
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X35-40SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø32mm bore and 35mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
The AirTAC ACQJ32X35-40SB is a double-acting JIS compact cylinder featuring a 32mm bore and a 35mm full stroke. An external M12x1.25 threaded stop with a lock nut limits the extend end position, providing a usable extend range of 0-35mm. The retract stroke remains completely unaffected by this adjustment. Because the piston area is unchanged, output force equals a standard ACQ of this bore.
This model includes a male M14x1.5 piston rod end for direct load coupling and a built-in magnet (-S) for position sensing. It uses a PT1/8 port and fixed NBR elastomer bumpers at both ends for end-of-stroke deceleration. Operating pressure ranges from 0.15 to 1.0 MPa, with a speed range of 30-500 mm/s.
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X35-40SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø32 mm |
| Full stroke | 35 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. |
| ×35 | 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 extend position of a 32mm bore clamping arm on a CNC machining center during product-changeover without machining new spacers.
Adjust the downward push depth of a tamping mechanism on a packaging line to settle different carton fill volumes precisely on the machine.
Set trial end positions for a press pin insertion tool, tweaking the 0-35mm extend range on-site to find the optimal seating force without reprogramming.
If sizing down, the 25mm bore yields 245.4N push at 0.5MPa, while sizing up to the 40mm bore provides 628.3N push. This 32mm bore delivers 402.1N push and 301.6N pull at 0.5MPa. Choose this adjustable unit when setup-varying fixtures require exact extend tuning without swapping parts; if a fixed end position is sufficient, a standard ACQ cylinder suffices. Confirm ordering essentials: 32mm bore, 35mm full stroke, 40mm window, magnet, and male rod thread.
Quick checklist
The usable extend range is 0-35mm (full 35mm stroke minus the 40mm window). Force is identical to a standard ACQ: push is 402.1N and pull is 301.6N at 0.5MPa, push is 562.9N at 0.7MPa, and max push is 82kgf at 1.0MPa.
The external M12x1.25 threaded stop with lock nut limits only the extend stroke length; it does not change piston area or force. The cylinder uses fixed NBR elastomer bumpers, not adjustable air cushions. The included -S magnet works with both reed and electronic solid-state switches.
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