Airtac B01-SDAJ Special Cylinder B01-SDAJ25X15-20
The AirTAC Airtac B01-SDAJ Special Cylinder B01-SDAJ25X15-20 is a genuine double-acting COMPACT cylinder (Ø25mm bore) whose extend end-position is set by an external M8×1.25 adjustment screw. You can dial the stroke anywhere from 0 to 15 mm on the machine — no shims, no part change.
- BoreØ25 mm
- Max stroke15 mm
- Adjustable range0–15 mm
- Adjuster threadM8×1.25
- Port sizeM5×0.8
- CushionFixed NBR bumper (both ends)
- 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 B01-SDAJ Special Cylinder B01-SDAJ25X15-20
The B01-SDAJ25X15-20 is a double-acting compact cylinder featuring an external adjustable extend stop. The B01- prefix marks this as an application-dedicated (customer-specified) variant of the base SDAJ25X15-20, meaning it is mechanically identical to the standard model but grouped for specific customer builds. An M8x1.25 adjuster screw lets you dial the extend position down from 15 mm to 0 mm directly on the machine, avoiding part swaps during changeovers. Force remains identical to a standard SDA of this bore, delivering about 245.4 N push at 0.5 MPa.
The short riveted body saves axial mounting depth where round-body or profile cylinders cannot fit. End shock is handled by a fixed NBR bumper that decelerates the stroke end; it is not an adjustable air cushion. Note this SKU lacks a piston magnet, so it cannot support reed or electronic switches. Operating speed ranges from 30-500 mm/s.
Airtac B01-SDAJ Special Cylinder B01-SDAJ25X15-20 Technical Specifications
| Model | Airtac B01-SDAJ Special Cylinder B01-SDAJ25X15-20 |
|---|---|
| Series | SDAJ compact adjustable-stroke cylinder |
| Bore size | Ø25 mm |
| Max stroke | 15 mm |
| Adjustable range | 0 – 15 mm |
| Adjuster thread (R) | M8×1.25 |
| Port size | M5×0.8 |
| Acting type | Double acting |
|---|---|
| Rod end thread | M5×0.8 F / M8×1.25 male (B) |
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 500 mm/s |
| Cushion | Fixed NBR bumper (both ends) |
The adjustment screw shortens the extend stroke by up to 20 mm. Force is unchanged from a standard SDA of the same bore. Specifications follow the official AirTAC SDAJ datasheet.
Theoretical Output Force (Ø25mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 245 N | 206 N |
| 0.7 MPa | 344 N | — |
| Max (@1.0 MPa) | 50 kgf | |
Force matches a standard SDA of the same bore; the adjuster only sets the stop position, not the area. Actual usable force is lower than theoretical due to friction.
Model Code: Airtac B01-SDAJ Special Cylinder B01-SDAJ25X15-20
| SDAJ | Compact double-acting cylinder with adjustable stroke. |
|---|---|
| 25 | Bore size in mm. |
| ×15 | Maximum stroke length in mm. |
| -20 | Adjustable window (10/20/30/40/50/75/100 mm). |
| S / B | S = magnet; B = male-thread rod (both optional). |
Thread: PT standard. Related SDA-family variants: SDA (fixed stroke), SDAD (double rod), SSA/STA (single acting), SDAT (duplex), SDAW (duplex-end).
Where the Airtac B01-SDAJ Special Cylinder B01-SDAJ25X15-20 Is Used
Short-Stroke Clamping
Dial the extend stop from 0 to 15 mm to clamp delicate castings precisely, leveraging the 245.4 N push force without crushing the part.
Rapid Changeover Blocks
Adjust the mechanical stop on-site during product family changeovers to set new end positions instantly without swapping cylinder hardware.
Tight-Footprint Ejectors
Utilize the compact riveted body to fit ejection mechanisms into shallow machine bays where axial depth is severely restricted.
Is the Airtac B01-SDAJ Special Cylinder B01-SDAJ25X15-20 the Right Cylinder?
When sizing this unit, look both ways: stepping down to the SDAJ20 yields 157.1 N push at 0.5 MPa, while stepping up to the SDAJ32 provides 402.1 N push at 0.5 MPa. This 25 mm bore generates 245.4 N push at 0.5 MPa, translating to a safe working load of roughly 147 N (about 60 percent of capacity) and a vertical lift capability near 12.5 kg with a 2:1 safety margin. Choose this model when your fixture requires on-site stroke tuning between 0 and 15 mm.
Confirm your parameters: 25 mm bore, 15 mm maximum stroke, 20 mm adjustment window, M5x0.8 port, female M5x0.8 rod-end thread, and no magnet. Remember that a plain cylinder does not hold its load on air loss or when the valve is centred—the piston drifts. For load holding without live pressure, install an external rod lock or a pilot-operated check valve.
Quick checklist
- ✓ Need on-machine stroke fine-tuning?
- ✓ Target position within 0–15 mm
- ✓ Force at your working pressure
- ✓ Access to reach the R adjuster
- ✓ Magnet (S) for sensors?
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 M8×1.25 adjuster after setting the stroke.
- check Avoid side load on the piston rod.
- check Front/rear covers are riveted — do not dismantle.
- check Installation by qualified personnel per AirTAC docs.
Airtac B01-SDAJ Special Cylinder B01-SDAJ25X15-20 FAQ
This 25 mm bore double-acting cylinder delivers 245.4 N push and 206.2 N pull at 0.5 MPa, 343.6 N push and 288.6 N pull at 0.7 MPa, with a theoretical maximum of 50 kgf at 1.0 MPa. Operating pressure is 0.15-1.0 MPa, proof pressure is 1.5 MPa, and speed is 30-500 mm/s.
The B01- prefix simply marks this as an application-dedicated (customer-specified) variant of the SDAJ25X15-20, with no mechanical changes to the physical specs. The M8x1.25 R screw shortens the extend stroke by up to 20 mm, allowing you to set the extend end anywhere between 0 and 15 mm. This screw sets the mechanical stop position and does not alter the force or lock the piston mid-stroke.
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Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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