Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ160X250-20SB
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ160X250-20SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø160mm bore and 250mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ160 mm
- Full stroke250 mm
- Port sizePT3/8
- Adjuster threadM36×2.0
About the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ160X250-20SB
The ACQJ160X250-20SB is a double-acting JIS compact cylinder from AirTAC's big-bore range, engineered with a 160mm bore and 250mm full stroke. An external threaded stop with a lock nut restricts the extend end position, providing a usable extend range of 230 to 250mm. The retract stroke remains completely unaffected. Because the piston area is unchanged, force output is identical to a standard ACQ of this size, delivering 10053.1N push and 9424.8N pull at 0.5MPa.
This model includes the -S magnet for compatibility with reed or electronic solid-state switches, alongside the -B male piston rod end (M36x1.5) for direct load coupling. It features a fixed NBR elastomer bumper at each end for end-of-stroke deceleration rather than an adjustable air cushion. Operating pressure spans 0.15 to 1.0MPa, and the PT3/8 port handles high flow requirements.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ160X250-20SB Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ160X250-20SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø160 mm |
| Full stroke | 250 mm |
| Adjuster thread | M36×2.0 |
| 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 | M24×3.0 (F) / M36×1.5 (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.
Theoretical Output Force (Ø160mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 10053 N | 9425 N |
| 0.7 MPa | 14074 N | — |
| Max (@1.0 MPa) | 2050 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.
Model Code: Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ160X250-20SB
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 160 | Bore size in mm. |
| ×250 | 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).
Where the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ160X250-20SB Is Used
Heavy Press Tonnage Setup
Dial in the exact 230-250mm extend position during heavy press commissioning without machining new spacers, ensuring optimal tonnage transfer before final lock-down.
Large Weldment Tooling
Adapt clamping reach on the fly for varying large metal weldment sizes, using the external M36x2.0 stop to accommodate part tolerance variations.
Automated Assembly Changeover
Swiftly reposition the end stop for product changeovers on automated heavy assembly lines, cutting setup times by tweaking the extend limit on the machine.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ160X250-20SB the Right Cylinder?
For lower force needs, the 140mm bore yields 7696.9N push at 0.5MPa, whereas stepping up is not possible as 160mm is the largest big-bore compact option. If exact 250mm extension is always required and never varies, a fixed-stroke ACQ cylinder is simpler. When ordering, confirm the 160mm bore, 250mm full stroke, 20mm adjuster window, S magnet, and B male rod thread. Note that a plain ACQ-type cylinder will not hold its load on air loss; the rod drifts, so add an external rod lock or pilot-operated check valve for fail-safe holding.
Quick checklist
- ✓ Need on-machine end-position tuning?
- ✓ Full stroke and adjust window (mm)
- ✓ Force at your working pressure
- ✓ Magnet (S) for sensors?
- ✓ Female (blank) or male (B) rod thread
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Lock the adjuster nut after setting the stop.
- check The stop limits the EXTEND stroke only.
- check Avoid side load on the short piston rod.
- check Installation by qualified personnel per AirTAC docs.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ160X250-20SB FAQ
At 0.5MPa it provides 10053.1N push and 9424.8N pull; at 0.7MPa push is 14074.3N. The maximum push is 2050kgf at 1.0MPa. The usable extend range is 230-250mm (250mm full stroke minus up to a 20mm window), while the retract stroke is unaffected.
No, the adjuster only changes the extend stroke length, not the piston area, so force remains identical to a standard ACQ. The cylinder uses a fixed NBR elastomer bumper at each end for deceleration. For high energy loads, add an external shock absorber, as the bumper only decelerates near stroke end.
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