Airtac B01-SDAJ Special Cylinder B01-SDAJ25X50-50S
The AirTAC Airtac B01-SDAJ Special Cylinder B01-SDAJ25X50-50S 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 50 mm on the machine — no shims, no part change.
- BoreØ25 mm
- Max stroke50 mm
- Adjustable range0–50 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-SDAJ25X50-50S
The B01-SDAJ25X50-50S is a double-acting compact cylinder where the B01- prefix denotes AirTAC's application-dedicated (customer-specified) variant, mechanically identical to the standard SDAJ25X50-50S. Its short riveted body saves axial mounting depth where a round-body or profile cylinder will not fit. An external R (M8x1.25) adjuster screw lets you dial the extend stop from 0 to 50 mm directly on the machine without shims.
Force remains unchanged from a standard SDA of this bore, delivering about 245.4 N push at 0.5 MPa. The fixed NBR bumper decelerates the stroke end but is not an adjustable air cushion. Equipped with a built-in piston magnet, this unit supports AirTAC reed or electronic switches for position sensing.
Airtac B01-SDAJ Special Cylinder B01-SDAJ25X50-50S Technical Specifications
| Model | Airtac B01-SDAJ Special Cylinder B01-SDAJ25X50-50S |
|---|---|
| Series | SDAJ compact adjustable-stroke cylinder |
| Bore size | Ø25 mm |
| Max stroke | 50 mm |
| Adjustable range | 0 – 50 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 50 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-SDAJ25X50-50S
| SDAJ | Compact double-acting cylinder with adjustable stroke. |
|---|---|
| 25 | Bore size in mm. |
| ×50 | Maximum stroke length in mm. |
| -50 | 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-SDAJ25X50-50S Is Used
Trial Positioning Jigs
Dial the extend stop from 0 to 50 mm during prototype runs to find the exact 147 N safe working contact point without machining new spacers.
Changeover Flap Folders
Re-set the extend endpoint on-site for different carton depths, relying on the 245.4 N push at 0.5 MPa to fold heavy board cleanly.
Vertical Lift Stops
Limit the downward travel to a precise height for a 12.5 kg vertical lift with a 2:1 margin, preventing over-travel in tight vertical spaces.
Is the Airtac B01-SDAJ Special Cylinder B01-SDAJ25X50-50S the Right Cylinder?
Size this 25 mm bore against its neighbours: step down to SDAJ20 for 157.1 N push at 0.5 MPa, or up to SDAJ32 for 402.1 N push at 0.5 MPa. This model yields a safe working load of roughly 147 N (about 60% of the 245.4 N figure) and a vertical lift of approximately 12.5 kg with a 2:1 margin. Choose it when setups demand frequent on-site stroke tuning.
Confirm the 25 mm bore, 50 mm maximum stroke, 50 mm adjust window, M5x0.8 port, -S magnet, and female M5x0.8 rod-end thread. Remember that a plain cylinder does not hold its load on air loss or valve centring; the piston drifts and the bumper only decelerates near the end. For a held load without live pressure, specify an external rod lock or a pilot-operated check valve.
Quick checklist
- ✓ Need on-machine stroke fine-tuning?
- ✓ Target position within 0–50 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-SDAJ25X50-50S FAQ
This 25 mm bore double-acting cylinder provides 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. It operates at 30-500 mm/s and accepts 0.15-1.0 MPa air pressure.
The B01- prefix marks this as an application-dedicated (customer-specified) variant of the SDAJ25X50-50S, sharing the exact same physical specs. The -S suffix indicates a built-in piston magnet for AirTAC reed or electronic switches. The M8x1.25 adjuster screw sets the mechanical stop between 0 and 50 mm but does not function as a mid-stroke lock.
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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.
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