Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X200-75S
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X200-75S 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 ACQJ125X200-75S
The AirTAC ACQJ125X200-75S is a double-acting, JIS compact cylinder featuring an external threaded stop with a lock nut that limits the EXTEND end position. The full stroke is 200 mm, and the -75 mm window allows you to shorten the forward travel, yielding a usable extend range of 125 mm up to 200 mm. The RETRACT stroke remains completely unaffected by this adjustment.
Because the adjuster only restricts travel length and leaves the piston area unchanged, the output force is identical to a standard ACQ of this bore. At 0.5 MPa, it delivers 6135.9 N of push force and 5733.8 N of pull force. This big-bore variant uses a Ø32 mm piston rod, PT3/8 ports, and a fixed NBR elastomer bumper at each end for end-of-stroke deceleration.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X200-75S Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X200-75S |
|---|---|
| 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 ACQJ125X200-75S
| 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 ACQJ125X200-75S Is Used
Heavy Press Tonnage Setup
Dial in the exact extend position during heavy press tooling setups, allowing 125 to 200 mm of forward travel to accommodate varying material thicknesses without machining new spacers.
Large Assembly Line Changeover
Adapt large automotive assembly line stops quickly during product changeover, using the external M27x2.0 adjuster to set the exact extend endpoint for different pallet sizes.
Metal Forming Trial Positions
Test trial end positions on heavy metal forming and bending equipment, fine-tuning the stroke length on the machine to find the optimal forming depth before finalizing the mechanical stops.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X200-75S the Right Cylinder?
When sizing this model, stepping down to a 100 mm bore yields 3927.0 N push @0.5 MPa, while stepping up to a 140 mm bore provides 7696.9 N push @0.5 MPa. If your application requires a fixed end position and never needs on-the-fly adjustments, a standard ACQ cylinder of the same bore will suffice. To order correctly, confirm the 125 mm bore, 200 mm full stroke, 75 mm adjuster window, and the -S magnet for switch readiness. The default rod end is female M22x2.5, with PT3/8 port threads.
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 ACQJ125X200-75S FAQ
The usable extend range is 125-200 mm (a 200 mm full stroke minus up to a 75 mm window). The force is identical to a standard ACQ: push is 6135.9 N and pull is 5733.8 N at 0.5 MPa, push is 8590.3 N at 0.7 MPa, and the maximum push is 1251 kgf at 1.0 MPa.
The external M27x2.0 threaded stop with a lock nut limits only the extend stroke length; it does not alter the piston area, so force remains unchanged. The cylinder uses fixed NBR elastomer bumpers at both ends for deceleration, not an adjustable air cushion. The -S magnet works with reed or electronic solid-state switches.
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Related AirTAC ACQJ Compact Cylinders
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