EMC SGM Triple-Rod Guided Pneumatic Cylinders
EMC Series SGM pneumatic cylinders are heavy-duty guided actuators built around a triple-rod construction and self-lubricating slide bearings. Instead of relying on the piston rod alone to support attached tooling, the guide assembly helps resist lateral forces, restrict unwanted rotation and maintain the orientation of the end plate throughout the cylinder stroke.
This makes SGM particularly useful for material handling, stopping, lifting, pressing, locating, pushing and fixture applications where a conventional pneumatic cylinder would otherwise need a separate external guide.
The Cylinder Warehouse SGM range covers bore sizes from 12 to 63 mm with a broad selection of strokes. Browse all EMC pneumatic cylinders, compare other guided pneumatic cylinders, or use the bore collections below to narrow the range.
Why Use a Guided Pneumatic Cylinder?
A conventional pneumatic cylinder is designed primarily to generate linear force. Its piston rod should not normally be expected to support substantial side loads, bending moments or tooling that needs precise angular control.
SGM integrates the guidance into the actuator. Two guide rods work alongside the central pneumatic cylinder mechanism and connect to the front tooling plate, creating EMC's triple-rod guided arrangement.
This allows the guide system to carry more of the external mechanical load while the pneumatic cylinder provides the driving force. The result is a more appropriate actuator for equipment where the load does more than simply push directly along the piston-rod centreline.
EMC SGM Technical Specification
| Manufacturer |
EMC |
| Series |
SGM |
| Product Category |
Guided pneumatic cylinders |
| Guidance Design |
Triple-rod guided construction |
| Bearing Type |
Self-lubricating slide bearings |
| Operation |
Double acting |
| Bore Sizes |
12, 16, 20, 25, 32, 40, 50 and 63 mm |
| Published Stroke Range |
5 to 250 mm |
| Position Detection |
Magnetic piston |
| Cushioning |
Rubber cushioning |
| Body |
Anodised aluminium |
| Front Plate |
Steel |
| Guide Rods |
Hard-chrome-plated steel |
| Piston Rod |
Hard-chrome-plated steel |
| Piston |
Aluminium |
| Seal Materials |
NBR / PUR |
| Maximum Working Pressure |
10 bar |
| Published Temperature Range |
-20°C to +80°C with dry air |
| Position Switch |
D series on verified configurations |
Triple-Rod Construction for Side-Load Resistance
The defining feature of SGM is the arrangement of the central pneumatic actuator with two parallel guide rods and a common end plate. EMC describes the range as a heavy-duty triple-rod guided cylinder designed to provide strong resistance to side-load forces.
This is particularly valuable when the tooling attached to the cylinder plate is offset from the centreline, contacts a moving workpiece or experiences lateral forces during the machine cycle.
The guide rods also help prevent the tooling plate from twisting as the pneumatic cylinder extends and retracts.
Self-Lubricating Slide Bearings
SGM uses self-lubricating sliding bearings to support the guide rods. This creates a robust guided actuator suited to industrial machine movements where load support is more important than the extremely low-friction characteristics of a precision ball-bushing guide.
Slide-bearing guided pneumatic cylinders are particularly well suited to stopping, handling, pushing and general fixture applications where side-load resistance and mechanical robustness are required.
EMC SGM Bore Sizes
The SGM platform covers eight bore sizes in the current Cylinder Warehouse range:
SGM Pneumatic Port Sizes
The pneumatic connection increases with actuator size, so the complete EMC manufacturer part number should be checked when replacing an existing SGM.
| Bore |
Verified / Published Port |
| 12 mm |
M5 |
| 16 mm |
M5 |
| 20 mm |
G1/8 |
| 25 mm |
G1/8 |
| 32 mm |
G1/8 |
| 40 mm |
G1/8 |
| 50 mm |
G1/4 |
| 63 mm |
G1/4 |
Side or Bottom Pneumatic Connections
Published EMC SGM product data provides pneumatic connection options from the side or from below, with the unused connection closed using stopper plugs.
This gives machine designers more flexibility when surrounding equipment makes one connection direction difficult to access. It can also simplify replacement work where the existing pneumatic tubing has already been routed to a particular side of the actuator.
Magnetic Piston Position Detection
SGM pneumatic cylinders use a magnetic piston and support compatible D-series cylinder switches on verified configurations.
This allows the control system to confirm the position of the guided actuator without relying on an external mechanical limit switch, which is particularly useful in automated handling, stopping and fixture sequences.
Rubber End Cushioning
The standard SGM range uses rubber cushioning at the ends of the stroke. This helps reduce mechanical impact as the actuator reaches its end positions.
It should not be confused with manually adjustable pneumatic cushioning. Where the moving mass, speed or kinetic energy is particularly high, the complete application should be checked to make sure the actuator and cushioning arrangement are suitable.
