Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X40-10
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X40-10 is a genuine double-acting aluminum-barrel mini cylinder with a Ø25mm bore, a 40mm nominal stroke and a rear adjustable-stroke stopper — trim up to 10mm for a usable window of 30–40mm. Adjustable air cushion (both ends).
- BoreØ25 mm
- Stroke40 mm
- Adjustable30–40 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable air cushion (both ends)
About the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X40-10
The AirTAC MBLCJ25X40-10 is a compact double-acting mini cylinder featuring a rear stroke adjuster and screw-tunable air cushions at both ends. It delivers 245 N push and 206 N pull force at 0.5 MPa. The rear stopper lets you trim up to 10 mm of travel, creating a usable stroke window of 30 to 40 mm for precise end-positioning.
Unlike the base MBLJ which relies on a fixed rubber bumper, this model uses adjustable end-of-stroke cushioning to decelerate heavier loads smoothly and protect the end covers. The riveted aluminum barrel and 20 µm hard-chrome plated carbon-steel rod provide durable service in tight spaces. This specific SKU lacks a built-in magnet, so it cannot accept CMSG, DMSG, or EMSG position sensors.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X40-10 Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X40-10 |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø25 mm |
| Nominal stroke | 40 mm |
| Adjustable window | 30–40 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 MBLCJ25X40-10
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 25 | Bore size in mm. |
| ×40 | 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 MBLCJ25X40-10 Is Used
PCB Router Z-Axis
Drives the vertical plunge of a spindle routing populated boards, using the 30-40 mm usable window to dial in the exact cutting depth and the air cushion to halt the plunge without jarring the delicate fiberglass.
Dispenser Valve Tapping
Actuates a pneumatic shot dispenser for conductive epoxy, relying on the 245 N push force to open the valve and the adjustable stopper to finely tune the dispense stroke for consistent bead size.
Small Parts Ejector
Pushes stamped metal terminals out of a progressive die fixture, using the 40 mm stroke and cushioned ends to prevent the lightweight parts from launching uncontrollably during ejection.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X40-10 the Right Cylinder?
If you need less force, stepping down to the 20 mm bore yields 157 N push at 0.5 MPa, whereas moving up to the 32 mm bore provides 402 N push. Choose the MBLCJ over the MBLJ when your application requires tuned end-deceleration rather than a fixed bumper, or over the MBLC if you need that rear travel stopper to trim the 40 mm stroke down to 30 mm. Remember that the adjuster is a travel stop and the cushion only decelerates; neither holds a load pneumatically, so external locking is required for position holding.
Mounting is limited to Basic, FA flange, or LB foot styles, as there is no SDB pivot or back-cover option on this body. The overall length is A + 2 x stroke + adjust. To match this replacement exactly, confirm the 25 mm bore, 40 mm stroke, 10 mm adjust code, G1/8 port, PT thread, and the absence of the -S 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 MBLCJ25X40-10 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 is 343 N. The maximum theoretical force is 50 kgf at 1.0 MPa.
No, this specific SKU does not have the -S code, meaning no internal magnet is fitted. It cannot trigger AirTAC CMSG reed or DMSG/EMSG electronic sensors. You would need the MBLCJ25X40-10S variant for position detection.
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