Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X350-75S
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X350-75S is a genuine double-acting aluminum-barrel mini cylinder with a Ø40mm bore, a 350mm nominal stroke and a rear adjustable-stroke stopper — trim up to 75mm for a usable window of 275–350mm. Adjustable air cushion (both ends).
- BoreØ40 mm
- Stroke350 mm
- Adjustable275–350 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable air cushion (both ends)
About the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X350-75S
The AirTAC MBLCJ40X350-75S is a compact double-acting aluminum mini cylinder featuring a rear stroke adjuster and an adjustable air cushion at both ends. It delivers 628 N of push force and 528 N of pull force at 0.5 MPa, making it well-suited for moving heavier jigs over a 350 mm travel. The rear adjuster trims up to 75 mm of travel, giving you a usable stroke window of 275 to 350 mm to dial in exact end positions.
Unlike the fixed rubber bumper found on the MBLJ series, the screw-tunable air cushions on this unit allow you to regulate end-of-stroke deceleration, absorbing kinetic energy to protect the end covers during fast cycles. The 16 mm carbon-steel rod features 20 μm hard-chrome plating to resist wear, while the heterogeneous two-way grease-retaining piston seal maintains lubrication. The built-in magnet (-S) enables position detection with AirTAC CMSG reed or DMSG/EMSG electronic sensors.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X350-75S Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X350-75S |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø40 mm |
| Nominal stroke | 350 mm |
| Adjustable window | 275–350 mm (trim 75 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 MBLCJ40X350-75S
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 40 | Bore size in mm. |
| ×350 | 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 MBLCJ40X350-75S Is Used
Injection Mold Extraction
Utilizes the 628 N push force and 350 mm travel to extract deep-cavity plastic parts from injection molds, using the tunable air cushion to softly catch the heavy mold core at full extension.
Print Registration Guide
Adjusts the registration pins on a wide-format flexographic printing press, using the 275-350 mm stroke window to fine-tune web alignment without repositioning the cylinder body.
Textile Fabric Stretcher
Tensions heavy industrial textile webs on a stenter frame, relying on the 528 N pull force and the cushion needle valves to decelerate the 16 mm rod smoothly before the end cover strikes.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X350-75S the Right Cylinder?
For lower force needs, stepping down to the 32 mm bore yields 402 N of push force at 0.5 MPa, whereas moving up to the 50 mm bore provides 981 N. Choose this MBLCJ model over the MBLJ when your load requires tunable deceleration rather than a fixed bumper stop, or over the MBLC if you need the 75 mm rear travel adjuster to fine-tune the end position. Remember that the rear adjuster is a travel stop, not a lock; it sets the end position but does not hold the load. Because the 350 mm stroke is long relative to the 16 mm rod, use an external guide to prevent side-load bending.
Mounting is limited to Basic, FA flange, or LB foot options; this SKU has no SDB pivot or back-cover option, and the overall length increases by the 75 mm adjustment. To match this replacement exactly, confirm the 40 mm bore, 350 mm stroke, 75 mm adjust code, G1/4 port, PT thread, and 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 MBLCJ40X350-75S FAQ
At 0.5 MPa, this 40 mm bore cylinder provides 628 N of push force and 528 N of pull force. At 0.7 MPa, the push force increases to 880 N. The maximum theoretical force is 128 kgf at 1.0 MPa.
The rear stroke adjuster is a mechanical travel stop that lets you trim the usable stroke window down to 275 mm from the 350 mm nominal length. The adjustable air cushion is a separate needle valve that tunes end-of-stroke deceleration to protect the end covers. Neither the cushion nor the adjuster acts as a lock; the cylinder cannot hold position without live air pressure.
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Standard models usually ship in 3-4 days.
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