Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X100-20B
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X100-20B is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 100mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ40 mm
- Full stroke100 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X100-20B
The ACQJ40X100-20B is a double-acting JIS compact cylinder featuring an external threaded stop with a lock nut that limits the extend stroke. You can fine-tune the extend end position on the machine without swapping parts, yielding a usable extend range of 80-100mm. The retract stroke remains unaffected. Because the piston area is unchanged, the output force is identical to a standard ACQ of the same bore.
This specific unit includes a male M14x1.5 piston rod end that couples directly to your load. It features a 16mm rod, PT1/8 porting, and an M12x1.25 adjuster thread. The body incorporates fixed elastomer NBR bumpers at both ends for end-of-stroke deceleration, and it operates at speeds from 30 to 500 mm/s. Note that this configuration ships without a magnet.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X100-20B Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X100-20B |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Full stroke | 100 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 ACQJ40X100-20B
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×100 | 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 ACQJ40X100-20B Is Used
Machining Fixture Stops
Dial in the extend stroke from 80 to 100mm on a CNC machining fixture to accommodate raw part tolerances without fabricating custom spacer blocks.
Packaging Changeover
Adjust the rod extension end point rapidly during product format changes on a packaging line, accommodating different carton depths seamlessly.
Assembly Press Tuning
Set trial end positions on an assembly press to test insertion depths, relying on the external stop to prevent overtravel during prototyping.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X100-20B the Right Cylinder?
When sizing this 40mm bore actuator, note it delivers 628.3N push and 527.8N pull at 0.5MPa. If your application requires less force, stepping down to a 32mm bore provides 402.1N push, while moving up to a 50mm bore yields 981.8N push. If your end position never varies, a fixed-stroke ACQ cylinder is sufficient. For this adjustable model, confirm your ordering essentials: 40mm bore, 100mm full stroke, 20mm adjust window, male rod thread (B), and no 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 ACQJ40X100-20B FAQ
The usable extend range is 80-100mm. Force is identical to a standard ACQ: push is 628.3N and pull is 527.8N at 0.5MPa, push is 879.6N at 0.7MPa, and max push is 128kgf at 1.0MPa. The 20mm adjustment window only alters stroke length, not force.
An external M12x1.25 threaded stop with a lock nut limits the extend stroke, while the retract stroke remains unaffected. The cylinder uses fixed elastomer bumpers rather than adjustable air cushions. This specific model lacks a magnet, though the body retains sensor grooves for adding switches if needed.
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
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