Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X175-50S
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X175-50S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø125mm bore and 175mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ125 mm
- Full stroke175 mm
- Port sizePT3/8
- Adjuster threadM27×2.0
About the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X175-50S
The AirTAC ACQJ125X175-50S is a double-acting, single-rod JIS compact cylinder featuring an external extend stop. A threaded adjuster with a lock nut lets you set the effective extend stroke anywhere from 125 mm up to the full 175 mm. The retract distance remains at the standard 175 mm and is not affected by the adjuster. Because the piston area is unchanged, output force equals that of a standard ACQ of the same bore.
This big-bore variant provides 6135.9 N of push force at 0.5 MPa and includes a built-in piston magnet (-S) for use with reed or electronic solid-state switches. It uses an M27x2.0 adjuster thread, an M22x2.5 female rod-end thread, and PT3/8 ports. Fixed NBR elastomer bumpers absorb impact at both ends, making it suitable for high-force automation within the 300 mm max standard stroke range.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X175-50S Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X175-50S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø125 mm |
| Full stroke | 175 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.
Theoretical Output Force (Ø125mm)
| 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.
Model Code: Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X175-50S
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×175 | 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 ACQJ125X175-50S Is Used
Press Tooling Changeover
Adapt large forming presses to new die heights by dialing in the 125-175 mm extend travel without swapping cylinders.
Heavy Fixture Clamping
Secure oversized jigs on machining lines by fine-tuning the clamping endpoint on the machine to handle varying part tolerances.
Assembly Machine Setup
Establish trial end positions for heavy-duty joining operations, tweaking the extend limit precisely before finalizing the cycle.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X175-50S the Right Cylinder?
Selecting this 125 mm bore yields 6135.9 N push at 0.5 MPa; sizing down to an 80 mm bore drops push to 2513.2 N, while stepping up to a 140 mm bore raises it to 7696.9 N. If your end position never varies, a fixed-stroke ACQ cylinder is sufficient. When ordering, confirm the 175 mm full stroke, the 50 mm adjustment window, the -S magnet, and the default female M22x2.5 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 ACQJ125X175-50S FAQ
It delivers 6135.9 N push and 5733.8 N pull at 0.5 MPa, 8590.3 N push at 0.7 MPa, and a maximum push of 1251 kgf at 1.0 MPa. The full stroke is 175 mm with a 50 mm window, yielding a usable extend range of 125-175 mm. The piston rod is Ø32 mm with a female M22x2.5 thread, and the adjuster thread is M27x2.0.
No, the external threaded stop only changes the extend stroke length; the force remains identical to a standard ACQ because the piston area is unchanged. The cylinder uses fixed NBR elastomer bumpers at each end rather than adjustable air cushions. For high-energy or high-speed loads, add an external shock absorber or slow the approach. Note that a plain ACQ-type cylinder will drift on air loss; use an external rod lock or pilot-operated check valve for fail-safe load holding.
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