Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X35-20B
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X35-20B 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 ACQJ40X35-20B
The AirTAC ACQJ40X35-20B is a double-acting JIS compact cylinder featuring a 40mm bore and a male-thread piston rod end (M14x1.5) that couples directly to your load. An external M12x1.25 threaded stop and lock nut limits the extend end position, providing a usable extend range of 15-35mm from the 35mm full stroke. The retract stroke remains completely unaffected by this adjustment.
Because the internal piston area is unchanged, output force stays identical to a standard ACQ of this bore. The cylinder pushes with 628.3N and pulls with 527.8N at 0.5MPa, operating via a PT1/8 port. It relies on fixed NBR elastomer bumpers at both ends for end-of-stroke deceleration rather than adjustable air cushions.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X35-20B Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X35-20B |
|---|---|
| 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 ACQJ40X35-20B
| 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 ACQJ40X35-20B Is Used
Machining Fixture Clamps
Dial in the exact clamping reach on a CNC fixture during setup. The external stop lets operators shift the extend endpoint by up to 20mm without swapping cylinders.
Packaging Diverter Arms
Adjust the stroke length on a packaging line diverter to accommodate different carton sizes. The male rod thread mounts directly to the diverter linkage.
Assembly Press Stops
Set trial end positions for a light-duty assembly press. The fixed elastomer bumpers absorb the impact of the 35mm stroke at the end of travel.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X35-20B the Right Cylinder?
Selecting this 40mm bore provides 628.3N push force at 0.5MPa; stepping down to a 32mm bore drops push to 402.1N, while moving up to a 50mm bore increases it to 981.8N. If your application never requires end-position tuning, a fixed-stroke ACQ cylinder will suffice. When ordering this adjustable version, confirm the 40mm bore, 35mm full stroke, 20mm adjustment window, the male M14x1.5 rod thread, and note that this specific configuration ships without a magnet.
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 ACQJ40X35-20B FAQ
This 40mm bore cylinder delivers a push force of 628.3N and a pull force of 527.8N at 0.5MPa, with a push of 879.6N at 0.7MPa and a maximum push of 128kgf at 1.0MPa. The full stroke is 35mm, and with the 20mm adjustment window, the usable extend range is 15-35mm.
The external M12x1.25 threaded stop with lock nut physically limits how far the rod extends, shortening the stroke without changing the piston area, so force remains identical to a standard ACQ. The cylinder uses fixed elastomer bumpers for deceleration and does not hold its load on air loss; for fail-safe holding, use an external rod lock or pilot-operated check valve.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC ACQJ Compact Cylinders
Request a Quote for Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X35-20B
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.