Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X100-40S
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X100-40S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø125mm bore and 100mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ125 mm
- Full stroke100 mm
- Port sizePT3/8
- Adjuster threadM27×2.0
About the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X100-40S
The AirTAC ACQJ125X100-40S is a double-acting, single-rod JIS compact cylinder from the big-bore range, featuring a 125mm bore and a 100mm full stroke. An external M27x2.0 threaded stop with a lock nut allows you to fine-tune the extend end position directly on the machine. You get a usable extend range of 60-100mm, shortening the outward travel by up to 40mm without swapping parts, while the retract stroke remains unaffected.
Because the piston area stays constant, output force is identical to a standard ACQ of this size. At 0.5 MPa it delivers 6135.9N push and 5733.8N pull. The body uses fixed NBR elastomer bumpers at each end rather than adjustable air cushions. Equipped with the -S magnet, the cylinder integrates with reed or electronic solid-state switches via its built-in grooves for precise positioning.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X100-40S Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X100-40S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø125 mm |
| Full stroke | 100 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 ACQJ125X100-40S
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×100 | 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 ACQJ125X100-40S Is Used
Heavy Press Changeovers
Adapt clamping depth rapidly on large metal-forming presses during product family transitions without machining new spacers.
Varying Fixture Stops
Dial in the exact extend position for multi-stage machining fixtures holding different cast iron blocks on the same line.
Pallet Positioning
Tune the outward push distance for large pallet handling systems to accommodate varying package widths on the fly.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X100-40S the Right Cylinder?
Selecting this 125mm bore provides massive push force up to 1251 kgf at 1.0 MPa. If your application needs less power, stepping down to a 100mm bore yields 3927.0N push at 0.5 MPa; moving up to a 140mm bore provides 7696.9N. Choose this adjustable model over a fixed-stroke ACQ when your setup requires trial end positions or frequent product-changeover stops. Confirm your ordering essentials: 125mm bore, 100mm full stroke, 40mm adjust window, -S magnet, 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 ACQJ125X100-40S FAQ
At 0.5 MPa it provides 6135.9N push and 5733.8N pull, and 8590.3N push at 0.7 MPa. The maximum push is 1251 kgf at 1.0 MPa. The full stroke is 100mm with a 40mm adjustment window, giving a usable extend range of 60-100mm.
The M27x2.0 external threaded stop and lock nut limit the outward travel distance only; force remains identical to a standard ACQ because piston area is unchanged. The cylinder uses fixed elastomer bumpers, not adjustable cushions. Note that a plain cylinder does not hold its load on air loss, so an external rod lock or pilot-operated check valve is recommended for fail-safe holding.
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Related AirTAC ACQJ Compact Cylinders
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