Airtac ACQD Double Acting Compact Cylinder ACQD50X250SB
The AirTAC Airtac ACQD Double Acting Compact Cylinder ACQD50X250SB is a genuine double-acting COMPACT (JIS) cylinder with a piston rod out BOTH ends — a Ø50mm bore and 250mm stroke. The twin rods resist rotation and give equal push and pull force, so it carries and guides a tool platform without a separate anti-rotation guide.
- BoreØ50 mm
- Stroke250 mm
- Port sizePT1/4
- Acting typeDouble acting, double rod
- Rod threadM10×1.5 (F) / M18×1.5 (B)
- CushionBumper (both ends)
About the Airtac ACQD Double Acting Compact Cylinder ACQD50X250SB
The ACQD50X250SB is a double-acting JIS compact cylinder featuring a 50mm bore and an extended 250mm stroke. Because twin Ø20mm rods protrude from both ends, the annular piston area remains identical in either travel direction. This architecture yields perfectly equal push and pull forces of 824.6N at 0.5MPa, eliminating the force differential found in single-rod units. The extended 250mm travel exceeds the 100mm standard maximum for this bore size, classifying it as a made-to-order long-stroke variant.
Equipped with a male M18x1.5 rod-end thread (-B) and a piston magnet (-S), the unit couples directly to tooling while supporting reed or solid-state sensing. NBR elastomer bumpers fixed inside the body absorb end-of-stroke impacts without requiring adjustment. Operating pressure spans 0.15-1.0MPa. Note that a standard ACQD does not hold position upon air loss; an external rod lock or pilot check valve is necessary for fail-safe load holding.
Airtac ACQD Double Acting Compact Cylinder ACQD50X250SB Technical Specifications
| Model | Airtac ACQD Double Acting Compact Cylinder ACQD50X250SB |
|---|---|
| Series | ACQD JIS compact double-rod cylinder |
| Bore size | Ø50 mm |
| Stroke | 250 mm |
| Acting type | Double acting, double rod |
| Port size | PT1/4 |
| Rod end thread | M10×1.5 female / M18×1.5 male (B) |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 500 mm/s |
| Cushion | Bumper (both ends) |
| Max standard stroke | Up to 100 mm |
Specifications follow the official AirTAC ACQD datasheet. A rod exits both ends, so both directions use the same annular area. Confirm against the product label before installation.
Theoretical Output Force (Ø50mm — equal both ways)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 825 N | 825 N |
| 0.7 MPa | 1155 N | 1155 N |
| Max (@1.0 MPa) | 168 kgf | |
Because a rod occupies both chambers, push and pull forces are EQUAL — the annular area applies in each direction. Actual usable force is lower due to friction; size with a safety margin.
Model Code: Airtac ACQD Double Acting Compact Cylinder ACQD50X250SB
| ACQD | JIS compact double-acting DOUBLE-ROD cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×250 | Stroke length in mm. |
| S | Built-in magnet for magnetic-switch sensing (omit = none). |
| B | Male-thread piston rod (omit = female thread). |
Thread: PT standard (G / NPT available). The twin rods resist rotation and add guiding length. Related: ACQ (single rod), ACQJ (adjustable stroke), TACQ (guided).
Where the Airtac ACQD Double Acting Compact Cylinder ACQD50X250SB Is Used
Symmetric Transfer Pusher
Drives a dual-sided packaging pusher where matching advance and retract forces prevent jamming during product diversion on a conveyor line.
Twin-Guided Strip Ejector
Ejects stamped metal strips on a press line, using the second rod end to mount a sensor flag while resisting rotational torque without an external guide.
Dual-Station Indexer
Actuates a dual-station indexing platform on PCB assembly machinery, leveraging the extended 250mm travel and male M18x1.5 thread for direct load coupling.
Is the Airtac ACQD Double Acting Compact Cylinder ACQD50X250SB the Right Cylinder?
Selecting this 50mm bore yields 824.6N of equal bidirectional force at 0.5MPa. If your application requires less force, stepping down to a 40mm bore provides 527.8N. For heavier demands, a 63mm bore offers 1401.5N. Keep in mind this 250mm stroke is a non-standard long-stroke configuration. If a shorter standard 100mm travel suffices, a single-rod ACQ or a guided TACQ might provide a more compact footprint. Confirm the PT1/4 port, M18x1.5 male rod, and magnet requirements when ordering.
Quick checklist
- ✓ Equal force both ways at your pressure
- ✓ Anti-rotation needed (twin rods)?
- ✓ Both rod ends usable for tooling?
- ✓ Magnet (S) for sensors?
- ✓ Female (blank) or male (B) rod thread
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Both rods share the load — keep force concentric.
- check Twin rods resist rotation but avoid heavy side load.
- check Handle the C-clip carefully; seat it fully in its groove.
- check Installation by qualified personnel per AirTAC docs.
Airtac ACQD Double Acting Compact Cylinder ACQD50X250SB FAQ
It generates equal push and pull forces of 824.6N at 0.5MPa and 1154.5N at 0.7MPa, with a maximum of 168kgf at 1.0MPa. Push equals pull because the twin rods occupy both chambers, creating identical annular areas. The 250mm stroke is a long-stroke variant exceeding the 100mm standard maximum for a 50mm bore.
It uses fixed NBR elastomer bumpers at both ends to absorb impact, meaning no adjustable air cushion is present. The -S option includes a piston magnet compatible with reed or electronic solid-state switches. Additionally, the -B option provides a male M18x1.5 thread on the rod end for direct mounting.
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