Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X200-20S
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X200-20S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø125mm bore and 200mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ125 mm
- Full stroke200 mm
- Port sizePT3/8
- Adjuster threadM27×2.0
About the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X200-20S
The ACQJ125X200-20S is a double-acting JIS compact cylinder featuring a 125mm bore and a 200mm full stroke. An external M27x2.0 threaded stop with a lock nut lets you fine-tune the extend end position on the machine, providing a usable forward range of 180 to 200mm without swapping parts. The retract stroke remains completely unaffected by this adjustment.
Because the piston area is unchanged, output force is identical to a standard ACQ of this size, delivering 6135.9N push and 5733.8N pull at 0.5MPa. This big-bore unit includes a built-in magnet for electronic or reed sensors and relies on fixed NBR elastomer bumpers at each end for end-of-travel deceleration.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X200-20S Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X200-20S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø125 mm |
| Full stroke | 200 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 ACQJ125X200-20S
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×200 | 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 ACQJ125X200-20S Is Used
Heavy Press Tonnage Setup
Dial in the exact 180-200mm extend contact point on a large pneumatic press during tooling setup, avoiding hard mechanical crashes while maintaining full 1251 kgf max push.
Automated Pallet Changeover
Adjust the forward stop externally to accommodate different pallet depths on a machining center transfer line, cutting changeover time without disassembling the cylinder.
Large Fixture Clamping
Tune the clamping reach on an automotive assembly fixture to compensate for part tolerance variations, ensuring consistent holding force across production runs.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X200-20S the Right Cylinder?
Selecting this 125mm bore provides 6135.9N push at 0.5MPa; dropping to a 100mm bore drops push to 3927.0N, while a 140mm bore raises it to 7696.9N. If your application never requires end-position tuning, a fixed-stroke ACQ cylinder provides the same power in a simpler package. When ordering this adjustable variant, confirm the 200mm full stroke, 20mm window, S magnet option, and the default M22x2.5 female 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 ACQJ125X200-20S FAQ
At 0.5 MPa it provides 6135.9N push and 5733.8N pull, and 8590.3N push at 0.7 MPa, with a maximum push of 1251 kgf at 1.0 MPa. The 20mm adjustable window allows the extend stroke to be shortened from the 200mm full stroke down to 180mm.
An external M27x2.0 threaded screw with a lock nut mechanically limits the forward travel, leaving retract stroke and piston area untouched so force remains identical to a standard ACQ. The cylinder uses fixed NBR bumpers rather than adjustable cushions, and because it is a plain air cylinder, it will not hold its load on air loss without an external rod lock or pilot check valve.
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Related AirTAC ACQJ Compact Cylinders
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