Airtac B01-SDAJ Special Cylinder B01-SDAJ20X75-75B
The AirTAC Airtac B01-SDAJ Special Cylinder B01-SDAJ20X75-75B is a genuine double-acting COMPACT cylinder (Ø20mm bore) whose extend end-position is set by an external M6×1.0 adjustment screw. You can dial the stroke anywhere from 0 to 75 mm on the machine — no shims, no part change.
- BoreØ20 mm
- Max stroke75 mm
- Adjustable range0–75 mm
- Adjuster threadM6×1.0
- 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-SDAJ20X75-75B
The B01-SDAJ20X75-75B is an AirTAC double-acting compact cylinder featuring an external adjustable extend stop. The leading "B01-" prefix marks this as an application-dedicated, customer-specified variant of the base SDAJ20X75-75B; mechanically, every physical spec matches the standard model exactly. Turning the M6x1.0 adjuster screw lets you dial the extend position down from the 75 mm maximum all the way to 0 mm directly on the machine, avoiding part swaps.
The short riveted body saves axial mounting depth where round-body or profile cylinders will not fit. Because the adjuster sets the mechanical stop rather than altering the piston area, force remains identical to a standard 20 mm bore SDA, delivering 157.1 N push at 0.5 MPa. This unit includes a male M6x1.0 piston rod thread and lacks a piston magnet, meaning it cannot host reed or electronic switches without the -S option.
Airtac B01-SDAJ Special Cylinder B01-SDAJ20X75-75B Technical Specifications
| Model | Airtac B01-SDAJ Special Cylinder B01-SDAJ20X75-75B |
|---|---|
| Series | SDAJ compact adjustable-stroke cylinder |
| Bore size | Ø20 mm |
| Max stroke | 75 mm |
| Adjustable range | 0 – 75 mm |
| Adjuster thread (R) | M6×1.0 |
| Port size | M5×0.8 |
| Acting type | Double acting |
|---|---|
| Rod end thread | M4×0.7 F / M6×1.0 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 75 mm. Force is unchanged from a standard SDA of the same bore. Specifications follow the official AirTAC SDAJ datasheet.
Theoretical Output Force (Ø20mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 157 N | 132 N |
| 0.7 MPa | 220 N | — |
| Max (@1.0 MPa) | 32 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-SDAJ20X75-75B
| SDAJ | Compact double-acting cylinder with adjustable stroke. |
|---|---|
| 20 | Bore size in mm. |
| ×75 | Maximum stroke length in mm. |
| -75 | 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-SDAJ20X75-75B Is Used
Prototype Dial-In
Dial the extend stop from 0 to 75 mm during prototype tooling setup to find the exact 94 N safe working contact point without machining new spacers.
Changeover Diverter
Quickly reposition a conveyor diverter flap by turning the M6x1.0 screw, accommodating different package sizes on the same 20 mm bore actuator.
Trial Positioning
Test multiple extend endpoints for a testing probe station, relying on the 157.1 N push at 0.5 MPa to actuate consistently across the 75 mm window.
Is the Airtac B01-SDAJ Special Cylinder B01-SDAJ20X75-75B the Right Cylinder?
Size this 20 mm bore against its neighbours: dropping down to a 16 mm bore yields 100.5 N push at 0.5 MPa, while stepping up to a 25 mm bore provides 245.4 N push at 0.5 MPa. For this cylinder, a safe working load is roughly 94 N (about 60% of the 157.1 N figure), translating to a vertical lift capacity of about 8 kg with a 2:1 safety margin. Choose this unit when your fixture requires on-site stroke tuning between 0 and 75 mm.
Confirm the 20 mm bore, 75 mm maximum stroke, 75 mm adjustment window, and M5x0.8 air port. This SKU uses a male M6x1.0 rod thread (option B) and has no magnet. Remember that a plain cylinder does not hold its load on air loss or valve centring; the fixed NBR bumper only decelerates near the stroke end. 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 0–75 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 M6×1.0 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-SDAJ20X75-75B FAQ
This 20 mm bore double-acting cylinder delivers 157.1 N push and 131.9 N pull at 0.5 MPa, 219.9 N push and 184.7 N pull at 0.7 MPa, with a theoretical maximum of 32 kgf at 1.0 MPa. The piston rod is 8 mm with a male M6x1.0 thread, the air port is M5x0.8, and it operates at 30-500 mm/s.
The B01- prefix indicates an application-dedicated, customer-specified line that is mechanically identical to the standard SDAJ20X75-75B. The M6x1.0 R screw acts as a mechanical stop that shortens the extend stroke by up to 75 mm (usable range 0-75 mm); it does not alter the 157.1 N force or lock mid-stroke, and this SKU lacks a magnet for sensing.
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1-Year Warranty
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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Most inquiries answered within 7-8 hours.
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