Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X75-10SB
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X75-10SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø125mm bore and 75mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ125 mm
- Full stroke75 mm
- Port sizePT3/8
- Adjuster threadM27×2.0
About the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X75-10SB
The ACQJ125X75-10SB is a double-acting, single-rod JIS compact cylinder from AirTAC's big-bore range, engineered with an external mechanical stroke adjuster. A threaded stop and lock nut restrict the forward extend position, yielding a usable extend span of 65 to 75 mm from the 75 mm full stroke. The return stroke remains completely unaffected. Because the piston diameter is unaltered, output force is identical to a standard ACQ of this bore.
This configuration includes the male M30x1.5 piston rod end for direct load coupling and a built-in piston magnet (-S) compatible with reed or solid-state electronic switches. Operating pressure spans 0.15 to 1.0 MPa, and fixed NBR elastomer bumpers decelerate the rod at both ends. The body accepts PT3/8 supply ports and relies on an M27x2.0 adjuster thread for end-position tuning.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X75-10SB Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X75-10SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø125 mm |
| Full stroke | 75 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 ACQJ125X75-10SB
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×75 | 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 ACQJ125X75-10SB Is Used
Press Tonnage Setup
Dialing in the exact 65 to 75 mm extend reach during a press changeover to accommodate new die heights without swapping hardware.
Heavy Fixture Clamping
Modifying the clamping endpoint on large machining fixtures to secure different castings while maintaining 6135.9 N of holding force at 0.5 MPa.
Pallet Positioning Stops
Fine-tuning the upward extend stop on a heavy-duty pallet lift to alter the resting height for varying product dimensions.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X75-10SB the Right Cylinder?
When sizing this 125 mm bore, the adjacent 100 mm variant yields 3927.0 N push at 0.5 MPa, whereas the larger 140 mm bore provides 7696.9 N push at 0.5 MPa. If your end-position never varies, a fixed-stroke ACQ cylinder is sufficient. For this adjustable unit, confirm the 75 mm full stroke, the 10 mm window, the male rod thread (-B), and the magnet (-S) when ordering.
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 ACQJ125X75-10SB FAQ
The push force is 6135.9 N and pull is 5733.8 N at 0.5 MPa, increasing to 8590.3 N push at 0.7 MPa, with a maximum push of 1251 kgf at 1.0 MPa. The full stroke is 75 mm, but the external stop provides a 10 mm adjustment window, allowing a usable extend range of 65 to 75 mm. The retract stroke remains at the full 75 mm.
An external M27x2.0 threaded stop with a lock nut limits only the extend length, leaving the piston area and force unchanged. Fixed NBR elastomer bumpers decelerate the rod at both ends, but a plain ACQ-type cylinder does not hold its load on air loss; for fail-safe holding, install an external rod lock or pilot-operated check valve.
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