Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X25-30
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X25-30 is a genuine double-acting aluminum-barrel mini cylinder with a Ø25mm bore, a 25mm nominal stroke and a rear adjustable-stroke stopper — trim up to 30mm for a usable window of -5–25mm. Adjustable air cushion (both ends).
- BoreØ25 mm
- Stroke25 mm
- Adjustable-5–25 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable air cushion (both ends)
About the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X25-30
The AirTAC MBLCJ25X25-30 is a compact double-acting aluminum mini cylinder featuring a rear stroke adjuster and a tunable air cushion at both ends. It delivers 245 N of push force and 206 N of pull force at 0.5 MPa. The rear adjuster allows you to trim up to 30 mm of travel, creating a usable end-position window from 0 to 25 mm for precise short-stroke tasks. Unlike the base MBLJ which relies on a fixed rubber bumper, the screw-tunable cushion here actively decelerates the rod near the stroke ends to absorb kinetic energy and protect the end covers.
This configuration uses a G1/8 port, a Ø10 mm carbon-steel rod with 20 μm hard-chrome plating, and a PT thread form. Because this specific SKU lacks the -S magnet code, it cannot accept a CMSG, DMSG, or EMSG position sensor. The riveted rolling-packed barrel and heterogeneous two-way grease-retaining piston seal maintain consistent lubrication, while the overall length equals A + 2 x stroke + adjust. The rear stopper sets your travel end-point but does not mechanically hold the load, and the cushion only decelerates—neither acts as a lock.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X25-30 Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X25-30 |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø25 mm |
| Nominal stroke | 25 mm |
| Adjustable window | -5–25 mm (trim 30 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 MBLCJ25X25-30
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 25 | Bore size in mm. |
| ×25 | Nominal stroke length in mm. |
| -30 | 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 MBLCJ25X25-30 Is Used
PCB Depaneling Saw Feed
Uses the 0-25 mm adjustable window to set the exact cutting depth of a depaneling saw blade, while the tunable cushion absorbs kinetic energy at the stroke end to protect the saw mechanism.
Label Applicator Tamp
Provides 245 N of push force at 0.5 MPa to tamp labels onto rigid packaging, using the rear stopper to dial in the precise 15 mm tamp height without bottoming out the cylinder.
Small Part Ejection Stop
Acts as a hard mechanical stop for small electronic components moving down a conveyor, utilizing the 30 mm adjuster to tune the ejection position while the air cushion softens the rod impact.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X25-30 the Right Cylinder?
Choose this 25 mm bore if you need 245 N of push force at 0.5 MPa. If your task requires less force, step down to the 20 mm bore which provides 157 N push at 0.5 MPa. If you need to move heavier loads, step up to the 32 mm bore which yields 402 N push at 0.5 MPa. Select the MBLCJ over the MBLJ when your cycle speeds demand tunable end-cover protection rather than a fixed bumper, or choose the MBLC if you prefer a fixed stroke without the rear adjuster. Remember that the rear adjuster is a travel stop, not a lock, and the air cushion only decelerates the load. If your process requires the rod to hold position without live air, you must add an external locking mechanism.
For an exact replacement, match the 25 mm bore, 25 mm stroke, 30 mm adjustable code, G1/8 port, PT thread, Basic/FA/LB mounting, and the absence of a magnet. Mounting is limited to Basic, FA (flange), or LB (foot) as there is no back-cover or SDB pivot option on the MBLCJ series. Because this stroke is only 25 mm, side-load risk on the Ø10 mm rod is minimal, but an external guide is still recommended for any lateral forces.
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 MBLCJ25X25-30 FAQ
At 0.5 MPa, the push force is 245 N and the pull force is 206 N. At 0.7 MPa, the push force is 343 N. The maximum theoretical force is 50 kgf at 1.0 MPa.
This specific SKU lacks the -S magnet code, so it cannot accept a CMSG, DMSG, or EMSG position sensor. The 30 mm rear adjuster is a travel stop that sets the end position within a 0-25 mm window, but it does not lock or hold the load. The adjustable air cushion only decelerates the rod near the stroke ends.
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