Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X250-50
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X250-50 is a genuine double-acting aluminum-barrel mini cylinder with a Ø25mm bore, a 250mm nominal stroke and a rear adjustable-stroke stopper — trim up to 50mm for a usable window of 200–250mm. Adjustable air cushion (both ends).
- BoreØ25 mm
- Stroke250 mm
- Adjustable200–250 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable air cushion (both ends)
About the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X250-50
The AirTAC MBLCJ25X250-50 is a compact double-acting aluminum mini cylinder featuring a rear travel stopper that creates a usable 200-250 mm stroke window from the 250 mm nominal length. A screw-tunable air cushion at both ends absorbs kinetic energy to protect the end covers during high-speed cycling. Driven by a Ø10 mm hard-chrome plated carbon-steel rod, it delivers 245 N push and 206 N pull force at 0.5 MPa.
This SKU uses a G1/8 port with default PT tapered threads and omits the built-in magnet, meaning it cannot accept CMSG or DMSG position sensors. The riveted rolling-packed barrel and heterogeneous two-way grease-retaining piston seal maintain tight tolerances. Because the 250 mm stroke is near the 300 mm maximum for this 25 mm bore, the small rod diameter makes it highly susceptible to side-load bending, requiring an external guide rail for heavy loads.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X250-50 Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X250-50 |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø25 mm |
| Nominal stroke | 250 mm |
| Adjustable window | 200–250 mm (trim 50 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 MBLCJ25X250-50
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 25 | Bore size in mm. |
| ×250 | Nominal stroke length in mm. |
| -50 | 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 MBLCJ25X250-50 Is Used
PCB Router Z-Axis
Drives the vertical plunge of a printed circuit board depaneling router, using the 200-250 mm window to dial in cutting depth while the air cushion softens the rapid tool retraction.
Carton Flap Folder
Extends 250 mm to fold major flaps on medium-size packaging cartons, relying on the 245 N push force and cushioned deceleration to prevent smashing the cardboard.
Textile Tension Arm
Actuates a fabric tensioning arm in a textile winding machine, trimming 50 mm at the rear to accommodate different fabric roll diameters without repositioning the cylinder.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X250-50 the Right Cylinder?
Step down to the 20 mm bore (157 N push at 0.5 MPa) for lighter gripping tasks, or step up to the 32 mm bore (402 N push at 0.5 MPa) if your payload requires higher thrust. Choose this MBLCJ over the MBLJ type when your cycle speed demands tunable pneumatic deceleration rather than a fixed rubber bumper. Compared to the MBLC, this version adds rear travel adjustment.
The rear stopper sets the end position, and the cushions only decelerate; neither function mechanically locks or holds the load, so use an external lock for fail-safe positioning. Mounting is limited to Basic, FA flange, or LB foot brackets, as no SDB pivot or back-cover options exist. For exact replacement, match the 25 mm bore, 250 mm stroke, 50 mm adjust code, G1/8 port, PT thread, and confirm no magnet is required.
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 MBLCJ25X250-50 FAQ
At 0.5 MPa, this 25 mm bore cylinder provides 245 N push and 206 N pull force. At 0.7 MPa, the push force increases to 343 N. The maximum theoretical force is 50 kgf at 1.0 MPa.
No, this specific SKU lacks the -S code, meaning no built-in magnet is fitted and it cannot accept AirTAC CMSG, DMSG, or EMSG sensor switches. You must select an MBLCJ model with the -S suffix for electronic position detection.
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