
The AirTAC Airtac ACQJ80-100 Adjustable Compact Cylinder ACQJ80X40-30S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø80mm bore and 40mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
The AirTAC ACQJ80X40-30S is a double-acting JIS compact cylinder featuring an external threaded stop with a lock nut that restricts how far the rod extends. You can fine-tune the forward end position on the machine itself, yielding a usable extend span of 10 up to 40 mm, while the retract distance remains fixed at 40 mm. The adjuster mechanism alters travel length only, meaning the output force stays identical to a standard ACQ of this bore.
Delivering 2513.2 N of push force at 0.5 MPa and 3518.5 N at 0.7 MPa, this 80 mm bore unit relies on a fixed NBR elastomer bumper at each end for deceleration rather than an adjustable air cushion. The integrated piston magnet (-S option) allows tracking by either reed or solid-state switches, and the PT3/8 port feeds air to the 25 mm rod.
| Model | Airtac ACQJ80-100 Adjustable Compact Cylinder ACQJ80X40-30S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø80 mm |
| Full stroke | 40 mm |
| Adjuster thread | M20×1.5 |
| Port size | PT3/8 |
| 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 | M16×2.0 (F) / M22×1.5 (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 | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 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. |
|---|---|
| 80 | Bore size in mm. |
| ×40 | 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 forward clamping reach on a CNC lathe during product family changeovers without machining new spacer blocks.
Adjust the pressing depth for different package sizes on a packaging line by turning the external stopper screw.
Set precise metal-bending end points on the fly during prototype development to find the exact springback angle.
If you need slightly less thrust, the 63 mm bore yields 1558.6 N push at 0.5 MPa, whereas stepping up to the 100 mm bore provides 3927.0 N. Choose this specific ACQJ80X40-30S when your fixture setup demands a variable forward end stop within that 10 to 40 mm window; a fixed-stroke ACQ80x40 is sufficient if no on-machine travel shortening is required. Confirm your ordering essentials: 80 mm bore, 40 mm full stroke, 30 mm adjustment window, S magnet included, and the default female M16x2.0 rod-end thread.
Quick checklist
It provides 2513.2 N push and 2267.8 N pull at 0.5 MPa, 3518.5 N push at 0.7 MPa, and a maximum push of 513 kgf at 1.0 MPa. The usable extend range is 10 to 40 mm (a 40 mm full stroke shortened by the 30 mm window), and the retract stroke remains unaffected at 40 mm.
No, the external M20x1.5 adjuster changes the forward stroke length only, leaving the piston area and resulting thrust identical to a standard ACQ. Deceleration is handled by a fixed NBR elastomer bumper at each end, so for high-energy loads you should add an external shock absorber or slow the approach speed.
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