Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X25-30
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X25-30 is a genuine double-acting aluminum-barrel mini cylinder with a Ø40mm bore, a 25mm nominal stroke and a rear adjustable-stroke stopper — trim up to 30mm for a usable window of -5–25mm. Adjustable air cushion (both ends).
- BoreØ40 mm
- Stroke25 mm
- Adjustable-5–25 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable air cushion (both ends)
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X25-30
The AirTAC MBLCJ40X25-30 is a compact double-acting aluminum mini cylinder featuring a rear stroke adjuster and an adjustable air cushion at both ends. The 30mm adjustment code lets you trim the 25mm stroke, creating a usable 0-25mm end-position window. Driven by a Ø16mm rod through a G1/4 port, it yields 628N push and 528N pull at 0.5MPa, making it ideal for medium-force positioning tasks.
Unlike the fixed rubber bumper on an MBLJ, the screw-tunable air cushion on this unit allows precise end-of-stroke deceleration for heavier moving masses, protecting the end covers. The riveted rolling-packed barrel and grease-retaining piston seal minimize friction. Note this specific SKU lacks a built-in magnet, so it cannot accept CMSG, DMSG, or EMSG position sensors.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X25-30 Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X25-30 |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø40 mm |
| Nominal stroke | 25 mm |
| Adjustable window | -5–25 mm (trim 30 mm) |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M12×1.25 |
| 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 500 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 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 MBLCJ40X25-30
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 40 | Bore size in mm. |
| ×25 | Nominal stroke length in mm. |
| -30 | 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 MBLCJ40X25-30 Is Used
CNC Pallet Clamping
Provides 628N of clamping force to secure aluminum workholding pallets onto a machining center sub-plate, using the 0-25mm stroke window to dial in exact contact.
Diverter Arm Stop
Tunes its air cushion to smoothly decelerate a heavy diverter arm on a packaging line, preventing hard impacts that would eventually crack the aluminum end cover.
Print Head Registration
Positions a flexographic print head with 528N pull force, relying on the rear stopper to set a precise 15mm registration distance without drift.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X25-30 the Right Cylinder?
If you need less force, the Ø32 bore provides 402N push at 0.5MPa; for heavier loads, the Ø50 bore offers 981N. Choose the MBLCJ over the MBLJ when your moving mass demands tunable end-cushioning rather than a fixed bumper, or over the MBLC when you need that rear travel stopper. Remember the adjuster sets the travel end and the cushion only decelerates; neither holds the load, so use an external locking mechanism for position holding. Mounting is limited to Basic, FA flange, or LB foot (no SDB or back-cover). Replacement match: 40mm bore, 25mm stroke, 30mm adjust, G1/4 port, PT thread, 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 MBLCJ40X25-30 FAQ
At 0.5MPa it provides 628N push and 528N pull. At 0.7MPa push increases to 880N, with a theoretical maximum of 128kgf at 1.0MPa.
The rear adjuster mechanically trims the stroke end-position within a 0-25mm window, acting as a travel stop. The adjustable air cushion uses a screw valve to tune pneumatic deceleration near the end of travel. Neither holds the load.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC Adjustable-Stroke Cylinders
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