Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X250-10S
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X250-10S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø140mm bore and 250mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ140 mm
- Full stroke250 mm
- Port sizePT3/8
- Adjuster threadM27×2.0
About the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X250-10S
The AirTAC ACQJ140X250-10S is a double-acting, single-rod JIS compact cylinder engineered for big-bore applications up to 300 mm stroke. It features an external M27x2.0 threaded stop with a lock nut on the rod-end side, permitting on-machine end-position tuning without swapping components. The extend stroke can be shortened by up to 10 mm, yielding a usable extend range of 240-250 mm, while the retract stroke remains completely unaffected.
Because the adjuster limits travel length without altering piston area, the output force remains identical to a standard ACQ of this bore. At 0.5 MPa, it delivers 7696.9 N of push force and 7294.8 N of pull force. The unit incorporates fixed NBR elastomer bumpers at each end for end-of-stroke deceleration, and the integrated -S magnet supports both reed and solid-state electronic switches.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X250-10S Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X250-10S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø140 mm |
| Full stroke | 250 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 (Ø140mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 7697 N | 7295 N |
| 0.7 MPa | 10776 N | — |
| Max (@1.0 MPa) | 1570 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 ACQJ140X250-10S
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 140 | Bore size in mm. |
| ×250 | 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 ACQJ140X250-10S Is Used
Press Tonnage Trials
Dial in the exact 240-250 mm extend endpoint during stamping press setup to test material forming depths before finalizing the mechanical stop.
Heavy Fixture Changeover
Adapt a large welding line to new product heights by turning the external M27x2.0 adjuster, avoiding the need to physically replace the cylinder.
Large Platen Leveling
Fine-tune the parallelism of a heavy molding platen by micro-adjusting the extend limit on the fly, ensuring even pressure distribution across the tool.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X250-10S the Right Cylinder?
When sizing this 140 mm bore actuator, consider the neighboring big-bore options for scaling force. Stepping down to the 125 mm bore yields 6135.9 N push at 0.5 MPa, whereas stepping up to the 160 mm bore provides 10053.1 N push at 0.5 MPa. If your equipment requires a fixed extend endpoint that never varies, a standard ACQ cylinder without the external adjuster will suffice. To order this adjustable model correctly, confirm the 140 mm bore, 250 mm full stroke, 10 mm adjustable window, the -S magnet for position sensing, 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 ACQJ140X250-10S FAQ
This 140 mm bore cylinder provides 7696.9 N push and 7294.8 N pull at 0.5 MPa, and 10775.7 N push at 0.7 MPa. The maximum push force is 1570 kgf at 1.0 MPa. The full stroke is 250 mm with a 10 mm adjustable window, giving a usable extend range of 240-250 mm.
No, the external M27x2.0 threaded stop alters only the extend stroke length, leaving the piston area and force unchanged from a standard ACQ. The cylinder uses fixed NBR elastomer bumpers at both ends for deceleration rather than adjustable air cushions. Note that a plain ACQ-type cylinder will not hold its load on air loss; for fail-safe holding, an external rod lock or pilot-operated check valve is required.
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