Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC40X250SCA
The AirTAC Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC40X250SCA is a genuine double-acting aluminum-barrel mini round cylinder with a Ø40mm bore and 250mm 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
- Stroke250 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 MBLC40X250SCA
The AirTAC MBLC40X250SCA is a double-acting aluminum mini cylinder engineered for a 250 mm stroke, delivering 628 N of push force and 528 N of pull force at 0.5 MPa. It features a screw-adjustable pneumatic air cushion at both stroke ends, allowing you to tune the deceleration profile and eliminate end-cover impact when moving heavier masses at higher velocities. Unlike a fixed rubber bumper, this needle-bleed cushioning smoothly decelerates the load without locking the piston.
This SKU includes a CA pivot back cover that swings on a pin to accommodate arcing or angular loads, making it far superior to a rigid flat-end mount for pivoting mechanisms. The -S designation indicates a built-in magnet for position detection via AirTAC CMSG reed or DMSG/EMSG electronic solid-state sensor switches. Constructed with a riveted rolling-packed aluminum barrel and a 20 um hard-chrome plated carbon-steel rod, it provides compact, lightweight durability in tight assembly spaces.
Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC40X250SCA Technical Specifications
| Model | Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC40X250SCA |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder |
| Bore size | Ø40 mm |
| Stroke | 250 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 MBLC40X250SCA
| MBL | Aluminum-barrel mini round cylinder, double acting. |
|---|---|
| 40 | Bore size in mm. |
| ×250 | 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 MBLC40X250SCA Is Used
Pneumatic Rotary Indexer
Drives a 250 mm stroke to load heavy aluminum billets onto a rotary table, using the CA pivot to absorb angular misalignment while the air cushion prevents harsh stops.
Packaging Diverter Arm
Actuates a pivoting diverter gate on a high-speed packaging line, relying on the tunable end-cushioning to cycle rapidly without shaking the machine frame.
PCB Panel Ejection
Pushes populated circuit board trays out of a testing fixture, utilizing the built-in magnet and DMSG sensor to confirm full extension before the robotic picker engages.
Is the Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC40X250SCA the Right Cylinder?
Select this 40 mm bore when your application requires the 628 N push force at 0.5 MPa but you need the extended 250 mm travel. If your load is lighter, stepping down to the 32 mm bore yields 402 N of push force, whereas stepping up to the 50 mm bore provides 981 N for heavier payloads. Because this model features a 250 mm stroke on a 16 mm rod, it has a lower tolerance for side-loading; the CA pivot back cover helps mitigate angular stress, but you should still utilize an external guide rail to prevent rod bending over this distance. For exact replacements, match the 40 mm bore, 250 mm stroke, G1/4 port, PT thread, CA pivot cover, and the -S magnet.
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 MBLC40X250SCA FAQ
This 40 mm bore cylinder uses a G1/4 port and a 16 mm rod. At 0.5 MPa it provides 628 N push and 528 N pull force. At 0.7 MPa, push increases to 880 N. The maximum theoretical force is 128 kgf at 1.0 MPa.
A screw-tunable needle at both ends traps a pocket of exhaust air to decelerate the piston smoothly before it hits the end cover. You adjust it to match your specific load and speed, which is critical for high-frequency cycling. It only decelerates near the ends and does not lock or hold the rod position.
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Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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