Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X100-50S
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X100-50S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø125mm bore and 100mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ125 mm
- Full stroke100 mm
- Port sizePT3/8
- Adjuster threadM27×2.0
About the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X100-50S
The ACQJ125X100-50S is a double-acting JIS compact cylinder featuring a 125mm bore and a 100mm full stroke. An external M27x2.0 threaded stop with a lock nut lets you fine-tune the extend end position on the machine itself, yielding a usable forward travel range of 50 to 100mm. The return stroke remains completely unaffected by this adjustment.
Because the piston area stays constant, output force matches a standard ACQ exactly, delivering 6135.9N push and 5733.8N pull at 0.5MPa. This big-bore unit includes a piston magnet for position sensing and relies on fixed NBR elastomer bumpers at each end for end-of-stroke deceleration. Note that a plain compact cylinder drifts if air pressure is lost, so add an external rod lock if you require fail-safe load holding.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X100-50S Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X100-50S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø125 mm |
| Full stroke | 100 mm |
| Adjuster thread | M27×2.0 |
| Port size | PT3/8 |
| 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 | M22×2.5 (F) / M30×1.5 (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 (Ø125mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 6136 N | 5734 N |
| 0.7 MPa | 8590 N | — |
| Max (@1.0 MPa) | 1251 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 ACQJ125~160 Adjustable Compact Cylinder ACQJ125X100-50S
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×100 | 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 ACQJ125~160 Adjustable Compact Cylinder ACQJ125X100-50S Is Used
Heavy Press Tonnage Setup
Dial in the exact 50 to 100mm extend reach on a large stamping press during initial tool setup, preventing over-travel without machining custom spacers.
Automated Pallet Changeover
Adapt the forward stop position rapidly on an assembly line when switching between pallet sizes, using the external lock nut to secure the new stroke length.
Large Fixture Clamping
Adjust the clamping reach on machining fixtures to accommodate different part heights, relying on the 1251kgf max push capacity to hold heavy workpieces securely.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X100-50S the Right Cylinder?
Choosing this 125mm bore provides 6135.9N push force at 0.5MPa; stepping down to a 100mm bore yields 3927.0N, while a 140mm bore raises push output to 7696.9N. If your application never requires altering the extend length, a fixed-stroke ACQ cylinder suffices. When ordering, confirm the 125mm bore, 100mm full stroke, 50mm adjuster window, the S magnet option, and the default female M22x2.5 rod-end 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 ACQJ125~160 Adjustable Compact Cylinder ACQJ125X100-50S FAQ
This 125mm bore cylinder delivers 6135.9N push and 5733.8N pull at 0.5MPa, 8590.3N push at 0.7MPa, and a maximum push of 1251kgf at 1.0MPa. The full stroke is 100mm, but the external adjuster allows you to shorten the extend travel by up to 50mm, giving a usable forward range of 50 to 100mm.
An external M27x2.0 threaded screw with a lock nut mechanically limits how far the rod extends, changing only the stroke length while keeping force identical to a standard ACQ. The cylinder uses fixed NBR elastomer bumpers rather than adjustable air cushions, and the included S magnet works with both reed and electronic solid-state switches for position detection.
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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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