
The AirTAC Airtac ACQD Double Acting Compact Cylinder ACQD50X125S is a genuine double-acting COMPACT (JIS) cylinder with a piston rod out BOTH ends — a Ø50mm bore and 125mm 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.
The AirTAC ACQD50X125S is a double-acting JIS compact cylinder featuring twin Ø20mm rods that exit from both ends. Because a rod occupies each chamber, the annular area is identical in both directions, generating equal push and pull forces of 824.6N at 0.5MPa and 1154.5N at 0.7MPa. This symmetric thrust is ideal for balanced transfer cycles, while the dual-rod design inherently resists rotation and extends guiding length without requiring an external non-rotating guide.
This made-to-order variant features a 125mm stroke, exceeding the 100mm standard maximum for this 50mm bore. It includes a built-in piston magnet (-S) compatible with reed or solid-state electronic switches via its dedicated sensor grooves. Deceleration is handled by fixed NBR elastomer bumpers at both ends rather than adjustable air cushions, and the standard PT1/4 porting supplies air filtered to 40 microns.
| Model | Airtac ACQD Double Acting Compact Cylinder ACQD50X125S |
|---|---|
| Series | ACQD JIS compact double-rod cylinder |
| Bore size | Ø50 mm |
| Stroke | 125 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.
| 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.
| ACQD | JIS compact double-acting DOUBLE-ROD cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×125 | 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).
Drives a dual-sided parts shuttle on an assembly line where matching push and pull thrust prevents workpiece skewing during bidirectional transit.
Carries a small tooling platform in electronics manufacturing, using the extended guide length of the two rods to resist torsional deflection without external guides.
Powers a packaging machine where the primary rod end drives a sealing head while the opposite end mounts a sensor flag to confirm stroke position.
Selecting this 50mm bore provides 824.6N of thrust both ways at 0.5MPa; stepping down to a 40mm bore drops the equal force to 527.8N, while moving up to a 63mm bore raises it to 1401.5N. If your application only requires standard stroke lengths up to 100mm, the standard ACQD50X100S offers shorter overall dimensions. For loads needing precise multi-axis guidance without external rails, the twin rods here provide an extended bearing span. Confirm the female M10x1.5 rod-end threads and PT1/4 port size when ordering, and note that a plain cylinder drifts on air loss, requiring an external pilot check valve for fail-safe holding.
Quick checklist
It delivers an equal push and pull force of 824.6N at 0.5MPa and 1154.5N at 0.7MPa, with a maximum capacity of 168kgf at 1.0MPa. Push and pull forces are identical because the twin rods create the same annular area in both chambers. The 125mm stroke is a long-stroke made-to-order variant, exceeding the 100mm standard maximum for a 50mm bore.
It uses fixed NBR elastomer bumpers at both ends for end-of-stroke damping, which are not adjustable, so external shock absorbers may be needed for high-energy loads. The -S option includes a piston magnet for use with reed or electronic solid-state switches fitted into the body grooves, and the second rod end can drive an external sensor flag.
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