Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X20-10B
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X20-10B is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 20mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ40 mm
- Full stroke20 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X20-10B
The AirTAC ACQJ40X20-10B is a double-acting JIS compact cylinder featuring an external threaded stop and lock nut that limits the extend end position. You get a usable extend range of 10 to 20 mm, letting you fine-tune the forward stroke on the machine without swapping parts. The retract stroke remains completely unaffected.
Because the piston area stays constant, output force is identical to a standard ACQ of this bore, yielding 628.3 N push at 0.5 MPa. This 40 mm bore unit includes a male M14x1.5 piston rod end for direct load coupling, fixed NBR elastomer bumpers at both ends for end-of-stroke deceleration, and built-in sensor grooves. The body operates on PT1/8 porting up to 1.0 MPa.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X20-10B Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X20-10B |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Full stroke | 20 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 ACQJ40X20-10B
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×20 | 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 ACQJ40X20-10B Is Used
Machining Fixture Stops
Dial in the exact 10 to 20 mm extend position on a CNC machining fixture to accommodate varying raw casting lengths without fabricating custom stop blocks.
Product Changeover Diverter
Adjust the extend endpoint on a packaging line diverter arm during rapid product format changeovers, ensuring packages transition smoothly between conveyor belts.
Assembly Press Positioning
Set precise downward travel limits on a light-duty assembly press for pressing bearings, allowing operators to tweak insertion depth on the fly for different housing tolerances.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X20-10B the Right Cylinder?
When sizing this 40 mm bore, dropping to a 32 mm bore yields 402.1 N push, whereas stepping up to a 50 mm bore provides 981.8 N push at 0.5 MPa. If your application never requires stroke adjustments, a fixed-stroke ACQ cylinder will accomplish the same work. To order correctly, confirm the 40 mm bore, 20 mm full stroke, 10 mm adjuster window, the male M14x1.5 rod thread, and note this unit 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 ACQJ40X20-10B FAQ
It delivers 628.3 N push and 527.8 N pull at 0.5 MPa, 879.6 N push at 0.7 MPa, and a maximum push of 128 kgf at 1.0 MPa. The full stroke is 20 mm with a 10 mm adjustable window, giving a usable extend range of 10 to 20 mm.
The external M12x1.25 threaded stop with a lock nut mechanically limits the extend distance, meaning force remains identical to a standard ACQ since the piston area is unchanged. Fixed elastomer bumpers decelerate the rod at both ends, though the body lacks a sensor magnet on this specific configuration.
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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