Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X45-20SB
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X45-20SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø32mm bore and 45mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ32 mm
- Full stroke45 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X45-20SB
The AirTAC ACQJ32X45-20SB is a double-acting JIS compact cylinder with an external threaded stop and lock nut on the rod-end side. This mechanism limits the extend travel, giving a usable forward range of 25 to 45 mm out of the 45 mm full stroke. The retract movement remains completely unaffected by this adjustment.
Because the piston area stays constant, output force is identical to a standard ACQ of the same bore, delivering 402.1 N push at 0.5 MPa. The unit includes a male M14x1.5 piston rod end for direct load coupling, a built-in magnet for electronic or reed switches, and fixed NBR elastomer bumpers at both ends. The M12x1.25 adjuster thread allows precise on-machine end-position tuning without swapping components.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X45-20SB Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X45-20SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø32 mm |
| Full stroke | 45 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 ACQJ32X45-20SB
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×45 | 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 ACQJ32X45-20SB Is Used
Machining Fixture Stops
Dial in the exact clamping reach on a CNC milling fixture during part changeovers using the external stop, avoiding the need to machine custom spacer blocks.
Carton Sealing Pushers
Modify the extension distance on a packaging line to accommodate varying box sizes, ensuring the push plate travels the correct forward distance every time.
Assembly Press Positioning
Establish trial end positions for pressing sub-components into housings, allowing operators to safely tweak the 25-45 mm forward travel directly on the machine.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X45-20SB the Right Cylinder?
When sizing this 32 mm bore actuator, consider the 25 mm option which yields 245.4 N push, or the 40 mm bore providing 628.3 N push at 0.5 MPa. If your application never requires stroke length changes, a fixed-stroke ACQ cylinder is sufficient. To order this adjustable version correctly, confirm the 32 mm bore, 45 mm full stroke, 20 mm 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 ACQJ32X45-20SB FAQ
It provides 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 usable extend range is 25-45 mm, created by shortening the 45 mm full stroke by up to a 20 mm window.
The external M12x1.25 threaded stop with a lock nut limits forward travel only, meaning force remains identical to a standard ACQ since piston area is unchanged. Deceleration is handled by fixed NBR elastomer bumpers at each end, not an adjustable air cushion, and the retract stroke stays unaffected.
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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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