Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X200-20S
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X200-20S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 200mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ40 mm
- Full stroke200 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X200-20S
The AirTAC ACQJ40X200-20S is a double-acting, single-rod JIS compact cylinder built as a made-to-order long-stroke variant, as the 200mm stroke exceeds the 100mm standard maximum for this 40mm bore. It features an external threaded stop with a lock nut that permits precise on-machine extend end-position tuning without swapping components. The extend stroke can be shortened by up to 20mm, yielding a usable forward range of 180 to 200mm, while the retract stroke remains completely unaffected.
Because the internal piston area is unchanged, the output force is identical to a standard ACQ of the same bore, delivering 628.3N push at 0.5MPa. The cylinder body incorporates fixed NBR elastomer bumpers at each end for end-of-stroke deceleration rather than adjustable air cushions. Equipped with a piston magnet (-S), the unit is fully compatible with reed or electronic solid-state switches mounted directly into the body grooves.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X200-20S Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X200-20S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Full stroke | 200 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 ACQJ40X200-20S
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×200 | 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 ACQJ40X200-20S Is Used
CNC Fixture Positioning
Dial in the exact clamping reach on a CNC machining center during initial setup, allowing 180 to 200mm of forward travel to accommodate varying raw material blank sizes without machining custom spacers.
Assembly Line Changeover
Rapidly reconfigure the extend stop for product family changeovers on an automated assembly line, using the external M12x1.25 adjuster to set new end positions for different component heights on the fly.
Carton Sealing Triage
Test and trial the optimum pressing depth for a carton sealing flap mechanism, fine-tuning the stroke window by hand until the ideal seal compression is achieved before locking the nut down for production runs.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X200-20S the Right Cylinder?
When sizing this unit, consider the 32mm bore variant which provides 402.1N push at 0.5MPa, or the 50mm bore option which steps up to 981.8N push if your load requires more authority. If your application does not require variable end positions, a fixed-stroke ACQ cylinder will suffice and simplifies the setup. To order this adjustable model correctly, confirm the 40mm bore, the 200mm full stroke, the 20mm adjustment window, the -S magnet option, and the default female M8x1.25 rod-end thread.
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 ACQJ40X200-20S FAQ
The force is identical to a standard ACQ40 cylinder. It provides 628.3N push and 527.8N pull at 0.5MPa, 879.6N push at 0.7MPa, and a maximum push of 128kgf at 1.0MPa. The usable extend range is 180 to 200mm (a 20mm window off the 200mm full stroke).
The external threaded stop limits only the extend stroke length, leaving the retract stroke and the output force unchanged. The cylinder uses fixed NBR elastomer bumpers for end damping, not adjustable air cushions. Note that a standard compact cylinder will not hold its load on air loss; for fail-safe positioning, add an external rod lock or pilot-operated check valve.
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Related AirTAC ACQJ Compact Cylinders
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