Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ160X125-20SB
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ160X125-20SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø160mm bore and 125mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ160 mm
- Full stroke125 mm
- Port sizePT3/8
- Adjuster threadM36×2.0
About the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ160X125-20SB
The ACQJ160X125-20SB is a double-acting JIS compact cylinder with a 160 mm bore and a 125 mm full stroke. An external threaded stop with a lock nut limits the EXTEND end position, giving a usable extend range of 105 to 125 mm. The RETRACT stroke remains unaffected. As the adjuster only changes stroke length and not the piston area, the output force is identical to a standard ACQ of this size.
This big-bore variant features a male-thread piston rod end (M36x1.5) for direct load coupling. It includes a built-in piston magnet (-S) for use with reed or solid-state switches, and relies on a fixed NBR elastomer bumper at each end for end-of-stroke deceleration. The external adjuster utilizes an M36x2.0 thread.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ160X125-20SB Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ160X125-20SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø160 mm |
| Full stroke | 125 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 ACQJ160X125-20SB
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 160 | Bore size in mm. |
| ×125 | 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 ACQJ160X125-20SB Is Used
Heavy Press Fixtures
Dial in the exact clamping extension between 105 and 125 mm during product changeovers on large metal-forming presses without machining new stop collars.
Pallet Positioning Stops
Adjust the end-of-stroke stop on-site for varying pallet dimensions in automated assembly lines, relying on the massive 14074.3 N push force at 0.7 MPa.
Bending Machine Setup
Trial and set precise end positions for heavy-duty material bending operations, utilizing the M36x1.5 male rod thread for direct, rigid tool mounting.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ160X125-20SB the Right Cylinder?
Choosing this 160 mm bore yields a push force of 10053.1 N and a pull force of 9424.8 N at 0.5 MPa. Stepping down to the 140 mm bore lowers the push to 7696.9 N, while stepping up is unavailable as this is the largest big-bore compact option. A fixed-stroke ACQ is sufficient if your extend end position never requires on-machine tuning. When ordering, verify the 125 mm full stroke, the 20 mm adjustable window, the -S magnet, and the -B male rod thread.
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 ACQJ160X125-20SB FAQ
It provides a push force of 10053.1 N and a pull force of 9424.8 N at 0.5 MPa, 14074.3 N push at 0.7 MPa, and a maximum push of 2050 kgf at 1.0 MPa. The full stroke is 125 mm with a 20 mm adjustable window, allowing a usable extend range of 105-125 mm.
An external M36x2.0 threaded stop with a lock nut mechanically limits the extend distance without altering the piston area, so force remains identical to a standard ACQ. The cylinder uses fixed elastomer bumpers, not adjustable air cushions. It will not hold a load on air loss; use an external rod lock or pilot-operated check valve for fail-safe holding.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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Related AirTAC ACQJ Compact Cylinders
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