Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC25X40SCA
The AirTAC Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC25X40SCA is a genuine double-acting aluminum-barrel mini round cylinder with a Ø25mm 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.
- BoreØ25 mm
- Stroke40 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionRubber bumper (MBLC variant: adjustable air cushion)
About the Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC25X40SCA
The AirTAC MBLC25X40SCA is a double-acting aluminum mini cylinder engineered for compact actuation where arcing motion is present. It produces 245 N of push force and 206 N of pull force at 0.5 MPa. The 40 mm stroke is optimal for short-travel mechanisms, and the CA pivot clevis back cover allows the body to swing on a pin, accommodating angular rod deflection during movement. Unlike the base MBL which relies on a fixed rubber bumper, this MBLC variant features a screw-adjustable pneumatic cushion at both ends to smoothly decelerate the piston near stroke limits.
This tunable deceleration is critical for reducing end-cover impact, mechanical noise, and vibration when cycling faster or moving heavier masses. The riveted rolling-packed aluminum barrel keeps the envelope light and small for tight spaces, while the 20 µm hard-chrome plated carbon-steel rod works with a heterogeneous two-way grease-retaining piston seal for lasting friction control. The integrated -S magnet enables position detection using an AirTAC CMSG (reed), DMSG, or EMSG (electronic solid-state) sensor switch. Standard PT tapered porting and a G1/8 thread match the 25 mm bore specifications.
Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC25X40SCA Technical Specifications
| Model | Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC25X40SCA |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder |
| Bore size | Ø25 mm |
| Stroke | 40 mm |
| Acting type | Double acting |
| Port size | G1/8 |
| Rod thread | M10×1.25 |
| 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 (Ø25mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 245 N | 206 N |
| 0.7 MPa | 344 N | — |
| Max (@1.0 MPa) | 50 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 MBLC25X40SCA
| MBL | Aluminum-barrel mini round cylinder, double acting. |
|---|---|
| 25 | 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 MBLC25X40SCA Is Used
Textile Loom Guide
Drives a 40 mm yarn tensioning lever on a weaving loom, using the CA pivot to absorb angular rod stress while the air cushion prevents snapping at high cycling speeds.
Pouch Sealing Arm
Actuates a sealing jaw on a vertical form-fill-seal machine, where 245 N of push force secures the packaging film and the cushion softens the 40 mm rapid closure.
Carton Flap Folder
Folds minor flaps on a corrugated case packer, relying on the tunable end-of-stroke deceleration to prevent denting the cardboard during 40 mm fast strokes.
Is the Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC25X40SCA the Right Cylinder?
When sizing this 25 mm bore actuator, compare its 245 N push force at 0.5 MPa against your actual load. Stepping down to the 20 mm bore drops the output to 157 N, whereas moving up to the 32 mm bore increases the push force to 402 N. Choose this MBLC over the fixed-bumper MBL when your cycle rates are high or the moved mass is heavy enough that a standard rubber bumper would wear out prematurely. For replacement, match the 25 mm bore, 40 mm stroke, G1/8 port, PT thread, CA pivot back cover, and the -S magnet. Remember that the adjustable air cushion only decelerates the piston near the ends; it is not a brake, so the rod will drift if air pressure is lost or the valve centers.
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 MBLC25X40SCA FAQ
At 0.5 MPa, this 25 mm bore cylinder provides 245 N of push force and 206 N of pull force. At 0.7 MPa, the push increases to 343 N. The maximum theoretical force is 50 kgf at 1.0 MPa operating pressure.
A screw-tunable needle at both stroke ends bleeds trapped air to smoothly decelerate the piston, protecting the end covers from impact on fast or heavy moves. You tune the bleed rate to match your load and speed; it only decelerates near the ends and does not lock or hold the rod position.
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