
The AirTAC Airtac ACQJ80-100 Adjustable Compact Cylinder ACQJ80X40-30 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 ACQJ80X40-30 is a double-acting JIS compact cylinder featuring an external threaded stop and lock nut to limit the extend end position. With a full stroke of 40mm and a 30mm adjustment window, you can fine-tune the usable extend range from 10mm up to 40mm directly on your machinery. The retract stroke remains completely unaffected by this mechanism.
Because the adjustment only alters travel length and not the piston area, output force stays identical to a standard ACQ of the same bore. At 0.5 MPa it yields 2513.2N of push force and 2267.8N of pull force. The unit incorporates a fixed NBR elastomer bumper at each end for end-of-stroke deceleration, and the body includes sensor grooves, though this specific configuration ships without a magnet.
| Model | Airtac ACQJ80-100 Adjustable Compact Cylinder ACQJ80X40-30 |
|---|---|
| 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 exact clamping reach on a CNC machining center during part changeovers, utilizing the 10-40mm extend range to accommodate varying raw material widths without swapping hardware.
Adjust the carton flap tucking depth on a packaging line on the fly, ensuring precise folding mechanics for different box profiles while relying on the fixed bumper for consistent deceleration.
Set trial end positions for pressing bearings on an automated assembly line, allowing operators to tweak the 10-40mm stroke externally to prevent over-travel and part damage.
Selecting this 80mm bore actuator provides a robust 2513.2N push force at 0.5 MPa, stepping up from the 63mm bore's 1558.6N, or scaling down from the 100mm bore's 3927.0N if a smaller footprint is needed. If your application never requires end-position changes, a fixed-stroke ACQ cylinder will deliver the same power more simply. When ordering this adjustable variant, confirm the 40mm full stroke, the 30mm window, the PT3/8 port, and the female M16x2.0 rod-end thread.
Quick checklist
The usable extend range is 10-40mm, created by the 30mm adjustment window on the 40mm full stroke. Force is identical to a standard ACQ: push is 2513.2N and pull is 2267.8N at 0.5 MPa, push is 3518.5N at 0.7 MPa, and maximum push is 513 kgf at 1.0 MPa.
An external M20x1.5 threaded stop with a lock nut limits the extend travel without altering piston area, so force remains unchanged. The cylinder uses fixed elastomer bumpers for deceleration rather than adjustable cushions. While the body features sensor grooves, this model ships without a magnet, so reed or solid-state switches will not function unless a magnet is added.
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