RAS-300 Automatic Valve Seat Grinder Machine

The RAS-300 automatic grinder by Chinelatto grinds valve seats completely automatically, simulating manual movements in all directions. It operates with fast rotation at 300 rpm in left and right directions, up and down. Equipped with digital time selector, built-in vacuum gauge and inclined cylinder head holding device. Ideal for workshops and machine shops that need precision and agility in grinding valve seats of automotive engines.

The RAS-300 operates at 300 rpm on the suction cup shaft, enabling efficient seat grinding. The shaft height is adjustable up to 5.9 inches (150mm), adapting to different cylinder head types. Total equipment dimensions are 15.7 x 18 x 35.4 inches (400 x 458 x 900mm), with cylinder head holding device measuring 9.1 x 34.1 inches (230 x 865mm). Electric motor 0.25 hp, operating at 220/380 volts three-phase. Approximate weight 132 lb (60 kg), facilitating installation and movement in the shop.

The machine comes equipped with an inclined cylinder head holding device specific for automotive line, with dimensions of 9.1 x 34.1 inches (230 x 865mm) length and width. This device allows securing various types of automotive cylinder heads for seat grinding. The adjustable height of 5.9 inches (150mm) of the suction cup shaft ensures adaptation to different cylinder head thicknesses. The vacuum system with built-in vacuum gauge ensures proper fixation of grinding tools during the automated process.

The automatic grinder eliminates repetitive manual work, executing simulated movements in all directions automatically. While the manual process depends on operator skill, the automatic ensures standardization with digital time selector. Grinding is completed in approximately 1 minute per seat, with audible signal when finished. The manual version requires greater physical effort and variable time, while the automatic maintains consistent quality and superior productivity for machine shops with regular demand.

The RAS-300 equipment secures the cylinder head in the holding device and uses vacuum system to grip the grinding tool. Movements are manually simulated at 300 rpm speed, rotating in left/right directions and moving up/down. The digital selector programs grinding time, while the vacuum gauge monitors clamping pressure. At the end of the programmed cycle, it emits audible signal indicating completion. The entire process maintains dimensional precision of the seats.

The RAS-300 has robust construction with 0.25 hp motor and components sized for professional use. Basic maintenance includes regular cleaning of vacuum system, seal verification and lubrication according to manual. The built-in vacuum gauge facilitates system monitoring. Being automatic, it reduces wear from human error compared to manual process. Extended lifespan with proper maintenance. Technical support through authorized Chinelatto network, with spare parts availability for operational continuity.

The RAS-300 is quoted on demand, and pricing varies with each customer's needs, including accessories, tooling and optional features. With in-house technology developed by Chinelatto in Brazil since 1962, you can count on responsive support from our technical team. Spare parts: many are kept in stock and the others are manufactured within a reasonable lead time. Request a quote at chinelatto.com.br/contact — our sales team will contact you very soon.