Tooling Alignment and Rotational Control
The guided end plate provides far greater rotational stability than connecting tooling directly to a conventional single piston rod.
Published SGM product data quotes a twist tolerance of less than ±0.1° on verified configurations. This makes the range suitable for tooling that needs to return to substantially the same angular orientation on every cycle.
That can be important for component stops, pushers, locating plates, lifting tables, clamps and similar machine mechanisms.
SGM or a Standard Compact Pneumatic Cylinder?
| Actuator Type |
Load Support |
Best Starting Point When... |
| EMC SGM |
Integrated guide rods and slide bearings |
Tooling creates side load, torque or needs controlled orientation |
| EMC SQN |
Conventional piston-rod arrangement |
The main requirement is compact linear pneumatic movement |
| EMC SQ |
Conventional compact actuator |
Additional compact-cylinder stroke is the main requirement |
If the load acts directly in line with the piston rod and does not need external guidance, a simpler compact pneumatic cylinder may be sufficient. SGM becomes particularly valuable when the actuator must also support and control the attached mechanism.
SGM and SMC MGPM Replacement Searches
Published EMC SGM product data states that the principal installation dimensions correspond to the SMC MGPM guided-cylinder format.
This makes EMC SGM particularly relevant when engineers are searching for an alternative around an existing SMC MGPM-style installation. It should not, however, be treated as an automatic replacement purely because the main dimensions are similar.
Check the complete bore, stroke, mounting centres, pneumatic ports, permissible side load, permissible torque, switch arrangement and machine environment before changing manufacturer.
Example: EMC SGM 25/50
SGM 25/50 is a 25 mm bore × 50 mm stroke guided pneumatic cylinder with a G1/8 pneumatic connection.
Published technical data for this version specifies self-lubricating slide bearings, magnetic piston sensing, a permissible lateral force of 131 N and permissible end-plate torque of 3.35 Nm.
Example: EMC SGM 50/50
SGM 50/50 increases the piston diameter to 50 mm while retaining the same guided actuator concept. It uses a G1/4 pneumatic connection and the verified construction includes an anodised aluminium body, steel plate, hard-chrome-plated guide rods and piston rod, aluminium piston and NBR / PUR seals.
The published 50/50 specification gives a permissible lateral force of 245 N and permissible end-plate torque of 10.8 Nm, demonstrating why the load data should be considered as well as the nominal cylinder force when selecting a guided actuator.
Longer SGM Stroke Options
EMC literature documents SGM stroke lengths through to 250 mm, while the current Cylinder Warehouse catalogue includes combinations ranging from very short guided movements through to products such as SGM 32/200 and SGM 63/200.
This allows SGM to be used for more than short fixture movements. The range can also provide guided travel for handling and positioning mechanisms where substantial stroke and lateral stability are needed together.
Replacing an Existing EMC SGM Pneumatic Cylinder
The complete EMC MPN should be the first reference when sourcing an exact replacement. A code such as SGM 32/50 identifies a 32 mm bore × 50 mm stroke guided pneumatic cylinder within the SGM platform.
Do not replace an SGM solely with a normal 32 mm bore pneumatic cylinder. The guide rods, front plate, bearing system and mounting geometry are integral parts of the machine function.
If an exact SGM is unavailable, browse the wider guided pneumatic cylinder range and compare the permitted load, torque, bore, stroke and mounting dimensions before choosing an alternative.
EMC SGM Selection Questions
What makes SGM different from a normal pneumatic cylinder?
SGM incorporates two guide rods, slide bearings and a common tooling plate around the pneumatic actuator. This gives the assembly greater resistance to side loads and rotation than a conventional piston-rod cylinder.
Is EMC SGM a triple-rod guided pneumatic cylinder?
Yes. EMC literature specifically describes SGM as a heavy-duty triple-rod guided pneumatic cylinder with slide bearings.
Can SGM handle lateral loads?
Yes. Side-load resistance is one of the principal reasons for the SGM design. The permissible lateral force depends on bore, stroke and actuator configuration and should be checked against the individual product data.
Does SGM use slide bearings or ball bearings?
The standard SGM range uses self-lubricating slide bearings.
Is EMC SGM magnetic?
Yes. The documented standard range is double acting with magnetic piston positioning.
What bore sizes are available?
The documented standard range covers 12, 16, 20, 25, 32, 40, 50 and 63 mm bore.
What is the maximum working pressure?
EMC specifies a maximum working pressure of 10 bar for the standard SGM range.
Is SGM the same as SMC MGPM?
No. They are products from different manufacturers. Published EMC SGM data states that the main installation dimensions correspond to the SMC MGPM format, making it useful for replacement comparison, but the complete technical specification must still be checked before substitution.
Where can I compare other guided pneumatic cylinders?
Browse the complete guided pneumatic cylinder range or return to EMC pneumatic cylinders for other EMC actuator families.
