
The AirTAC Airtac ACQJ80-100 Adjustable Compact Cylinder ACQJ80X40-30B 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 ACQJ80X40-30B is a double-acting JIS compact cylinder with an external threaded stop that limits the extend end position. You can fine-tune the usable extend range from 10 mm up to the full 40 mm directly on your machinery, while the retract stroke remains completely unaffected.
Because the adjuster only alters travel length and not piston area, output force stays identical to a standard ACQ of this bore. This male-rod (-B) variant drives loads directly via its M22x1.5 thread, handling 2513.2 N of push at 0.5 MPa. It features a fixed NBR elastomer bumper at each end and operates reliably between -20 and +70 C.
| Model | Airtac ACQJ80-100 Adjustable Compact Cylinder ACQJ80X40-30B |
|---|---|
| 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 initial tool setup, using the external stop to avoid over-travel on delicate castings.
Adjust the extend position of a sorting gate on a packaging line to accommodate different carton widths without swapping out the entire cylinder body.
Set precise trial end positions for pressing bearings on an automated assembly line, allowing operators to shorten the stroke by up to 30 mm on the fly.
When sizing this unit, stepping down to a 63 mm bore yields 1558.6 N of push at 0.5 MPa, whereas stepping up to a 100 mm bore provides 3927.0 N. If your setup never requires end-position tweaks, a fixed-stroke ACQ cylinder will suffice and save complexity. To order this adjustable version correctly, confirm the 80 mm bore, 40 mm full stroke, 30 mm window, the male M22x1.5 rod thread, and note that this specific SKU ships without a sensor magnet.
Quick checklist
This 80 mm bore cylinder delivers 2513.2 N of push and 2267.8 N of pull at 0.5 MPa, 3518.5 N of push at 0.7 MPa, and a maximum push of 513 kgf at 1.0 MPa. The -30 mm window allows you to shorten the extend stroke by up to 30 mm, giving a usable extend range of 10-40 mm.
An external M20x1.5 threaded stop with a lock nut mechanically limits the extend travel, leaving the retract stroke untouched. Force remains identical to a standard ACQ because piston area is unchanged, and deceleration relies on a fixed elastomer bumper rather than an adjustable air cushion. Note that this cylinder will not hold its load if air pressure is lost; install an external rod lock for fail-safe positioning.
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