Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X175-30
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X175-30 is a genuine double-acting aluminum-barrel mini cylinder with a Ø40mm bore, a 175mm nominal stroke and a rear adjustable-stroke stopper — trim up to 30mm for a usable window of 145–175mm. Adjustable air cushion (both ends).
- BoreØ40 mm
- Stroke175 mm
- Adjustable145–175 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 MBLCJ40X175-30
The AirTAC MBLCJ40X175-30 is a compact double-acting mini cylinder featuring a 40mm bore and a 175mm stroke. A rear mechanical adjuster allows you to trim up to 30mm of travel, creating a usable end-position window of 145 to 175mm. Driven by a Ø16mm hard-chrome plated carbon-steel rod, it delivers 628N of push force and 528N of pull force at 0.5 MPa. This specific SKU uses PT tapered port threads and lacks a built-in magnet, meaning it cannot support CMSG, DMSG, or EMSG position sensors.
Unlike the fixed rubber bumper found on the base MBLJ series, this model features a screw-tunable adjustable air cushion at both ends. This allows you to dial in end-of-stroke deceleration for heavier moving loads, protecting the end covers from impact damage. The cylinder body utilizes a riveted rolling-packed aluminum barrel paired with a heterogeneous two-way grease-retaining piston seal, ensuring smooth operation at speeds between 30 and 800 mm/s. Note that the rear adjuster acts strictly as a travel stop and does not lock the load in place.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X175-30 Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X175-30 |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø40 mm |
| Nominal stroke | 175 mm |
| Adjustable window | 145–175 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 MBLCJ40X175-30
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 40 | Bore size in mm. |
| ×175 | 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 MBLCJ40X175-30 Is Used
PCB Router Z-Axis
Lifts and lowers a spindle router head for PCB depaneling. The 628N push force handles the z-axis mass, while the air cushion prevents hard mechanical stops from jarring the precision spindle bearings.
Packaging Tuck Arm
Actuates a carton end-flap tucking mechanism. The 145-175mm adjustable window lets mechanics dial in the exact tuck depth on the machine without loosening the physical LB foot mount.
Textile Loom Beam Shift
Transfers heavy warp beams laterally across a loom frame. The 528N pull force retracts the beam, and the dual end cushions absorb the kinetic energy of the heavy textile roll at high cycle speeds.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X175-30 the Right Cylinder?
Select this 40mm bore when your application requires the 628N push force at 0.5 MPa but demands controlled deceleration. If you need less force, stepping down to the 32mm bore yields 402N of push force. If your payload requires more power, stepping up to the 50mm bore provides 981N. This model is ideal over the MBLJ because the tunable air cushion handles faster cycling masses better than a fixed bumper. Compared to the MBLC, you gain the 145-175mm rear stroke adjustment window to fine-tune the end position without moving the physical mount.
Because this SKU lacks the -S magnet option, it cannot accommodate electronic or reed sensors for position feedback. Mounting is limited to Basic, FA flange, or LB foot styles; there is no back-cover or SDB pivot option available. The overall length calculates to A + 2 x 175mm + 30mm. At a 175mm stroke, the 16mm rod is susceptible to side-loading and bending under lateral stress; always use an external guide rail to support the payload. For a direct replacement, match the 40mm bore, 175mm stroke, 30mm adjust code, G1/4 port, PT thread, and non-magnet configuration.
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 MBLCJ40X175-30 FAQ
At 0.5 MPa, this 40mm bore cylinder outputs 628N of push force and 528N of pull force. At 0.7 MPa, the push force increases to 880N. The maximum theoretical force is 128 kgf at the 1.0 MPa operating pressure limit. The functional operating pressure range is 0.15 to 1.0 MPa.
No. The 30mm rear adjuster is a travel stop that mechanically sets the end-of-stroke position within a 145-175mm window; it is not a locking brake. Similarly, the adjustable air cushion only regulates deceleration speed and cannot hold a load. If you need true position holding without constant air pressure, you must use an external pneumatic lock or mechanical detent.
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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.
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Most inquiries answered within 7-8 hours.
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