Airtac Adjustable Compact Cylinder ACQJ50~63 ACQJ50X300-75B
The AirTAC Airtac Adjustable Compact Cylinder ACQJ50~63 ACQJ50X300-75B is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø50mm bore and 300mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ50 mm
- Full stroke300 mm
- Port sizePT1/4
- Adjuster threadM16×1.5
- 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 Adjustable Compact Cylinder ACQJ50~63 ACQJ50X300-75B
The ACQJ50X300-75B is a double-acting JIS compact cylinder built for long-stroke applications requiring precise extend positioning. It features a 300mm stroke with an external M16x1.5 threaded stop and lock nut, allowing you to fine-tune the extend end position from 225mm up to the full 300mm on the machine. The retract stroke remains completely unaffected by this adjustment. This made-to-order variant exceeds the 100mm standard stroke limit for a 50mm bore.
Because the adjuster only limits travel length, the piston area stays the same, meaning force is identical to a standard ACQ. At 0.5 MPa it delivers 981.8N push and 824.6N pull, with a maximum push of 200kgf at 1.0MPa. The male M18x1.5 rod end couples directly to your load, while fixed NBR elastomer bumpers absorb impact at both ends. Note that this unit ships without a magnet, though the body retains sensor grooves for adding external switches.
Airtac Adjustable Compact Cylinder ACQJ50~63 ACQJ50X300-75B Technical Specifications
| Model | Airtac Adjustable Compact Cylinder ACQJ50~63 ACQJ50X300-75B |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø50 mm |
| Full stroke | 300 mm |
| Adjuster thread | M16×1.5 |
| Port size | PT1/4 |
| 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 | M10×1.5 (F) / M18×1.5 (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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 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 Adjustable Compact Cylinder ACQJ50~63 ACQJ50X300-75B
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 50 | 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 Adjustable Compact Cylinder ACQJ50~63 ACQJ50X300-75B Is Used
Fixture Depth Calibration
Dial in exact clamping depth on multi-part machining fixtures by turning the M16x1.5 adjuster to shorten the extend stroke within the 225-300mm window.
Product Changeover Stops
Adapt diverter arms on packaging lines for different carton lengths without swapping hardware, using the external stop to set new extend endpoints.
Assembly Press Tuning
Establish trial end positions for pressing operations on automated assembly equipment, finding the optimal stroke before finalizing mechanical hard stops.
Is the Airtac Adjustable Compact Cylinder ACQJ50~63 ACQJ50X300-75B the Right Cylinder?
Choosing this 50mm bore involves sizing against its neighbors: a 40mm bore yields 628.3N push, while a 63mm bore provides 1558.6N push at 0.5 MPa. This model's 981.8N push makes it suitable for medium-duty work. If exact 300mm extension is always required without variation, a fixed-stroke ACQ cylinder suffices. When ordering, confirm the 50mm bore, 300mm full stroke, 75mm adjustment window, male M18x1.5 rod thread (-B), and whether you need 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 Adjustable Compact Cylinder ACQJ50~63 ACQJ50X300-75B FAQ
This cylinder provides 981.8N push and 824.6N pull at 0.5 MPa, 1374.4N push at 0.7 MPa, and a maximum push of 200kgf at 1.0 MPa. The usable extend range is 225-300mm, meaning the 300mm full stroke can be shortened by up to the 75mm window.
The external M16x1.5 threaded stop with lock nut mechanically limits how far the rod extends, changing only the stroke length while keeping force identical to a standard ACQ. Fixed NBR bumpers decelerate the load near the ends, but a plain cylinder does not hold position on air loss; use an external rod lock for fail-safe holding.
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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.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC ACQJ Compact Cylinders
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