Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X70-30
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X70-30 is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 70mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ40 mm
- Full stroke70 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X70-30
The AirTAC ACQJ40X70-30 is a double-acting, single-rod JIS compact cylinder featuring an external extend-stroke adjuster. A threaded stop with a lock nut allows you to fine-tune the forward end position directly on your equipment. With a 70mm full stroke and a 30mm adjustment window, the usable extend range spans 40 to 70mm. The retract movement remains completely unaffected by this mechanism.
Because the piston area is unchanged, output force equals a standard ACQ of the same bore: 628.3N push and 527.8N pull at 0.5MPa. The unit incorporates fixed NBR elastomer bumpers at both ends rather than adjustable air cushions. It features a 16mm piston rod, a female M8x1.25 rod-end thread, and PT1/8 ports. Note that this specific configuration ships without a magnet, though the body retains sensor grooves for external reed or solid-state switches.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X70-30 Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X70-30 |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Full stroke | 70 mm |
| Adjuster thread | M12×1.25 |
| Port size | PT1/8 |
| 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 |
| Rod thread | M8×1.25 (F) / M14×1.5 (B) |
Specifications follow the official AirTAC ACQJ datasheet. The adjustable stop shortens the EXTEND stroke only; the piston area — and therefore the force — is the same as a standard ACQ of this bore. Adjustable window options: 10/20/30/40/50/75/100 mm.
Theoretical Output Force (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 kgf | |
Force equals a standard ACQ of the same bore — the adjuster changes stroke length, not piston area. Actual usable force is lower due to friction; size with a safety margin.
Model Code: Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X70-30
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×70 | Full stroke length in mm. |
| -0 | Adjustable window in mm (extend stroke can be shortened by up to this). |
| S / B | Magnet (S) / male-thread rod (B); omit for none / female thread. |
Thread: PT standard (G / NPT available). Related: ACQ (fixed stroke), ACQD (double rod), TACQ (guided / non-rotating).
Where the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X70-30 Is Used
Machine Tolerance Compensation
Dial in the exact 40 to 70mm extend stop on CNC load-and-unload stations to absorb slight fixture height variations without machining new spacers.
Consumer Product Changeover
Adjust the end-of-stroke stop on packaging lines when switching between different carton sizes, ensuring precise pressing or folding depth.
Prototype Mechanism Setup
Safely trial different extended positions on new robotic gripper assemblies, finding the optimal reach before locking down the final mechanical stop.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X70-30 the Right Cylinder?
If your application requires less force, the ACQJ32 provides a 402.1N push at 0.5MPa, while the ACQJ50 steps up to a 981.8N push for heavier loads. If the forward position is fixed and never varies, a standard ACQ40 cylinder will suffice without the adjuster hardware. When ordering this adjustable variant, confirm the 40mm bore, 70mm full stroke, 30mm window, female rod thread, and that no magnet (-S) is required.
Quick checklist
- ✓ Need on-machine end-position tuning?
- ✓ Full stroke and adjust window (mm)
- ✓ Force at your working pressure
- ✓ 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 Lock the adjuster nut after setting the stop.
- check The stop limits the EXTEND stroke only.
- check Avoid side load on the short piston rod.
- check Installation by qualified personnel per AirTAC docs.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X70-30 FAQ
The usable extend range is 40-70mm (70mm full stroke minus the 30mm window). Output force is identical to a standard ACQ: 628.3N push and 527.8N pull at 0.5MPa, 879.6N push at 0.7MPa, and a maximum push of 128 kgf at 1.0 MPa.
An external M12x1.25 threaded stop with a lock nut limits the forward extension, changing stroke length only without altering piston area or force. The retract stroke is unaffected. Deceleration is handled by fixed NBR elastomer bumpers at each end, not adjustable air cushions, so external shock absorbers may be needed for high-energy loads.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC ACQJ Compact Cylinders
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