Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ160X40-20S
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ160X40-20S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø160mm bore and 40mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ160 mm
- Full stroke40 mm
- Port sizePT3/8
- Adjuster threadM36×2.0
About the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ160X40-20S
The ACQJ160X40-20S is a double-acting, single-rod JIS compact cylinder engineered for big-bore applications requiring adaptable extend end-points. An external M36x2.0 threaded stop with a lock nut restricts how far the rod travels outward, providing a usable extend range of 20 to 40 mm. The retract stroke remains completely unaffected by this adjustment. Because the internal piston area stays constant, output force equals that of a standard ACQ of this size.
This Ø160 mm bore variant achieves 10053.1 N of push force at 0.5 MPa and tolerates operating pressures up to 1.0 MPa. It incorporates a fixed NBR elastomer bumper at each end to absorb impact energy rather than relying on adjustable pneumatic cushioning. Equipped with a piston magnet (-S), the body accepts both reed and solid-state electronic switches for precise position sensing.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ160X40-20S Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ160X40-20S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø160 mm |
| Full stroke | 40 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 ACQJ160X40-20S
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 160 | 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 ACQJ160X40-20S Is Used
Press Tonnage Setup
Dial in the exact 20 to 40 mm extend position on a large metal-stamping press during initial tooling setup, avoiding the need to machine custom spacer rings.
Heavy Fixture Changeover
Adapt a large machining center's pneumatic clamp stroke when swapping out heavy production fixtures, accommodating varying part thicknesses instantly.
Assembly Stroke Proving
Test multiple end-stop depths on an automotive assembly line press to determine the optimal crushing distance for new bearing components before finalizing the design.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ160X40-20S the Right Cylinder?
Selecting this 160 mm bore yields a massive 10053.1 N push at 0.5 MPa. If your application needs slightly less thrust, stepping down to an Ø140 bore provides 7696.9 N at the same pressure. Since this is the largest standard diameter in the compact series, moving up would require a different cylinder family entirely. A fixed-stroke ACQ is sufficient if your end position never varies. Confirm your ordering essentials: 160 mm bore, 40 mm full stroke, 20 mm window, the -S magnet option, and the default 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 ACQJ160X40-20S FAQ
This cylinder provides 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 40 mm with a 20 mm window, allowing the usable extend range to be fine-tuned anywhere from 20 mm to 40 mm.
No, altering the extend stroke length does not change the piston area, so force remains identical to a standard ACQ of this bore. Deceleration is handled by a fixed elastomer bumper at each end, not an adjustable air cushion. Note that this plain compact cylinder does not hold its load on air loss; use an external rod lock for fail-safe holding.
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