Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ80X40-20B
The AirTAC Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ80X40-20B is a genuine double-acting COMPACT cylinder (Ø80mm bore) whose extend end-position is set by an external M20×1.5 adjustment screw. You can dial the stroke anywhere from 20 to 40 mm on the machine — no shims, no part change.
- BoreØ80 mm
- Max stroke40 mm
- Adjustable range20–40 mm
- Adjuster threadM20×1.5
- Port sizePT3/8
- CushionFixed NBR bumper (both ends)
About the Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ80X40-20B
The AirTAC SDAJ80X40-20B is a double-acting compact cylinder featuring an external M20x1.5 adjustment screw that dials the extend stop from 20 to 40 mm directly on your machine. Because the adjuster sets the mechanical stop rather than altering the piston area, output force remains identical to a standard SDA of this bore, delivering 2513.3 N of push at 0.5 MPa. This SKU uses a male M22x1.5 piston rod thread and lacks a piston magnet, meaning it cannot host reed or electronic switches without upgrading to the -S variant.
Its short riveted body saves valuable axial mounting depth where round-body or profile cylinders simply will not fit. The end-of-stroke deceleration is handled by a fixed NBR bumper, which absorbs shock but is not an adjustable air cushion. Operating pressure spans 0.15 to 1.0 MPa, and the unit travels at speeds between 30 and 500 mm/s.
Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ80X40-20B Technical Specifications
| Model | Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ80X40-20B |
|---|---|
| Series | SDAJ compact adjustable-stroke cylinder |
| Bore size | Ø80 mm |
| Max stroke | 40 mm |
| Adjustable range | 20 – 40 mm |
| Adjuster thread (R) | M20×1.5 |
| Port size | PT3/8 |
| Acting type | Double acting |
|---|---|
| Rod end thread | M14×1.5 F / M22×1.5 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 (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 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 SDAJ80~100 Adjustable Super Slim Cylinder SDAJ80X40-20B
| SDAJ | Compact double-acting cylinder with adjustable stroke. |
|---|---|
| 80 | Bore size in mm. |
| ×40 | 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 SDAJ80~100 Adjustable Super Slim Cylinder SDAJ80X40-20B Is Used
Press Fit Calibration
Dial in precise 20 to 40 mm insertion depths for bearing presses on the factory floor, leveraging the 2513.3 N push force to seat components accurately during setup changes.
Heavy Vertical Lift Stops
Lift payloads up to 128.1 kg with a 2:1 margin and fine-tune the extend endpoint to avoid crashing into upper tooling, relying on the male M22x1.5 rod for robust mounting.
Changeover Positioning
Adjust the extend stop on-site for different product sizes without changing parts, using the compact riveted body to fit into tight changeover stations where axial length is restricted.
Is the Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ80X40-20B the Right Cylinder?
When sizing this 80 mm bore, evaluate both neighbours: stepping down to the SDAJ63 yields 1558.6 N of push at 0.5 MPa, while moving up to the SDAJ100 provides 3927 N. This SDAJ80X40-20B sits comfortably in the middle at 2513.3 N, offering a safe working load of roughly 1508 N (about 60% of the 0.5 MPa rating) and a vertical lift capacity of approximately 128.1 kg with a 2:1 safety margin. Choose this specific configuration when your fixture requires on-site extend tuning between 20 and 40 mm without swapping shims or parts.
Confirm your parameters match this exact SKU: 80 mm bore, 40 mm maximum stroke, 20 mm adjuster window, PT3/8 air port, male M22x1.5 rod thread, and no magnet. Remember that a plain SDAJ does not hold position or load when air is lost or the directional valve is centred; the fixed bumper only decelerates near the end of travel. For load holding without live pressure, you must integrate an external rod lock or a pilot-operated check valve.
Quick checklist
- ✓ Need on-machine stroke fine-tuning?
- ✓ Target position within 20–40 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 M20×1.5 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 SDAJ80~100 Adjustable Super Slim Cylinder SDAJ80X40-20B FAQ
This double-acting cylinder delivers 2513.3 N push and 2267.8 N pull at 0.5 MPa, and 3518.6 N push at 0.7 MPa. The theoretical maximum push is 513 kgf at 1.0 MPa. It operates between 0.15 and 1.0 MPa, with a proof pressure of 1.5 MPa, and supports speeds of 30-500 mm/s.
Turning the external M20x1.5 screw shortens the extend stroke by up to 20 mm, giving a usable extend range of 20 to 40 mm without altering the output force. This specific SKU lacks a piston magnet, so it cannot accept reed or electronic switches; you would need the -S variant for position sensing.
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