Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC25X300U
The AirTAC Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC25X300U is a genuine double-acting aluminum-barrel mini round cylinder with a Ø25mm bore and 300mm 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
- Stroke300 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 MBLC25X300U
The AirTAC MBLC25X300U is a double-acting, adjustable-air-cushion mini cylinder with a 25mm bore and 300mm stroke. It generates 245 N of push force and 206 N of pull force at 0.5 MPa, making it well-suited for driving lighter mechanisms over longer travel distances. The U suffix denotes a rigid flat-end back cover for straightforward inline mounting.
Unlike the base MBL series which relies on a fixed rubber bumper, this MBLC variant features a screw-tunable pneumatic cushion at both ends. This allows you to dial in the end-of-stroke deceleration to match your load and speed, absorbing kinetic energy smoothly rather than slamming into the end covers. The body utilizes a riveted rolling-packed aluminum barrel for a compact footprint, while the Ø10 mm carbon-steel rod features 20 µm hard-chrome plating to resist wear. Note that because this SKU lacks the -S magnet suffix, it cannot accept a CMSG, DMSG, or EMSG position sensor.
Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC25X300U Technical Specifications
| Model | Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC25X300U |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder |
| Bore size | Ø25 mm |
| Stroke | 300 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 MBLC25X300U
| MBL | Aluminum-barrel mini round cylinder, double acting. |
|---|---|
| 25 | Bore size in mm. |
| ×300 | 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 MBLC25X300U Is Used
Textile Beam Loom
Drives the 300mm rapiers or warp beam levers in a textile loom, where the 245N push force shifts the yarn guide smoothly while the air cushion prevents jarring stops that would snap fine threads.
PCB Shuttle Conveyor
Indexing a populated PCB shuttle 300mm down a SMT line; the tunable cushion slows the 206N pull-stroke at the end to protect delicate solder joints from sudden impact shocks.
Carton Flap Folder
Folds the trailing dust flaps on a packaging line carton over a 300mm arc, using the compact riveted aluminum body to fit within tight machine guarding while cycling rapidly.
Is the Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC25X300U the Right Cylinder?
At 0.5 MPa, this 25mm bore cylinder provides 245 N push and 206 N pull force. If your application requires less force, step down to the 20mm bore (157 N push / 132 N pull). If you need to move a heavier mass, step up to the 32mm bore (402 N push / 346 N pull). Choose this MBLC cushioned version over the standard MBL when your cycle speeds are high or the moving mass is significant enough that a fixed rubber bumper would fail prematurely.
Because the 300mm stroke is relatively long for a small Ø10 mm rod, side-load tolerance is low and the rod is susceptible to bending. To manage this, use an external guide rail, select a CA or SDB pivot mounting to accommodate arcing loads, or switch to an MBLD double-rod cylinder. Keep in mind the adjustable air cushion only decelerates the piston near the stroke ends; it is not a brake, and the cylinder will not hold position if air pressure is lost or the valve centers. Replacement specs: 25mm bore, 300mm stroke, G1/8 port, M10x1.25 rod thread, PT thread form, U flat-end back cover, no 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 MBLC25X300U FAQ
At 0.5 MPa, it delivers 245 N push and 206 N pull. At 0.7 MPa, it delivers 343 N push. The maximum theoretical force is 50 kgf at 1.0 MPa.
A screw needle valve at each end lets you tune the pneumatic exhaust restriction. By adjusting the needle, you control how fast the trapped air bleeds out, decelerating the piston smoothly before it hits the cover. This is critical for the 300mm stroke to prevent end-cap damage, but it does not lock or hold the load in place.
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