Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X300-10S
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X300-10S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø125mm bore and 300mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ125 mm
- Full stroke300 mm
- Port sizePT3/8
- Adjuster threadM27×2.0
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X300-10S
The AirTAC ACQJ125X300-10S is a double-acting, single-rod JIS compact cylinder featuring a big 125 mm bore and a 300 mm full stroke. An external M27x2.0 threaded stop with a lock nut limits the extend end position, providing a usable extend range of 290 to 300 mm. The retract stroke remains completely unaffected by this adjustment. Because the piston area is unchanged, the output force is identical to a standard ACQ of this bore.
This large-bore variant generates 6135.9 N of push force and 5733.8 N of pull force at 0.5 MPa, reaching a maximum push capacity of 1251 kgf at 1.0 MPa. It includes a fixed NBR elastomer bumper at each end for end-of-stroke deceleration and features a built-in piston magnet (-S) for position sensing. The cylinder operates at speeds from 30 to 500 mm/s and uses a PT3/8 port.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X300-10S Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X300-10S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø125 mm |
| Full stroke | 300 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 ACQJ125X300-10S
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×300 | 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 ACQJ125X300-10S Is Used
Heavy Press Tonnage Setup
Dial in the exact 290-300 mm extend position during heavy press commissioning without machining custom spacer rings.
Automated Welding Changeover
Shift the extend stop by a few millimeters to accommodate new fixture heights during automotive welding line product changeovers.
Large Assembly Machine Trials
Find the optimal end position for large-component assembly tooling on the fly, locking the M27x2.0 adjuster nut once the target hit is verified.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X300-10S the Right Cylinder?
When sizing this actuator, consider the neighbouring bores: stepping down to a 100 mm bore yields 3927.0 N push @0.5 MPa, while stepping up to a 140 mm bore provides 7696.9 N push @0.5 MPa. If your application requires a fixed extend end position that never varies, a standard ACQ cylinder without the external adjuster will suffice. To order, confirm the 125 mm bore, 300 mm full stroke, 10 mm adjustment window, the -S magnet option, 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 ACQJ125X300-10S FAQ
This cylinder provides 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. It has a 300 mm full stroke with a 10 mm adjustable window, giving a usable extend range of 290-300 mm. The piston rod is 32 mm, the port is PT3/8, the female rod-end thread is M22x2.5, and the external adjuster thread is M27x2.0.
The external threaded stop and lock nut mechanically limit how far the rod extends, allowing on-machine tuning without replacing parts. The adjuster changes stroke length only, so force remains identical to a standard ACQ. A fixed NBR elastomer bumper decelerates the load near stroke ends, but a plain cylinder does not hold its load on air loss; for fail-safe holding, use an external rod lock or pilot-operated check valve.
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