Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X100-40SB
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X100-40SB 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 ACQJ125X100-40SB
The ACQJ125X100-40SB is a double-acting, single-rod JIS compact cylinder featuring an external threaded stop with a lock nut that limits the extend end position. By turning the M27x2.0 adjuster screw, you can fine-tune the usable extend stroke from 60 mm up to the full 100 mm directly on your machinery. The retract stroke remains completely unaffected by this mechanism. As a big-bore compact variant, this unit supports up to 300 mm of standard stroke while maintaining a space-saving integrated body design.
Because the piston area is unchanged, the output force is identical to a standard ACQ of the same bore. At 0.5 MPa, it delivers 6135.9 N of push force and 5733.8 N of pull force. The cylinder includes a male M30x1.5 piston rod end (-B) for direct load coupling, a built-in piston magnet (-S) compatible with both reed and solid-state switches, and fixed NBR elastomer bumpers at both ends for end-of-stroke deceleration.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X100-40SB Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X100-40SB |
|---|---|
| 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 ACQJ125X100-40SB
| 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 ACQJ125X100-40SB Is Used
Press Tonnage Setup
Dial in the exact 60 to 100 mm extend position during press tooling changes, ensuring precise material deformation without machining new spacers.
Heavy Fixture Changeover
Adapt large automotive welding fixtures rapidly by tweaking the extend stop outward, accommodating different panel thicknesses on the fly.
Bending Machine Trials
Establish precise end positions for heavy-gauge metal forming by testing various extend lengths until the desired bend angle is achieved.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X100-40SB the Right Cylinder?
When sizing this big-bore unit, consider the adjacent options: the smaller 100 mm bore yields 3927.0 N push at 0.5 MPa, while the larger 140 mm bore provides 7696.9 N push. If your process never requires altering the end position, a fixed-stroke ACQ cylinder will achieve the same clamping force more economically. To order this adjustable model correctly, confirm the 125 mm bore, 100 mm full stroke, 40 mm adjustment window, the -S magnet requirement, and the -B male rod thread. Remember that a standard ACQ-type cylinder will not hold a load if air pressure is lost; for fail-safe vertical holding, integrate an external rod lock or pilot-operated check valve.
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 ACQJ125X100-40SB FAQ
It provides 6135.9 N push and 5733.8 N pull force at 0.5 MPa, 8590.3 N push at 0.7 MPa, and a maximum push of 1251 kgf at 1.0 MPa. The full stroke is 100 mm, and with the 40 mm adjustment window, the usable extend range is 60-100 mm.
The external M27x2.0 threaded stop with lock nut limits how far the rod extends, shortening the forward stroke without altering piston area, so force remains identical to a standard ACQ. The retract stroke is unaffected. Fixed elastomer bumpers handle end-of-stroke deceleration, and the -S magnet works with reed or solid-state switches.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC ACQJ Compact Cylinders
Request a Quote for Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X100-40SB
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.