CG320SA Semi-auto Cylindrical Grinding Machine

Technical parameters

Model		CG320 SA
Distance between centers		1080mm
Center height		180mm
Max. swiveling diameter		Φ350 mm
Max. grinding length		1000mm
Grinding range		Φ5~Φ320mm
Max. weight of workpiece between centers		100kg
Max. weight of workpiece in chuck		30kg
Swiveling angle of table	Clockwise	3° (1000)
	Counter-clockwise	7° (1000)
Grinding wheel	Dimensions (OD × W × ID)	Φ400×(32~50)×203mm (16x(1.3-2)x8”)
	Max. linear velocity	35m/s
Table movement per rev of hand wheel		10 mm
Hydraulic control speed		0.1-3 m/min
Swiveling angle of wheelhead	Clockwise	3°
	Counter-clockwise	3°
Travel		150mm (5.9”)
Feed movement of manual control		70mm (2.8”)
Rapid travel of hydraulic control		35mm (1.6”)
Cross feed of wheelhead	Per rev of hand wheel	1mm
	Micro feeding	0.002mm
	Rough feed cutting speed	0.08-1mm/min; stepless
	Fine feed cutting speed	0.06-0.5mm/min; stepless
	Automatic feed depth	0.45mm
	Automatic endpoint rough feed	0.002-0.02mm
	Automatic endpoint fine feed	0.001-0.01mm
Workhead	Spindle speed	63/125/250/500 r/min
	Swiveling angle (counter-clockwise)	90°
	Spindle taper	MT4
Tailstock	Manual travel of center sleeve mm	25 (1”)
	Taper of center sleeve	MT4
Hydraulic system	Flow of pump	14L/min
	System working pressure	0.8-1MPa
	Capacity of oil tank	200L
Coolant system	Flow of oil pump	22L/min
	Capacity of coolant tank	130L
Cylindrical grinding motor power		4 kW
Cylindrical grinding motor speed		1500 r/min
Workhead motor power		0.75 kW
Workhead motor speed		1000 r/min
Oil pump motor power		1.1 kW
Oil pump motor speed		1500 r/min
Cooling pump motor power		0.125 kW
Cooling pump motor speed		3000 r/min
Net weight		3100kg
Gross weight		3600kg
Packing dimension (L x W x H)		3950×2150×2280mm

Applications 3.1 Manual operation: longitudinal grinding, plunge-cutting grinding.
3.2 Fixed-distance semi-automatic grinding cycle: longitudinal & plunge-cutting grinding cycle.
3.3 Automatic gauge controlling semi-automatic grinding cycle: longitudinal & plunge-cutting grinding cycle.

Features
1. The hydraulic driving system adopts screw pump, so the machine can run smoothly with low noise.
2. The wheel head uses sleeve-type hydrodynamic bearing, gaining the features of high rotation precision and rigidity.
3. The feeding guideway uses plastic-coated guideway, improving the stability and vibration resistance in low-speed running.
4. The machine has the following features: high machining accuracy, rational overall layout, attractive appearance, centralized and visualized operating handles, and simple and safe operation.
5. The semi-automatic machines, whose cutting grinding and longitudinal grinding can be controlled by the sizematic system or automatic gauge, are suitable for processing small-lot or batched parts. All the grinding functions and movement sequences in the machining cycle are controlled by PLC (Programmable Logic Controller).

Cylindrical grinder/Cylindrical Grinding Machine is a type of grinding machine used to shape the outside of an object. The cylindrical grinder can work on a variety of shapes, however the object must have a central axis of rotation. This includes but is not limited to such shapes as a cylinder, an ellipse, a cam, or a crankshaft.

A cylindrical grinder
Cylindrical grinder/Cylindrical Grinding Machine is defined as having four essential actions:
The work (object) must be constantly rotating;
The grinding wheel must be constantly rotating;
The grinding wheel is fed towards and away from the work;
Either the work or the grinding wheel is traversed with respect to the other.
While the majority of cylindrical grinders employ all four movements, there are grinders that only employ three of the four actions.

History of cylindrical grinder
The origins of the cylindrical grinder, as with all other modern machine tools, stem from the experimentation and invention of John Wilkinson and later Henry Maudslay who built the first horizontal boring machine and the first engine lathe, respectively. The cylindrical grinder owes much of its development from the onset of the Industrial Revolution, particularly to the advent of reliable, inexpensive steel production and later the improvement of the grinding wheel. The basis for the modern day cylindrical grinder was first built in the 1830s by two men working independently, Jonathan Bridges and James Wheaton . It is unclear as to which man had first produced the machine but both are closely tied to the first historical appearance of the modern day tool. It took another 40 years before further improvement and refinement of the tool occurred.

