Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X200-50S
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X200-50S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø125mm bore and 200mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ125 mm
- Full stroke200 mm
- Port sizePT3/8
- Adjuster threadM27×2.0
About the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X200-50S
The ACQJ125X200-50S is a double-acting, single-rod JIS compact cylinder built for heavy-duty big-bore applications up to 300 mm of total travel. It features an external M27x2.0 threaded stop with a lock nut on the extend side, letting you fine-tune the forward end position directly on the machine. With a 200 mm full stroke and a 50 mm adjustment window, the usable extend range spans 150 to 200 mm. The retract movement remains completely unaffected by this mechanism.
Because the piston area stays constant, output force is identical to a standard ACQ of this size, delivering 6135.9 N of push at 0.5 MPa. The unit relies on a fixed NBR elastomer bumper at each end for end-of-stroke deceleration rather than an adjustable air cushion. An integrated piston magnet (-S option) is included, enabling position detection via either reed or solid-state electronic switches.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X200-50S Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X200-50S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø125 mm |
| Full stroke | 200 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 ACQJ125X200-50S
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×200 | 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 ACQJ125X200-50S Is Used
Heavy Press Tonnage Calibration
Dial in the exact 150-200 mm extend reach on a multi-ton metal stamping line to accommodate varying die heights without machining new spacer blocks.
Automated Plate Bending Setup
Establish trial end positions for thick steel plate forming, tweaking the stopper nut to find the optimal bend angle before locking it down.
Large Assembly Fixture Changeover
Adapt heavy machinery tooling stations quickly by shifting the extend limit to match new product dimensions, bypassing the need for custom length rods.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X200-50S the Right Cylinder?
Selecting this Ø125 bore provides 6135.9 N push and 5733.8 N pull force at 0.5 MPa, making it suitable for heavy pressing or lifting. If your application needs slightly less thrust, stepping down to a Ø100 bore yields 3927.0 N push, whereas moving up to a Ø140 bore offers 7696.9 N push. A fixed-stroke ACQ is sufficient if your forward position never varies. When ordering, confirm the 200 mm full stroke, the 50 mm adjuster window, the -S magnet requirement, and the default female M22x2.5 rod-end 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 ACQJ125X200-50S FAQ
At 0.5 MPa, push force is 6135.9 N and pull force is 5733.8 N; at 0.7 MPa, push is 8590.3 N, with a maximum push of 1251 kgf at 1.0 MPa. The full stroke is 200 mm with a 50 mm window, allowing a usable extend range of 150-200 mm. The piston rod is Ø32 mm, the port is PT3/8, the female rod-end thread is M22x2.5, and the external adjuster thread is M27x2.0.
No, altering the extend limit only changes the travel distance; the force remains identical to a standard ACQ because the piston area is unchanged. The cylinder uses a fixed elastomer bumper for deceleration and does not inherently hold loads on air loss, so an external rod lock or pilot-operated check valve is recommended for fail-safe holding.
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