Airtac B01-SDAJ Special Cylinder B01-SDAJ25X75-30B
The AirTAC Airtac B01-SDAJ Special Cylinder B01-SDAJ25X75-30B 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 45 to 75 mm on the machine — no shims, no part change.
- BoreØ25 mm
- Max stroke75 mm
- Adjustable range45–75 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-SDAJ25X75-30B
The AirTAC B01-SDAJ25X75-30B is a compact double-acting single-rod cylinder built for application-dedicated setups. The "B01-" prefix marks it as AirTAC's customer-specified variant of the base SDAJ25X75-30B, meaning it is mechanically identical to the standard model. It features a short riveted body that saves axial mounting depth where larger profile or round-body units will not fit. An external M8x1.25 adjuster screw lets you dial the extend stop on-site between 45 and 75 mm without shims or part changes.
The adjuster sets the mechanical stop position, not the piston area, so force remains equal to a standard SDA of this bore: about 245.4 N push at 0.5 MPa. This SKU includes the -B option for a male M8x1.25 piston rod end and has no piston magnet. End shock is handled by a fixed NBR bumper that decelerates the stroke, which is not an adjustable air cushion. Operating speed ranges from 30 to 500 mm/s.
Airtac B01-SDAJ Special Cylinder B01-SDAJ25X75-30B Technical Specifications
| Model | Airtac B01-SDAJ Special Cylinder B01-SDAJ25X75-30B |
|---|---|
| Series | SDAJ compact adjustable-stroke cylinder |
| Bore size | Ø25 mm |
| Max stroke | 75 mm |
| Adjustable range | 45 – 75 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-SDAJ25X75-30B
| SDAJ | Compact double-acting cylinder with adjustable stroke. |
|---|---|
| 25 | Bore size in mm. |
| ×75 | 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-SDAJ25X75-30B Is Used
Prototype Forming Press
Dial the M8x1.25 stop between 45 and 75 mm to test material depths on the fly, leveraging 245.4 N of push at 0.5 MPa for light stamping.
Changeover Divert Gate
Quickly reposition the extend endpoint by up to 30 mm during product family changeovers without swapping cylinders or adding shims.
Adjustable Clamping Fixture
Secure varying part heights on a single fixture by turning the external screw, using the male M8x1.25 rod to mount custom tooling.
Is the Airtac B01-SDAJ Special Cylinder B01-SDAJ25X75-30B the Right Cylinder?
Size this 25 mm bore against its neighbours: stepping down to SDAJ20 yields 157.1 N push at 0.5 MPa, while stepping up to SDAJ32 provides 402.1 N push at 0.5 MPa. With 245.4 N available at 0.5 MPa, the safe working load is roughly 147 N (about 60 percent of capacity), translating to a vertical lift of approximately 12.5 kg with a 2:1 safety margin. Choose this unit when you need on-site stroke tuning between 45 and 75 mm via the M8x1.25 screw. Confirm your requirements for the 25 mm bore, 75 mm max stroke, 30 mm window, M5x0.8 port, and male M8x1.25 rod thread.
Remember that a plain cylinder does not hold its load when air is lost or the valve is centred; the piston drifts and the fixed NBR bumper only decelerates near the end of travel. For load holding without live pressure, install an external rod lock or a pilot-operated check valve. This specific SKU lacks a magnet, so it cannot accept reed or electronic switches; select the -S variant if sensing is required.
Quick checklist
- ✓ Need on-machine stroke fine-tuning?
- ✓ Target position within 45–75 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-SDAJ25X75-30B FAQ
This 25 mm bore 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 max of 50 kgf at 1.0 MPa. The port is M5x0.8, and it includes a male M8x1.25 rod thread. The B01- prefix simply denotes an application-dedicated variant with identical mechanics to the SDAJ25X75-30B.
Turning the external M8x1.25 screw shortens the extend stroke by up to 30 mm, allowing the rod to stop anywhere between 45 and 75 mm. The screw acts only as a mechanical stop and does not alter the 245.4 N force. It does not lock the load; if air is lost, the piston drifts. For load holding, use an external rod lock or pilot-operated check valve.
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-SDAJ25X75-30B
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.