Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ80X40-20SB
The AirTAC Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ80X40-20SB 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 SDAJ80X40-20SB
The AirTAC SDAJ80X40-20SB is a compact double-acting single-rod cylinder featuring an external adjustable extend stop. By turning the R (M20x1.5) screw, you can shorten the forward stroke on-site across a 20 to 40 mm window, eliminating the need for shims or part swaps during changeovers. Because the adjuster sets the mechanical stop rather than 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 80 mm bore unit saves valuable axial mounting depth where a larger profile cylinder will not fit, utilizing a short riveted body design. It includes a built-in piston magnet for AirTAC reed or electronic switches and a male-thread M22x1.5 piston rod. End-of-travel deceleration is handled by a fixed NBR bumper, which absorbs shock but is not an adjustable air cushion or a mid-stroke lock.
Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ80X40-20SB Technical Specifications
| Model | Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ80X40-20SB |
|---|---|
| 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 SDAJ80X40-20SB
| 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 SDAJ80X40-20SB Is Used
Press Fit Dial-In
Fine-tune the 20-40 mm extend stop on heavy press fits, leveraging the 2513.3 N push to seat bearings precisely without over-traveling.
Product Diverters
Adjust the male M22x1.5 rod reach on the fly for varying package widths, using the fixed NBR bumper to absorb the stop impact.
Vertical Lift Stops
Set precise lower limits for lifting tasks, safely handling a 128.1 kg payload with a 2:1 margin while relying on external checks for holding.
Is the Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ80X40-20SB the Right Cylinder?
When sizing this model, compare its 2513.3 N push at 0.5 MPa both ways: stepping down to an SDAJ63 yields 1558.6 N, while stepping up to an SDAJ100 provides 3927 N. This 80 mm bore is ideal for operators who require on-site stroke tuning to dial in trial positioning without swapping components. It features a PT3/8 port, a 20 mm adjustment window, and the -S magnet paired with the -B male M22x1.5 rod end.
Remember that a plain cylinder does not hold its load if air pressure drops or the valve is centred; the piston will drift. For load holding without live pressure, integrate an external rod lock or a pilot-operated check valve alongside the fixed bumper. Based on the 0.5 MPa push rating, the safe working load is approximately 1508 N (about 60 percent of capacity), allowing a vertical lift of roughly 128.1 kg with a 2:1 safety margin.
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 SDAJ80X40-20SB FAQ
At 0.5 MPa, push force is 2513.3 N and pull is 2267.8 N. At 0.7 MPa, push is 3518.6 N and pull is 3175 N. The theoretical maximum push at 1.0 MPa is 513 kgf.
The M20x1.5 R screw shortens the extend stop from the 40 mm maximum down to 20 mm without changing the force. The included -S magnet works with AirTAC reed or electronic solid-state switches for position sensing.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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Most inquiries answered within 7-8 hours.
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