Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ160X125-40S
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ160X125-40S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø160mm bore and 125mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ160 mm
- Full stroke125 mm
- Port sizePT3/8
- Adjuster threadM36×2.0
About the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ160X125-40S
The AirTAC ACQJ160X125-40S is a double-acting, single-rod JIS compact cylinder from the big-bore range, featuring an external threaded stop with a lock nut on the extend side. This mechanism allows you to fine-tune the extend end position directly on your machinery without swapping components. The usable extend range spans 85 to 125 mm, shortening the 125 mm full stroke by up to a 40 mm window, while the retract stroke remains completely unaffected.
Because the internal piston area stays the same, output force is identical to a standard ACQ of this size, yielding 10053.1 N push at 0.5 MPa. The unit incorporates fixed elastomer bumpers at each end rather than adjustable air cushions, and the -S option provides a built-in piston magnet compatible with reed or solid-state switches. Operating pressure spans 0.15 to 1.0 MPa, and the PT3/8 port pairs with a 40 mm rod and an M36x2.0 adjuster thread.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ160X125-40S Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ160X125-40S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø160 mm |
| Full stroke | 125 mm |
| Adjuster thread | M36×2.0 |
| 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 | M24×3.0 (F) / M36×1.5 (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 (Ø160mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 10053 N | 9425 N |
| 0.7 MPa | 14074 N | — |
| Max (@1.0 MPa) | 2050 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 ACQJ160X125-40S
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 160 | Bore size in mm. |
| ×125 | 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 ACQJ160X125-40S Is Used
Press Tonnage Calibration
Dial in the exact 85 to 125 mm extend position during press setup or tonnage calibration, allowing operators to alter the working distance on the fly without machining new spacers.
Heavy Fixture Positioning
Adapt clamping depth rapidly on large metal-forming fixtures when material thickness changes, relying on the 10053.1 N push force to secure heavy workpieces.
Large Assembly Jigs
Establish trial end stops on heavy-duty assembly jigs, tweaking the extend stroke by up to 40 mm to accommodate varied product dimensions before finalizing the mechanical stops.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ160X125-40S the Right Cylinder?
When sizing this big-bore 160 mm unit, consider the neighboring bore sizes for your force requirements. Stepping down to a 140 mm bore provides 7696.9 N push at 0.5 MPa, whereas stepping up is not available in this standard range as 160 mm is the largest. If your application never requires shifting the end position, a fixed-stroke ACQ cylinder will suffice and saves adjustment complexity. To order this adjustable version correctly, confirm the 160 mm bore, 125 mm full stroke, 40 mm window, the S magnet option, and your required female M24x3.0 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 ACQJ160X125-40S FAQ
This 160 mm bore cylinder delivers 10053.1 N push and 9424.8 N pull at 0.5 MPa, 14074.3 N push at 0.7 MPa, and a maximum push of 2050 kgf at 1.0 MPa. The full stroke is 125 mm with a 40 mm window, giving a usable extend range of 85 to 125 mm. It features a PT3/8 port, a 40 mm rod, an M24x3.0 female rod-end thread, and an M36x2.0 external adjuster thread.
The external threaded stop alters only the extend stroke length, not the piston area, so the output force remains identical to a standard ACQ of the same bore. The cylinder uses fixed elastomer bumpers at each end rather than adjustable air cushions. Note that a plain compact cylinder does not hold its load on air loss; for a fail-safe hold, you must add an external rod lock or pilot-operated check valve.
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Related AirTAC ACQJ Compact Cylinders
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