
The AirTAC Airtac ACQJ80-100 Adjustable Compact Cylinder ACQJ80X40-40SB 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 ACQJ80X40-40SB is a double-acting JIS compact cylinder with an external threaded stop and lock nut that limits the extend end position. The full stroke is 40mm with a 40mm adjustment window, yielding a usable extend range of 0-40mm. The retract stroke remains completely unaffected by this mechanism.
Because the piston area is unchanged, the output force is identical to a standard ACQ of the same 80mm bore. This model includes a male M22x1.5 piston rod thread for direct load coupling, a PT3/8 port, and a built-in magnet (-S) for position sensing. It relies on a fixed NBR elastomer bumper at each end for deceleration.
| Model | Airtac ACQJ80-100 Adjustable Compact Cylinder ACQJ80X40-40SB |
|---|---|
| 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 fixture during part changeovers without machining new spacer blocks.
Adjust the folding stroke depth on the fly to accommodate varying box heights on a packaging line.
Set precise trial end positions on a light-duty press to prevent over-travel during prototype forming.
If you need slightly less force, the 63mm bore provides 1558.6N push at 0.5MPa, while the larger 100mm bore yields 3927.0N. Since the full stroke here is 40mm and the window is 40mm, a fixed-stroke ACQ80X40 is sufficient if you never require on-the-fly end-position tuning. To order, confirm the 80mm bore, 40mm full stroke, 40mm window, the -S magnet for switches, and the -B male rod thread.
Quick checklist
The usable extend range is 0-40mm (40mm full stroke minus the 40mm window). Force is identical to a standard ACQ: 2513.2N push and 2267.8N pull at 0.5MPa, 3518.5N push at 0.7MPa, and a maximum push of 513kgf at 1.0MPa. The external adjuster thread is M20x1.5.
An external threaded stop with a lock nut limits the extend stroke only, meaning the force remains unchanged. The retract stroke is unaffected. Deceleration is handled by a fixed elastomer bumper, not an adjustable air cushion. The built-in -S magnet works with both reed and electronic solid-state switches.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models are processed and dispatched in 3-5 business days.
Most inquiries answered within 7-8 hours.
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.