Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X250-75
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X250-75 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 75mm for a usable window of 175–250mm. Adjustable air cushion (both ends).
- BoreØ25 mm
- Stroke250 mm
- Adjustable175–250 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable air cushion (both ends)
About the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X250-75
The AirTAC MBLCJ25X250-75 is a compact double-acting aluminum mini cylinder featuring a rear stroke adjuster and tunable air cushions at both ends. It delivers 245 N push and 206 N pull force at 0.5 MPa. The 75 mm rear adjustment yields a usable 175-250 mm stroke window, ideal for varying machine formats. A G1/8 port and Ø10 mm hard-chrome rod handle standard pneumatic supply.
This SKU lacks the -S magnet option, meaning no CMSG, DMSG, or EMSG electronic position sensor can be fitted. The riveted rolling-packed barrel and grease-retaining piston seal ensure long service life. The adjustable air cushion decelerates heavier loads at stroke ends, while the rear stopper sets the travel limit without locking the load in place.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X250-75 Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X250-75 |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø25 mm |
| Nominal stroke | 250 mm |
| Adjustable window | 175–250 mm (trim 75 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 MBLCJ25X250-75
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 25 | Bore size in mm. |
| ×250 | Nominal stroke length in mm. |
| -75 | 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 MBLCJ25X250-75 Is Used
PCB Router Z-Axis
Handles spindle plunge and retract across a 175-250 mm window, using the dual air cushions to soften end-of-stroke impact and protect fragile spindle bearings.
Carton Flap Folder
Extends 250 mm to fold major flaps on packaging lines, relying on the 245 N push force to overcome cardboard stiffness while the rear stopper sets exact flap depth.
Textile Beam Loom
Feeds warp yarn tensioning arms where the 75 mm stroke adjustment accommodates varying beam diameters, with the aluminum body fitting tight loom frames.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X250-75 the Right Cylinder?
For lower force needs, the 20 mm bore offers 157 N push at 0.5 MPa; for higher loads, the 32 mm bore provides 402 N. Choose the MBLCJ over the MBLJ when your application requires end-cover protection via tunable air cushioning rather than a fixed rubber bumper. Choose the MBLC for a fixed stroke without the rear adjuster.
At 250 mm stroke, the 10 mm rod is susceptible to side-load bending; an external guide rail is highly recommended. The rear adjuster is a travel stop, not a lock—rod drift occurs without live air. Mounting is limited to Basic, FA flange, or LB foot (no SDB or back-cover options). Replacement requires exact 25 mm bore, 250 mm stroke, 75 mm adjust, G1/8 port, PT thread, 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 MBLCJ25X250-75 FAQ
At 0.5 MPa, it provides 245 N push and 206 N pull force. At 0.7 MPa, push increases to 343 N. The maximum theoretical force is 50 kgf at 1.0 MPa.
No. This specific SKU lacks the built-in -S magnet, so it cannot interface with AirTAC CMSG reed or DMSG/EMSG electronic switches. You must select an MBLCJ25X250-75S variant to use position sensors.
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