SDAW32X20X10SB New Airtac Ultra-thin Air Pneumatic Cylinder
Product Overview
The AirTAC SDAW32X20X10SB is a duplex-end compact cylinder — a multi-position pneumatic actuator that combines two strokes in one compact unit. This innovative design adds a third position capability, allowing the cylinder to stop and hold at three discrete positions along its travel: the first stroke end, the second stroke end, and the middle position where both strokes cancel.
With a 32mm bore providing useful thrust output for mid-range automation tasks, this configuration features a primary stroke of 20mm and secondary stroke of 10mm, making it ideal for applications requiring both coarse and fine positional movements from the same actuator body. The built-in magnet enables external position sensing without mechanical limit switches.
Key Specifications
| Parameter |
Value |
| Cylinder Type |
Duplex-end compact (ultra-thin, multi-position) |
| Bore |
32 mm |
| Stroke 1 |
20 mm |
| Stroke 2 |
10 mm |
| Position Count |
3 (stroke 1 end / middle / stroke 2 end) |
| Acting Type |
Double acting |
| Magnet |
Built-in (with magnet) |
| Rod Thread |
Male (inner tooth) |
| Port Thread |
PT |
| Operating Pressure |
0.1 - 0.9 MPa (double acting) |
| Piston Speed |
30 - 500 mm/s |
| Operating Temperature |
−10°C to +80°C |
| Body Material |
Aluminium alloy (hard anodized) |
Construction Details
Built around AirTAC's established SDA compact cylinder architecture, the SDAW32X20X10SB features:
- Body and Covers: Aluminium alloy cylinder tube with hard-anodized bore surface for exceptional wear resistance
- Assembly: Riveted structure for low-profile design without projecting screws
- Piston Seal: Heterogeneous two-way seal structure with integrated oil reservoir for self-lubrication
- Magnet: Built-in piston magnet for contactless position detection
- Port Thread: PT (parallel taper) thread standard for Asian market configuration
Three-Position Operation
The SDAW duplex-end cylinder achieves three positions through independent pressure control:
- Position 1 (20mm extended): Pressurize primary chamber, exhaust secondary
- Position 2 (Middle): Pressurize both chambers simultaneously for stable intermediate position
- Position 3 (Retracted): Pressurize secondary chamber, exhaust primary
This control scheme requires a 5/3-way directional valve with closed-centre position for mid-position hold.
Frequently Asked Questions
Q1: Can the SDAW32X20X10SB achieve a middle position that stays stable even without continuous air pressure?
No. The mid-position is maintained by balanced air pressure in both chambers simultaneously. If air supply is lost, the cylinder will not remain fixed. For applications requiring held mid-position without continuous air, a mechanical locking cylinder or cylinder with internal brake is needed.
Q2: What auto switch types are compatible with the SDAW32X20X10SB's built-in magnet?
AirTAC's CS1 series and equivalent magnetic reed switches, as well as solid-state Hall-effect switches with compatible bracket and sensing range. Confirm the selected switch's operating range covers the magnet field strength and matches the 32mm bore groove dimensions.
Q3: The cylinder is moving too slowly. Can the piston speed be increased by raising the supply pressure above 0.9 MPa?
Operating above 0.9 MPa risks seal damage and exceeds design limits. Speed is better controlled through air flow rate using flow control valves (meter-out type) at each port. Adjust exhaust flow to set desired piston speed within the 30-500 mm/s operating range.
Q4: The middle position is not repeatable — the cylinder stops at slightly different points each cycle. What causes this?
Mid-position repeatability depends on balanced pressure in both chambers. Variations in supply pressure, exhaust back pressure, or load condition between cycles cause balance point shifts. Ensure stable pressure regulation and simultaneous port pressurization without timing offset. Adding small buffer tanks to each chamber can dampen pressure fluctuations.
Q5: What lubrication does the SDAW32X20X10SB require?
The heterogeneous two-way piston seal has an integral oil reservoir providing self-lubrication for normal operation with clean, dry or minimally lubricated compressed air. No external lubrication required for standard industrial compressed air. If using a lubricator, use light turbine oil at very low concentration — excessive lubrication accelerates seal deterioration. Do not use silicone-based lubricants.
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