Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X250-20S
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X250-20S 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 ACQJ125X250-20S
The AirTAC ACQJ125X250-20S is a double-acting, JIS compact cylinder featuring an external adjustable extend stop. A threaded rod with a lock nut restricts the outward travel, allowing you to set the usable extend range between 230 and 250 mm. The return stroke remains at the full 250 mm. This big-bore unit handles up to 300 mm of total travel.
Because the piston area is unchanged, output force equals a standard ACQ of the same size, delivering 6135.9 N push at 0.5 MPa. It includes a piston magnet for position sensing and relies on a fixed NBR elastomer bumper at each end for end-of-stroke deceleration. The standard PT3/8 port and M22x2.5 female rod-end thread simplify integration into large fixtures.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X250-20S Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X250-20S |
|---|---|
| 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 ACQJ125X250-20S
| 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 ACQJ125X250-20S Is Used
Press Tooling Changeover
Dial in the exact 230-250 mm extend position during die swaps without machining custom spacers.
Heavy Material Forming
Set precise end-stops for large metal bending operations where a 6135.9 N push force is required.
Pallet Positioning Stops
Adjust the outward stroke on automated packaging lines to accommodate varying pallet heights.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X250-20S the Right Cylinder?
When sizing this 125 mm bore, dropping to an 80 mm bore yields 2513.2 N push, while stepping up to a 140 mm bore provides 7696.9 N at 0.5 MPa. If your application never requires end-position shifts, a fixed-stroke ACQ cylinder is sufficient. To order, confirm the 125 mm bore, 250 mm full stroke, 20 mm adjuster window, the S magnet option, and the female rod 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 ACQJ125X250-20S 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 full stroke is 250 mm with a 20 mm adjustable window, giving a usable extend range of 230-250 mm.
The external M27x2.0 threaded stop with a lock nut limits only the extend length; it does not alter piston area, so force remains identical to a standard ACQ. The retract stroke is unaffected. Deceleration is handled by a fixed NBR elastomer bumper, and the S magnet works with reed or electronic solid-state switches.
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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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