This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is B01-MBL20X50U — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the B01-MBL20X50U in place of this model. The MBL replacement upgrades to a riveted rolling-packed body and the current CMSG / DMSG / EMSG sensor switches (the MAL used CS1-M / DS1-M).
Airtac B01-MAL Special Purpose Cylinder B01-MAL20X50U
The AirTAC Airtac B01-MAL Special Purpose Cylinder B01-MAL20X50U is a double-acting aluminum-barrel mini round cylinder with a Ø20mm bore and 50mm stroke, G1/8 air ports and a fixed rubber bumper. This model is discontinued — the drop-in replacement is the B01-MBL20X50U, which matches its bore, stroke, force and mounting.
- BoreØ20 mm
- Stroke50 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM8×1.25
- StatusDiscontinued → B01-MBL20X50U
About the Airtac B01-MAL Special Purpose Cylinder B01-MAL20X50U
The AirTAC B01-MAL20X50U is a discontinued double-acting aluminum mini round cylinder. The leading "B01-" prefix designates this as an application-dedicated, customer-specified variant of the base MAL20X50U, meaning it shares the exact same 20 mm bore, 50 mm stroke, and physical specs without any mechanical alterations. Delivering 157 N of push force at 0.5 MPa, it is engineered for compact spaces requiring pneumatic actuation. AirTAC ended the MAL line, making the MBL20X50U the exact drop-in replacement—retaining the same bore, stroke, output force, G1/8 port, and U flat-end rear cover.
This legacy model features a threaded front and back cover assembly, whereas the modern MBL replacement utilizes a riveted rolling-packed body for secure construction. The Ø8 mm carbon-steel rod is protected by 20 µm hard-chrome plating and guided by a self-lubricating front-cover bearing. Because this specific SKU lacks the -S magnet code, it cannot support a position sensor. Additionally, end-of-stroke deceleration relies on a fixed rubber bumper rather than an adjustable air cushion.
Airtac B01-MAL Special Purpose Cylinder B01-MAL20X50U Technical Specifications
| Model | Airtac B01-MAL Special Purpose Cylinder B01-MAL20X50U |
|---|---|
| Series | MAL aluminum-barrel mini round cylinder (discontinued) |
| Replacement | B01-MBL20X50U |
| Bore size | Ø20 mm |
| Stroke | 50 mm |
| Acting type | Double acting |
| Port size | G1/8 |
| Rod thread | M8×1.25 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.1 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Fixed rubber bumper |
| Max standard stroke | Up to 500 mm |
Specifications follow the official AirTAC MAL datasheet (now discontinued). The B01-MBL20X50U carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
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 | |
The B01-MBL20X50U produces the same force from the same bore — a true drop-in on output. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac B01-MAL Special Purpose Cylinder B01-MAL20X50U
| MAL | Aluminum-barrel mini round cylinder, double acting (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 (MBL uses CMSG/DMSG/EMSG). |
| CA / U / CM | Back cover: CA pivot, U flat-end or CM round-end. |
Replacement mapping: MAL → MBL, MSAL → MSBL, MTAL → MTBL, MALD → MBLD, MALJ → MBLJ.
Where the Airtac B01-MAL Special Purpose Cylinder B01-MAL20X50U Is Used
PCB Depaneling Router
Pushes a carrier plate against a fixed stop in a compact electronics routing fixture, utilizing the 157 N push force at 0.5 MPa to hold small boards steady without crushing components.
Pharmacy Drawer Latch
Extends a 50 mm pin to lock an automated dispensing cabinet drawer, relying on the U flat-end cover for rigid rear mounting and the double-acting action for positive retraction.
Micro-Clamp Actuator
Cycles a small holding jaw in a watch-making assembly press, where the 30-800 mm/s speed range and self-lubricating bearing guide provide smooth, chatter-free movement in a tight space.
Replacing the Airtac B01-MAL Special Purpose Cylinder B01-MAL20X50U with B01-MBL20X50U
To replace the discontinued B01-MAL20X50U, order the MBL20X50U. This drop-in upgrade matches the 20 mm bore, 50 mm stroke, PT thread, G1/8 port, and U flat-end back cover. Since this SKU lacks a magnet, you cannot mount a sensor; if position detection is needed for the replacement, order an MBL20X50US and note that the modern MBL uses CMSG, DMSG, or EMSG switches rather than the older CS1-M/DS1-M sensors. The fixed rubber bumper on this cylinder is not adjustable; if your application requires end-cushioning, step up to the current-line MBLC.
When sizing, verify if 157 N push at 0.5 MPa is sufficient. If you need less force, there is no smaller standard MAL bore, so you must reduce operating pressure. If you need more power, step up to the 25 mm bore, which provides 245 N push at 0.5 MPa. Remember that a plain MAL/MBL does not hold its position or load when air is lost—the rod drifts—so install an external rod lock or pilot-operated check valve for vertical loads.
Upgrade checklist
- ✓ Order the B01-MBL20X50U (same bore/stroke/force)
- ✓ Same G1/8 port and mounting accessories
- ✓ Sensor: swap CS1-M/DS1-M → CMSG/DMSG/EMSG
- ✓ Need a cushion? use MBLC (adjustable air cushion)
- ✓ 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 0.1 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Front/rear covers are threaded — not intended for field disassembly.
- check Use the correct mounting accessory (LB / FA / SDB) and back cover (CA / U / CM).
- check For new builds, specify the B01-MBL20X50U instead of this discontinued model.
Airtac B01-MAL Special Purpose Cylinder B01-MAL20X50U FAQ
Yes, the AirTAC B01-MAL20X50U is discontinued. The exact drop-in replacement is the MBL20X50U, which shares the same 20 mm bore, 50 mm stroke, G1/8 port, and U flat-end cover. The "B01-" prefix simply marked this as an application-dedicated variant of the base MAL20X50U; mechanically, the MBL20X50U matches it exactly, though the new body uses a riveted rolling-packed design instead of threaded covers.
The 20 mm bore provides a push force of 157 N and a pull force of 132 N at 0.5 MPa, a push force of 220 N at 0.7 MPa, and a maximum theoretical force of 32 kgf at 1.0 MPa. It uses a fixed rubber bumper, not an adjustable cushion. The cylinder does not hold its position or load when air is lost; the rod will drift, requiring an external rod lock for suspended loads.
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Drop-in Upgrade
The B01-MBL20X50U replaces this model 1:1.
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MBL replacements usually ship in 3-4 days.
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