Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X200-75SB
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X200-75SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø125mm bore and 200mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ125 mm
- Full stroke200 mm
- Port sizePT3/8
- Adjuster threadM27×2.0
About the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X200-75SB
The AirTAC ACQJ125X200-75SB is a double-acting, single-rod JIS compact cylinder from the big-bore range, featuring an external M27x2.0 threaded stop with a lock nut on the rod-end side. This mechanism limits how far the rod extends, providing a usable extend range of 125 to 200 mm (the full 200 mm stroke minus up to a 75 mm window). The retract stroke remains completely unaffected. Because the piston area is unchanged, the output force is identical to a standard ACQ of this bore.
Operating between 0.15 and 1.0 MPa, this 125 mm bore model delivers 6135.9 N of push force at 0.5 MPa. It includes a male M30x1.5 piston rod end for direct load coupling, a built-in piston magnet for reed or solid-state sensors, and fixed NBR elastomer bumpers at each end for end-of-stroke deceleration. The unit uses PT3/8 ports and is not a tie-rod or ISO 15552 cylinder.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X200-75SB Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X200-75SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø125 mm |
| Full stroke | 200 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 ACQJ125X200-75SB
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×200 | 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 ACQJ125X200-75SB Is Used
Heavy Press Setup Tuning
Dial in the exact 125 to 200 mm extend position on a large metal stamping press during initial setup without machining custom spacers or changing cylinder bodies.
Product Changeover Stops
Quickly reposition the extend end stop to accommodate varying large-part dimensions on an automotive assembly line, cutting changeover time significantly.
Trial End Positions
Test different clamping depths on heavy woodworking machinery by adjusting the external stopper nut on the fly until the optimal material compression is found.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X200-75SB the Right Cylinder?
When sizing this big-bore 125 mm model, note the adjacent 100 mm bore yields 3927.0 N push at 0.5 MPa, while the larger 140 mm bore provides 7696.9 N. If your extend position never varies, a fixed-stroke ACQ cylinder is simpler and sufficient. Confirm your ordering essentials: 125 mm bore, 200 mm full stroke, 75 mm adjuster window, the S magnet option, and the B male rod thread. Note that a plain ACQ-type does not hold its load on air loss; specify 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 ACQJ125X200-75SB FAQ
This 125 mm bore cylinder provides 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 usable extend range is 125-200 mm via a 75 mm window. It features a PT3/8 port, an M27x2.0 adjuster thread, and an M30x1.5 male rod end.
No, the external threaded stop alters only the extend stroke length, not the piston area, so force remains identical to a standard ACQ. The retract stroke is unaffected. Deceleration is handled by fixed NBR elastomer bumpers at each end, not adjustable air cushions; for high kinetic energy loads, add an external shock absorber.
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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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