Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X175-40
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X175-40 is a genuine double-acting aluminum-barrel mini cylinder with a Ø25mm bore, a 175mm nominal stroke and a rear adjustable-stroke stopper — trim up to 40mm for a usable window of 135–175mm. Adjustable air cushion (both ends).
- BoreØ25 mm
- Stroke175 mm
- Adjustable135–175 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable air cushion (both ends)
About the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X175-40
The AirTAC MBLCJ25X175-40 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 stopper allows you to trim up to 40 mm of travel, creating a usable stroke window of 135 to 175 mm for exact end-positioning. Unlike the base MBLJ which relies on a fixed rubber bumper, this model uses screw-tunable deceleration to absorb kinetic energy, protecting the end covers during faster or heavier moves.
This 25 mm bore unit uses a G1/8 port and a Ø10 mm carbon-steel rod with 20 µm hard-chrome plating. The riveted rolling-packed barrel and grease-retaining piston seal ensure stable friction in tight spaces. Note that this specific SKU lacks the -S magnet option, meaning it cannot accept a CMSG, DMSG, or EMSG position sensor. The overall length equals A plus twice the stroke plus the 40 mm adjuster, so plan your mounting envelope accordingly.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X175-40 Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X175-40 |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø25 mm |
| Nominal stroke | 175 mm |
| Adjustable window | 135–175 mm (trim 40 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 MBLCJ25X175-40
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 25 | Bore size in mm. |
| ×175 | Nominal stroke length in mm. |
| -40 | 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 MBLCJ25X175-40 Is Used
PCB Router Z-Axis Dive
Dialing in the 135-175 mm plunge depth for a spindle router. The tunable cushion prevents end-cover shock at the bottom of the rapid 245 N dive.
Carton Flap Folder Stop
Acting as an adjustable travel stop for varying box sizes on a packaging line. The 40 mm rear trim sets the exact fold angle without swapping hardware.
Textile Tensioning Arm
Maintaining web tension with a 206 N pull force. The screw-tunable deceleration softens the rod's retraction stop to protect delicate fabric threads.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X175-40 the Right Cylinder?
When sizing this cylinder, consider stepping down to the 20 mm bore if your load requires less than 157 N of push force at 0.5 MPa, or stepping up to the 32 mm bore if you need 402 N to handle heavier masses. Choose this MBLCJ over the MBLJ when your cycle speed demands tunable end-of-stroke deceleration rather than a fixed bumper, or over the MBLC if you need that rear travel-stop to dial in the exact 135-175 mm window. Remember that the rear adjuster is a travel stop, not a mechanical lock, and the air cushion only decelerates; neither will hold a load in place without live air pressure.
Mounting is limited to Basic, FA (flange), or LB (foot) options; there is no SDB pivot or back-cover configuration available for this body. For a direct replacement, match the 25 mm bore, 175 mm stroke, 40 mm adjust code, G1/8 PT thread, and confirm no magnet is fitted. Because the stroke is 175 mm on a small Ø10 mm rod, external guide rails are recommended to prevent side-load rod bending.
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 MBLCJ25X175-40 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. The maximum theoretical force is 50 kgf at 1.0 MPa, with a safe operating pressure range of 0.15 to 1.0 MPa.
No. This specific SKU does not include the -S code, so it lacks a built-in magnet in the piston. You cannot mount an AirTAC CMSG, DMSG, or EMSG sensor switch to it. If position detection is required, you must select the MBLCJ25X175-40S variant instead.
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