Airtac B01-SDAJ Special Cylinder B01-SDAJ50X20-20B
The AirTAC Airtac B01-SDAJ Special Cylinder B01-SDAJ50X20-20B 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 20 mm on the machine — no shims, no part change.
- BoreØ50 mm
- Max stroke20 mm
- Adjustable range0–20 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-SDAJ50X20-20B
The B01-SDAJ50X20-20B is a compact double-acting single-rod cylinder built for tight axial footprints. The leading "B01-" prefix marks this as an AirTAC application-dedicated (customer-specified) variant of the base SDAJ50X20-20B, meaning it is mechanically identical to the standard model. It features a 50mm bore and a 20mm stroke, delivering 981.7N of push force at 0.5MPa.
An external R (M16x1.5) adjuster screw lets you dial the extend stop down from 20mm to 0mm directly on the machine. This on-site tuning requires no shims or part changes. The short riveted body saves mounting depth, and a fixed NBR bumper decelerates the stroke end. This SKU includes a male M18x1.5 piston rod (-B) and lacks a piston magnet, so it cannot host magnetic switches.
Airtac B01-SDAJ Special Cylinder B01-SDAJ50X20-20B Technical Specifications
| Model | Airtac B01-SDAJ Special Cylinder B01-SDAJ50X20-20B |
|---|---|
| Series | SDAJ compact adjustable-stroke cylinder |
| Bore size | Ø50 mm |
| Max stroke | 20 mm |
| Adjustable range | 0 – 20 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-SDAJ50X20-20B
| SDAJ | Compact double-acting cylinder with adjustable stroke. |
|---|---|
| 50 | Bore size in mm. |
| ×20 | 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-SDAJ50X20-20B Is Used
Short-Stroke Clamping
Dial the 0-20mm extend stop to clamp parts of varying widths on a machining fixture without swapping actuator hardware.
Changeover Positioning
Fine-tune the male M18x1.5 rod extension during product changeover on a packaging line to establish new end stops rapidly.
Compact Ejection
Fit the short riveted body into a dense assembly cell to eject 50kg components using the 981.7N push force at 0.5MPa.
Is the Airtac B01-SDAJ Special Cylinder B01-SDAJ50X20-20B the Right Cylinder?
When sizing this unit, evaluate both neighbouring bores: the SDAJ40 provides 628.3N push at 0.5MPa, while the SDAJ63 offers 1558.6N. This 50mm bore generates 981.7N at 0.5MPa, yielding a safe working load around 589N (60% capacity) and a vertical lift capacity near 50kg with a 2:1 safety margin. Choose this specific SKU when your fixture requires a male M18x1.5 rod thread and on-site extend tuning between 0 and 20mm.
Confirm the PT1/4 port, 30-500mm/s speed range, and 0.15-1.0MPa operating pressure suit your air supply. Note that a plain cylinder drifts when air is lost or the valve centres; the fixed bumper only decelerates the end of travel and is not a lock. 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 0–20 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-SDAJ50X20-20B FAQ
This 50mm bore cylinder delivers 981.7N push and 824.7N pull at 0.5MPa, 1374.4N push and 1154.5N pull at 0.7MPa, with a theoretical maximum of 200kgf at 1.0MPa. The rod is Ø20mm, the port is PT1/4, and the rod end features a male M18x1.5 thread.
The B01- prefix indicates an application-dedicated (customer-specified) build that is mechanically identical to the standard SDAJ50X20-20B. The R (M16x1.5) screw shortens the extend stop from 20mm down to 0mm on-site; it sets the mechanical stop position and does not alter the 981.7N force. This SKU lacks a magnet, but adding an -S variant enables reed or electronic switches.
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-SDAJ50X20-20B
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.