This model is discontinued
AirTAC has phased out the MSAL series. You can still order this code here: we ship the direct replacement MSBL20X50CALB, with the same bore, stroke, output force, port and mounting, so it fits the same application. The replacement upgrades to a riveted rolling-packed body and CMSG / DMSG / EMSG sensors (the MAL used CS1-M / DS1-M).
Airtac MSAL Front Single Acting Compact Cylinder MSAL20X50CALB
The AirTAC Airtac MSAL Front Single Acting Compact Cylinder MSAL20X50CALB is a single acting, push (spring return) aluminum-barrel mini cylinder with a Ø20mm bore and 50mm stroke, G1/8 ports and a fixed rubber bumper. Air drives the push (work) stroke and the spring returns the rod — it rests retracted on air loss. This model is discontinued; the direct replacement is the AIRTACMSBLFRONTSINGLEACTINGCOMPACTCYLINDERMSBL20X50CALB.
- BoreØ20 mm
- Stroke50 mm
- Port sizeG1/8
- Acting typeSingle acting, push (spring return)
- Rod threadM8×1.25
- StatusDiscontinued → AIRTACMSBLFRONTSINGLEACTINGCOMPACTCYLINDERMSBL20X50CALB
- 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 MSAL Front Single Acting Compact Cylinder MSAL20X50CALB
The AirTAC MSAL20X50CALB is a discontinued 20mm bore, 50mm stroke single-acting push cylinder with a spring return. Air extends the rod for the work stroke, while an internal spring retracts it, providing a fail-safe retracted home on air loss. It delivers 106.8 N of usable push force at 0.5 MPa. The direct replacement is the MSBL20X50CALB, matching the bore, stroke, G1/8 port, and LB foot mount.
This SKU features a CA clevis back cover that swings on a pin to accommodate arcing loads, and an LB foot mounting bracket. It has no -S magnet, meaning it cannot accept a position sensor. As an MSAL, it uses older threaded covers and fixed rubber bumpers; upgrading to the MSBL brings a riveted rolling-packed body. Minimum working pressure is 0.2 MPa.
Airtac MSAL Front Single Acting Compact Cylinder MSAL20X50CALB Technical Specifications
| Model | Airtac MSAL Front Single Acting Compact Cylinder MSAL20X50CALB |
|---|---|
| Series | MAL single-acting mini cylinder (discontinued) |
| Replacement | AIRTACMSBLFRONTSINGLEACTINGCOMPACTCYLINDERMSBL20X50CALB |
| Bore size | Ø20 mm |
| Stroke | 50 mm |
| Acting type | Single acting, push (spring return) |
| Port size | G1/8 |
| Rod thread | M8×1.25 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.2 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 50 – 800 mm/s |
| Cushion | Fixed rubber bumper |
| Max standard stroke | Up to 150 mm |
Single-acting minimum working pressure is 0.2 MPa (the air must overcome the return spring). Do not apply an external load during the spring return stroke. The AIRTACMSBLFRONTSINGLEACTINGCOMPACTCYLINDERMSBL20X50CALB carries the same single-acting ratings.
Usable Push Force (Ø20mm)
| Pressure | Push force (net of spring) |
|---|---|
| 0.5 MPa | 106.8 N |
| 0.7 MPa | 169.6 N |
Usable single-acting force after the return spring — lower than a same-bore double-acting cylinder. Size with a margin.
Model Code: Airtac MSAL Front Single Acting Compact Cylinder MSAL20X50CALB
| MSAL | Single acting, push (spring return) aluminum-barrel mini cylinder (discontinued). |
|---|---|
| 20 | Bore size in mm (20/25/32/40). |
| ×50 | Stroke length in mm. |
| S | Optional magnet for a CS1-M / DS1-M sensor (MSBL uses CMSG/DMSG/EMSG). |
| CA / U / CM | Back cover: CA pivot, U flat-end or CM round-end. |
Replacement: MSAL → MSBL. Related: MTAL/MTBL (single-acting pull), MAL/MBL (double acting).
Where the Airtac MSAL Front Single Acting Compact Cylinder MSAL20X50CALB Is Used
PCB Router Clamp
Uses 106.8 N at 0.5 MPa to hold a printed circuit board panel during router depaneling. The CA clevis allows the arm to swing slightly, while the spring return releases the board safely when air is cut.
Stamping Ejector
Ejects small brass stampings from a die with 169.6 N at 0.7 MPa. The fixed rubber bumper absorbs the impact, and the spring-return fail-safe ensures the ejector retracts out of the die on air loss.
Packaging Flap Guide
Pushes a cardboard carton flap into position for sealing at 0.4 MPa (75.4 N). The LB foot mount holds the cylinder rigid while the CA back cover pivots to follow the flap angle.
Replacing the Airtac MSAL Front Single Acting Compact Cylinder MSAL20X50CALB with AIRTACMSBLFRONTSINGLEACTINGCOMPACTCYLINDERMSBL20X50CALB
To replace this MSAL20X50CALB, order the direct replacement MSBL20X50CALB. Confirm the 20mm bore, 50mm stroke, PT G1/8 port, CA clevis back cover, and LB foot mount are correct for your jig. Because this SKU lacks the -S magnet, it cannot take a sensor; if you need position detection, step up to an MSBL20X50SCALB which uses the modern CMSG, DMSG, or EMSG switches instead of the older CS1-M or DS1-M. Remember the 0.2 MPa minimum pressure required to overcome the return spring, and apply no external load on the spring return stroke. For a 50mm stroke on a small 20mm bore, keep side-load alignment tight to avoid rod bending.
If sizing up or down, the next size down is the 20mm bore's smaller alternatives, but here 20mm is the smallest standard. The next size up is a 25mm bore (like MSBL25X50CALB), which raises the 0.5 MPa push force to 176.4 N if you need more clamping power.
Upgrade checklist
- ✓ Order the AIRTACMSBLFRONTSINGLEACTINGCOMPACTCYLINDERMSBL20X50CALB (same bore/stroke/force)
- ✓ Same push direction and retracted fail-safe home
- ✓ Min 0.2 MPa; no external load on the spring return
- ✓ Sensor: swap CS1-M/DS1-M → CMSG/DMSG/EMSG
- ✓ Confirm back cover (CA / U) and thread (PT/NPT/G)
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.2 – 1.0 MPa (min 0.2 to overcome the spring).
- check Apply no external load on the spring return stroke.
- check Avoid side load on the piston rod.
- check Front/rear covers are threaded — not for field disassembly.
- check For new builds, specify the AIRTACMSBLFRONTSINGLEACTINGCOMPACTCYLINDERMSBL20X50CALB instead of this discontinued model.
Airtac MSAL Front Single Acting Compact Cylinder MSAL20X50CALB FAQ
Yes, the MSAL20X50CALB is discontinued. The direct replacement is the MSBL20X50CALB, which matches the 20mm bore, 50mm stroke, CA clevis, LB mount, and G1/8 port. The MSBL upgrades the body to a riveted rolling-packed design, but force ratings remain identical.
The usable push force (net of the return spring) is 12.6 N at 0.2 MPa, 44.0 N at 0.3 MPa, 75.4 N at 0.4 MPa, 106.8 N at 0.5 MPa, 138.2 N at 0.6 MPa, and 169.6 N at 0.7 MPa. The minimum working pressure is 0.2 MPa because the air must overcome the internal return spring to extend the rod.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The AIRTACMSBLFRONTSINGLEACTINGCOMPACTCYLINDERMSBL20X50CALB replaces this model 1:1.
Fast Dispatch
MSBL replacements are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Recommended MSBL Replacements
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