Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X150-20S
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X150-20S is a genuine double-acting aluminum-barrel mini cylinder with a Ø25mm bore, a 150mm nominal stroke and a rear adjustable-stroke stopper — trim up to 20mm for a usable window of 130–150mm. Adjustable air cushion (both ends).
- BoreØ25 mm
- Stroke150 mm
- Adjustable130–150 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable air cushion (both ends)
About the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X150-20S
The AirTAC MBLCJ25X150-20S 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 at 0.5 MPa. The -20S code provides a 20 mm rear trim, creating a usable end-position window of 130 to 150 mm. This makes it highly effective for operations requiring exact endpoint positioning without swapping the entire actuator.
Unlike the fixed rubber bumper found on the base MBLJ, the screw-tunable cushion on this SKU allows you to dial in end-of-stroke deceleration, absorbing kinetic energy to protect the end covers during faster moves. The riveted rolling-packed barrel and heterogeneous two-way grease-retaining piston seal help maintain consistent lubrication over long cycles. Fitted with a built-in magnet (-S), it supports AirTAC CMSG reed and DMSG or EMSG electronic sensor switches for precise rod position detection.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X150-20S Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X150-20S |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø25 mm |
| Nominal stroke | 150 mm |
| Adjustable window | 130–150 mm (trim 20 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 MBLCJ25X150-20S
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 25 | Bore size in mm. |
| ×150 | Nominal stroke length in mm. |
| -20 | 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 MBLCJ25X150-20S Is Used
PCB Depaneling Router
Provides 245 N of push force to plunge a routing spindle into assembled PCB panels, using the 130-150 mm window to precisely set the cutting depth limit.
Textile Tensioning Arm
Adjusts fabric tension dynamically, using the tunable air cushion to softly catch the arm at the end of its 150 mm travel, preventing yarn snags.
Small Parts Ejector
Pushes stamped metal parts from a die at high speed, relying on the DMSG electronic sensor to verify ejection and the cushion to protect the cover.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X150-20S the Right Cylinder?
If you need to step the force down, the neighbouring 20 mm bore offers 157 N of push at 0.5 MPa; if you need to step up, the 32 mm bore provides 402 N. Choose this MBLCJ over the MBLJ when your application speed requires tunable pneumatic cushioning rather than a fixed bumper, or over the MBLC when you need the 20 mm rear travel adjustment to fine-tune the stroke end. Remember that the rear stopper sets the travel limit and the cushion only decelerates; neither component locks the load, so external holding mechanisms are required for strict position holding. Mounting is limited to Basic, FA flange, or LB foot brackets, as this series omits the SDB pivot and back-cover options. The overall length extends by the stroke and adjustment distance. To match this actuator exactly for replacement, verify the 25 mm bore, 150 mm stroke, 20 mm adjust code, G1/8 port, PT thread, and -S magnet. At 150 mm stroke, the 10 mm piston rod is susceptible to bending under lateral loads, so an external guide rail should be used to prevent side-load damage.
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 MBLCJ25X150-20S 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 25 mm bore caps at a 300 mm maximum standard stroke, so the 150 mm stroke is well within limits.
The rear stroke adjuster is a mechanical travel stop that lets you trim the end position within a 130 to 150 mm window. The adjustable air cushion is a separate screw-tunable valve that controls pneumatic deceleration at the stroke ends. Neither the cushion nor the adjuster acts as a lock; they do not hold a load in place without live air pressure.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
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