Airtac ACQD Double Acting Compact Cylinder ACQD40X125B
The AirTAC Airtac ACQD Double Acting Compact Cylinder ACQD40X125B is a genuine double-acting COMPACT (JIS) cylinder with a piston rod out BOTH ends — a Ø40mm 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.
- BoreØ40 mm
- Stroke125 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 ACQD40X125B
The AirTAC ACQD40X125B is a double-acting JIS compact cylinder featuring twin rods that exit both ends of the body. 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 specific 125mm stroke variant is a made-to-order long-stroke unit, exceeding the 100mm standard maximum for this 40mm bore.
The dual-rod architecture inherently resists torsion and lengthens the guide bearing span, allowing you to mount a tooling platform directly without needing an external anti-rotation guide. It uses fixed NBR elastomer bumpers at both ends for end-of-stroke deceleration rather than adjustable air cushions. Equipped with a male M14x1.5 rod-end thread (the -B option), it couples directly to your load. Note that this specific configuration ships without a piston magnet, though the body retains sensor grooves for adding external reed or solid-state switches if needed later.
Airtac ACQD Double Acting Compact Cylinder ACQD40X125B Technical Specifications
| Model | Airtac ACQD Double Acting Compact Cylinder ACQD40X125B |
|---|---|
| Series | ACQD JIS compact double-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 125 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 ACQD40X125B
| ACQD | JIS compact double-acting DOUBLE-ROD cylinder series. |
|---|---|
| 40 | 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).
Where the Airtac ACQD Double Acting Compact Cylinder ACQD40X125B Is Used
Twin-Guided Transfer Pusher
Drives a wide packaging platform on a 125mm stroke, using the dual rods to prevent torsional deflection and maintain parallel tracking without a separate external guide rail.
Symmetric Push-Pull Cycling
Ideal for clamping and unclamping stations on automated test fixtures where the 527.8N force at 0.5MPa must be identical in both directions to ensure consistent part tension and release.
Dual-Station Actuation
Uses the second protruding rod end to trigger a mechanical flag or drive a secondary mechanism across a 125mm span in electronics assembly machinery, saving space and eliminating extra actuators.
Is the Airtac ACQD Double Acting Compact Cylinder ACQD40X125B the Right Cylinder?
When sizing this 40mm bore, consider the adjacent standard options. Dropping to a 32mm bore reduces the equal bidirectional force to 301.6N at 0.5MPa, while stepping up to a 50mm bore increases it to 824.6N. If your application only requires force in one direction and you can tolerate unequal push/pull dynamics, a single-rod ACQ series cylinder might suffice. However, if your mechanism strictly demands symmetric push/pull cycles and torsional rigidity over a 125mm stroke, this ACQD40X125B is the correct choice. Remember to specify PT1/8 port threads and the M14x1.5 male rod connection when ordering. Because the 125mm stroke exceeds the 100mm standard, expect a made-to-order lead time.
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 ACQD40X125B FAQ
The ACQD40X125B provides equal push and pull forces of 527.8N at 0.5MPa and 738.9N at 0.7MPa, with a maximum force of 108kgf at 1.0MPa. Push and pull are equal because the twin rods create identical annular areas in both chambers. The 125mm stroke is a made-to-order long-stroke variant (standard max is 100mm). It features a 40mm bore, PT1/8 port, and a male M14x1.5 rod-end thread.
Deceleration is handled by fixed NBR elastomer bumpers at both ends, not adjustable air cushions; for high kinetic energy, slow the approach or use external shock absorbers. This specific model lacks a piston magnet, but the body has grooves for mounting external reed or solid-state switches. A plain ACQD does not hold its load if air pressure drops; for fail-safe holding, you must install an external rod lock or pilot-operated check valve.
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