Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X20-10S
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X20-10S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø125mm bore and 20mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ125 mm
- Full stroke20 mm
- Port sizePT3/8
- Adjuster threadM27×2.0
About the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X20-10S
The AirTAC ACQJ125X20-10S is a double-acting JIS compact cylinder from the big-bore range, featuring a 125mm bore and a 20mm full stroke. An external M27x2.0 threaded stop with a lock nut limits the extend end position, providing a usable extend range of 10 to 20mm without changing parts. The retract stroke remains unaffected. A built-in piston magnet (-S) is included for position sensing.
Because the adjuster only alters stroke length and not piston area, output force is identical to a standard ACQ of this size, delivering 6135.9N push at 0.5 MPa. The cylinder uses a PT3/8 port, a Ø32mm rod, and fixed NBR elastomer bumpers at both ends for end-of-stroke deceleration rather than adjustable air cushions.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X20-10S Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X20-10S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø125 mm |
| Full stroke | 20 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 ACQJ125X20-10S
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×20 | 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 ACQJ125X20-10S Is Used
Press Fit Depth Tuning
Dial in precise bearing seating depth on an assembly line by adjusting the extend stop between 10 and 20mm during initial setup.
Product Changeover Stops
Quickly alter the extend end position for different product heights on a heavy-duty forming machine without swapping out cylinder hardware.
Fixture Clamp Positioning
Fine-tune the clamping reach on large machining fixtures to accommodate varying part tolerances using the external lock nut.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X20-10S the Right Cylinder?
When sizing this big-bore unit, note the 125mm bore yields 6135.9N push and 5733.8N pull at 0.5 MPa. Stepping down to a 100mm bore reduces push to 3927.0N, while moving up to a 140mm bore increases it to 7696.9N. If the exact 20mm extend position is fixed and never requires on-machine tweaking, a standard ACQ cylinder will suffice. Otherwise, confirm the 125mm bore, 20mm full stroke, 10mm adjuster window, -S magnet, and female M22x2.5 rod end thread when ordering.
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 ACQJ125X20-10S FAQ
It provides 6135.9N push and 5733.8N pull at 0.5 MPa, 8590.3N push at 0.7 MPa, and a maximum push of 1251 kgf at 1.0 MPa. The full stroke is 20mm with a 10mm adjustment window, allowing a usable extend range of 10 to 20mm.
The M27x2.0 threaded stop with lock nut physically limits rod extension, changing stroke length only while keeping force identical to a standard ACQ. The cylinder relies on fixed NBR elastomer bumpers for deceleration, not adjustable air cushions. It will not hold a load on air loss, so an external rod lock or pilot-operated check valve is required for fail-safe holding.
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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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