Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X300-10
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X300-10 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 MBLCJ25X300-10
The AirTAC MBLCJ25X300-10 is a compact double-acting aluminum mini cylinder featuring a rear stroke adjuster and an adjustable air cushion at both ends. It delivers 245 N of push force at 0.5 MPa via a G1/8 port and a Ø10 mm hard-chrome plated carbon-steel rod. The 10 mm rear trimmer creates a usable end-position window of 290 to 300 mm, letting you dial in the exact extended endpoint without mechanical shims.
Because this 300 mm travel approaches the maximum standard limit for a Ø25 bore, the adjustable end-of-stroke cushioning is critical for absorbing kinetic energy and protecting the end covers from impact. The riveted rolling-packed barrel and grease-retaining piston seal ensure consistent low-friction operation across the 30 to 800 mm/s speed range. Note that this specific SKU lacks a built-in magnet, meaning it cannot support CMSG, DMSG, or EMSG position sensing.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X300-10 Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X300-10 |
|---|---|
| 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 MBLCJ25X300-10
| 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 MBLCJ25X300-10 Is Used
PCB Edge Conveyor Transfer
Pushes populated PCB panels between conveyor belts over a 300 mm gap, using the 10 mm stroke adjustment to precisely match the receiving station height without mechanical shims.
Textile Yarn Guide Traversal
Traverses a yarn guide across a 290-300 mm winding width, relying on the adjustable air cushions to prevent sudden end-stop jerks that would snap delicate synthetic fibers.
Thin Film Web Splicing
Actuates a splicing head across a packaging machine web, where the 245 N force is sufficient to lay tape smoothly while the tunable cushioning protects the delicate film from tearing at stroke ends.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X300-10 the Right Cylinder?
For lower force needs, stepping down to a Ø20 bore yields 157 N push at 0.5 MPa, whereas upgrading to a Ø32 bore provides 402 N if your payload exceeds the 245 N rating of this Ø25 unit. Choose this MBLCJ model over the MBLJ when your moving mass requires tunable pneumatic deceleration rather than a fixed rubber bumper, or over the MBLC when you need that 10 mm rear stroke adjustment to fine-tune the endpoint.
The rear adjuster acts strictly as a mechanical travel stop and the cushion only decelerates; neither will hold a load in place without continuous air pressure. Mounting is limited to Basic, FA flange, or LB foot styles (no SDB pivot or back-cover options). At 300 mm of travel, the Ø10 rod is highly susceptible to side-loading and bending, so an external guide rail is mandatory for any off-axis load. The exact replacement match is bore 25, stroke 300, adjust 10, port G1/8, PT thread, standard mounting, no magnet.
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 MBLCJ25X300-10 FAQ
At 0.5 MPa, this Ø25 mm bore cylinder provides 245 N of push force and 206 N of pull force. At 0.7 MPa, the push force increases to 343 N, with a theoretical maximum of 50 kgf at 1.0 MPa. The 300 mm stroke on this unit is the maximum standard stroke available for the Ø25 bore size.
No, the 10 mm rear adjuster is a travel stop that sets the end position within a 290-300 mm window; it is not a lock and cannot hold a load without air pressure. The adjustable air cushion only controls deceleration speed. Additionally, because this SKU lacks the -S magnet suffix, it cannot accommodate CMSG, DMSG, or EMSG position sensors.
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