Airtac MBL Aluminum Alloy Mini Cylinder MBL20X75U
The AirTAC MBL Aluminum Alloy Mini Cylinder MBL20X75U is a genuine double-acting aluminum-barrel mini round cylinder with a Ø20mm bore and 75mm stroke, 1/8" air ports and a fixed rubber bumper. Its compact riveted body suits push, hold and clamp motion in tight machine spaces.
- BoreØ20 mm
- Stroke75 mm
- Port size1/8"
- Acting typeDouble acting
- Rod threadM8×1.25
- CushionRubber bumper (MBLC variant: adjustable air cushion)
- 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 MBL Aluminum Alloy Mini Cylinder MBL20X75U
The AirTAC MBL20X75U is a compact double-acting aluminum mini round cylinder engineered for tight machine spaces. It features a 20mm bore and a 75mm stroke, generating 157 N of push force and 132 N of pull force at 0.5 MPa. The U suffix indicates a flat-end rigid back cover, providing a stable, fixed rear mounting footprint for straightforward in-line actuation.
Built with a riveted rolling-packed aluminum barrel, the body is permanently crimped to the front and rear covers, prioritizing a lightweight, small footprint over the rebuildability of a tie-rod design. Internal longevity is driven by a heterogeneous two-way piston seal that actively retains grease, paired with a carbon-steel piston rod hardened with 20 µm chrome plating to resist wear and corrosion. Note that because this specific SKU lacks the -S suffix, it has no internal magnet and cannot be fitted with a CMSG, DMSG, or EMSG position sensor.
Airtac MBL Aluminum Alloy Mini Cylinder MBL20X75U Technical Specifications
| Model | Airtac MBL Aluminum Alloy Mini Cylinder MBL20X75U |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder |
| Bore size | Ø20 mm |
| Stroke | 75 mm |
| Acting type | Double acting |
| Port size | 1/8" |
| Rod thread | M8×1.25 |
| 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 – 800 mm/s |
| Cushion | Rubber bumper (MBLC variant: adjustable air cushion) |
| Max stroke | Up to 500 mm |
Specifications follow the official AirTAC MBL series datasheet. Confirm against the product label before installation. Standard stroke to 500 mm (special order to 800 mm). 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 | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac MBL Aluminum Alloy Mini Cylinder MBL20X75U
| MBL | Aluminum-barrel mini round cylinder, double acting. |
|---|---|
| 20 | Bore size in mm. |
| ×75 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related variants: MBLC (adjustable cushion), MBLD (double rod), MBLJ (adjustable stroke), MSBL/MTBL (single acting).
Where the Airtac MBL Aluminum Alloy Mini Cylinder MBL20X75U Is Used
PCB Test Handler Ejection
Uses the 157 N push force at 0.5 MPa to eject finished printed circuit boards from an in-line testing fixture, fitting neatly within the tight 20mm spacing of the testing bay.
Small Parts Sorter Diverter
Actuates a lightweight pneumatic flap to divert small plastic injection-molded components down a reject chute, relying on the rigid U flat-end back cover for stable fixed mounting.
Microfluidic Valve Actuation
Drives the 75mm stroke to index a pinching mechanism that opens and closes medical microfluidic tubing sets, benefiting from the grease-retaining two-way piston seal for consistent low-friction movement.
Is the Airtac MBL Aluminum Alloy Mini Cylinder MBL20X75U the Right Cylinder?
At 0.5 MPa, this 20mm bore yields 157 N of push force. If you need less power, the next size down does not exist in the MBL line, making this the most compact option. If your mechanism requires greater thrust, stepping up to the 25mm bore provides 245 N of push force. This base MBL uses a fixed rubber bumper to soften end-of-stroke impacts; for faster cycling or heavier moving masses, upgrade to the MBLC variant, which features an adjustable air cushion. If your application needs the rod to stay put or hold a load when air pressure is lost or the valve is centered, note that the bumper is not a lock; you must add an external rod lock or a pilot-operated check valve.
When replacing this unit, match the 20mm bore, 75mm stroke, G1/8 port size, PT tapered port thread, U flat-end back cover, and the absence of a magnet. Because the 75mm stroke is moderate, the Ø8mm rod handles standard axial loads well, but any lateral side-loading should be minimized to avoid bending the small rod.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
- ✓ Side load — consider a guided cylinder
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 piston rod.
- check Adjust end cushion screws for smooth stops.
- check Use correct mounting accessory (LB / FA / SDB) and back cover (CA pivot / U flat-end).
- check Installation by qualified personnel per AirTAC docs.
Airtac MBL Aluminum Alloy Mini Cylinder MBL20X75U FAQ
At 0.5 MPa, the 20mm bore provides 157 N of push force and 132 N of pull force. At 0.7 MPa, the push force increases to 220 N, with a maximum theoretical force of 32 kgf at 1.0 MPa. The double-acting cylinder operates at a speed of 30-800 mm/s.
No. The base MBL20X75U uses a fixed rubber bumper to absorb end-of-stroke impact; it does not have an adjustable cushion screw. If your application requires adjustable air cushioning for heavier loads or higher speeds, you must use the MBLC variant. Additionally, this specific SKU has no magnet and cannot accept position sensors.
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Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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