Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X40-30SB
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X40-30SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø140mm bore and 40mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ140 mm
- Full stroke40 mm
- Port sizePT3/8
- Adjuster threadM27×2.0
About the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X40-30SB
The AirTAC ACQJ140X40-30SB is a double-acting, big-bore JIS compact cylinder engineered for heavy-duty applications. It features an external M27x2.0 threaded stop with a lock nut that permits on-machine extend end-position tuning. You can dial the usable forward stroke down from the full 40 mm to a minimum of 10 mm, while the retract stroke remains completely unaffected.
Because the internal piston area stays constant, output force is identical to a standard ACQ of this bore size, delivering 7696.9 N of push force at 0.5 MPa. This unit includes a male M30x1.5 piston rod end for direct load coupling, an integrated piston magnet (-S) compatible with reed or solid-state switches, and fixed NBR elastomer bumpers at both ends for end-of-travel deceleration.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X40-30SB Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X40-30SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø140 mm |
| Full stroke | 40 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 (Ø140mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 7697 N | 7295 N |
| 0.7 MPa | 10776 N | — |
| Max (@1.0 MPa) | 1570 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 ACQJ140X40-30SB
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 140 | Bore size in mm. |
| ×40 | 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 ACQJ140X40-30SB Is Used
Heavy Stamping Presses
Dial in the exact bottom-dead-center position during heavy stamping setups without machining new spacers, ensuring precise metal forming depth on every tool change.
Large Mold Clamping
Accommodate varying mold heights on large injection or press machinery by fine-tuning the forward clamping reach on the factory floor quickly and safely.
Industrial Riveting
Establish trial end positions for oversized industrial riveting operations, allowing operators to set precise 10 to 40 mm forward travel limits for different fastener lengths.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X40-30SB the Right Cylinder?
For tasks needing slightly less thrust, the adjacent Ø125 bore provides 6135.9 N push at 0.5 MPa, whereas stepping up to the Ø160 bore yields 10053.1 N. If your application never requires end-position adjustments, a fixed-stroke ACQ cylinder will perform the same job more economically. When ordering this big-bore variant, confirm the 140 mm bore, 40 mm full stroke, 30 mm adjuster window, the -S magnet for sensing, and the -B male 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 ACQJ140X40-30SB FAQ
It provides 7696.9 N push and 7294.8 N pull at 0.5 MPa, 10775.7 N push at 0.7 MPa, and a maximum push of 1570 kgf at 1.0 MPa. The full stroke is 40 mm with a 30 mm adjustable window, giving a usable extend range of 10-40 mm.
The external M27x2.0 threaded stop mechanically limits the forward extension distance without altering the piston area, meaning force remains identical to a standard ACQ. The unit relies on fixed NBR elastomer bumpers for deceleration, and the integrated -S magnet works with reed or electronic 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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