Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X35-20SB
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X35-20SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 35mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ40 mm
- Full stroke35 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X35-20SB
The AirTAC ACQJ40X35-20SB is a double-acting JIS compact cylinder with a 35mm full stroke and a 20mm external adjustment window, allowing the extend end position to be fine-tuned from 15mm to 35mm directly on your equipment. Retraction travel remains fixed at the standard 35mm. Because the threaded stop only limits travel, the piston area stays the same, meaning output force is identical to a standard ACQ of this bore.
This variant includes a built-in piston magnet (-S) for compatibility with reed or solid-state electronic switches, and a male M14x1.5 rod-end thread (-B) for direct load coupling. It features a 16mm piston rod, PT1/8 porting, and fixed NBR elastomer bumpers at both ends. Operating pressure ranges from 0.15 to 1.0 MPa, with a maximum speed of 500 mm/s.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X35-20SB Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X35-20SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Full stroke | 35 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 ACQJ40X35-20SB
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×35 | 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 ACQJ40X35-20SB Is Used
Machining Fixture Stops
Dial in the exact clamping reach on a CNC machining fixture, accommodating different raw material widths without swapping out cylinder hardware.
Packaging Changeover
Adjust the tucking arm extension depth on a packaging line to handle varying carton sizes quickly, keeping downtime to a minimum.
Assembly Press Trial
Safely test and set the precise pressing depth for bearing insertion on an assembly line before locking down the final end position.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X35-20SB the Right Cylinder?
Choosing this 40mm bore provides a push force of 628.3N at 0.5 MPa. If your application requires less force, the next size down (32mm bore) yields 402.1N push; stepping up to a 50mm bore provides 981.8N. A fixed-stroke ACQ cylinder is sufficient if your extend position never needs tweaking, but the ACQJ saves time during product changeovers. Confirm your ordering essentials: 40mm bore, 35mm full stroke, 20mm window, magnet, and 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 ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X35-20SB FAQ
At 0.5 MPa it provides 628.3N push and 527.8N pull force, and 879.6N push at 0.7 MPa. The maximum push is 128 kgf at 1.0 MPa. The full stroke is 35mm with a 20mm adjustment window, yielding a usable extend range of 15-35mm.
An external M12x1.25 threaded stop with a lock nut limits the extend length without changing the piston area, so force remains identical to a standard ACQ. Deceleration relies on fixed elastomer bumpers, not adjustable air cushions. For fail-safe load holding on air loss, an external rod lock is required.
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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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