Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X45-50SB
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X45-50SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 45mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ40 mm
- Full stroke45 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X45-50SB
The AirTAC ACQJ40X45-50SB is a double-acting JIS compact cylinder with a 45mm stroke and an external 50mm adjustment window. A threaded stop and lock nut on the rod-end side restricts forward extension, yielding a usable extend range of 0-45mm. The retract distance remains completely unaffected by this mechanism.
Because the piston area stays constant, output force equals that of a standard ACQ counterpart, delivering 628.3N push at 0.5MPa. The -B suffix equips the 16mm rod with a male M14x1.5 end thread for direct load mounting. The -S suffix provides a piston magnet compatible with reed or solid-state switches, while fixed NBR bumpers absorb impact at stroke ends without requiring manual cushion tuning.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X45-50SB Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X45-50SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 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 (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 ACQJ40X45-50SB
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | 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 ACQJ40X45-50SB Is Used
Machining Fixture Stops
Dial in the exact clamping extension on a CNC machining fixture without machining new spacers or swapping cylinder bodies.
Product Changeover Diverter
Adjust the stroke length on a packaging line diverter gate to accommodate different carton widths on the fly.
Prototype Press Testing
Safely test trial end positions and compression depths on a laboratory press before finalizing the mechanical hard stops.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X45-50SB the Right Cylinder?
If your application only requires a fixed 45mm reach, a standard ACQ40X45 cylinder is sufficient and more cost-effective. Choose this ACQJ40X45-50SB variant when your fixture setup or product changeovers demand variable end positions. For higher force needs, the 50mm bore offers 981.8N push at 0.5MPa; for lighter duty, the 32mm bore provides 402.1N. To order, confirm the 40mm bore, 45mm full stroke, 50mm window, the -S magnet, and the -B male M14x1.5 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 ACQJ40X45-50SB FAQ
It provides 628.3N push and 527.8N pull at 0.5MPa, 879.6N push at 0.7MPa, and a maximum push of 128kgf at 1.0MPa. The full stroke is 45mm with a 50mm window, allowing an adjustable extend range of 0-45mm.
No, the external M12x1.25 stop only limits extension length, not piston area, so force remains identical to a standard ACQ. The cylinder uses fixed NBR bumpers for deceleration and does not hold loads on air loss; for fail-safe holding, use an external rod lock.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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Related AirTAC ACQJ Compact Cylinders
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