Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC40X55SCA
The AirTAC Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC40X55SCA is a genuine double-acting aluminum-barrel mini round cylinder with a Ø40mm bore and 55mm 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
- Stroke55 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 MBLC40X55SCA
The AirTAC MBLC40X55SCA is a double-acting, 40mm bore aluminum mini cylinder with a 55mm stroke. It generates 628 N of push force and 528 N of pull force at 0.5 MPa. Unlike the base MBL which relies on a fixed rubber bumper, this MBLC variant features a screw-adjustable pneumatic cushion at both ends. You tune the needle to smoothly decelerate the piston near stroke extremes, cutting end-cover impact and vibration on faster or heavier moves.
This specific SKU includes a built-in magnet (the S code) for use with AirTAC CMSG reed or DMSG and EMSG solid-state sensor switches to detect rod position. The CA back cover provides a pivot or clevis mount that swings on a pin, accommodating arcing or angular loads. The 16mm carbon-steel rod features 20 um hard-chrome plating, and the riveted rolling-packed barrel keeps the body compact for tight machine spaces.
Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC40X55SCA Technical Specifications
| Model | Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC40X55SCA |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder |
| Bore size | Ø40 mm |
| Stroke | 55 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 MBLC40X55SCA
| MBL | Aluminum-barrel mini round cylinder, double acting. |
|---|---|
| 40 | Bore size in mm. |
| ×55 | 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 MBLC40X55SCA Is Used
CNC Lathe Bar Feeder
Pushes 12-foot steel bars into the spindle; the 628 N push force handles the heavy mass while the CA pivot absorbs slight misalignment during the feed.
Pallet Diverter Arm
Swings a routing gate on a packaging line at high speed; the tunable air cushion prevents the 55mm stroke from slamming the pivot bracket at cycle end.
PCB Board Stacking Head
Lifts populated circuit boards from a conveyor; the built-in magnet triggers an EMSG solid-state switch to confirm the 55mm lift position for the PLC.
Is the Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC40X55SCA the Right Cylinder?
If your application requires less force, step down to the 32mm bore which yields 402 N of push at 0.5 MPa. If you need more power, the 50mm bore provides 981 N of push. Choose this MBLC over the fixed-bumper MBL when your cycle speeds are high or the moved mass is heavy enough that a rubber bumper would wear out or cause jarring stops. Remember that the adjustable air cushion only decelerates the piston near the ends; it is not a lock. A plain double-acting cylinder does not hold position when air is lost or the valve centers, so add an external rod lock or pilot-operated check for fail-safe holding.
This replacement SKU matches a 40mm bore, 55mm stroke, G1/4 port, PT tapered thread, CA pivot back cover, and includes the -S magnet for sensor compatibility.
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 MBLC40X55SCA FAQ
At 0.5 MPa, this 40mm bore cylinder provides 628 N of push force and 528 N of pull force. At 0.7 MPa, it delivers 880 N of push. The theoretical maximum force is 128 kgf at 1.0 MPa.
You screw-tune the cushion needle at both ends to trap a pocket of air that decelerates the piston smoothly before it hits the end cover. This is critical for the 55mm stroke when cycling fast, as it eliminates the harsh impact a fixed rubber bumper would cause. The cushion only slows the rod near the stroke ends; it does not lock or hold the load.
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