Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X200-20SB
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X200-20SB 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 ACQJ40X200-20SB
The ACQJ40X200-20SB is a double-acting JIS compact cylinder with an external threaded stop and lock nut that limits the extend stroke. You get a usable extension range of 180 to 200 mm, letting you fine-tune the end position directly on the machine without swapping parts. The retract stroke remains completely unaffected. This configuration includes a male M14x1.5 piston rod end and a built-in piston magnet for position sensing.
Because the adjuster only alters travel length, the output force matches a standard ACQ of the same bore: 628.3 N push and 527.8 N pull at 0.5 MPa. The cylinder uses a PT1/8 port and a fixed NBR elastomer bumper at each end for deceleration. Note that this 200 mm stroke is a long-stroke made-to-order variant, exceeding the 100 mm standard maximum for this 40 mm bore.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X200-20SB Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X200-20SB |
|---|---|
| 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 ACQJ40X200-20SB
| 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 ACQJ40X200-20SB Is Used
Machining Fixture Changeover
Dial in the exact extend stop up to 20 mm shorter than full travel when swapping part fixtures on a CNC loading station, ensuring tools meet the new workpiece height without redesigning mounts.
Carton Sealing Plunge Depth
Regulate the downward travel of a sealing head on a packaging line to accommodate varying package thicknesses, using the external M12x1.25 adjuster to set the precise 180-200 mm endpoint.
Press Trial Positions
Test different end-of-stroke contact points on a light assembly press during product development, relying on the fixed elastomer bumper to absorb the impact at each adjusted stop.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X200-20SB the Right Cylinder?
When sizing this actuator, consider the 32 mm bore which yields 402.1 N push at 0.5 MPa, or the 50 mm bore which provides 981.8 N push. If your setup never requires altering the extend endpoint, a fixed-stroke ACQ cylinder is simpler and suffices. To order this adjustable unit correctly, confirm the 40 mm bore, 200 mm full stroke, 20 mm window, the -S magnet for electronic or reed switches, and the -B male M14x1.5 rod 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 ACQJ40X200-20SB FAQ
The usable extend range is 180 to 200 mm. Force is identical to a standard ACQ: 628.3 N push and 527.8 N pull at 0.5 MPa, 879.6 N push at 0.7 MPa, and a maximum push of 128 kgf at 1.0 MPa.
No, the external M12x1.25 threaded stop with lock nut changes only the extend stroke length, not the piston area or force. The cylinder uses fixed elastomer bumpers, not a brake; it will drift on air loss, so add an external rod lock for fail-safe load holding.
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Related AirTAC ACQJ Compact Cylinders
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