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AirTAC ACQJ Series · JIS Compact Adjustable-Stroke Cylinder

Airtac Adjustable Compact Cylinder ACQJ50~63 ACQJ63X25-30SB

The AirTAC Airtac Adjustable Compact Cylinder ACQJ50~63 ACQJ63X25-30SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø63mm bore and 25mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.

  • BoreØ63 mm
  • Full stroke25 mm
  • Port sizePT1/4
  • Adjuster threadM16×1.5
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About the Airtac Adjustable Compact Cylinder ACQJ50~63 ACQJ63X25-30SB

The AirTAC ACQJ63X25-30SB is a double-acting JIS compact cylinder with a 63mm bore and a 25mm full stroke. It features an external threaded stop with a lock nut on the extend side, allowing you to fine-tune the extend end position directly on your equipment. The usable extend range is 0-25mm, while the retract stroke remains completely unaffected.

Because the internal piston area is unchanged, the output force is identical to a standard ACQ of this bore, delivering 1558.6N push and 1401.5N pull at 0.5MPa. The unit includes a male M18x1.5 rod-end thread for direct load coupling, a PT1/4 port, and fixed NBR elastomer bumpers at both ends. The built-in piston magnet (-S) works seamlessly with both reed and solid-state electronic switches.

The external adjuster utilizes an M16x1.5 thread to set the extend limit. Operating pressure spans 0.15-1.0 MPa, with a proof pressure of 1.5 MPa and a speed range of 30-500 mm/s.

Airtac Adjustable Compact Cylinder ACQJ50~63 ACQJ63X25-30SB Technical Specifications

ModelAirtac Adjustable Compact Cylinder ACQJ50~63 ACQJ63X25-30SB
SeriesACQJ JIS compact adjustable-stroke cylinder
Bore sizeØ63 mm
Full stroke25 mm
Adjuster threadM16×1.5
Port sizePT1/4
FluidAir (filtered by 40µm element)
Operating pressure0.15 – 1.0 MPa
Proof pressure1.5 MPa
Temperature-20 to +70 °C
Speed range30 – 500 mm/s
Rod threadM10×1.5 (F) / M18×1.5 (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 (Ø63mm)

PressurePush forcePull force
0.5 MPa1559 N1402 N
0.7 MPa2182 N—
Max (@1.0 MPa)318 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 Adjustable Compact Cylinder ACQJ50~63 ACQJ63X25-30SB

ACQJJIS compact double-acting ADJUSTABLE-STROKE cylinder series.
63Bore size in mm.
×25Full stroke length in mm.
-0Adjustable window in mm (extend stroke can be shortened by up to this).
S / BMagnet (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 Adjustable Compact Cylinder ACQJ50~63 ACQJ63X25-30SB Is Used

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Machining Fixture Stops

Dial in the extend position to 0-25mm during part setup changes without swapping out cylinder hardware on the machining fixture.

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Product Changeover Guides

Modify the extend end stop on packaging lines to accommodate different carton sizes quickly and accurately on the fly.

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Assembly Press Tuning

Test and set exact trial end positions for pressing operations on automated assembly machinery before final lock down.

Is the Airtac Adjustable Compact Cylinder ACQJ50~63 ACQJ63X25-30SB the Right Cylinder?

If you need less force, the 50mm bore provides 981.8N push at 0.5MPa; for heavier loads, the 80mm bore yields 2513.2N. A fixed-stroke ACQ63 is sufficient if your extend position never varies. When ordering, verify the 63mm bore, 25mm full stroke, 30mm adjustment window, -S magnet, and -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
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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 Adjustable Compact Cylinder ACQJ50~63 ACQJ63X25-30SB FAQ

The push force is 1558.6N and pull is 1401.5N at 0.5MPa, with 2182N push at 0.7MPa and a maximum push of 318kgf at 1.0MPa. The full stroke is 25mm with a 30mm window, giving a usable extend range of 0-25mm; the retract stroke is unaffected.

The external M16x1.5 threaded stop with lock nut limits the extend stroke length only, so the force remains identical to a standard ACQ. The cylinder uses fixed NBR elastomer bumpers at each end, and the -S magnet supports both reed and electronic solid-state switches.

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Related AirTAC ACQJ Compact Cylinders

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