (advancing) |
30 N |
| Theoretical Force at 6 bar (retracting) |
23 N |
| Operating Medium |
Compressed air per ISO 8573-1:2010 |
What Makes the DGSL Design Work
The DGSL series uses a yoke-drive construction — the piston rod connects to a sliding plate (the yoke) rather than directly coupling to the load.
This arrangement allows the slide to carry transverse loads without transmitting them into the piston rod, which extends the working life of the seals and keeps the motion smooth across the full stroke.
The ball-bearing cage guide is the component that makes the 0.3mm repetition accuracy achievable in practice.
Ball cage guides distribute load evenly across multiple contact points and resist the moment forces that arise when a load is offset from the slide center — a common situation in pick-and-place grippers and part-transfer assemblies.
The elastic cushioning rings at both ends handle deceleration at stroke endpoints without the metal-to-metal contact that would otherwise introduce shock into the structure. On high-cycle applications, this cushioning extends the service life of the slide body and the tooling attached to it.
Position Sensing Integration
The DGSL-6-50-PA is equipped with a sensor slot for proximity sensors — an integrated feature that doesn't add projecting hardware to the assembly envelope. Proximity sensors can be fitted directly into the slot to detect end-position, intermediate position, or both, feeding signals back to a PLC or pneumatic controller.
The clean integration keeps the overall module compact and eliminates the cable routing issues that external sensor brackets introduce.
Handling and Assembly Applications
This size and stroke combination appears frequently in:
- Small-part pick-and-place modules — where the 50mm stroke bridges the gap between a feed position and a placement position on a compact assembly station
- Pneumatic gripper positioning — the slide advances a gripper to the workpiece and retracts cleanly for the next cycle
- Miniature transfer systems — where multiple DGSL units are combined in XY or linear configurations
- Fixture clamping actuation — the double-acting design holds a clamped position under pressure and releases positively on signal
- Electronic component handling — where the 0.3mm repetition accuracy supports precise part placement on PCB assemblies or connector insertion tasks
Frequently Asked Questions
What is the operating pressure range for the DGSL-6-50-PA?
The operating pressure range is 1.5 to 8 bar (0.15 to 0.8 MPa). Minimum pressure of 1.5 bar is needed to ensure reliable actuation. Operating above 8 bar will exceed the rated pressure limit and should be avoided.
Can the DGSL-6-50-PA be mounted in any orientation?
Yes — the mounting position is specified as any orientation. The ball-bearing cage guide and yoke construction allow horizontal, vertical, and angled mounting without affecting performance or guide life.
What type of position sensors are compatible with this slide?
The slide is designed for proximity sensors that fit the integrated sensor slot on the slide body. Festo's SME/SMT series proximity switches and compatible third-party sensors in the same form factor can be used. Check the sensor slot dimensions against your sensor body size before ordering.
What is the difference between the PA and P1A cushioning variants?
The PA variant uses elastic cushioning rings at both ends — flexible deceleration without metal-to-metal end contact. The P1A variant uses a combination of elastic cushioning and adjustable fine cushioning at the front end for higher-speed applications where more precise end-position control is needed. For standard moderate-speed applications, the PA is the more common and cost-effective choice.
Is the DGSL-6-50-PA compatible with oil-lubricated air systems?
Yes, with a condition. The unit can operate with oil-lubricated compressed air, but once lubricated operation begins, continued lubrication is required for the remainder of the unit's service life. Running a previously lubricated unit without oil will cause premature seal wear. For new installations, Festo recommends oil-free operation per ISO 8573-1:2010 [7:4:4] to avoid this dependency.
Verify mounting dimensions, sensor compatibility, and stroke requirements against your application before ordering. The DGSL-6-50-PA is a precision component — correct installation conditions directly affect repetition accuracy and service life.
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