Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X75-75
The AirTAC Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X75-75 is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø20mm bore and 75mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ20 mm
- Full stroke75 mm
- Port sizeM5×0.8
- Adjuster threadM8×1.25
- 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 ACQJ12~25 Adjustable Compact Cylinder ACQJ20X75-75
The AirTAC ACQJ20X75-75 is a double-acting JIS compact cylinder featuring an external threaded stop with a lock nut that limits the extend end position. You can fine-tune the usable extend range from 0 up to 75 mm directly on your machinery without swapping components. The retract stroke remains completely unaffected by this adjustment.
Because the piston area stays constant, output force is identical to a standard ACQ of this bore, delivering 157.1 N push at 0.5 MPa. This variant uses a fixed elastomer TPU bumper at each end for end-of-stroke deceleration rather than an adjustable air cushion. The body incorporates magnetic-switch grooves, though this specific unit ships without a sensing magnet installed.
Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X75-75 Technical Specifications
| Model | Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X75-75 |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø20 mm |
| Full stroke | 75 mm |
| Adjuster thread | M8×1.25 |
| Port size | M5×0.8 |
| 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 | M5×0.8 (F) / M8×1.25 (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 (Ø20mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 157 N | 118 N |
| 0.7 MPa | 220 N | — |
| Max (@1.0 MPa) | 32 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 ACQJ12~25 Adjustable Compact Cylinder ACQJ20X75-75
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 20 | Bore size in mm. |
| ×75 | 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 ACQJ12~25 Adjustable Compact Cylinder ACQJ20X75-75 Is Used
Machining Fixture Clamping
Dial in the exact clamping reach on a CNC milling fixture. The external stop lets operators shift the extend endpoint to accommodate raw parts with varying raw material thicknesses.
Carton Forming Stops
Adjust the folding flap position on a packaging line during product changeover. You can shorten the extend stroke from 75 mm down to zero without disassembling the machine.
Bending Press Trial Positions
Set trial end positions for a small metal bending press. The lock nut secures the adjusted length, while the fixed elastomer bumper absorbs the impact at the end of travel.
Is the Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X75-75 the Right Cylinder?
When sizing this 20 mm bore actuator, stepping down to a 16 mm bore drops the 0.5 MPa push force to 100.5 N, while moving up to a 25 mm bore increases it to 245.4 N. If your equipment requires a fixed extend endpoint every cycle, a standard ACQ cylinder will suffice and avoids the external adjuster hardware. To order this adjustable version correctly, confirm the 20 mm bore, 75 mm full stroke, 75 mm adjustment window, female M5x0.8 rod-end thread, and whether you require the S magnet option for position sensing.
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 ACQJ12~25 Adjustable Compact Cylinder ACQJ20X75-75 FAQ
This 20 mm bore cylinder provides a push force of 157.1 N and a pull force of 117.8 N at 0.5 MPa, with a push of 219.9 N at 0.7 MPa, and a maximum push of 32 kgf at 1.0 MPa. The usable extend range is 0-75 mm, created by the 75 mm full stroke minus the 75 mm adjustment window.
The adjuster is an M8x1.25 threaded stop with a lock nut on the rod-end side that mechanically limits how far the rod extends, without changing the piston area or reducing the output force. Deceleration is handled by a fixed elastomer bumper, not an adjustable air cushion, so for high kinetic energy loads you should add an external shock absorber.
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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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