Airtac SDA Ultra Thin Cylinder SDA20X35
The AirTAC Airtac SDA Ultra Thin Cylinder SDA20X35 is a genuine double-acting COMPACT (thin) air cylinder with a Ø20mm bore and 35mm stroke, M5×0.8 air ports and a riveted short body that saves mounting depth. Sensor slots around the body accept magnetic switches for position sensing.
- BoreØ20 mm
- Stroke35 mm
- Port sizeM5×0.8
- Acting typeDouble acting
- Rod threadM4×0.7 (F) / M6×1.0 (B)
- 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 SDA Ultra Thin Cylinder SDA20X35
The AirTAC SDA20X35 is a double-acting single-rod compact cylinder engineered to deliver 157.1 N of push force and 131.9 N of pull force at 0.5 MPa. Its riveted assembly keeps the barrel, rear cover, piston and 8 mm rod integrated into a highly abbreviated axial footprint, making it ideal for machinery where a conventional round-body unit would protrude too far. The bore is hard-anodized and uses a two-way piston seal for reliable low-friction motion.
End-of-travel deceleration is handled by a fixed NBR bumper rather than an adjustable air cushion, meaning operators cannot tune the end-stop impact. For high-energy cycles, slowing the approach speed or fitting an external shock absorber is advised. This specific SKU lacks the internal piston magnet, so it cannot host AirTAC reed or electronic switches; position sensing requires the -S variant.
Airtac SDA Ultra Thin Cylinder SDA20X35 Technical Specifications
| Model | Airtac SDA Ultra Thin Cylinder SDA20X35 |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø20 mm |
| Stroke | 35 mm |
| Acting type | Double acting |
| Port size | M5×0.8 |
| Rod end thread | M4×0.7 female / M6×1.0 male (B) |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| 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) |
| Max standard stroke | Up to 90 mm |
Specifications follow the official AirTAC SDA compact-cylinder datasheet. Confirm against the product label before installation. Port thread: PT (standard). Rod: female thread (blank) / male thread (B).
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 | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SDA Ultra Thin Cylinder SDA20X35
| SDA | Compact (thin) double-acting cylinder series. |
|---|---|
| 20 | Bore size in mm. |
| ×35 | Stroke length in mm. |
| S | Built-in magnet for magnetic-switch position sensing (omit = no magnet). |
| B | Male-thread piston rod (omit = female-thread rod). |
Thread: PT standard. Related SDA-family variants: SSA (single-acting push), STA (single-acting pull), SDAD (double rod), SDAJ (adjustable stroke), SDAT (duplex), SDAW (duplex-end).
Where the Airtac SDA Ultra Thin Cylinder SDA20X35 Is Used
PCB Depaneling Router
Actuates the cutting tool guide on an electronic depaneling machine, utilizing the 35 mm stroke and 157.1 N thrust to precisely separate printed circuit boards without stressing components.
Carton Flap Folder
Drives the folding mechanism on a small packaging line, using its short riveted body to fit within tight conveyor side frames while providing 131.9 N of retraction force at 0.5 MPa.
Lab Dispenser Valve
Toggles a pneumatic dispensing valve for chemical reagents, where the 8 mm rod and compact depth allow high-speed cycling up to 500 mm/s without overwhelming the mounting bracket.
Is the Airtac SDA Ultra Thin Cylinder SDA20X35 the Right Cylinder?
When sizing this 20 mm bore unit, consider stepping down to the SDA16 which yields 100.5 N of push at 0.5 MPa for lighter duties, or moving up to the SDA25 which provides 245.4 N if your mechanism demands greater thrust. Based on the 157.1 N output at 0.5 MPa, a safe working load is roughly 94 N (about 60 percent capacity), translating to a vertical lift capability of approximately 8 kg with a 2:1 safety margin. To finalize your order, confirm the 35 mm stroke, the M5x0.8 port, the female M4x0.7 rod-end thread, and the absence of the magnet option. Note that a standard cylinder drifts when air pressure is lost or the valve is centered; the fixed bumper only softens the end stop and does not function as a locking brake, so incorporate a pilot-operated check valve if you need to suspend a load.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Short-body depth vs. a round-body cylinder
- ✓ Port/thread type (PT)
- ✓ Magnet (S) for sensors?
- ✓ Female (blank) or male (B) rod thread
- ✓ Side load — avoid on a compact rod
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the short piston rod.
- check Very long strokes are unsuitable for the compact body.
- check Front/rear covers are riveted — do not dismantle.
- check Installation by qualified personnel per AirTAC docs.
Airtac SDA Ultra Thin Cylinder SDA20X35 FAQ
This double-acting cylinder generates 157.1 N push and 131.9 N pull at 0.5 MPa, increasing to 219.9 N push and 184.7 N pull at 0.7 MPa. The theoretical maximum push force is 32 kgf at 1.0 MPa. It operates on filtered air between 0.15 and 1.0 MPa, with a proof pressure of 1.5 MPa, and supports a speed range of 30-500 mm/s.
No, end-of-travel damping relies solely on a fixed NBR bumper which cannot be field-adjusted, so you should slow the approach or use an external shock absorber for high-energy loads. Additionally, this specific SKU lacks the internal magnet; to use AirTAC reed or electronic switches, you must select the SDA20X35S variant with the built-in magnet.
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Covers non-human-caused product damage.
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