Airtac ACQD Double Acting Compact Cylinder ACQD40X250
The AirTAC Airtac ACQD Double Acting Compact Cylinder ACQD40X250 is a genuine double-acting COMPACT (JIS) cylinder with a piston rod out BOTH ends — a Ø40mm 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.
- BoreØ40 mm
- Stroke250 mm
- Port sizePT1/8
- Acting typeDouble acting, double rod
- Rod threadM8×1.25 (F) / M14×1.5 (B)
- CushionBumper (both ends)
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac ACQD Double Acting Compact Cylinder ACQD40X250
The ACQD40X250 is a double-acting JIS compact cylinder featuring twin rods that exit both ends. Because a rod occupies each chamber, the annular area is identical in both directions, yielding equal push and pull forces of 527.8N at 0.5MPa and 738.9N at 0.7MPa. This symmetric output is ideal for balanced cycling tasks.
This 40mm bore variant provides a 250mm stroke, classifying it as a made-to-order long-stroke unit since it exceeds the 100mm standard maximum. It incorporates fixed NBR elastomer bumpers at both ends rather than adjustable air cushions. The second protruding rod end can drive a sensor flag or a secondary load, while the twin rods inherently resist rotation and extend guide length without needing an external guide.
Airtac ACQD Double Acting Compact Cylinder ACQD40X250 Technical Specifications
| Model | Airtac ACQD Double Acting Compact Cylinder ACQD40X250 |
|---|---|
| Series | ACQD JIS compact double-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 250 mm |
| Acting type | Double acting, double rod |
| Port size | PT1/8 |
| Rod end thread | M8×1.25 female / M14×1.5 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 (Ø40mm — equal both ways)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 528 N | 528 N |
| 0.7 MPa | 739 N | 739 N |
| Max (@1.0 MPa) | 108 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 ACQD40X250
| ACQD | JIS compact double-acting DOUBLE-ROD cylinder series. |
|---|---|
| 40 | 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 ACQD40X250 Is Used
Symmetric Transfer Pusher
Drives a dual-sided transfer fixture on packaging lines where equal 527.8N push and pull forces prevent imbalanced loading during product shifts.
Twin-Guided Stamping Press
Resists rotational torque during extended 250mm stamping cycles on small electronic contactors without requiring a bulky external anti-rotation guide.
Dual-Station Actuation
Utilizes the second rod end to mechanically trigger a secondary mechanism on a textile loom while the primary side executes the main work.
Is the Airtac ACQD Double Acting Compact Cylinder ACQD40X250 the Right Cylinder?
This 40mm bore generates 527.8N of force both ways at 0.5MPa. Stepping down to a 32mm bore drops the output to 301.6N, while a 50mm bore raises it to 824.6N. If your application only requires single-sided pushing and lacks a separate guide, a single-rod ACQ cylinder might fit better. For this 250mm configuration, confirm you need the extended travel, the female M8x1.25 rod-end thread, and the PT1/8 port. Note that this specific unit ships without a magnet.
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 ACQD40X250 FAQ
It delivers an equal push and pull force of 527.8N at 0.5MPa and 738.9N at 0.7MPa, with a maximum of 108kgf at 1.0MPa. Push equals pull because the twin rods create the same annular area in both chambers. The 250mm stroke is a long-stroke made-to-order variant, exceeding the 100mm standard maximum for this 40mm bore.
A plain ACQD does not hold position on air loss; you need an external rod lock or pilot check valve for fail-safe holding. For end-of-stroke deceleration, it uses fixed NBR elastomer bumpers rather than adjustable air cushions. For high-energy impacts at high speeds, add external shock absorbers.
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