Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X125-100S
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X125-100S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø125mm bore and 125mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ125 mm
- Full stroke125 mm
- Port sizePT3/8
- Adjuster threadM27×2.0
About the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X125-100S
The AirTAC ACQJ125X125-100S is a double-acting, JIS compact cylinder from the big-bore range (up to 300mm max stroke). It features an external M27x2.0 threaded stop with a lock nut that limits the extend stroke, providing a usable extension range of 25 to 125mm. The retract stroke remains completely unaffected by this adjustment.
Because the piston area is unchanged, output force is identical to a standard ACQ of the same size. The cylinder body houses fixed NBR elastomer bumpers at both ends for end-of-stroke deceleration and includes a piston magnet (-S) for position sensing with reed or solid-state switches.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X125-100S Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X125-100S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø125 mm |
| Full stroke | 125 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 ACQJ125X125-100S
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 125 | 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 ACQJ125X125-100S Is Used
Heavy Press Tonnage Checks
Dial in the exact pressing distance on large metal-forming equipment during setup, allowing operators to test different material thicknesses without swapping out the entire cylinder body.
Automotive Welding Fixture Stops
Accommodate vehicle model changeovers on a single line by externally adjusting the extend end position, ensuring the welding gun retracts to the precise programmed spot for each chassis type.
Pallet Positioning Control
Vary the push-off distance for different pallet sizes on a packaging conveyor, using the external stop to fine-tune the extend limit on the factory floor without changing pneumatic plumbing.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X125-100S the Right Cylinder?
When sizing this 125mm bore unit, consider the 100mm bore for lower thrust (3927.0N push @0.5MPa) or step up to 160mm for higher thrust (10053.1N push @0.5MPa). If your application always operates at a fixed extension length and never requires on-machine tuning, a standard fixed-stroke ACQ cylinder is sufficient. To order this adjustable version, confirm the 125mm bore, 125mm full stroke, 100mm window, the -S magnet option, 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 ACQJ125X125-100S FAQ
It delivers 6135.9N push and 5733.8N pull at 0.5MPa, and 8590.3N push at 0.7MPa, with a maximum push force of 1251kgf at 1.0MPa. The full stroke is 125mm, but the external stop provides an adjustable extend range of 25-125mm.
The M27x2.0 threaded stop with lock nut mechanically limits only the extend stroke; force remains identical to a standard ACQ because the piston area is unchanged. It uses fixed NBR elastomer bumpers for deceleration, and since it is a plain pneumatic cylinder, the rod will drift on air loss, requiring an external rod lock for fail-safe load holding.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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Related AirTAC ACQJ Compact Cylinders
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