Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X45-10B
The AirTAC Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X45-10B is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø20mm bore and 45mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ20 mm
- Full stroke45 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 ACQJ20X45-10B
The AirTAC ACQJ20X45-10B is a double-acting JIS compact cylinder featuring an external male-threaded stop with a lock nut that limits the extend end position. You can fine-tune the usable extend range from 35 mm up to the full 45 mm directly on your machinery without swapping components. The retract stroke remains completely unaffected by this adjustment. An M8x1.25 male piston rod end (-B) couples directly to your load.
Because the piston area stays constant, output force is identical to a standard ACQ bore 20. You get 157.1 N push and 117.8 N pull at 0.5 MPa, rising to 219.9 N push at 0.7 MPa. The body incorporates fixed elastomer bumpers for end-of-stroke deceleration and includes magnetic-switch grooves, though this specific configuration ships without a magnet. Operating pressure spans 0.15 to 1.0 MPa.
Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X45-10B Technical Specifications
| Model | Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X45-10B |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø20 mm |
| Full stroke | 45 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 ACQJ20X45-10B
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 20 | Bore size in mm. |
| ×45 | 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 ACQJ20X45-10B Is Used
CNC Fixture Clamping
Dial in the exact clamping reach on machining centers when raw part tolerances vary, using the external stop to set a precise 35 to 45 mm extension.
Carton Sealing Tippers
Adjust the push distance on packaging lines during product format changeovers without disassembling the cylinder or altering the retract stroke.
Lab Test Positioning
Establish trial end positions for laboratory testing rigs where the target contact point must be tuned on the fly within a 10 mm window.
Is the Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X45-10B the Right Cylinder?
When sizing this unit, consider the neighbouring bores: a 16 mm bore yields 100.5 N push at 0.5 MPa, while a 25 mm bore provides 245.4 N push at 0.5 MPa. Select the ACQJ20X45-10B when your application requires exactly 157.1 N of push force alongside a variable 35 to 45 mm extend stroke. If your end position never varies, a fixed-stroke ACQ cylinder suffices. Confirm your ordering essentials: 20 mm bore, 45 mm full stroke, 10 mm adjuster window, male M8x1.25 rod thread, and no magnet.
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 ACQJ20X45-10B FAQ
The usable extend range is 35 to 45 mm. Force output is identical to a standard ACQ: 157.1 N push and 117.8 N pull at 0.5 MPa, 219.9 N push at 0.7 MPa, with a maximum push of 32 kgf at 1.0 MPa.
An external M8x1.25 threaded adjuster with a lock nut limits the extend stroke length without changing the piston area, keeping force unchanged. The retract stroke is unaffected. The cylinder uses fixed elastomer bumpers for deceleration and has sensor grooves, though this model ships without a magnet.
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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