Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X150-20S
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X150-20S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø125mm bore and 150mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ125 mm
- Full stroke150 mm
- Port sizePT3/8
- Adjuster threadM27×2.0
About the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X150-20S
The ACQJ125X150-20S is a double-acting, big-bore JIS compact cylinder with an external threaded stop and lock nut that limits the EXTEND end position. You get a usable extend range of 130-150 mm (full stroke 150 mm minus up to 20 mm), while the RETRACT stroke is unaffected. The adjuster (R thread M27x2.0) changes stroke length only, so the force is IDENTICAL to a standard ACQ of this bore.
Operating pressure is 0.15-1.0 MPa. The Ø32 mm piston rod has a female rod-end thread M22x2.5 and a PT3/8 port. Because the piston area is unchanged, this unit delivers 6135.9 N push and 5733.8 N pull at 0.5 MPa. A fixed elastomer NBR bumper decelerates near stroke end, and the -S magnet works with reed or electronic solid-state switches.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X150-20S Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X150-20S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø125 mm |
| Full stroke | 150 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 ACQJ125X150-20S
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×150 | 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 ACQJ125X150-20S Is Used
Heavy Press Fixtures
Dial in the exact clamping reach on large metal-bending presses during product-changeover without machining new stop collars.
Palletizing Stops
Fine-tune extend end positions on automated palletizers handling varied box sizes, using the 130-150 mm travel window.
Assembly Machine Setup
Establish trial end positions for heavy component insertion on automotive assembly lines before locking the nut.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X150-20S the Right Cylinder?
For sizing both ways: the next bore down is 100 mm (providing 3927.0 N push at 0.5 MPa), and the next bore up is 140 mm (providing 7696.9 N push at 0.5 MPa). Choose this 125 mm bore if your setup requires up to 1251 kgf max push at 1.0 MPa. If your fixture never needs end-position tuning, a fixed-stroke ACQ suffices. When ordering, confirm the bore, full stroke, 20 mm window, -S magnet, and female 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 ACQJ125X150-20S FAQ
It provides 6135.9 N push and 5733.8 N pull at 0.5 MPa, 8590.3 N push at 0.7 MPa, and a max push of 1251 kgf at 1.0 MPa. The full stroke is 150 mm with a 20 mm window, yielding a usable extend range of 130-150 mm.
The M27x2.0 external threaded stop with lock nut limits only the extend length, leaving retract intact and force unchanged. A plain ACQ-type does not hold its load on air loss; the rod drifts and the fixed elastomer bumper only decelerates near stroke end, so add an external rod lock for a fail-safe hold.
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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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