Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X20-10SB
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X20-10SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø125mm bore and 20mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ125 mm
- Full stroke20 mm
- Port sizePT3/8
- Adjuster threadM27×2.0
About the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X20-10SB
The AirTAC ACQJ125X20-10SB is a double-acting JIS compact cylinder featuring a big 125mm bore and an external extend-stop mechanism. A threaded rod-end stop with a lock nut lets you fine-tune the extend end position on the machine without swapping parts. The usable extend range spans 10 to 20mm, as the 10mm window shortens the 20mm full stroke, while the retract stroke remains completely unaffected. This unit includes a male piston rod thread (M30x1.5) for direct load coupling and a built-in magnet (-S) for position sensing.
Because the adjuster only limits travel and not the piston area, the force output is identical to a standard ACQ of this bore. It delivers 6135.9N push and 5733.8N pull at 0.5MPa, reaching 8590.3N push at 0.7MPa, with a maximum push capacity of 1251kgf at 1.0MPa. The body uses fixed NBR elastomer bumpers at each end for end-of-stroke deceleration rather than adjustable air cushions. Operating speed ranges from 30 to 500mm/s across a 0.15 to 1.0MPa pressure range.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X20-10SB Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X20-10SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø125 mm |
| Full stroke | 20 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 ACQJ125X20-10SB
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×20 | 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 ACQJ125X20-10SB Is Used
Press Tooling Changeover
Accommodate varying material thicknesses in a stamping press by dialing the extend stop in or out, avoiding the need for custom spacer blocks during product changeovers.
Heavy Fixture Clamping
Secure large welded assemblies in machining fixtures, using the 125mm bore's 6135.9N push at 0.5MPa to hold parts firmly while adjusting the clamping depth on the fly.
Industrial Pallet Stops
Act as a heavy-duty end stop for large pallets or totes on a conveyor line, tweaking the 10 to 20mm extend position to handle varying package sizes without reprogramming controls.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X20-10SB the Right Cylinder?
When sizing this big-bore compact cylinder, note that dropping to a 100mm bore reduces the 0.5MPa push force to 3927.0N, whereas stepping up to a 140mm bore increases it to 7696.9N. If your end position never varies, a fixed-stroke ACQ cylinder is sufficient and simpler. For this adjustable model, confirm the 125mm bore, 20mm full stroke, 10mm window, the -S magnet for electronic or reed switches, and the -B male rod thread. The PT3/8 port and M27x2.0 adjuster thread are fixed by the bore. Note that a plain ACQ-type does not hold its load on air loss; the rod drifts, so add an external rod lock or pilot-operated check valve for fail-safe holding.
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 ACQJ125X20-10SB FAQ
The usable extend range is 10 to 20mm (a 20mm full stroke shortened by a 10mm window). It generates 6135.9N push and 5733.8N pull at 0.5MPa, 8590.3N push at 0.7MPa, and a maximum push of 1251kgf at 1.0MPa. The retract stroke is unaffected by the adjuster.
An external M27x2.0 threaded stop with a lock nut limits the extend travel, allowing on-machine position tuning without altering the piston area, so force remains identical to a standard ACQ. The cylinder uses fixed NBR elastomer bumpers for deceleration, not adjustable air cushions, and the -S magnet works with both reed and solid-state electronic switches.
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Related AirTAC ACQJ Compact Cylinders
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