Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X100-75SB
The AirTAC Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X100-75SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø20mm bore and 100mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ20 mm
- Full stroke100 mm
- Port sizeM5×0.8
- Adjuster threadM8×1.25
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X100-75SB
The AirTAC ACQJ20X100-75SB is a double-acting JIS compact cylinder 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 25 mm up to the full 100 mm directly on the machine. The retract stroke remains completely unaffected by this adjustment. Because the piston area stays the same, the output force is identical to a standard ACQ of this bore size.
This model includes the -S magnet for reed or solid-state switches and the -B male piston rod end (M8x1.25) for direct load coupling. It delivers 157.1 N of push force at 0.5 MPa and utilizes a fixed elastomer bumper at each end for end-of-stroke deceleration. The standard PT port and 10 mm rod keep the profile compact while offering a 30-500 mm/s operating speed range.
Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X100-75SB Technical Specifications
| Model | Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X100-75SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø20 mm |
| Full stroke | 100 mm |
| Adjuster thread | M8×1.25 |
| Port size | M5×0.8 |
| 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 | M5×0.8 (F) / M8×1.25 (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 (Ø20mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 157 N | 118 N |
| 0.7 MPa | 220 N | — |
| Max (@1.0 MPa) | 32 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 ACQJ12~25 Adjustable Compact Cylinder ACQJ20X100-75SB
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 20 | 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 ACQJ12~25 Adjustable Compact Cylinder ACQJ20X100-75SB Is Used
Machining Fixture Stops
Dial in the exact 25-100 mm extend position for varying part sizes on a milling fixture without machining new stop collars.
Packaging Diverter Arms
Adjust the stroke length on a packaging line diverter to handle different carton widths during rapid product changeover.
Lab Test Probe Positioning
Set precise end positions for a testing probe on an electronics assembly rig, allowing quick trial-and-error tuning of the extend point.
Is the Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X100-75SB the Right Cylinder?
When sizing this bore 20 unit, consider the neighbouring capacities at 0.5 MPa: a bore 16 provides 100.5 N push, while a bore 25 yields 245.4 N. If your extend position never varies, a fixed-stroke ACQ cylinder is sufficient. For the ACQJ20X100-75SB, verify your ordering essentials: 20 mm bore, 100 mm full stroke, 75 mm 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
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 ACQJ12~25 Adjustable Compact Cylinder ACQJ20X100-75SB FAQ
It provides 157.1 N push and 117.8 N pull at 0.5 MPa, 219.9 N push at 0.7 MPa, and a maximum push of 32 kgf at 1.0 MPa. The full stroke is 100 mm with a 75 mm adjustment window, giving a usable extend range of 25-100 mm.
The external M8x1.25 threaded stop with lock nut limits only the extend stroke, meaning the force remains identical to a standard ACQ since piston area is unchanged. The cylinder uses fixed elastomer bumpers, not adjustable air cushions, and it will not hold a load on air loss; use an external rod lock for fail-safe holding.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC ACQJ Compact Cylinders
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