Jagura JAG 8 C Centerless grinder

Jagura JAG 8 C Centerless grinder 

The Description of Mechanism

The machine bed is designed according to optimum mechanical principles, ensuring maximum stability and vibration-free operation. The machine bed is constructed of high-quality MEEHANITE cast iron and has been heat-treated, normalized, and precision ground before machining. The slideways are also heat-treated and precision ground, making this machine virtually distortion-free.

High torque The hydraulic motor features high torque even at low speeds. The regulating wheel remains exceptionally stable and smooth while operating at low revolutions. The pauses and vibrations, which occur with traditional chain drive systems, are eliminated.

High rigidity The regulating wheel is direct drive. Preloaded alloy bearings are mounted on the regulating wheel shaft, increasing rigidity.

Consistent roundness The direct drive regulating wheel also enables the operator to freely adjust revolution speed. Since the motor drives the spindle directly, part interference is eliminated. Regulating wheel shaft run-out is kept within 2 microns, no matter the revolution speed. Accuracy and consistent roundness are achieved more easily than with traditional chain-driven models.

The grinding and regulating wheel spindles are made of high-quality alloy steel SNCM439. They are normalized, hardened, heat-treated, tempered, and finally deep cold treated, precision ground, and machined. They are sturdy and strong enough to permit heavy-duty grinding at high speeds and assure superior surface finish.

The angle of the regulating wheel dressing unit can be swiveled to suit workpiece requirements, assuring cylindrical accuracy.

Both the grinding wheel and regulating wheel dressing units are hydraulically adjustable. Dressing slides are made of special alloy cast iron which is processed by annealing treatment. The surface is processed with precision hand scraping, ensuring outstanding wear resistance. This additionally assures a very smooth slide movement and workpiece straightness.

The lubrication system of the grinding wheel spindle is fitted with a pressure switch. This pressure switch allows starting only when oil enters the bearings. This safety protection prevents the spindle from running dry and being damaged.

The upper slide can be rapidly and precisely swiveled in order to grind tapers during infeed grinding and to provide perfect contact between workpiece and grinding wheel in thru-feed grinding.

Controls the oil temperature. Oil temperature is maintained at a constant temperature and keeps the oil circulating automatically.

Assures the oil stability and prevents chemical change.

Increases bearing life by keeping the connection between the spindle and alloy bearings stable. The spindle dimension will not change due to temperature change. A reduced oil temperature prolongs oil seal life, thereby reducing oil leakage.

Models:

JAG-8C

CF.7

CFN7

JAG-1810

JAG-1810A

JAG-1810-DNC

CFNI

JAG18T

JAG18TA