Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X300-100B
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X300-100B is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 300mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ40 mm
- Full stroke300 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X300-100B
The ACQJ40X300-100B is a double-acting, single-rod JIS compact cylinder built for applications requiring variable extend positioning. Featuring a 300mm stroke, this long-stroke variant is engineered as a made-to-order solution for extended reach requirements beyond the 100mm standard maximum. An external threaded stop with a lock nut on the rod-end side allows you to fine-tune the extend end position directly on your equipment, shortening the extend travel by up to 100mm. This yields a usable extend range of 200-300mm, while the retract stroke remains completely unaffected.
Because the adjustment mechanism only limits travel and does not alter piston area, the output force stays identical to a standard ACQ of the same bore. At 0.5 MPa, it delivers 628.3N of push force and 527.8N of pull force. The unit incorporates a fixed NBR elastomer bumper at each end for end-of-stroke deceleration and includes sensor grooves on the body, though this specific configuration ships without a magnet. Equipped with a male M14x1.5 piston rod end, it couples directly to your load. The standard PT1/8 port and 16mm rod diameter ensure straightforward integration.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X300-100B Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X300-100B |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Full stroke | 300 mm |
| Adjuster thread | M12×1.25 |
| Port size | PT1/8 |
| 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 | M8×1.25 (F) / M14×1.5 (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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 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 ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X300-100B
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | 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 ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X300-100B Is Used
Extended-Reach Elevators
Lifts materials to varying heights on a 300mm vertical stroke, using the external stop to set precise 200-300mm upper endpoints without machining new spacers.
Multi-Width Conveyor Diverter
Pushes product lanes across a long 300mm span, adjusting the extend stop on the fly during product family changeovers to hit exact divert positions.
Long-Stroke Press Setup
Actuates a forming tool over a 300mm travel, dialing in the 100mm adjustment window during initial trials to find the optimal forming depth.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X300-100B the Right Cylinder?
When sizing this model, consider the 628.3N push force at 0.5 MPa; stepping down to a 32mm bore yields 402.1N, whereas moving up to a 50mm bore provides 981.8N. If your extend endpoint never varies, a fixed-stroke ACQ cylinder is sufficient. To order, confirm the 40mm bore, 300mm full stroke, 100mm adjustment window, the male rod thread (-B), and whether a magnet (-S) is needed for position sensing. Keep in mind this 300mm stroke is a long-stroke variant exceeding the 100mm standard max for this bore. Note that a plain compact cylinder does not hold its load on air loss; for fail-safe holding, specify an external rod lock or pilot-operated check valve. For high kinetic energy at the extended 300mm position, add an external shock absorber or slow the approach speed.
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 ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X300-100B FAQ
This 40mm bore cylinder has a 300mm full stroke with a 100mm adjustment window, giving a usable extend range of 200-300mm. It delivers 628.3N push and 527.8N pull force at 0.5 MPa, 879.6N push at 0.7 MPa, and a maximum push of 128 kgf at 1.0 MPa. The port size is PT1/8.
The external threaded stop (R thread M12x1.25) and lock nut physically limit how far the rod extends, shortening the stroke without changing the piston area, so force remains identical to a standard ACQ. The retract stroke is unaffected. Deceleration is handled by a fixed NBR elastomer bumper, not an adjustable air cushion. Because it lacks a rod lock, the cylinder will drift on air loss; use an external rod lock for fail-safe load holding.
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Related AirTAC ACQJ Compact Cylinders
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