The Brown & Sharpe company in Providence, RI was one of the first builders of the Willcox & Gibbs Sewing Machine, one of the first piece of precision machinery to be used in a residential setting. Brown believed that the shaft and needle bars of the sewing machine must be crafted from hardened tool steel. It was this desire that led to their experimentation with building a cylindrical grinder. The first attempt was simply a small lathe with a grinding wheel mounted to it. Subsequent attempts led to the cylindrical grinder displayed at the 1876 Centennial Exposition and the subsequent patent.

Types of cylindrical grinder/Cylindrical Grinding Machine
There are five different types of cylindrical grinding: outside diameter (OD) grinding, inside diameter (ID) grinding, plunge grinding, creep feed grinding, and centerless grinding.

Outside diameter grinding
OD grinding is grinding occurring on external surface a of an object between the centers. The centers are end units with a point that allow the object to be rotated. The grinding wheel is also being rotated in the same direction when it comes in contact with the object. This effectively means the two surfaces will be moving opposite directions when contact is made which allows for a smoother operation and less chance of a jam up.

Inside diameter grinding
ID grinding is grinding occurring on the inside of an object. The grinding wheel is always smaller than the width of the object. The object is held in place by a collet, which also rotates the object in place. Just as with OD grinding, the grinding wheel and the object rotated in opposite directions giving reversed direction contact of the two surfaces where the grinding occurs.

Plunge grinding
A form of OD grinding, however the major difference is that the grinding wheel makes continuous contact with a single point of the object instead of traversing the object.

Creep feed grinding
Creep Feed is a form of grinding where a full depth of cut is removed in a single pass of the wheel. Successful operation of this technique can reduce manufacturing time by 50%, but often the grinding machine being used must be designed specifically for this purpose. This form occurs in both cylindrical and surface grinding.

Centerless cylindrical grinder
A schematic of the centerless grinding process.
Centerless grinding is a form of grinding where there is no collet or pair of centers holding the object in place. Instead, there is a regulating wheel positioned on the opposite side of the object to the grinding wheel. A work rest keeps the object at the appropriate height but has no bearing on its rotary speed. The workblade is angled slightly towards the regulating wheel, with the workpiece centerline above the centerlines of the regulating and grinding wheel; this means that high spots do not tend to generate corresponding opposite low spots, and hence the roundness of parts can be improved. Centerless grinding is much easier to combine with automatic loading procedures than centered grinding; throughfeed grinding, where the regulating wheel is held at a slight angle to the part so that there is a force feeding the part through the grinder, is particularly efficient.

Control methods
There are three basics ways in which an operator can interact with a cylindrical grinder. Either manual manipulation of the machine, Numerical Control with a punched card system or using Computer Numerical Control using a pre existing interface designed for that machine or by using a PC as an interface to communicate with the grinder. The first two options are rarely if ever used today. CNC operated cylindrical grinders are the most technologically advanced, efficient, reliable systems in the manufacturing industry.

Applications
The cylindrical grinder is responsible for a plethora of innovations and inventions in the progression of science and technology. Any situation in which extremely precise metalworking is required, the cylindrical grinder is able to provide a high level of precision.[citation needed] From the automotive industry to military applications, the benefits of the cylindrical grinder are numerous.

Features
1. The hydraulic driving system adopts screw pump, so the machine can run smoothly with low noise.
2. The wheel head uses sleeve-type hydrodynamic bearing, gaining the features of high rotation precision and rigidity.
3. The feeding guideway uses plastic-coated guideway, improving the stability and vibration resistance in low-speed running.
4. The machine has the following features: high machining accuracy, rational overall layout, attractive appearance, centralized and visualized operating handles, and simple and safe operation.
5. The semi-automatic machines, whose cutting grinding and longitudinal grinding can be controlled by the sizematic system or automatic gauge, are suitable for processing small-lot or batched parts. All the grinding functions and movement sequences in the machining cycle are controlled by PLC (Programmable Logic Controller).

