Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X250-10S
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X250-10S 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 ACQJ125X250-10S
The ACQJ125X250-10S is a double-acting, single-rod JIS compact cylinder from AirTAC's big-bore range, featuring an external threaded stop with a lock nut on the rod-end side. This mechanism limits the extend travel, allowing you to fine-tune the end position directly on the machine without swapping parts. With a full stroke of 250 mm and a 10 mm adjustment window, the usable extend range spans 240 to 250 mm, while the retract stroke remains completely unaffected.
Because the piston area is unchanged, the output force is identical to a standard ACQ of this bore, delivering 6135.9 N of push force at 0.5 MPa. The design incorporates fixed NBR elastomer bumpers at each end for deceleration rather than adjustable air cushions. Equipped with a built-in piston magnet (-S), it supports both reed and electronic solid-state switches via its integrated sensor grooves for precise position feedback.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X250-10S Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X250-10S |
|---|---|
| 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 ACQJ125X250-10S
| 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 ACQJ125X250-10S Is Used
Press Tooling Changeover
Adapts the extend end position for different die heights during metal stamping changeovers, using the external stop to dial in the exact 240-250 mm travel required.
Heavy Material Handling
Provides adjustable end stops for large diverter mechanisms handling bulk materials, allowing operators to tweak the extend distance without replacing the cylinder.
Large Fixture Clamping
Secures oversized machined parts by fine-tuning the clamping reach on the fly, accommodating varying part tolerances while maintaining full clamping force.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X250-10S the Right Cylinder?
When sizing this big-bore 125 mm unit, consider the adjacent standard bore options: the 100 mm bore yields a 3927.0 N push force, whereas the 160 mm bore provides 10053.1 N at 0.5 MPa. If your application requires a fixed extend distance with no on-machine variation, a standard ACQ cylinder will suffice. To order, confirm the 125 mm bore, 250 mm full stroke, 10 mm adjustment 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 ACQJ125X250-10S FAQ
The usable extend range is 240-250 mm (a 250 mm full stroke minus up to a 10 mm window). 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 force of 1251 kgf at 1.0 MPa.
The external M27x2.0 threaded stop limits only the extend stroke length, meaning the output force remains identical to a standard ACQ of the same bore. Deceleration is handled by fixed NBR elastomer bumpers at both ends, not adjustable air cushions.
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1-Year Warranty
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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