Airtac B01-SDAJ Special Cylinder B01-SDAJ50X15-20
The AirTAC Airtac B01-SDAJ Special Cylinder B01-SDAJ50X15-20 is a genuine double-acting COMPACT cylinder (Ø50mm bore) whose extend end-position is set by an external M16×1.5 adjustment screw. You can dial the stroke anywhere from 0 to 15 mm on the machine — no shims, no part change.
- BoreØ50 mm
- Max stroke15 mm
- Adjustable range0–15 mm
- Adjuster threadM16×1.5
- Port sizePT1/4
- 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-SDAJ50X15-20
The B01-SDAJ50X15-20 is a double-acting compact cylinder featuring an external adjustable extend stop. The leading "B01-" prefix marks this as AirTAC's application-dedicated (customer-specified) line of the base SDAJ50X15-20, meaning it is mechanically identical to the standard unit. An M16x1.5 adjuster screw lets you dial the extend position down from 15 mm to 0 mm directly on the machine without changing parts. Because the screw sets the mechanical stop rather than altering the piston area, output force remains equal to a standard SDA of this bore, delivering about 981.7 N push at 0.5 MPa.
Its short riveted body saves valuable axial mounting depth where a longer cylinder will not fit. End-of-travel deceleration is handled by a fixed NBR bumper at each end, which absorbs shock but is not an adjustable air cushion. Note that this specific SKU lacks a piston magnet, so it cannot host reed or electronic switches; you would need the -S variant for position sensing.
Airtac B01-SDAJ Special Cylinder B01-SDAJ50X15-20 Technical Specifications
| Model | Airtac B01-SDAJ Special Cylinder B01-SDAJ50X15-20 |
|---|---|
| Series | SDAJ compact adjustable-stroke cylinder |
| Bore size | Ø50 mm |
| Max stroke | 15 mm |
| Adjustable range | 0 – 15 mm |
| Adjuster thread (R) | M16×1.5 |
| Port size | PT1/4 |
| Acting type | Double acting |
|---|---|
| Rod end thread | M10×1.5 F / M18×1.5 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 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-SDAJ50X15-20
| SDAJ | Compact double-acting cylinder with adjustable stroke. |
|---|---|
| 50 | 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-SDAJ50X15-20 Is Used
Short-Stroke Clamping
Dial the 0-15 mm extend stop to clamp delicate castings precisely, leveraging the 981.7 N push at 0.5 MPa without over-traveling and damaging the part.
Rapid Changeover Stations
Rotate the M16x1.5 adjuster screw on-site during product family changeovers to set new end positions quickly, avoiding the downtime of swapping out entire cylinders.
Vertical Lift Dampening
Lift approximately 50 kg with a 2:1 safety margin, relying on the fixed NBR bumper to absorb the end shock at the top of the 15 mm travel before reversing.
Is the Airtac B01-SDAJ Special Cylinder B01-SDAJ50X15-20 the Right Cylinder?
When sizing this unit, look both ways: stepping down to an SDAJ40 yields 628.3 N push at 0.5 MPa, whereas stepping up to an SDAJ63 provides 1558.6 N. This 50 mm bore provides a theoretical maximum push of 200 kgf at 1.0 MPa, translating to a safe working load of roughly 589 N (about 60% of the 0.5 MPa figure) or a 50 kg vertical lift with a 2:1 margin. Choose this model if your fixture requires on-site stroke tuning between 0 and 15 mm via the PT1/4 port.
Confirm your bore, 15 mm maximum stroke, 20 mm adjust window, female M10x1.5 rod-end thread, and the absence of a magnet. Remember that a plain cylinder does not hold its load on air loss or when the valve is centred—the piston drifts and the fixed bumper only decelerates near the stroke end. For a held load 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 M16×1.5 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-SDAJ50X15-20 FAQ
This double-acting cylinder delivers 981.7 N push and 824.7 N pull at 0.5 MPa, and 1374.4 N push at 0.7 MPa. The theoretical maximum push is 200 kgf at 1.0 MPa. It operates between 0.15 and 1.0 MPa, with a proof pressure of 1.5 MPa, and runs at speeds of 30-500 mm/s.
The B01- prefix denotes AirTAC's application-dedicated (customer-specified) variant of the base SDAJ50X15-20, sharing identical physical specs. The M16x1.5 adjuster screw shortens the extend stop by up to 20 mm, allowing you to set the extend position anywhere between 0 and 15 mm. This screw is a mechanical stop, not a mid-stroke lock, and does not alter the output force.
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