Rack lock

Self-locking chucks with rack

Chucks are fundamental components for drills, responsible for holding and rotating drill bits. Also known as bit holders, chucks with rack, or key chucks, these tools are designed to provide a secure connection between drills and the bits used. Chucks are widely used in various applications, including drilling metals, alloys, and construction materials. They are particularly effective with electric drills and battery-powered drills, in both residential and professional applications. Additionally, chucks are excellent for percussion drills, which are used for drilling walls and masonry.

Chucks that secure bits through a rack offer several advantages. First of all, they allow for quick and easy handling of bits, facilitating efficient changes. Furthermore, rack closures ensure a secure grip, minimizing the risk of bit slippage during use. This feature is particularly useful when working with hard materials, where the applied force is significant. Another advantage is the durability of the chucks themselves, which withstand wear and high loads better than lower-quality models.

Available with rack closure, the PRIMA I series is designed to be particularly robust, with enhanced performance, recommended for heavy and industrial use on machine tools, work centers, lathes, and milling machines, built to be indestructible and suitable for frequent workshop use.

The PRIMA I self-locking chuck features cone fittings. The PRIMA M-S series is used for metal drilling and can be mounted on electric hand drills or frequently used power tools by professionals, carpenters, masons, maintenance workers, electricians, and mechanics. PRIMA M-S chucks offer a good balance between quality and price; designed for excellent durability and closure precision, they can be used daily and with high frequency. They are available with tapered and threaded shanks.

The PRIMA–L series is made for both left and right rotations, designed for professionals and DIY enthusiasts with frequent but light-use applications. Great for use with battery drills and screwdrivers, they can perform drilling and tapping, featuring a threaded shank with internal drilling for a left-hand fixing screw, preventing the chuck from loosening during rotation changes.

Moreover, for the food, pharmaceutical, and medical sectors, Rohm has created and designed the self-locking rack chuck PRIMA – NIRO, completely made of stainless steel, avoiding the risk of product contamination and preventing corrosion on the chuck itself.

It is important to emphasize that chucks should be used exclusively with right-hand bits, and the rotation direction of the drills should be clockwise to ensure proper operation. Battery-powered and cordless drills are highly recommended for their portability and versatility. However, it is essential to ensure that the rotation is single right to avoid damage to the chucks or bits. Users should also pay attention to the maintenance of chucks, ensuring they are always clean and in good condition to prolong their lifespan and maximize their effectiveness.