Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X40SU
The AirTAC Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X40SU is a genuine double-acting aluminum-barrel mini round cylinder with a Ø20mm bore and 40mm stroke, G1/8 air ports and a fixed rubber bumper. Its compact riveted body suits push, hold and clamp motion in tight machine spaces.
- BoreØ20 mm
- Stroke40 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM8×1.25
- CushionRubber bumper (MBLC variant: adjustable air cushion)
About the Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X40SU
The AirTAC MBLC20X40SU is a double-acting aluminum mini cylinder engineered for compact actuation where precise end-of-stroke control is essential. It delivers a push force of 157 N and a pull force of 132 N at 0.5 MPa, making it well-suited for short 40 mm movements in tight assembly machinery. The defining feature over the base MBL is the screw-adjustable pneumatic cushion at both ends, which decelerates the piston smoothly to minimize impact, noise, and vibration on faster or heavier moves.
This SKU includes a built-in magnet (the -S code) for compatibility with AirTAC CMSG, DMSG, and EMSG sensor switches to detect rod position along its travel. It features a riveted rolling-packed aluminum barrel for a lightweight yet rigid body, paired with a heterogeneous two-way grease-retaining piston seal. The Ø8 mm carbon-steel rod is treated with a 20 µm hard-chrome plating to resist wear, and the U flat-end back cover provides a rigid, default rear mounting face.
Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X40SU Technical Specifications
| Model | Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X40SU |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder |
| Bore size | Ø20 mm |
| Stroke | 40 mm |
| Acting type | Double acting |
| Port size | G1/8 |
| 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 MBLC Aluminum Alloy Mini Air Cylinder MBLC20X40SU
| MBL | Aluminum-barrel mini round cylinder, double acting. |
|---|---|
| 20 | Bore size in mm. |
| ×40 | 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 MBLC Aluminum Alloy Mini Air Cylinder MBLC20X40SU Is Used
PCB Pick & Place
Ideal for driving small vacuum pickups on electronic assembly lines, where the 40 mm stroke and 157 N force move delicate components and the air cushion prevents harsh end-stop bouncing.
Pharmacy Vial Sorting
Pushes lightweight plastic vials into a sorting lane using a short 40 mm stroke, with the tunable cushion ensuring quiet operation and preventing the small Ø8 mm rod from jarring against the end covers.
Connector Pin Insertion
Provides the exact 132 N pull force needed to retract a pin-feeding jig in connector manufacturing, using the built-in magnet to confirm the home position via a DMSG solid-state sensor.
Is the Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X40SU the Right Cylinder?
Select this 20 mm bore when your application requires exactly 157 N of push force at 0.5 MPa within a very compact footprint. If you need less force, there is no smaller bore in the MBL/MBLC family, so you would instead reduce your operating pressure. If your load requires more power, stepping up to the 25 mm bore increases your push force to 245 N at 0.5 MPa. Choose this MBLC cushioned version over the fixed rubber bumper of the base MBL when your cycle speeds are high enough that impact wear becomes a concern.
The adjustable air cushion only decelerates the piston near the stroke ends; it is not a lock or brake. A plain double-acting cylinder does not hold position when air is lost or the valve centers, so the rod will drift. For position holding without live air, an external rod lock or pilot-operated check valve is required. This specific configuration uses a PT port thread, a G1/8 port size, an M8x1.25 rod-end thread, and a U flat-end back cover.
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 MBLC Aluminum Alloy Mini Air Cylinder MBLC20X40SU FAQ
At 0.5 MPa, this 20 mm bore cylinder provides 157 N of push force and 132 N of pull force. At 0.7 MPa, the push increases to 220 N. The maximum theoretical force is 32 kgf at 1.0 MPa. It uses a Ø8 mm carbon-steel rod with an M8x1.25 rod-end thread and a G1/8 port.
The cushion is a screw-tunable needle valve at both ends that traps exhaust air to decelerate the piston smoothly before it hits the end cover, reducing impact on fast cycles. The -S code indicates a built-in magnet, allowing you to mount CMSG reed or DMSG/EMSG electronic sensors on the exterior barrel for rod position detection.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X40SU
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.