Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X15-20SB
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X15-20SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 15mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ40 mm
- Full stroke15 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X15-20SB
The AirTAC ACQJ40X15-20SB is a double-acting JIS compact cylinder featuring a 40mm bore and a 15mm full stroke. An external M12x1.25 threaded stop with a lock nut limits the rod extension, providing a usable extend range of 0-15mm. The retract stroke remains completely unaffected by this adjustment. Because the piston area is unchanged, output force is identical to a standard ACQ of this bore.
Operating pressure ranges from 0.15 to 1.0 MPa, and the PT1/8 port feeds a 16mm piston rod. This SB configuration includes a male M14x1.5 rod-end thread for direct load coupling and a built-in piston magnet compatible with reed or solid-state switches. Deceleration relies on a fixed NBR elastomer bumper at each end rather than an adjustable air cushion.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X15-20SB Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X15-20SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Full stroke | 15 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 ACQJ40X15-20SB
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×15 | 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 ACQJ40X15-20SB Is Used
Machining Center Clamps
Dial in the exact clamping reach on a CNC fixture without machining new spacers, using the external stop to accommodate varying raw material thicknesses.
Packaging Changeover
Rapidly reposition the product pusher end point during format size changes on a wrapping line, minimizing mechanical downtime between product runs.
Assembly Press Stops
Establish trial end positions for pressing bearings on automated lines, allowing operators to fine-tune insertion depth directly on the equipment.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X15-20SB the Right Cylinder?
For lighter duties, a 32mm bore yields 402.1N push at 0.5 MPa, whereas stepping up to a 50mm bore provides 981.8N. If your machine never requires end-position tuning, a fixed-stroke ACQ cylinder suffices. When ordering this adjustable model, confirm the 40mm bore, 15mm full stroke, 20mm adjuster window, the S magnet option, and the B 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 ACQJ40X15-20SB FAQ
This 40mm bore cylinder delivers 628.3N push and 527.8N pull at 0.5 MPa, 879.6N push at 0.7 MPa, and a maximum push of 128 kgf at 1.0 MPa. The 15mm full stroke combined with the 20mm adjustment window yields a usable extend range of 0-15mm.
The external M12x1.25 threaded stop with lock nut physically limits how far the rod extends, shortening the stroke length only. It does not alter the piston area, so force remains identical to a standard ACQ. The fixed elastomer bumper handles end-of-stroke deceleration, and the SB magnet works with reed or electronic switches.
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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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