Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X100-75SB
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X100-75SB 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 ACQJ125X100-75SB
The ACQJ125X100-75SB is a double-acting JIS compact cylinder from the big-bore range, featuring a 125mm bore and a 100mm full stroke. An external M27x2.0 threaded stop with a lock nut limits the extend end position, giving you a usable forward range of 25 to 100 mm. 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 size, delivering 6135.9 N push at 0.5 MPa. This variant includes a male M30x1.5 rod end and a piston magnet for position sensing. It uses fixed NBR elastomer bumpers at both ends rather than adjustable air cushions.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X100-75SB Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X100-75SB |
|---|---|
| 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 ACQJ125X100-75SB
| 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 ACQJ125X100-75SB Is Used
Press Tooling Setup
Dial in the exact clamping reach during press tooling setup, allowing operators to fine-tune the 25 to 100 mm forward travel without machining new spacers.
Heavy Fixture Changeover
Adapt forming presses to different material thicknesses quickly by rotating the external stopper nut to shift the end position for product changeover.
Palletizer End Stops
Establish trial end positions on heavy palletizing equipment where the 6135.9 N force must bottom out at varying heights based on load dimensions.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X100-75SB the Right Cylinder?
When sizing this big-bore unit, stepping down to a 100mm bore yields 3927.0 N push, whereas moving up to a 140mm bore provides 7696.9 N push at 0.5 MPa. If your machine requires a fixed extend end position with no on-machine tuning, a standard ACQ cylinder will suffice. To order this adjustable version correctly, confirm the 125mm bore, 100mm full stroke, 75mm 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 ACQJ125~160 Adjustable Compact Cylinder ACQJ125X100-75SB FAQ
This 125mm bore cylinder provides 6135.9 N push and 5733.8 N pull at 0.5 MPa, 8590.3 N push at 0.7 MPa, and a maximum push of 1251 kgf at 1.0 MPa. The 75mm adjustment window on the 100mm full stroke creates a usable extend range of 25 to 100 mm.
The external M27x2.0 stopper screw mechanically limits forward travel without changing the piston area, so output force remains identical to a standard ACQ. The cylinder uses fixed elastomer bumpers for end deceleration, and because it lacks a physical lock, the rod will drift on air loss requiring an external rod lock for fail-safe holding.
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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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