Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC25X400U
The AirTAC Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC25X400U is a genuine double-acting aluminum-barrel mini round cylinder with a Ø25mm bore and 400mm 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
- Stroke400 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 MBLC25X400U
The AirTAC MBLC25X400U is a double-acting mini round cylinder engineered for a 400 mm stroke within a compact, riveted rolling-packed aluminum barrel. Delivering 245 N of push force at 0.5 MPa, it relies on a screw-adjustable pneumatic cushion at both ends to decelerate the piston smoothly near stroke extremes. This tunable end-of-stroke control is critical for a long-travel small-bore rod, cutting impact noise and protecting the flat-end U back cover from shock. Because this SKU lacks the -S suffix, it is built without a magnet and cannot accept a CMSG, DMSG or EMSG position sensor.
Built around a Ø10 mm carbon-steel rod with 20 um hard-chrome plating, the unit operates at speeds from 30-800 mm/s. The heterogeneous two-way grease-retaining piston seal maintains lubrication across the long 400 mm travel. Note that the pneumatic cushion only decelerates the load near the ends; it is not a mechanical lock, so the rod will drift if air pressure is lost or the valve centers.
Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC25X400U Technical Specifications
| Model | Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC25X400U |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder |
| Bore size | Ø25 mm |
| Stroke | 400 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 MBLC25X400U
| MBL | Aluminum-barrel mini round cylinder, double acting. |
|---|---|
| 25 | Bore size in mm. |
| ×400 | 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 MBLC25X400U Is Used
PCB Edge Guiding
Extends 400 mm to reposition thin electronic panel edge-guides on a long conveyor belt, using the adjustable cushion to prevent sudden jerks that could misalign delicate components.
Textile Beam Indexing
Pushes a lightweight fabric beam across a 400 mm span into a staging cradle, relying on the 245 N thrust and smooth end-of-stroke deceleration to avoid snapping the yarn tension.
Pharma Tray Sorting
Transfers empty pharmaceutical trays down a long linear lane, where the tunable air cushion ensures the flat-end U cover survives thousands of rapid 30-800 mm/s cycles without impact wear.
Is the Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC25X400U the Right Cylinder?
Select this 25 mm bore when an application demands a long 400 mm reach but limited space, generating 245 N push and 206 N pull at 0.5 MPa. If you need less force in an even tighter footprint, the neighboring 20 mm bore offers 157 N push. If your load requires more thrust, stepping up to the 32 mm bore yields 402 N push at 0.5 MPa. Choose the MBLC over the fixed-bumper MBL when cycling speeds are high enough that a rubber stop cannot adequately absorb the kinetic energy of a 400 mm traverse.
For a 400 mm stroke on a Ø10 mm rod, side-load tolerance is low and rod bending is a real risk. To manage this, use an external guide rail, select a CA or SDB pivot bracket to accommodate arcing loads, or switch to an MBLD double-rod cylinder. This U back cover provides rigid rear mounting, and the standard PT port thread matches the G1/8 porting.
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 MBLC25X400U FAQ
This 25 mm bore cylinder generates 245 N push and 206 N pull at 0.5 MPa, 343 N push at 0.7 MPa, and a maximum theoretical 50 kgf at 1.0 MPa. It features a G1/8 port with PT thread form, a Ø10 mm rod, and an M10x1.25 rod-end thread.
No, this specific SKU lacks the -S magnet option, meaning it cannot host a CMSG, DMSG or EMSG sensor switch. If you require electronic or reed position feedback along the 400 mm stroke, you must specify an MBLC25X400SU model.
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