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This is a standard double-acting round cylinder of SMC CG1 series, featuring built-in magnet ring, rubber cushion and basic mounting style. Bore size: 20 mm, stroke: 300 mm. It is applied to linear driving, positioning and clamping of automated equipment.
- Erklärung des Modellcodes
| Codesegment | Beschreibung |
| CDG1 | Series code for SMC standard round cylinders: C = Cylinder, D = With built-in magnet ring, G = Standard type, 1 = Single rod & double acting |
| B | Mounting code: B = Basic type (without mounting accessories), F = Flange type, K = Foot type, T = Trunnion type, usw. |
| N | Cushion code: N = Rubber cushion, A = Adjustable air cushion |
| 20 | Bore size: 20 mm (Standard bores: 20, 25, 32, 40, 50, 63, 80, 100 mm) |
| -300 | Stroke length: 300 mm (Standard stroke: 50~1000 mm; Custom strokes available) |
Vollständiger Name: Single rod double-acting round cylinder, basic type with built-in magnet ring and rubber cushion, bore 20 mm, stroke 300 mm.
- Wichtigste technische Spezifikationen
| Kategorie | Spezifikation | Bemerkungen |
| Allgemeine Informationen | ||
| Marke / Serie | SMC CG1 Series | Industrial standard round cylinder |
| Modell Nr. | CDG1BN20-300 | Standardbestellnummer |
| Montageart | Grundtyp (accessories mountable) | Konform mit ISO 6431 |
| Schutzklasse | IP40 | Dustproof and splash-proof |
| Operation Characteristics | ||
| Betriebsmodus | Double acting, single rod | Bi-directional pneumatic drive |
| Built-in Magnet Ring | Ja (marked by D) | Magnetic switch mountable for position detection |
| Cushion Type | Rubber cushion (marked by N) | Polyurethane cushions at both ends for impact absorption |
| Abmessungen | ||
| Bore | 20 mm | Standardgröße |
| Schlaganfall | 300 mm | Standard stroke |
| Piston Rod Diameter | 8 mm | High-strength chrome-plated stainless steel |
| Barrel Material | Aluminium alloy (Hard anodized) | Leicht & korrosionsbeständig |
| Piston Rod Material | Edelstahl (SUS304) | Wear-resistant & rust-proof |
| Gewicht | Ca. 0.8 kg | With slots for magnetic switches |
| Leistungsparameter | ||
| Operating Pressure Range | 0.05~1.0 MPa | For compressed air |
| Max. Operating Pressure | 1.0 MPa | Transient peak ≤ 1.2 MPa |
| Betriebstemperatur | -10°C ~ +60°C | Standard environment with dry air |
| Max. Geschwindigkeit | 500 mm/s | Subject to load and air supply flow |
| Theoretical Output Force | 31.4 N @ 0.1 MPa / 314 N @ 1.0 MPa | Calculated value under no load |
| Port Parameters | ||
| Port-Thread | Rc1/8 (PT1/8) | Standard pneumatic thread |
| Number of Ports | 2 (1 on front cover, 1 on rear cover) | Available for single / double acting connection |
| Magnetic Switch Slots | Ja (4 slots) | Compatible with SMC D-M9 series switches |
- Cross-brand & Obsolete Model Replacement
| Originalmodell | Ersatzmodell | Beschreibung |
| SMC CG1BN20-300 | CDG1BN20-300 | Upgraded version with built-in magnet ring, voll kompatibel |
| FESTO DSBC-20-300-PPVA-N3 | CDG1BN20-300 | Funktionell gleichwertig; 20 mm bore, 300 mm stroke, double acting with magnet ring |
| Airtac SE20X300S | CDG1BN20-300 | Inländische Alternative; Similar dimensions, etwas geringere Leistung |
| CKD SCA2-CB-20B-300 | CDG1BN20-300 | Japanese brand alternative; Kompatible Einbaumaße |
| NUMATICS R20X300 | CDG1BN20-300 | European & American brand alternative; Verify mounting style before replacement |
Auswahlnotizen: Confirm full consistency of bore size, stroke, Montageart, cushion type and magnetic switch compatibility for replacement.
