Airtac ACQD Double Acting Compact Cylinder ACQD40X70SB
The AirTAC Airtac ACQD Double Acting Compact Cylinder ACQD40X70SB is a genuine double-acting COMPACT (JIS) cylinder with a piston rod out BOTH ends — a Ø40mm bore and 70mm 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
- Stroke70 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 ACQD40X70SB
The AirTAC ACQD40X70SB is a double-acting JIS compact cylinder where a 16mm piston rod protrudes from both ends. Because a rod occupies both internal chambers, the effective annular area is identical in each direction, yielding perfectly equal push and pull forces of 527.8N at 0.5MPa and 738.9N at 0.7MPa. This symmetry is essential for applications needing consistent dynamics in both travel directions.
Twin rods grant a longer guide length and high torsional resistance, allowing the unit to carry a small tool platform directly without requiring an external anti-rotation guide. The second rod end can drive a sensor flag or a secondary load. This 40mm bore variant features a male M14x1.5 rod thread (-B) for direct load coupling, a built-in piston magnet (-S) compatible with reed or solid-state switches, and fixed NBR elastomer bumpers at both ends for end-of-stroke deceleration.
Airtac ACQD Double Acting Compact Cylinder ACQD40X70SB Technical Specifications
| Model | Airtac ACQD Double Acting Compact Cylinder ACQD40X70SB |
|---|---|
| Series | ACQD JIS compact double-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 70 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 ACQD40X70SB
| ACQD | JIS compact double-acting DOUBLE-ROD cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×70 | 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 ACQD40X70SB Is Used
Twin-Guided Tool Platform
Drives a machining or inspection head on a packaging machine, using the dual rods to maintain tool parallelism and resist torsional deflection during the work stroke.
Symmetric Transfer Unit
Moves a clamped part between two processing stations with identical 738.9N force in both directions, ensuring smooth acceleration and deceleration regardless of travel orientation.
Dual-Station Actuation
Actuates a secondary mechanism or sensor flag from the rear rod end while the front rod drives the primary pick-and-place assembly on an automated electronics line.
Is the Airtac ACQD Double Acting Compact Cylinder ACQD40X70SB the Right Cylinder?
With a 70mm stroke, this 40mm bore model sits well within the 100mm standard maximum. If sizing force, the adjacent 32mm bore provides 301.6N and the 50mm bore provides 824.6N at 0.5MPa. Choose a single-rod ACQ if you only need standard extension and want higher forward thrust, or a TACQ slide unit if your payload requires heavy external linear guidance. To order, confirm the 40mm bore, 70mm stroke, -S magnet, and -B male M14x1.5 thread; standard PT1/8 ports are assumed.
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 ACQD40X70SB FAQ
The ACQD40X70SB delivers equal push and pull forces of 527.8N at 0.5MPa and 738.9N at 0.7MPa, with a maximum holding capacity of 108kgf at 1.0MPa. Push equals pull because the double-rod design creates the same annular piston area in both directions. The maximum standard stroke for this 40mm bore is 100mm.
It uses fixed NBR elastomer bumpers at both ends for impact deceleration, not adjustable air cushions. The -S option provides a piston magnet for reed or electronic solid-state switches. A plain ACQD does not hold position on air loss; for fail-safe load holding, an external rod lock or pilot-operated check valve is required.
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