Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X300-10S
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X300-10S is a genuine double-acting aluminum-barrel mini cylinder with a Ø25mm bore, a 300mm nominal stroke and a rear adjustable-stroke stopper — trim up to 10mm for a usable window of 290–300mm. Adjustable air cushion (both ends).
- BoreØ25 mm
- Stroke300 mm
- Adjustable290–300 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable air cushion (both ends)
About the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X300-10S
The AirTAC MBLCJ25X300-10S is a compact double-acting mini cylinder featuring a 25mm bore and a 300mm stroke. It integrates a rear travel stopper allowing you to trim up to 10mm, creating a precise 290-300mm usable extension window. Delivering 245N push force at 0.5 MPa, it is equipped with an adjustable air cushion at both ends to tune end-of-stroke deceleration, protecting the end covers during high-speed moves. The built-in magnet (-S) enables position detection.
This model uses a G1/8 port and a Ø10mm carbon-steel rod with 20µm hard-chrome plating. Because the 300mm stroke is the maximum standard for this bore, the relatively small 10mm rod requires an external guide to prevent side-load bending. The riveted rolling-packed aluminum barrel and grease-retaining piston seal ensure reliable service in tight spaces.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X300-10S Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X300-10S |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø25 mm |
| Nominal stroke | 300 mm |
| Adjustable window | 290–300 mm (trim 10 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 | Adjustable air cushion (both ends) |
| Max standard stroke | Up to 300 mm |
The rear stopper sets the end position — it is a travel stop, not a lock. Overall length = A + 2 × stroke + adjustable stroke. MBLJ/MBLCJ mounting is Basic / FA / LB only (no SDB, no back-cover code). 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 margin.
Model Code: Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X300-10S
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 25 | Bore size in mm. |
| ×300 | Nominal stroke length in mm. |
| -10 | Adjustable-stroke amount (mm you can trim at the rear). |
| S | Optional built-in magnet for a CMSG/DMSG/EMSG sensor switch. |
Related: MBLJ (adjustable stroke, fixed bumper), MBL (fixed stroke), MBLD (double rod).
Where the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X300-10S Is Used
PCB Edge Conveyor Routing
Uses the 290-300mm stroke window to precisely space and route printed circuit boards between assembly machines, relying on the 245N force to overcome guide friction.
Textile Yarn Tensioning Gate
Employs the tunable air cushion to softly decelerate the long 300mm travel, preventing sudden snaps that would break delicate yarn threads during high-speed loom operations.
Packaging Film Deflection Roller
Adjusts the roller position within the 10mm trim window to set packaging film tension, using the -S magnet to confirm the exact end-of-trroke position for the PLC.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X300-10S the Right Cylinder?
Choose this 25mm bore when you need 245N of thrust at 0.5 MPa over a long 300mm reach. If your application requires less force, stepping down to the 20mm bore provides 157N push, while stepping up to the 32mm bore yields 402N. Compared to the MBLJ, this MBLCJ variant replaces the fixed rubber bumper with screw-tunable air cushions for heavier or faster loads. The replacement match is bore 25, stroke 300, adjust 10, port G1/8, rod thread M10x1.25, PT thread, basic mounting, with a magnet.
Mounting is limited to Basic, FA, or LB styles; no back-cover or SDB pivot is available. At 300mm, the overall length (A + 2 x stroke + adjust) is substantial, so external support is critical. Remember that the rear adjuster is a travel stop, and the air cushion only decelerates; neither mechanism locks the rod, so an external holding device is required to maintain position without live air.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Adjustable window fits your end position
- ✓ Adjuster is a travel stop, not a lock
- ✓ Magnet (S) for sensors?
- ✓ Side load — add a guide on long strokes
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Set the rear stopper for the end position (a travel stop, not a lock).
- check Avoid side load; add an external guide on long strokes.
- check Mounting: Basic / FA flange / LB foot (no SDB, no back-cover code).
- check Installation by qualified personnel per AirTAC docs.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X300-10S FAQ
At 0.5 MPa, this 25mm bore cylinder provides 245N of push force and 206N of pull force. At 0.7 MPa, the push force increases to 343N. The maximum theoretical force is 50 kgf at 1.0 MPa.
The adjustable stroke uses a rear stopper to mechanically trim the travel end within a 290-300mm window, whereas the adjustable air cushion uses needle screws to tune end-of-stroke deceleration speed. Neither holds the load; the cushion only slows the piston, and the stopper just sets the physical end point.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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