Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC40X25SCA
The AirTAC Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC40X25SCA is a genuine double-acting aluminum-barrel mini round cylinder with a Ø40mm bore and 25mm stroke, G1/4 air ports and a fixed rubber bumper. Its compact riveted body suits push, hold and clamp motion in tight machine spaces.
- BoreØ40 mm
- Stroke25 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionRubber bumper (MBLC variant: adjustable air cushion)
About the Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC40X25SCA
The AirTAC MBLC40X25SCA is a compact double-acting aluminum mini cylinder featuring a screw-adjustable pneumatic cushion at both stroke ends. Delivering 628 N of push force and 528 N of pull force at 0.5 MPa, this 40 mm bore unit is built for short 25 mm strokes requiring abrupt direction changes. Tuning the cushion needle lets you decelerate the piston smoothly, protecting the end covers from impact on high-frequency cycles.
This SKU includes a CA pivot clevis back cover that swings on a pin to accommodate arcing or angular loads, alongside a built-in magnet (-S) for CMSG, DMSG, or EMSG sensor switches. The riveted rolling-packed aluminum barrel keeps the body light for tight spaces, while the Ø16 mm carbon-steel rod with 20 µm hard-chrome plating resists wear against the heterogeneous two-way grease-retaining piston seal.
Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC40X25SCA Technical Specifications
| Model | Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC40X25SCA |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder |
| Bore size | Ø40 mm |
| Stroke | 25 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M12×1.25 |
| 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 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 MBLC40X25SCA
| MBL | Aluminum-barrel mini round cylinder, double acting. |
|---|---|
| 40 | Bore size in mm. |
| ×25 | 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 MBLC40X25SCA Is Used
Stamping Press Ejection
Uses the 628 N push force to knock small metal blanks out of a progressive die, relying on the adjustable cushion to soften the abrupt 25 mm stroke end and protect the die fixture.
PCB Test Socket Clamping
Secures circuit boards during automated flying-probe testing, using the -S magnet and a DMSG electronic sensor to confirm the 25 mm stroke position before high-voltage checks begin.
Package Diverter Arm
Pivots a routing gate on a packaging line via the CA clevis, absorbing angular loads while the cushioned ends prevent shock vibration from loosening the conveyor frame.
Is the Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC40X25SCA the Right Cylinder?
Select this 40 mm bore when an application demands 628 N of thrust at 0.5 MPa but lacks the physical envelope for a larger unit. If you need less force, stepping down to the 32 mm bore yields 402 N of push force; if you require more power, the 50 mm bore provides 981 N. Choose this MBLC variant over the base MBL when your cycle speeds are high enough that a fixed rubber bumper would degrade, using the adjustable air cushion to finely tune end-of-stroke deceleration. Note that the air cushion only slows the piston near the ends and does not lock the rod; if you need to hold position without live air pressure, install an external rod lock or pilot-operated check valve.
For replacement matching, verify the 40 mm bore, 25 mm stroke, G1/4 port, PT thread form, CA pivot back cover, and the -S magnet. The short 25 mm stroke keeps the Ø16 rod highly rigid, minimizing bending concerns even under brisk actuation.
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 MBLC40X25SCA FAQ
This 40 mm bore cylinder uses a G1/4 port and delivers a push force of 628 N and a pull force of 528 N at 0.5 MPa. At 0.7 MPa, the push force increases to 880 N. The maximum theoretical force is 128 kgf at 1.0 MPa.
Unlike the fixed rubber bumper on the base MBL, this MBLC features a screw-tunable needle at both ends that traps a pocket of exhaust air to decelerate the piston before it hits the end cover. You adjust the needle to match the load and speed, reducing impact noise and wear on high-frequency strokes.
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