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JMB series

JMB series

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JMB series

Product catalog summary

Overview

This document details the JMB Series Air Cylinders, a line of double-acting, single-rod pneumatic cylinders with bore sizes from 32 mm to 100 mm. The JMB series improves upon the previous MB series by offering significant weight reduction, compact design, reduced air consumption, and enhanced mounting flexibility.

1. Product Features and Improvements

Weight Reduction: Up to 49% lighter than MB series, e.g., Ø 50 bore weight reduced from 1.56 kg to 1.00 kg at 100 mm stroke.
Compact Dimensions: Width reduced by up to 20%, height by up to 16%, and overall length shortened by minimizing tie-rod protrusion.
Air Consumption Savings: Up to 29% less air consumption due to optimized bore sizes, including new intermediary bore sizes like Ø 45 mm for efficient output.
Mounting Options: Added both ends tapped mounting, axial foot bracket, rod flange, and head flange options; some restrictions apply based on bore size.
Noise Reduction: Built-in rubber bumper reduces metal noise; non-adjustable air cushion simplifies setup and maintenance.

2. Specifications

Action: Double acting, single rod.
Fluid: Air.
Operating Pressure: Max 0.7 MPa, proof pressure 1.0 MPa, minimum 0.05 MPa.
Temperature Range: 5 to 60 °C.
Piston Speed: 50 to 500 mm/s.
Cushion: Non-adjustable air cushion with rubber bumper.
Port Sizes: Rc, NPT, G thread options (1/8, 1/4, 3/8 inch).
Stroke Lengths: Standard strokes from 25 mm up to 500 mm depending on bore size.

3. Performance Data

Theoretical Output: Calculated as pressure × piston area; detailed values per bore size and pressure provided.
Air Consumption: Measured in liters (ANR) at 0.5 MPa and 50% load factor; intermediary bore sizes reduce consumption.
Load Capacity: Example shows Ø 45 bore can replace Ø 50 for moving 37 kg workpiece with less air consumption.
Allowable Lateral Load: Graphs illustrate lateral load limits at rod end for various bore sizes and speeds to prevent damage.

4. Dimensions and Weight Comparison

Comprehensive dimensional data for bore sizes 32 mm to 100 mm, including width, height, length, and mounting hole specs.
Weight comparisons show significant reductions between MB and JMB series for both basic and flange-mounted cylinders.
Mounting brackets specified with zinc chromating surface treatment for steel parts.

5. Mounting and Accessories

Available mounting brackets: foot bracket, flange, single and double knuckle joints.
Rod end brackets shipped but not assembled; options include single and double knuckle joints.
Auto switch mounting options detailed with compatible switch models (D-M9, M9V, M9W, M9WV, M9A, M9AV), mounting positions, minimum stroke lengths, and bracket part numbers.
Special instructions for stainless steel mounting screws (BBA1 kit) recommended for D-M9A(V) models to prevent corrosion.

6. Electrical Connection and Load Considerations

Connection diagrams for 2-wire and 3-wire auto switches with NPN and PNP outputs included.
Guidance on AND (series) and OR (parallel) connections, highlighting risks such as malfunction and indicator light dimming.
Minimum load voltage of 20 V required; leakage current and internal voltage drops can affect performance.
Parallel connection of two auto switches discouraged to avoid malfunction.

7. Mounting Precautions and Mechanical Considerations

Allowable lateral load limits specified to prevent seal damage, galling, and bearing friction.
Emphasis on aligning piston rod center with workpiece to avoid off-center loads; use of floating joints recommended.
Tightening torque values provided per bore size for mounting brackets.
Retightening tie-rods advised when replacing mounting brackets.
Warnings against simultaneous operation of multiple cylinders without speed control; use high-rigidity guides if unavoidable.
System configuration may affect achievable cylinder speed.

8. Safety Instructions and Compliance

Safety labels defined (Caution, Warning, Danger) with associated risk levels.
Product intended for manufacturing industries; consultation required for other applications.
Not certified for legal metrology; cannot be used for official measurement or certification.
Limited warranty: 1 year in service or 1.5 years after delivery; excludes vacuum pads.
Prohibited use in weapons manufacturing; compliance with export control laws required.
Warnings on compatibility responsibility, trained personnel operation, and safety confirmation before servicing.
Special considerations for extreme environments, safety-critical applications, and interlock circuits.

9. Revision History and Contact Information

Document revisions include updates to lateral load graphs, bore sizes, port thread types, mounting bracket types, and mounting options.
Comprehensive contact details for SMC offices across Europe provided, including phone numbers, websites, and emails for customer support.

Critical Information Highlights

Strict adherence to auto switch mounting positions and heights is essential for reliable detection.
Use recommended stainless steel screws for certain auto switch models to prevent corrosion and ensure secure mounting.
Observe allowable lateral load limits to avoid mechanical damage and premature wear.
Follow electrical connection guidelines carefully to prevent malfunction and ensure proper load voltage.
Only trained personnel should perform installation, operation, and maintenance to ensure safety.
Review compatibility and safety requirements thoroughly before application, especially in non-standard or safety-critical environments.

Catalog excerpts

Intermediary Bore Sizes ∗1 Air saving Space saving ∗1 Same external dimensions Same external dimensions Same external dimensions Same external dimensions New A both ends tapped mounting option has been added. The overall length has been shortened by reducing the amount of tie-rod protrusion from the body end surface. Both ends tapped Overall length shortened 100 mm stroke JMB Ø 50 Both ends tapped 1.56 kg a 1.00 kg (Compared with the existing MB series model, Ø 50, 100 mm str

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Basic Both ends tapped Air consumption can be reduced by optimal size selection. i l ti Bore size [mm] Air consumption L (ANR) Conditions/Supply pressure: 0.5 MPa Load factor: 50 %, At 100 mm stroke 18 % reduction 22 % reduction 29 % reduction 27 % reduction Example In order to move a workpiece with a weight of 37 kg, a bore size of Ø 43 or more is required. Previously, a Ø 50 bore size would have been the closest option since the next smallest size, the Ø 40, has insufficient output. However, with the newly released bore size of Ø 45, sufficient output can be obtained while also saving air due...

