Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X300-30SB
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X300-30SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø125mm bore and 300mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ125 mm
- Full stroke300 mm
- Port sizePT3/8
- Adjuster threadM27×2.0
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X300-30SB
The AirTAC ACQJ125X300-30SB is a double-acting, single-rod JIS compact cylinder engineered for big-bore applications requiring precise extend positioning. An external M27x2.0 threaded stop and lock nut restricts the outward stroke, yielding a usable extend span of 270 to 300 mm. The return stroke remains completely unaffected. Because the internal piston area stays constant, output force equals a standard ACQ of this exact size.
This variant includes a built-in piston magnet (-S) compatible with reed or solid-state electronic switches, plus a male M30x1.5 rod-end thread (-B) for direct load coupling. Deceleration relies on a fixed NBR elastomer bumper at each end. Operating pressure spans 0.15 to 1.0 MPa, and the PT3/8 port handles high flow rates for heavy-duty cycles.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X300-30SB Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X300-30SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø125 mm |
| Full stroke | 300 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 ACQJ125X300-30SB
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×300 | 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 ACQJ125X300-30SB Is Used
Heavy Press Tooling
Dial in the exact 270 to 300 mm extend reach during automotive stamping changeovers without machining new spacer blocks.
Large Fixture Calibration
Trial-fit assembly stops on heavy machinery by turning the external M27x2.0 adjuster to find the perfect part-contact point.
Pallet Positioning
Fine-tune the end-of-stroke clamping depth for varying pallet heights in automated warehouse handling systems.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X300-30SB the Right Cylinder?
When sizing this 125 mm bore unit, dropping down to a 100 mm bore yields 3927.0 N push at 0.5 MPa, while stepping up to a 140 mm bore provides 7696.9 N push. Choose this adjustable model only if your setup requires frequent end-position tweaking; a fixed-stroke ACQ suffices for static stops. Confirm your ordering essentials: 125 mm bore, 300 mm full stroke, 30 mm window, S magnet, and 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 ACQJ125X300-30SB FAQ
The usable extend range is 270 to 300 mm (full 300 mm stroke minus the 30 mm window). Force is identical to a standard ACQ: 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 M27x2.0 threaded stop with lock nut limits only the outward stroke; the retract stroke is unaffected. Force remains unchanged because the piston area is the same. Fixed NBR bumpers decelerate the load at stroke ends. For fail-safe load holding on air loss, add an external rod lock, as a plain ACQ-type cylinder will drift.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
Related AirTAC ACQJ Compact Cylinders
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