Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X70-40B
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X70-40B is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø32mm bore and 70mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ32 mm
- Full stroke70 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X70-40B
The AirTAC ACQJ32X70-40B is a double-acting JIS compact cylinder featuring a 32 mm bore and a 70 mm full stroke. An external threaded stop with a lock nut limits the extend end position, providing a usable forward range of 30 to 70 mm. The retract stroke remains completely unaffected. Because the piston area stays constant, output force is identical to a standard ACQ of this size.
This variant includes a male M14x1.5 rod-end thread for direct load coupling and uses a PT1/8 port. It ships without a magnet but retains magnetic-switch grooves on the body. Fixed NBR elastomer bumpers at both ends absorb end-of-stroke impact, operating effectively between -20 and +70 C at 30-500 mm/s.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X70-40B Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X70-40B |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø32 mm |
| Full stroke | 70 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 (Ø32mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 302 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 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 ACQJ32X70-40B
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×70 | 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 ACQJ32X70-40B Is Used
Machining Fixture Stops
Dial in the exact 30 to 70 mm extend position on a CNC machining fixture to accommodate raw part tolerances without fabricating new spacer blocks.
Packaging Changeover
Rapidly adjust the forward pusher stroke during packaging line product changeovers by turning the M12x1.25 external stop to match new carton depths.
Assembly Trial Positions
Test different end stops for a pressing operation on an electronics assembly line, fine-tuning the depth safely before locking the nut down.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X70-40B the Right Cylinder?
Choosing this 32 mm bore provides 402.1 N push and 301.6 N pull at 0.5 MPa. If your application requires less force, stepping down to a 25 mm bore yields 245.4 N push, while moving up to a 40 mm bore offers 628.3 N push. A fixed-stroke ACQ is sufficient if your end position never varies, but the ACQJ external adjuster is essential for on-machine tuning. Confirm ordering essentials: 32 mm bore, 70 mm full stroke, 40 mm 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 ACQJ32X70-40B FAQ
The usable extend range is 30 to 70 mm (70 mm full stroke minus the 40 mm window). Force is identical to a standard ACQ: 402.1 N push and 301.6 N pull at 0.5 MPa, 562.9 N push at 0.7 MPa, and a maximum push of 82 kgf at 1.0 MPa.
The external M12x1.25 threaded stop with lock nut physically limits how far the rod extends, shortening the forward stroke only. It does not alter piston area or force. Fixed NBR bumpers decelerate the rod at both ends, but the cylinder will not hold a load 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 usually ship in 3-4 days.
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Most inquiries answered within 7-8 hours.
Related AirTAC ACQJ Compact Cylinders
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