Airtac B01-SDAJ Special Cylinder B01-SDAJ25X50-30SB
The AirTAC Airtac B01-SDAJ Special Cylinder B01-SDAJ25X50-30SB 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 20 to 50 mm on the machine — no shims, no part change.
- BoreØ25 mm
- Max stroke50 mm
- Adjustable range20–50 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-SDAJ25X50-30SB
The B01-SDAJ25X50-30SB is a double-acting, single-rod compact cylinder where the B01- prefix designates an application-dedicated (customer-specified) variant of the base SDAJ25X50-30SB, retaining exact mechanical parity. A short riveted body minimizes axial mounting depth, while an external M8x1.25 adjustment screw dials the extend stop directly on your machine between 20 and 50 mm without swapping shims.
Force remains identical to a standard 25 mm bore SDA, yielding 245.4 N push at 0.5 MPa because the adjuster sets the mechanical stop, not the piston area. This specific build includes a built-in piston magnet for AirTAC reed or electronic switches and a male M8x1.25 piston rod end. End shock is absorbed solely by a fixed NBR bumper, which decelerates the stroke but is not an adjustable air cushion.
Airtac B01-SDAJ Special Cylinder B01-SDAJ25X50-30SB Technical Specifications
| Model | Airtac B01-SDAJ Special Cylinder B01-SDAJ25X50-30SB |
|---|---|
| Series | SDAJ compact adjustable-stroke cylinder |
| Bore size | Ø25 mm |
| Max stroke | 50 mm |
| Adjustable range | 20 – 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 30 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-SDAJ25X50-30SB
| SDAJ | Compact double-acting cylinder with adjustable stroke. |
|---|---|
| 25 | Bore size in mm. |
| ×50 | Maximum stroke length in mm. |
| -30 | 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-SDAJ25X50-30SB Is Used
Tooling Changeover
Dial the extend stop from 20 to 50 mm during fixture swaps to accommodate varying part heights without machining new spacers.
Carton Flap Folding
Fine-tune the male M8x1.25 rod tip position on-site to gently fold varying box profiles while keeping the 245.4 N push force consistent.
Prototype Positioning
Use the magnetic piston feedback to verify exact extend endpoints during trial setups, tweaking the mechanical stop as the process evolves.
Is the Airtac B01-SDAJ Special Cylinder B01-SDAJ25X50-30SB the Right Cylinder?
Size both ways against this 25 mm bore: dropping to a 20 mm bore reduces 0.5 MPa push to 157.1 N, whereas stepping up to a 32 mm bore increases it to 402.1 N. This model provides a safe working load of roughly 147 N (about 60% of the 245.4 N figure) and a vertical lift capacity near 12.5 kg with a 2:1 safety margin.
Choose this configuration when production lines require frequent on-site stroke tuning across the 20-50 mm window. Confirm the 25 mm bore, 50 mm max stroke, 30 mm adjustment, M5x0.8 port, male M8x1.25 rod thread, and the -S magnet. Remember that a plain cylinder drifts on air loss; for load holding without live pressure, install an external rod lock or pilot-operated check valve.
Quick checklist
- ✓ Need on-machine stroke fine-tuning?
- ✓ Target position within 20–50 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-SDAJ25X50-30SB FAQ
The B01- prefix marks this as an application-dedicated variant of the SDAJ25X50-30SB, sharing identical specs. It 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 push of 50 kgf at 1.0 MPa. The operating speed is 30-500 mm/s.
Turning the M8x1.25 adjuster screw shortens the extend stroke by up to 30 mm, allowing usable end positions between 20 and 50 mm while retract remains full. This unit includes a -S magnet for AirTAC reed or electronic switches and a -B male M8x1.25 piston rod thread for external mounting.
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 SDAJ Cylinders
Request a Quote for Airtac B01-SDAJ Special Cylinder B01-SDAJ25X50-30SB
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.