Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X40-10SB
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X40-10SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø125mm bore and 40mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ125 mm
- Full stroke40 mm
- Port sizePT3/8
- Adjuster threadM27×2.0
About the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X40-10SB
The ACQJ125X40-10SB is a big-bore JIS compact pneumatic cylinder featuring a double-acting single rod and an external extend stop. A threaded rod-end adjuster with an M27x2.0 thread and lock nut lets you set the extend stroke anywhere from 30 to 40 mm directly on your machinery. The retract movement remains completely unaffected by this mechanism.
Because the piston area stays constant, output force equals a standard ACQ of this size, delivering 6135.9 N push at 0.5 MPa. This variant includes a male M30x1.5 piston rod end for direct load coupling and a built-in magnet for position sensing. It relies on fixed NBR elastomer bumpers at each end for end-of-stroke deceleration rather than adjustable air cushions.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X40-10SB Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X40-10SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø125 mm |
| Full stroke | 40 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 ACQJ125X40-10SB
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×40 | 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 ACQJ125X40-10SB Is Used
Press Tooling Setup
Fine-tune the extend position of large forming dies during initial press tooling setup without machining new spacer blocks.
Heavy Fixture Changeover
Adapt clamping depth rapidly on large machining centers when swapping out heavy product fixtures for different production runs.
Pallet Lift Positioning
Dial in the exact raise height on heavy-duty pallet lift stations to accommodate varying load heights on the fly.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X40-10SB the Right Cylinder?
Selecting this 125 mm bore unit provides 6135.9 N push and 5733.8 N pull at 0.5 MPa. If your application requires less thrust, dropping to a 100 mm bore yields 3927.0 N push, whereas stepping up to a 140 mm bore offers 7696.9 N push. A fixed-stroke ACQ is sufficient if your end position never varies, but this ACQJ variant is necessary when on-the-fly extend adjustments are required. Confirm your ordering needs: 125 mm bore, 40 mm full stroke, 10 mm adjust window, male rod thread, and piston magnet.
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 ACQJ125X40-10SB FAQ
It delivers 6135.9 N push and 5733.8 N pull at 0.5 MPa, 8590.3 N push at 0.7 MPa, with a maximum push of 1251 kgf at 1.0 MPa. The full stroke is 40 mm, and with the 10 mm adjustment window, the usable extend range is 30 to 40 mm.
The external M27x2.0 threaded stop with lock nut limits only the extend length, leaving retract untouched. Force remains identical to a standard ACQ because the piston area is unchanged. The cylinder uses fixed elastomer bumpers, and since it lacks an internal lock, the rod will drift if air pressure is lost; use an external rod lock for fail-safe holding.
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1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
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Most inquiries answered within 7-8 hours.
Related AirTAC ACQJ Compact Cylinders
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