Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X100-20S
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X100-20S 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 ACQJ125X100-20S
The ACQJ125X100-20S is a double-acting JIS compact cylinder featuring a big 125mm bore and a 100mm full stroke. An external threaded stop with a lock nut limits the extend travel, allowing you to fine-tune the usable extend range from 80mm to 100mm directly on the machine without swapping parts. The retract stroke remains completely unaffected. Built with a 32mm piston rod and PT3/8 ports, it delivers a push force of 6135.9N at 0.5MPa, identical to a standard ACQ because the adjuster alters stroke length only, not piston area.
This variant includes the -S magnet for compatibility with both reed and electronic solid-state switches. It relies on a fixed NBR elastomer bumper at each end for end-of-stroke deceleration rather than an adjustable air cushion. Note that a plain compact cylinder does not hold its load on air loss; for fail-safe holding, an external rod lock or pilot-operated check valve is required.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X100-20S Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X100-20S |
|---|---|
| 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 ACQJ125X100-20S
| 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 ACQJ125X100-20S Is Used
Heavy Press Tonnage Setup
Dial in the exact 80-100mm extend position on a large pneumatic press during initial tooling setup, avoiding machined spacer rings.
Automotive Product Changeover
Quickly adjust the extend end-stop within the 20mm window when switching between automotive sub-assembly fixtures on the same line.
Large Welding Fixture Trials
Test varying clamping reach on a multi-spot welding jig by threading the external stop in or out before locking the nut.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X100-20S the Right Cylinder?
When sizing this model, consider the neighbouring bores: the ACQJ100 offers 3927.0N push @0.5MPa, while the ACQJ140 provides 7696.9N. If your exact extend position never varies, a fixed-stroke ACQ125 cylinder suffices. To order the ACQJ125X100-20S, confirm the 125mm bore, 100mm full stroke, 20mm adjuster 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 ACQJ125X100-20S FAQ
It provides 6135.9N push and 5733.8N pull at 0.5MPa, 8590.3N push at 0.7MPa, and a maximum push of 1251 kgf at 1.0 MPa. The full stroke is 100mm, with a 20mm adjustable window giving a usable extend range of 80-100mm.
No, the force remains identical to a standard ACQ because the adjuster only changes stroke length, not piston area. The extend stop uses an M27x2.0 thread, and the cylinder uses fixed NBR elastomer bumpers rather than adjustable air cushions.
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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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