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Lightweight and compact ˾ Weight comparison between cylinders with a bracket Flange MB Weight comparison Weight: Max. 49 % reduction (When mounted on the cylinder, 100 mm stroke) [kg] MB 0.95 1.28 2.01 2.62 4.7 7.79 Width: Max. 20 % reduction, Height: 16 % reduction Bore size Ø 32 Ø 40 Ø 50 Ø 63 Ø 80 Ø 100 FZ2 FZ1 Dimension comparison (When mounted on the cylinder) Foot bracket Weight: Max. 35 % reduction Bore size [mm] Ø 32 Ø 40 Ø 50 Ø 63 Ø 80 Ø 100 Weight comparison (When mounted on the cylinder, 100 mm stroke) [kg] Dimension comparison Height: 11 % reduction (When mounted on the cylinder)...

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Air Cylinder Double Acting, Single Rod With auto switch With auto switch (Built-in magnet) Number of auto switches ∗ Not available without a magnet Basic Both ends tapped∗1 Axial foot bracket Rod ﬂange Head ﬂange Auto switch — ∗ “L,” “F,” and “G” cannot be selected for bore sizes Ø 45, Ø 56, Ø 67, and Ø 85. ∗1 In order to mount a foot bracket or ﬂange on the both ends tapped type, it must be ordered separately. Refer to “Mounting Brackets/Part Nos.” on page 5 for order numbers. Without bracket Single knuckle joint Double knuckle joint ∗ A knuckle joint pin is not provided with the single knuckle...

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Air Cylinder Double Acting, Single Rod Speciﬁcations Bore size [mm] Action Fluid Proof pressure Max. operating pressure Min. operating pressure Ambient and ﬂuid temperatures Lubrication Piston speed∗1 Stroke length tolerance Cushion Port size (Rc, NPT, G) Mounting Double acting, Single rod Air 1.0 MPa 0.7 MPa∗2 0.05 MPa 5 to 60 °C Not required (Non-lube) 50 to 500 mm/s∗2 +2.0 0 Non-adjustable air cushion + rubber bumper 1/8 1/4 Basic ∗1 Depending on the system conﬁguration selected, the speciﬁed speed may not be satisﬁed. ∗2 Max. operating pressure and piston speed are different from those of...

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JMB Series Mounting Brackets/Part Nos. Mounting bracket Single knuckle joint Double knuckle joint 1 foot bracket, 2 hexagon nuts, and 2 ﬂat washers 1 ﬂange, 4 hexagon nuts, JMB-F100 and 4 ﬂat washers I-10M 1 single knuckle joint 1 double knuckle joint, 1 pin, Y-10M 2 split pins, and 2 ﬂat washers JMB-L100 ∗1 Order two foot brackets per cylinder. ∗2 An “A” is sufﬁxed to the end of the part numbers of foot brackets and ﬂanges to be mounted on the both ends tapped type. Ordering example) Bore size Ø 32 · Foot bracket JMB-L032A Included parts: 1 foot bracket and 2 hexagon socket head cap screws ·...

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Air Cylinder Double Acting, Single Rod Dimensions Basic: JMDBB Width across ﬂats KA Both ends tapped: JMDBA 2x4xJ Bore size

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Axial foot bracket: JMDBL FN When mounted on the both ends tapped type (A) 4 x Ø FD Head ﬂange: JMDBG FN When mounted on the both ends tapped type

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Auto Switch Mounting Auto Switch Proper Mounting Position (Detection at stroke end) and Mounting Height ≈ Hs Auto Switch Proper Mounting Position Auto Switch Mounting Height Auto switch model Bore size Bore size Auto switch model ∗ Adjust the auto switch after conﬁrming the operating conditions in the actual setting. Min. Stroke for Auto Switch Mounting n: Number of auto switches [mm] Ø 32, Ø 40, Ø 45, Ø 50, Ø 56, Auto switch model Number of auto switches Ø 63, Ø 67, Ø 80, Ø 85, Ø 100 Bore size 2 (Different surfaces, Same surface), 1 2 (Different surfaces, Same surface), 1 2 (Different surfaces,...

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Prior to Use Auto Switch Connections and Examples Sink Input Speciﬁcations Source Input Speciﬁcations Auto switch Brown Input Auto switch Brown Input Auto switch Brown COM Auto switch Blue Connect according to the applicable PLC input speciﬁcations, as the connection method will vary depending on the PLC input speciﬁcations. Examples of AND (Series) and OR (Parallel) Connections ∗ When using solid state auto switches, ensure the application is set up so the signals for the ﬁrst 50 ms are invalid. Depending on the operating environment, the product may not operate properly. 3-wire AND connection...

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JMB Series Speciﬁc Product Precautions Be sure to read this before handling the products. Refer to the back cover for safety instructions. For actuator and auto switch precautions, refer to the “Handling Precautions for SMC Products” and the “Operation Manual” on the SMC website: https://www.smc.eu Caution 1. Allowable lateral load Lateral load that can apply to the piston rod end is limited. If a cylinder is used with a lateral load over the limit, it may cause air leakage due to abnormal friction of seals, galling of cylinder tubes and pistons, or abnormal friction of the bearing part. The...

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