Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X300-100
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X300-100 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 100mm for a usable window of 200–300mm. Adjustable air cushion (both ends).
- BoreØ25 mm
- Stroke300 mm
- Adjustable200–300 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable air cushion (both ends)
About the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X300-100
The AirTAC MBLCJ25X300-100 is a compact double-acting mini cylinder featuring a rear stroke adjuster and tunable air cushions at both ends. The adjustment code allows you to trim up to 100 mm of travel at the rear, creating a usable stroke window of 200 to 300 mm. Driven by a 25 mm bore, it provides 245 N of push force at 0.5 MPa, making it well-suited for long-reach positioning tasks that require precise end-of-travel stopping.
This model uses a G1/8 port and a Ø10 mm hard-chrome plated carbon steel rod with an M10x1.25 end thread. The riveted aluminum barrel keeps the body light for tight spaces, while the adjustable air cushion lets you screw-tune the deceleration to absorb kinetic energy, protecting the end covers during fast, long moves. Note that because this SKU lacks the -S magnet code, it cannot support CMSG, DMSG, or EMSG position sensors. Additionally, the 300 mm stroke reaches the maximum standard limit for this bore size, so an external guide is recommended to prevent rod bending under side loads.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X300-100 Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X300-100 |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø25 mm |
| Nominal stroke | 300 mm |
| Adjustable window | 200–300 mm (trim 100 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 MBLCJ25X300-100
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 25 | Bore size in mm. |
| ×300 | Nominal stroke length in mm. |
| -100 | 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 MBLCJ25X300-100 Is Used
Textile Loom Let-Off
Regulates yarn tensioning arms across a 200-300 mm travel window, using the tunable cushion to softly decelerate the 245 N push force without shocking the fiber.
Packaging Flap Folder
Extends to fold heavy corrugated carton flaps on a filling line, relying on the 300 mm reach and rear stroke stopper to accommodate varying box sizes.
PCB Edge Pin Loader
Moves bare circuit boards into a testing fixture, benefiting from the 30-800 mm/s speed range and adjustable air cushion to prevent impact damage at the end of the 300 mm extension.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X300-100 the Right Cylinder?
Stepping down to a 20 mm bore yields 157 N of push force at 0.5 MPa, whereas moving up to a 32 mm bore provides 402 N, giving you clear options to scale force. Choose this MBLCJ variant over the MBLJ when you need tunable end-of-stroke deceleration instead of a fixed rubber bumper, or over the MBLC when your application requires trimming the end position. Remember that the rear stopper sets the travel end and the cushion only decelerates; neither component locks the load, so external holding mechanisms are required for dead-stop positioning. Mounting is limited to Basic, FA, or LB styles, as no back-cover or SDB pivot options exist. The exact replacement match requires a 25 mm bore, 300 mm stroke, 100 mm adjust code, G1/8 PT port, and 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 MBLCJ25X300-100 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 force increases to 343 N, with a theoretical maximum of 50 kgf at 1.0 MPa. The 100 mm rear adjuster allows you to set the usable stroke anywhere between 200 mm and 300 mm.
Because this specific SKU lacks the -S suffix, it has no built-in magnet and cannot be fitted with CMSG, DMSG, or EMSG position switches. Furthermore, the rear adjuster acts strictly as a travel stop to set the end position, and the adjustable air cushion only regulates deceleration; neither feature mechanically locks or holds the load in place.
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Standard models usually ship in 3-4 days.
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