Discover the CG320SA Semi-Auto Cylindrical Grinding Machine – a precision workhorse for industrial metalworking. This external cylindrical grinder operates by rotating workpieces between centers while an abrasive wheel removes material with micron-level accuracy. Engineered for demanding applications in automotive, aerospace, and tool manufacturing, its rigid cast-iron bed houses critical components: variable-speed grinding spindle, hydraulic worktable, automatic infeed system, and coolant filtration. Operators benefit from semi-automatic cycles reducing labor intensity while maintaining exceptional surface finish (Ra 0.2μm) and dimensional consistency (±0.002mm). Key advantages include reduced setup time with quick-change chucks, vibration-dampening construction for chatter-free operation, and energy-efficient motors. Essential for precision shaft grinding, roller machining, and high-volume production runs requiring reliability and repeatable tolerances. Ищете высокоточный круглошлифовальный станок для наружной обработки? CG320SA – полуавтоматический цилиндрический шлифовальный станок с гидравлической подачей и ЧПУ-управлением. Конструкция включает усиленную станину, прецизионные шпиндели, автоматическую поперечную подачу и систему охлаждения. Применяется в машиностроении, авиакосмической отрасли и при производстве валов для обработки цилиндрических и конических поверхностей. Ключевые преимущества: высокая точность шлифования (до 0.002 мм), минимальная шероховатость Ra 0.2 мкм, энергоэффективность и надежность. Автоматизированные циклы повышают производительность при шлифовке шеек валов, роликов и втулок. Станок оснащен системой правки круга и виброзащитой для стабильного результата в серийном производстве. Descubra la rectificadora cilíndrica semiautomática CG320SA – solución ideal para rectificado exterior de precisión en talleres metalúrgicos. Esta máquina rectificadora de superficies cilíndricas funciona mediante muela abrasiva de alta velocidad y movimiento hidráulico de la mesa. Componentes clave: bancada de fundición, cabezal porta-pieza con variador, contrapunto rígido y sistema automático de avance. Especialmente eficaz en rectificado de ejes automotrices, rodamientos y componentes aeroespaciales donde se requieren tolerancias ajustadas (±0.002 mm) y acabado superficial fino (Ra 0.2μm). Ventajas competitivas incluyen automatización parcial para reducir fatiga operativa, bajo consumo energético y mantenimiento simplificado. Ideal para producción en serie con repetibilidad garantizada y mínimo desperdicio de material. Conheça a retificadora cilíndrica semiautomática CG320SA – equipamento essencial para usinagem de precisão de componentes rotativos. Esta máquina de retificar cilíndrica externa opera com cabeçote móvel hidráulico e rebolo de alta rotação para acabamento superficial impecável (Ra 0.2μm). Estrutura robusta inclui base em ferro fundido, sistema de dressagem automática e contraponto regulável. Aplicações-chave: retificação de eixos, pinos e tubos na indústria automotiva, de moldes e componentes hidráulicos. Diferenciais: precisão dimensional garantida (±0.002 mm), ciclo semiautomático para alta produtividade, baixo custo operacional e durabilidade comprovada em ambientes industriais intensivos. Perfeita para manutenção de equipamentos e produção em média escala com repetibilidade. تقدم آلة CG320SA نصف الأوتوماتيكية للطحن الأسطواني حلاً متطورًا لعمليات التجليخ الخارجي الدقيق. تعمل هذه المطحنة الأسطوانية بمحورين دوارين وعجلة كاشطة عالية السرعة لمعالجة الأسطح المعدنية. التصميم الهيكلي يشمل قاعدة حديدية صلبة، نظام تبريد فعال، ووحدة تحكم هيدروليكية. تطبيقات رئيسية: تصنيع عمود الكرنك، أسطوانات المحركات، ومكونات الطائرات بدقة ±0.002 مم ونعومة سطحية Ra 0.2 ميكرون. مزايا تنافسية: دورة شبه آلية لتقليل الجهد البشري، استهلاك طاقة منخفض، وصيانة سهلة. مثالية لورش تصنيع المعادن ومصانع الإنتاج الكمي التي تبحث عن موثوقية طويلة الأمد وكفاءة تشغيلية عالية في تجليخ القضبان الدائرية والمخروطية. Entdecken Sie die halbautomatische Rundschleifmaschine CG320SA – präzisionslösung für die externe zylindrische Metallbearbeitung. Diese Rundschleifmaschine arbeitet mit automatischem Einstechvorschub und Hochleistungsschleifspindel für mikrometergenaue Ergebnisse. Schlüsselkomponenten: vibrationsgedämpftes Maschinenbett, Kühlmittelfilter und stufenlos einstellbarer Werkstückantrieb. Ideal für die Serienfertigung von Wellen, Lagern und Hydraulikkomponenten mit Toleranzen bis ±0.002 mm und