RAM Mounts assembly kit - round base plate, short connecting arm, diamond base plate, C-ball (RAM-138U-B)

What does the RAM Mounts assembly kit RAM-138U-B include?

The RAM Mounts assembly kit RAM-138U-B consists of three main components: a round baseplate with an AMPS hole pattern and a 63.5 mm diameter, a short connecting arm, and a trapezoidal diamond baseplate. All three components are equipped with C-balls in a 1.5-inch size that form the patented ball-and-socket system. The round baseplate is fastened as a fixed mounting base to a surface, while the diamond baseplate is used to accept device holders and cradles. The short connecting arm provides a socket-to-socket length of approx. 63.5 mm and enables a particularly compact mounting with low space requirements. The overall height of the set is approx. 133 mm. The marine-grade aluminum offers excellent corrosion resistance and is therefore also suitable for use in humid or marine environments.

What is the difference between AMPS and diamond hole patterns?

The AMPS hole pattern is a standardized 4-hole drilling pattern found on the round baseplate of the RAM Mounts assembly kit RAM-138U-B. It serves as a universal mounting interface and is compatible with numerous mounting points and adapter plates from the RAM Mounts range. The diamond hole pattern is located on the trapezoidal baseplate and features two mounting holes that are specifically designed to accept RAM Mounts device holders and cradles. By combining both hole patterns in the assembly kit, a versatile mounting solution is created that provides maximum compatibility on both the mounting and device sides. The AMPS pattern, with its standardized hole spacings of approx. 30 x 38 mm, is supported by many manufacturers of GPS devices and navigation mounts, while the diamond pattern is optimized for the specific RAM Mounts device fittings.

For which applications is the short connecting arm suitable?

The short connecting arm of the RAM Mounts assembly kit RAM-138U-B is especially suitable for applications where little space is available or the device should be positioned as close as possible to the mounting surface. In vehicle cockpits, the short arm offers a space-saving solution for mounting tablets or navigation devices without restricting the driver’s view or freedom of movement. On boats, it allows mounting fishfinders and chartplotters in close proximity to the helm where the screen must always be clearly readable. In industry, the short arm is used on machine frames and workbenches where a compact and vibration-resistant mounting of tablets with work instructions or test protocols is required. The load capacity of up to 1.8 kg in standard use is sufficient for most tablets and navigation devices. The patented ball-and-socket system allows stepless angle adjustment in all directions despite the short arm. The modular design of the RAM Mounts system also allows the short connecting arm to be replaced at any time with a medium or long arm if requirements change. The individual components of the set are also available separately and can be combined with other elements from the extensive RAM Mounts range. The shock-absorbing properties of the rubber balls protect sensitive electronic devices from vibration damage and thus contribute to a longer service life. RAM Mounts’ 30-year warranty underscores the professional quality and reliability of this mounting set, which has proven itself worldwide in the most demanding operating environments. Delivery is in a practical polybag and includes all three components ready for installation.