Airtac MBLCJ Adjustable Mini Cylinder MBLCJ63X175-30S
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ63X175-30S is a genuine double-acting aluminum-barrel mini cylinder with a Ø63mm 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).
- BoreØ63 mm
- Stroke175 mm
- Adjustable145–175 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM14×1.5
- CushionAdjustable air cushion (both ends)
About the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ63X175-30S
The AirTAC MBLCJ63X175-30S is a compact double-acting aluminum mini cylinder engineered for heavy-duty motion control. It features a rear travel stopper that trims up to 30 mm, creating a precise 145-175 mm usable stroke window. Driven by a Ø16 mm carbon-steel rod, it delivers 1558 N of push force and 1457 N of pull force at 0.5 MPa. This specific 175 mm stroke length is well-suited for moving substantial jigs or lifting heavy pallets in confined machinery.
Unlike the fixed rubber bumper found on the base MBLJ, this model incorporates a screw-tunable adjustable air cushion at both ends to decelerate heavy loads smoothly before impact. The riveted rolling-packed barrel and grease-retaining piston seal ensure long-term lubrication even at speeds up to 800 mm/s. Equipped with a built-in magnet (-S), it supports AirTAC CMSG reed and DMSG or EMSG electronic solid-state sensor switches for exact end-of-stroke detection.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ63X175-30S Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ63X175-30S |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø63 mm |
| Nominal stroke | 175 mm |
| Adjustable window | 145–175 mm (trim 30 mm) |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M14×1.5 |
| 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 (Ø63mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1458 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 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 MBLCJ63X175-30S
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 63 | 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 MBLCJ63X175-30S Is Used
Injection Mold Ejection
Provides the 1558 N push force needed to eject heavy plastic parts from molds, using the 145-175 mm stroke window to time the ejection length perfectly.
Packaging Pallet Diverter
Uses the dual adjustable air cushions to smoothly decelerate the heavy 63 mm rod when diverting loaded pallets on a conveyor without slamming.
Woodworking Press Clamping
Holds warped wood panels under a press, relying on the -S magnet and DMSG sensor to confirm the clamp is fully extended before the hydraulic press cycles.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ63X175-30S the Right Cylinder?
Select this 63 mm bore when your application requires substantial thrust; at 0.7 MPa it pushes 2181 N. If you need less force, step down to the 50 mm bore which pushes 981 N at 0.5 MPa. If you require even greater power, note that 63 mm is the largest available bore in this mini series. Compared to the MBLC (fixed stroke with cushion), this MBLCJ version allows you to dial in the 145-175 mm end position without mechanical shims. Remember that the rear stopper simply sets the travel end and the air cushion only decelerates; neither component locks the load, so external holding mechanisms are required for pneumatic positioning.
When replacing this unit, match the 63 mm bore, 175 mm stroke, and 30 mm adjust code. The fluid port is G1/4 and the rod-end thread is M14x1.5 with a default PT tapered thread form. Mounting is strictly limited to Basic, FA flange, or LB foot styles; the MBLCJ series does not support SDB pivot or back-cover options. Because the overall length equals A + 2 x stroke + adjust, verify your equipment's physical envelope before installation.
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 MBLCJ63X175-30S FAQ
At 0.5 MPa, this 63 mm bore cylinder provides 1558 N of push force and 1457 N of pull force. At 0.7 MPa, the push force increases to 2181 N. The maximum theoretical force is 318 kgf at 1.0 MPa.
The 30 mm adjustment is a rear mechanical stopper that physically limits the rod travel to a 145-175 mm window. The adjustable air cushion is a separate screw-tunable feature that regulates exhaust flow to decelerate the load at the stroke ends. Neither feature locks the load in place.
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