Oberflächenrauheit Ra 0.2μm. Vorteile: Reduzierte Rüstzeiten durch Schnellspannsysteme, energieeffizienter Betrieb und robuste Konstruktion für den industriellen Dauereinsatz. Besonders effektiv beim Außenschleifen komplexer Konturen und Präzisionsreparaturen in Werkzeugbau und Automobilindustrie. Ontdek de CG320SA halfautomatische cilindrische slijpmachine – een topprecisie-oplossing voor buitencirkel slijpen in metaalbewerking. Deze rondslijpmachine combineert hydraulische tafelvoeding met programmeerbare slijpcycli. Constructie omvat gietijzeren frame, automatisch kruissledesysteem en hoogfrequent spil. Essentieel voor het slijpen van assen, pennen en lagerelementen in auto- en luchtvaartindustrie met nauwkeurigheid ±0.002 mm en oppervlakteafwerking Ra 0.2μm. Sleutelvoordelen: verminderde bedienerbelasting door semi-automatisering, lage energieconsumptie en onderhoudsvriendelijk ontwerp. Geschikt voor middelgrote series en precisiegereedschapsproductie waar herhaalbaarheid en slijpsnelheid cruciaal zijn voor winstgevendheid. Poznaj półautomatyczną szlifierkę do wałków CG320SA – precyzyjne rozwiązanie do obróbki zewnętrznych powierzchni cylindrycznych. Działa poprzez synchronizację ruchu obrotowego przedmiotu z przesuwem ściernicy. Konstrukcja: żeliwne łoże, głowica szlifierska z regulacją prędkości, hydrauliczny stół. Zastosowania: przemysł motoryzacyjny, produkcja łożysk i elementów hydrauliki z dokładnością ±0.002 mm i chropowatością Ra 0.2μm. Zalety: skrócony czas przezbrojenia, energooszczędność, system automatycznych cykli szlifowania. Idealna do precyzyjnej obróbki czopów wałów i produkcji seryjnej zapewniająca powtarzalność wymiarów i niskie koszty jednostkowe. Descoperiți mașina semiautomată de rectificat cilindrică CG320SA – soluție avansată pentru rectificarea exterioară de precizie. Acest echipament de rectificat cilindric utilizează mișcare hidraulică și viteză reglabilă a axului. Componente structurale: bază din fontă, sistem de răcire și control automatizat. Aplicații cheie: prelucrarea arborilor, rulmenților și pieselor auto cu toleranțe ±0.002 mm și rugozitate Ra 0.2μm. Avantaje: ciclu semiautomat pentru productivitate sporită, consum redus de energie și întreținere simplificată. Ideală pentru atelierele de reparații și producția de loturi medii, asigurând precizie repetabilă la rectificarea conurilor și suprafetelor cilindrice. Ismerje meg a CG320SA félautomata hengercsiszoló gépet – precíziós megoldás külső felületek megmunkálására. A hengerelő gép nagy fordulatú csiszolókoronggal és hidraulikus asztalmozgató rendszerrel működik. Szerkezeti elemek: öntöttvas ágy, automata előtolás és hűtőrendszer. Alkalmazási területek: tengelyek, csapágyak és repülőgép-alkatrészek megmunkálása ±0.002 mm tűréssel és Ra 0.2μm felületi érdességgel. Előnyök: csökkentett üzemidő automata ciklusokkal, energiahatékonyság és megbízható konstrukció. Ideális sorozatgyártáshoz és szerszámgyártáshoz, ahol az ismételhető minőség és a tartósság elsődleges szempont. Ανακαλύψτε το ημιαυτόματο κυλινδρικό μηχάνημα λείανσης CG320SA – λύση ακριβείας για εξωτερική λείανση μεταλλικών εξαρτημάτων. Λειτουργεί με περιστροφικό τραπέζι και αυτόματη διαμήκη κίνηση. Βασικά στοιχεία: κλιμακοστάσιο χυτοσιδήρου, υδραυλικό σύστημα και ψυκτικό. Εφαρμογές: βιομηχανία αυτοκινήτων, αεροδιαστημικής και παραγωγής μηχανημάτων με ανοχές ±0.002 mm και επιφανειακή ομαλότητα Ra 0.2μm. Πλεονεκτήματα: μειωμένος χρόνος ρύθμισης, ενεργειακή απόδοση και αξιοπιστία. Ιδανικό για ακριβή λείανση αξόνων, δακτυλίων και κωνικών επιφανειών σε σειριακή παραγωγή με εγγυημένη επαναληψιμότητα. Objevte poloautomatickou brusku na válce CG320SA – přesné řešení pro vnější válcové broušení. Tato kruhová bruska kombinuje hydraulický posuv stolu s automatickými cykly. Konstrukce zahrnuje litinové lože, chladicí systém a frekvenční měnič. Klíčové aplikace: broušení hřídelů, ložiskových kroužků a automobilových součástek s tolerancí ±0.002 mm a drsností Ra 0.2μm. Výhody: snížení obslužnosti díky poloautomatizaci, nízká spotřeba energie a dlouhá životnost. Ideální pro opravárenské dílny a středně velké série s důrazem na opakovatelnost a efektivitu broušení kuželových ploch.

Applications 3.1 Manual operation: longitudinal grinding, plunge-cutting grinding.
3.2 Fixed-distance semi-automatic grinding cycle: longitudinal & plunge-cutting grinding cycle.
3.3 Automatic gauge controlling semi-automatic grinding cycle: longitudinal & plunge-cutting grinding cycle.