Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X175-40S
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X175-40S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø125mm bore and 175mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ125 mm
- Full stroke175 mm
- Port sizePT3/8
- Adjuster threadM27×2.0
About the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X175-40S
The AirTAC ACQJ125X175-40S is a double-acting, single-rod JIS compact cylinder from the big-bore range, featuring an external threaded stop with a lock nut that limits the extend end position. You can fine-tune the usable extend stroke anywhere from 135 mm up to the full 175 mm directly on your machinery without swapping parts. The retract stroke remains completely unaffected by this adjustment.
Because the piston area stays constant, output force is identical to a standard ACQ of this size, yielding 6135.9 N push at 0.5 MPa. The unit incorporates a fixed elastomer NBR bumper at each end for end-of-stroke deceleration and includes a built-in piston magnet (-S) for position sensing. This magnet is compatible with both reed and electronic solid-state switches.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X175-40S Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X175-40S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø125 mm |
| Full stroke | 175 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 ACQJ125X175-40S
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×175 | 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 ACQJ125X175-40S Is Used
Heavy Press Tonnage Setup
Dial in the exact 135 to 175 mm extend reach during heavy press changeovers, accommodating different die heights without fabricating new spacer blocks.
Large Fixture Positioning
Establish trial end positions on large machining fixtures, allowing operators to micro-adjust the external M27x2.0 stop nut to align bulky workpieces precisely.
Pallet Lift Height Tuning
Regulate the lifting height of heavy pallet stops in conveyor systems, compensating for varying pallet thicknesses by shortening the extend stroke on the fly.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X175-40S the Right Cylinder?
Selecting this 125 mm bore actuator involves balancing your force requirements against stroke adjustability; it provides 6135.9 N push and 5733.8 N pull at 0.5 MPa. If your application needs less force, stepping down to a 100 mm bore drops the push to 3927.0 N, whereas moving up to a 140 mm bore raises it to 7696.9 N. A fixed-stroke ACQ is sufficient if your end position never varies, but this ACQJ variant is necessary when setup-varying fixtures demand a 135-175 mm extend range. Confirm your ordering essentials: 125 mm bore, 175 mm full stroke, 40 mm window, -S magnet, 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 ACQJ125X175-40S FAQ
This cylinder delivers a push force of 6135.9 N and a pull force of 5733.8 N at 0.5 MPa, with a push of 8590.3 N at 0.7 MPa, and a maximum push of 1251 kgf at 1.0 MPa. The usable extend range is 135 to 175 mm, achieved by shortening the 175 mm full stroke by up to the 40 mm window.
An external M27x2.0 threaded stop with a lock nut mechanically limits how far the rod extends, changing only the stroke length while the output force remains identical to a standard ACQ. Deceleration is handled by a fixed elastomer bumper at each end, not an adjustable air cushion, so for high-speed loads an external shock absorber is recommended. Note that a plain compact cylinder does not hold its load on air loss; use an external rod lock for fail-safe holding.
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Related AirTAC ACQJ Compact Cylinders
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