
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X200-30SB 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.
The ACQJ40X200-30SB is a double-acting JIS compact cylinder with a 200mm made-to-order long stroke and a 30mm adjustable extend window. An external M12x1.25 threaded stop and lock nut lets you fine-tune the extend end position from 170mm up to the full 200mm directly on your machine. The retract stroke remains completely unaffected.
Because the adjuster only limits travel, the piston area stays the same, meaning force is identical to a standard ACQ of this bore. You get 628.3N push and 527.8N pull at 0.5MPa. This variant includes a male M14x1.5 rod end for direct load coupling, a piston magnet for sensing, and fixed NBR elastomer bumpers at both ends for end-of-stroke deceleration.
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X200-30SB |
|---|---|
| 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.
| 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.
| 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).
Dial in the exact clamping reach on a CNC machining center during part changeovers without machining new spacer blocks.
Adjust the extend endpoint on packaging lines to accommodate different box heights rapidly on the fly.
Set precise trial end positions for pressing bearings, allowing operators to tweak insertion depth without swapping cylinders.
Choose this 40mm bore if your setup needs the 628.3N push force at 0.5MPa, as a smaller 32mm bore yields 402.1N push, while a larger 50mm bore provides 981.8N. A standard fixed-stroke ACQ suffices if your extend position never varies. Confirm your ordering essentials: 40mm bore, 200mm full stroke, 30mm window, the S magnet, and B male rod thread. Note that a plain compact cylinder drifts on air loss, so add an external rod lock if you need fail-safe load holding.
Quick checklist
The usable extend range is 170-200mm (200mm full stroke minus the 30mm window). 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 128kgf at 1.0MPa. The retract stroke is unaffected by the adjuster.
The external M12x1.25 stop screw limits extend travel only, leaving force unchanged. Fixed NBR elastomer bumpers decelerate the piston at both ends instead of an adjustable air cushion. The built-in S magnet works with reed or electronic solid-state switches for position sensing.
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