
The AirTAC Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X100-10SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø20mm bore and 100mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
The AirTAC ACQJ20X100-10SB is a double-acting JIS compact cylinder featuring a 10mm adjustable extend window, allowing you to set the forward stroke anywhere between 90mm and 100mm directly on your equipment. An external M8x1.25 threaded stop with a lock nut handles this tuning, while the retract distance remains completely unaffected. Because the piston area stays constant, output force matches a standard ACQ exactly.
This bore 20mm unit delivers 157.1N of push and 117.8N of pull at 0.5MPa, peaking at 32kgf at 1.0MPa. It incorporates a male M8x1.25 rod end for direct load coupling, M5x0.8 PT ports, and fixed elastomer bumpers at both ends. The built-in magnet (-S) supports both reed and solid-state sensors, operating smoothly across a 30-500mm/s speed range.
| Model | Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X100-10SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø20 mm |
| Full stroke | 100 mm |
| Adjuster thread | M8×1.25 |
| Port size | M5×0.8 |
| 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 | M5×0.8 (F) / M8×1.25 (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 | 157 N | 118 N |
| 0.7 MPa | 220 N | — |
| Max (@1.0 MPa) | 32 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. |
|---|---|
| 20 | Bore size in mm. |
| ×100 | 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 90-100mm extend position during CNC load/unload robot changeovers without machining new spacers.
Adjust the forward stroke on the fly to accommodate different box heights on a packaging line, ensuring consistent flap folding.
Fine-tune the end stop for delicate bearing insertion tasks, preventing overtravel while maintaining full 157.1N thrust.
Selecting this bore is ideal when your application requires up to 219.9N of push force at 0.7MPa; dropping down to a 16mm bore limits you to 100.5N push, whereas stepping up to 25mm provides 245.4N. If your end position never varies, a fixed-stroke ACQ cylinder is simpler, but this model shines for trial setups and product changeovers. Confirm your ordering essentials: 20mm bore, 100mm full stroke, 10mm window, the -S magnet, and -B male rod thread.
Quick checklist
This 20mm bore cylinder has a usable extend range of 90-100mm via a 10mm adjustable window. It provides 157.1N push and 117.8N pull at 0.5MPa, 219.9N push at 0.7MPa, and a maximum push of 32kgf at 1.0MPa. The retract stroke remains fixed at 100mm.
The external M8x1.25 threaded stop with lock nut limits only the forward stroke length, so output force is identical to a standard ACQ. Fixed elastomer bumpers decelerate the rod near stroke ends, but the cylinder will not hold its load on air loss; use an external rod lock for fail-safe holding.
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