
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X70-10 is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø32mm bore and 70mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
The ACQJ32X70-10 is a double-acting JIS compact cylinder with an external threaded stop and lock nut that limits the extend end position. You can fine-tune the usable extend stroke from 60 mm up to the full 70 mm directly on the machine, while the retract stroke remains completely unaffected. Because the piston area stays the same, output force is identical to a standard ACQ of this bore.
This 32 mm bore unit features a 16 mm rod, PT1/8 porting, and an M12x1.25 adjuster thread. It incorporates a fixed NBR elastomer bumper at each end for end-of-stroke deceleration rather than an adjustable air cushion. The body includes magnetic-switch grooves, though this specific configuration ships without a magnet.
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X70-10 |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø32 mm |
| Full stroke | 70 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 | 402 N | 302 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 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. |
|---|---|
| 32 | Bore size in mm. |
| ×70 | 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 from 60 to 70 mm on a CNC machining fixture to accommodate raw material thickness variations without machining new stop collars.
Shift the extend end position during product family changeovers on a conveyor line, using the external lock nut to rapidly set new rejection or sorting distances.
Test and establish the optimal folding stroke for various carton sizes on packaging equipment, fine-tuning the end stop to prevent crushing during setup.
For context on sizing, stepping down to a 25 mm bore yields 245.4 N push at 0.5 MPa, whereas moving up to a 40 mm bore provides 628.3 N push. This 32 mm model delivers 402.1 N push and 301.6 N pull at 0.5 MPa, with a maximum push capacity of 82 kgf at 1.0 MPa. If your application requires a fixed extend position every cycle without on-machine tuning, a standard ACQ cylinder will suffice. When ordering, confirm the 32 mm bore, 70 mm full stroke, 10 mm adjustable window, female M8x1.25 rod-end thread, and whether you need the -S magnet option for sensor integration.
Quick checklist
The usable extend range is 60-70 mm, achieved by shortening the 70 mm full stroke by up to a 10 mm window. The force is identical to a standard ACQ: 402.1 N push and 301.6 N pull at 0.5 MPa, 562.9 N push at 0.7 MPa, and a maximum push of 82 kgf at 1.0 MPa.
An M12x1.25 threaded stop with a lock nut mechanically limits the extend length, changing only the stroke distance while leaving the piston area and force unchanged. The cylinder uses fixed NBR elastomer bumpers for deceleration rather than adjustable air cushions. Note that a plain ACQ-type does not hold its load on air loss; for a fail-safe hold, use an external rod lock.
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