Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X250-50S
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X250-50S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø125mm bore and 250mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ125 mm
- Full stroke250 mm
- Port sizePT3/8
- Adjuster threadM27×2.0
About the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X250-50S
The AirTAC ACQJ125X250-50S is a JIS compact, double-acting single-rod cylinder featuring an external extend stop. A threaded rod-end adjuster with lock nut lets you fine-tune the forward end position on the machine, yielding a usable extend span of 200 to 250 mm. The return stroke remains completely unaffected by this mechanism. As a big-bore variant, it handles strokes up to 300 mm.
Because the piston area is unchanged, output force equals a standard ACQ of identical bore: 6135.9 N push and 5733.8 N pull at 0.5 MPa. The unit relies on a fixed NBR elastomer bumper at each end for end-of-travel deceleration rather than an adjustable air cushion. Equipped with a piston magnet (-S), it supports both reed and solid-state electronic switches via its integral mounting grooves.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X250-50S Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X250-50S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø125 mm |
| Full stroke | 250 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 ACQJ125X250-50S
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×250 | 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 ACQJ125X250-50S Is Used
Press Tooling Setup
Dial in the exact clamping reach on large metal-forming presses during initial tooling setup without machining custom spacers.
Heavy Fixture Changeover
Adapt automated assembly line end-stops rapidly when switching between heavy product variants requiring different extend depths.
Pallet Positioning
Tune the final pusher displacement on large-format palletizing equipment to accommodate varying package dimensions on the fly.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X250-50S the Right Cylinder?
Choosing this 125 mm bore yields 6135.9 N push at 0.5 MPa. If your application requires less thrust, stepping down to the 100 mm bore provides 3927.0 N push, whereas moving up to the 140 mm bore offers 7696.9 N. A fixed-stroke ACQ is sufficient if your forward position never varies. When ordering, verify the 250 mm total length, the 50 mm adjuster window, the -S magnet, and the default female M22x2.5 rod end.
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 ACQJ125X250-50S FAQ
It delivers 6135.9 N push and 5733.8 N pull at 0.5 MPa, 8590.3 N push at 0.7 MPa, and a maximum push of 1251 kgf at 1.0 MPa. The total stroke is 250 mm with a 50 mm window, allowing a usable extend range of 200 to 250 mm.
The M27x2.0 external threaded stop limits only the forward stroke length, leaving the piston area and output force identical to a standard ACQ. Deceleration is handled by fixed NBR elastomer bumpers, not an adjustable air cushion, so external shock absorbers are recommended for high-energy loads.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
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Most inquiries answered within 7-8 hours.
Related AirTAC ACQJ Compact Cylinders
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