Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X30-30SB
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X30-30SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 30mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ40 mm
- Full stroke30 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X30-30SB
The AirTAC ACQJ40X30-30SB is a double-acting JIS compact cylinder featuring an external threaded stop with a lock nut that restricts the EXTEND end position. With a 30mm base stroke and a 30mm adjustment window, you can set the usable extend range anywhere from 0mm up to 30mm directly on the machine. The RETRACT stroke remains completely unaffected by this external stop. Because the piston area stays the same, the output force is identical to a standard ACQ of this bore.
This specific configuration includes the -S piston magnet for tracking with reed or solid-state electronic switches, and the -B male rod-end thread (M14x1.5) for direct load coupling. It features a 16mm rod, PT1/8 port, and fixed NBR elastomer bumpers at both ends for end-of-stroke deceleration. Operating pressure spans 0.15 to 1.0 MPa, with a proof rating of 1.5 MPa.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X30-30SB Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X30-30SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Full stroke | 30 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 ACQJ40X30-30SB
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×30 | 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 ACQJ40X30-30SB Is Used
Product Changeover Stops
Quickly alter the extend endpoint from 0 to 30mm on a packaging line when switching between different carton sizes, eliminating the need to swap out physical hard stops.
Trial End Positions
Dial in the exact clamping reach on a machining fixture during prototype runs, testing various extend distances without disassembling the pneumatics.
Variable Ejection Distance
Adjust how far a part is pushed out of an assembly station on the fly, accommodating slight dimensional variations in incoming materials.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X30-30SB the Right Cylinder?
When sizing this 40mm bore actuator, stepping down to a 32mm bore yields a push force of 402.1N at 0.5MPa, while stepping up to a 50mm bore provides 981.8N. If the exact extend position never needs to vary after initial setup, a fixed-stroke ACQ cylinder is sufficient. To order correctly, confirm the 40mm bore, 30mm full stroke, 30mm window, S magnet option, and B male rod thread. Note that a plain ACQ-type cylinder will not hold a load on air loss; the rod drifts and the fixed bumper only decelerates near the stroke end. For a fail-safe hold, specify an external rod lock or pilot-operated check valve.
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 ACQJ40X30-30SB FAQ
The usable extend range is 0-30mm (30mm full stroke minus the 30mm window). The RETRACT stroke is unaffected. The force is identical to a standard ACQ: push is 628.3N and pull is 527.8N at 0.5MPa, push is 879.6N at 0.7MPa, and max push is 128kgf at 1.0MPa. The external adjuster has an M12x1.25 thread.
No, the external stop changes the stroke length only, so force remains unchanged. It is not a lock or brake. The cylinder uses fixed NBR elastomer bumpers at each end for deceleration. For high-speed or high-energy loads, add an external shock absorber or slow the approach speed.
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Related AirTAC ACQJ Compact Cylinders
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