Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X300-10SB
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X300-10SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø140mm bore and 300mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ140 mm
- Full stroke300 mm
- Port sizePT3/8
- Adjuster threadM27×2.0
About the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X300-10SB
The AirTAC ACQJ140X300-10SB is a double-acting, single-rod JIS compact cylinder engineered for big-bore tasks, featuring an external M27x2.0 threaded stop and lock nut that restricts the EXTEND end position. You get a 300 mm full stroke with a 10 mm adjustment window, yielding a usable extend range of 290-300 mm. The RETRACT stroke remains completely unaffected. Because the piston area stays constant, the output force is identical to a standard ACQ of this bore.
This variant includes the male M30x1.5 rod-end thread for direct load coupling and the -S piston magnet for position sensing. Delivering 7696.9 N push and 7294.8 N pull at 0.5 MPa, it relies on fixed NBR elastomer bumpers at each end rather than adjustable air cushions. Operating pressure spans 0.15-1.0 MPa, and the big-bore compact body reaches up to 300 mm of standard stroke.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X300-10SB Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X300-10SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø140 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 (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 ACQJ140X300-10SB
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 140 | 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 ACQJ140X300-10SB Is Used
Press Tonnage Calibration
Dial in the exact 290-300 mm extend stop during press setup to test material forming limits without machining custom spacers.
Automotive Welding Line Changeover
Fine-tune the extend position on the fly for different chassis fixtures, utilizing the fixed NBR bumper to handle end-of-stroke impacts.
Heavy Pallet Positioning
Adjust the extend end-stop to align large 140 mm bore actuators with varying pallet heights before final clamping.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X300-10SB the Right Cylinder?
Selecting this 140 mm bore provides 7696.9 N push at 0.5 MPa; sizing down to a 125 mm bore yields 6135.9 N push, while stepping up to a 160 mm bore provides 10053.1 N push. If your end position never varies, a fixed-stroke ACQ cylinder is simpler and sufficient. When specifying, confirm the 140 mm bore, 300 mm full stroke, 10 mm window, the -S magnet, and the -B male rod thread. Note that a plain ACQ-type cylinder does not hold its load on air loss; for a fail-safe hold, specify an external rod lock or pilot-operated check valve.
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 ACQJ140X300-10SB FAQ
The usable extend range is 290-300 mm (300 mm full stroke minus up to a 10 mm window). It delivers 7696.9 N push and 7294.8 N pull at 0.5 MPa, 10775.7 N push at 0.7 MPa, and a maximum push of 1570 kgf at 1.0 MPa. The bore is 140 mm with a PT3/8 port.
The external M27x2.0 threaded stop changes the extend stroke length only; the force remains identical to a standard ACQ because the piston area is unchanged. The cylinder uses fixed NBR elastomer bumpers at each end for deceleration, not adjustable air cushions. The -S magnet works with reed or electronic solid-state switches.
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Related AirTAC ACQJ Compact Cylinders
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