
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X100-10SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø125mm bore and 100mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
The AirTAC ACQJ125X100-10SB is a double-acting, single-rod JIS compact cylinder featuring a big 125mm bore and a 100mm full stroke. An external threaded stop with a lock nut restricts the extend end position, providing a usable forward range of 90-100mm. The retract stroke remains completely unaffected. Because the piston area stays the same, output force equals that of a standard ACQ of this bore.
This SB configuration includes a male M30x1.5 rod end that couples directly to your load, plus a built-in piston magnet for reed or electronic solid-state switches. It uses PT3/8 ports and delivers 6135.9N push force at 0.5MPa. Fixed NBR elastomer bumpers absorb impact at both ends, making it ideal for high-energy big-bore automation up to 300mm standard stroke limits.
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X100-10SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø125 mm |
| Full stroke | 100 mm |
| Adjuster thread | M27×2.0 |
| 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 | M22×2.5 (F) / M30×1.5 (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 | 6136 N | 5734 N |
| 0.7 MPa | 8590 N | — |
| Max (@1.0 MPa) | 1251 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. |
|---|---|
| 125 | 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 stop during heavy press setup without machining custom spacers.
Adapt end positions rapidly on automotive assembly lines when switching between different product fixtures.
Fine-tune the forward reach on large packaging palletizers to accommodate varying carton dimensions.
Selecting this 125mm bore yields 6135.9N push and 5733.8N pull at 0.5MPa, stepping up significantly from the 100mm bore's 3927.0N push. If your application requires fixed end positions without variation, a standard ACQ cylinder is sufficient. When ordering, confirm the 125mm bore, 100mm full stroke, 10mm adjuster window, S magnet option, and B male rod thread.
Quick checklist
It provides 6135.9N push and 5733.8N pull at 0.5MPa, 8590.3N push at 0.7MPa, and a maximum push of 1251kgf at 1.0MPa. The full stroke is 100mm with a 10mm window, allowing an adjustable extend range of 90-100mm.
The M27x2.0 external stop limits only the extend length, leaving force identical to a standard ACQ. Fixed NBR elastomer bumpers decelerate the load at the ends. For fail-safe load holding on air loss, add an external rod lock.
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