- Partial Model List of CDG1B Series
| Modell | Bore (mm) | Schlaganfall (mm) | Montageart | Cushion Type | Built-in Magnet Ring | Bemerkungen |
| CDG1BN20-50 | 20 | 50 | Basic | Rubber | Ja | Standardmodell |
| CDG1BN20-100 | 20 | 100 | Basic | Rubber | Ja | Standardmodell |
| CDG1BN20-150 | 20 | 150 | Basic | Rubber | Ja | Standardmodell |
| CDG1BN20-200 | 20 | 200 | Basic | Rubber | Ja | Standardmodell |
| CDG1BN20-250 | 20 | 250 | Basic | Rubber | Ja | Standardmodell |
| CDG1BN20-300 | 20 | 300 | Basic | Rubber | Ja | Subject model |
| CDG1BN20-350 | 20 | 350 | Basic | Rubber | Ja | Standardmodell |
| CDG1BN20-400 | 20 | 400 | Basic | Rubber | Ja | Standardmodell |
| CDG1AN20-300 | 20 | 300 | Basic | Air cushion | Ja | Adjustable cushion |
| CDG1BF20-300 | 20 | 300 | Flansch | Rubber | Ja | Front flange mounting |
| CDG1BK20-300 | 20 | 300 | Foot | Rubber | Ja | Bottom mounting |
| CDG1BT20-300 | 20 | 300 | Trunnion | Rubber | Ja | Oscillating mounting |
- Häufige Fehler & Fehlerbehebung
| Fehlerphänomen | Mögliche Ursachen | Lösungen |
| Cylinder fails to move / Slow movement | 1. Insufficient air supply pressure | 1. Adjust pressure to 0.4~0.6 MPa |
| 2. Pipeline blockage / Air leakage | 2. Tighten fittings and clean filter | |
| 3. Solenoid valve failure | 3. Test solenoid valve and replace if necessary | |
| 4. Piston rod stuck | 4. Dismantle to check rod straightness and clean cylinder barrel | |
| Cylinder crawling / Shaking | 1. Insufficient lubrication | 1. Install air lubricator with ISO VG32 lubricant |
| 2. Überlast | 2. Reduce load or use larger bore cylinder | |
| 3. Moisture / impurities in compressed air | 3. Fit air dryer and precision filter | |
| 4. Improper cushion adjustment | 4. Adjust cushion needle valve for steady deceleration | |
| Air leakage | 1. Aged / damaged sealing rings | 1. Replace sealing kit (standard repair kit) |
| 2. Scratched piston rod | 2. Repair or replace piston rod and check guide bushing | |
| 3. Loose end cover bolts | 3. Tighten end cover bolts diagonally and evenly | |
| 4. Damaged tube fittings | 4. Renew air tubes and fittings for good sealing | |
| No signal from magnetic switch | 1. Incorrect switch position | 1. Reposition switch to align with piston magnet ring |
| 2. Failed magnet ring | 2. Replace cylinder or piston assembly | |
| 3. Damaged switch | 3. Test switch continuity and replace if faulty | |
| 4. Falsche Verkabelung | 4. Check wiring and correct polarity | |
| Poor cushioning / Loud impact noise | 1. Worn cushion pads | 1. Replace polyurethane cushion pads |
| 2. Improper cushion valve setting | 2. Gradually adjust needle valve until impact noise disappears | |
| 3. Excessive load inertia | 3. Add external buffer or speed control valve | |
| 4. Overhigh air pressure | 4. Reduce working pressure and optimize system design | |
| Bent / Deformed piston rod | 1. Exposed to radial load | 1. Add guide unit to avoid radial force |
| 2. Large coaxiality error during installation | 2. Calibrate installation; keep coaxiality ≤ 0.1 mm/m | |
| 3. Excessive impact force | 3. Optimize cushion system to reduce impact | |
| 4. Material fatigue | 4. Replace piston rod or use reinforced cylinder |
- Anwendung & Branchenfälle
6.1 Anwendbare Szenarien
Automatisierte Produktionslinien: Materialhandhabung, workpiece positioning, assembly and pressing
Elektronische Fertigung: PCB transportation, semiconductor packaging and component positioning
Verpackungsmaschinen: Carton forming, Versiegelung, labeling and filling actuators
Essen & Getränkeindustrie: Cap tightening, bottle conveying and filling valve control
Werkzeugmaschinen: Clamp actuation, worktable positioning and tool changing mechanism
Medical Equipment: Sample delivery and positioning for diagnostic instruments
6.2 Nicht empfohlene Szenarien
Severely corrosive environment: No special anti-corrosion treatment; Not suitable for strong acid, alkali or heavy salt spray. Stainless steel series is recommended.
Oil-free operation: Long-term operation without lubrication accelerates seal wear. PTFE seals are required.
Hochfrequenz & high-speed operation: Not for cycling over 5 times per second. High-speed cylinder series is recommended.
Heavy radial load: Radial force will bend the rod and damage seals. Extra guide mechanism is required.
Extreme temperature: Operation below -10°C or above +60°C impairs sealing performance and service life.
6.3 Typische Anwendungsfälle
Fall 1: Electronic Component Assembly Line
Anwendung: Positioning for component insertion on PCB
Konfiguration: CDG1BN20-300 + SMC D-M9B magnetic switch + precision guide rail
Wirkung: Positioning accuracy ±0.1 mm with excellent repeatability, meeting automated assembly requirements.
Fall 2: Carton Sealing Station of Packaging Machine
Anwendung: Folding carton top flaps and tape sealing
Konfiguration: Two CDG1BN20-300 cylinders working synchronously for dual-side flap folding
Wirkung: Adjustable speed, reliable cushioning, low noise and higher sealing efficiency.
Fall 3: Automotive Parts Inspection Equipment
Anwendung: Clamping and positioning for dimensional inspection of parts
Konfiguration: CDG1BN20-300 + precision pressure regulator for flexible clamping
Wirkung: No workpiece damage, stable clamping force and accurate inspection data.
- Auswahlrichtlinien & Schnelle Regeln
- Bore size: Select by figures (20/25/32/40/50/63/80/100 mm); Calculate output force based on load.
- Schlaganfall: Standard range 50~1000 mm; Custom strokes are available.
- Montageart: Recognized by letters: B=Basic, F=Flange, K=Foot, T=Trunnion.
- Cushion type: Recognized by suffix: N=Rubber cushion, A=Adjustable air cushion.
- Magnet ring: CDG1 = With built-in magnet ring; CG1 = Without magnet ring.
- Replacement rule: Bore, stroke, mounting style and cushion type must be identical.
Verpackung & Order Note: 1 unit per package, Mindestbestellmenge 1 Einheit. It is recommended to prepare 2~3 units as spares for general industrial automation.
Empfohlenes Zubehör: SMC D-M9 series magnetic switches, AC series filters, AR series pressure regulators, SY series solenoid valves.
