Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ160X250-75SB
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ160X250-75SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø160mm bore and 250mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ160 mm
- Full stroke250 mm
- Port sizePT3/8
- Adjuster threadM36×2.0
About the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ160X250-75SB
The AirTAC ACQJ160X250-75SB is a double-acting, single-rod JIS compact cylinder from the big-bore range, featuring a 250 mm full stroke and a 75 mm external adjustment window. An external threaded stop with a lock nut restricts how far the rod extends, yielding a usable forward travel range of 175-250 mm. The return stroke remains completely unaffected by this mechanism. Because the piston area stays constant, output force equals that of a standard ACQ of this size, giving 10053.1 N push and 9424.8 N pull at 0.5 MPa.
This unit includes a male M36x1.5 rod-end thread for direct load coupling and a PT3/8 air supply port. It carries the -S magnet for position sensing via reed or solid-state switches, and the -B male rod option. Travel termination relies on a fixed NBR elastomer bumper at each end rather than an adjustable air cushion. For high-energy cycles, add an external shock absorber, and use an external rod lock for fail-safe holding since standard pneumatic cylinders drift when air pressure is lost.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ160X250-75SB Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ160X250-75SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø160 mm |
| Full stroke | 250 mm |
| Adjuster thread | M36×2.0 |
| 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 | M24×3.0 (F) / M36×1.5 (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 (Ø160mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 10053 N | 9425 N |
| 0.7 MPa | 14074 N | — |
| Max (@1.0 MPa) | 2050 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 ACQJ160X250-75SB
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 160 | 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 ACQJ160X250-75SB Is Used
Heavy Press Tuning
Dial in the exact 175-250 mm extend position for large metal-forming presses during setup, ensuring precise clamping without machining custom spacers.
Automotive Line Changeover
Adapt large welding fixture stops rapidly on automotive assembly lines when shifting between vehicle platforms, using the external M36x2.0 adjuster.
Palletizer Stroke Setup
Modify the end-of-stroke pusher distance for varying pallet sizes on heavy-duty packaging conveyors without altering the cylinder mounting.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ160X250-75SB the Right Cylinder?
When sizing this big-bore 160 mm unit, consider the neighbouring bores: the 140 mm variant yields 7696.9 N push, while the 160 mm provides 10053.1 N at 0.5 MPa. Choose this model when your application requires massive thrust combined with on-the-fly extend length tuning between 175 and 250 mm. If the exact 250 mm forward position never varies, a fixed-stroke ACQ160X250 will suffice. To order, confirm the 160 mm bore, 250 mm full stroke, 75 mm window, the -S magnet, and the -B male M36x1.5 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 ACQJ160X250-75SB FAQ
It provides 10053.1 N push and 9424.8 N pull at 0.5 MPa, 14074.3 N push at 0.7 MPa, and a maximum push of 2050 kgf at 1.0 MPa. The full stroke is 250 mm with a 75 mm window, allowing the extend stroke to be adjusted down to 175 mm. The retract stroke remains fixed.
An external threaded stop with a lock nut mechanically limits the forward travel distance, meaning the force is identical to a standard ACQ because the piston area is unchanged. The cylinder uses a fixed NBR elastomer bumper for end-of-stroke deceleration, not an adjustable air cushion. It will not hold a load on air loss, so an external rod lock is required for fail-safe holding.
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Related AirTAC ACQJ Compact Cylinders
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