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RAM® Double Ball Mount for Raymarine A50, A50D, A57D & A70
Part #: RAM-D-101-RM1U UPC: 793442925443

Product Information
Overview	The RAM-D-101-RM1U consists of a 3.68" diameter round base with the universal AMPS hole pattern, STANDARD length double socket arm and 3.68" round base. The RAM-D-101-RM1U includes hardware that will attach Raymarine Chartplotters to the mount. Designed into the mount is a 2.25" diameter patented rubber ball and socket system with adjustment points at both socket ends of the arm.

Specifications
hardware included	(4) #10-24 x 3/8" Machine Screws
product dimensions	Overall Height: 11.125"
socket to socket length	6.88"
hole pattern	See Drawing
plate size	3.68" Diameter
ball size	D Size (2.25")
weight capacity	Standard Use: 6 lbs Heavy-Duty Use: 5 lbs
materials	Marine-grade aluminum
packaging type	Poly Bag
Weight	1.12 lb

RAM® Double Ball Mount for Raymarine A50, A50D, A57D & A70

Name: RAM® Double Ball Mount for Raymarine A50, A50D, A57D & A70
Brand: RAM Mounts
SKU: RAM-D-101-RM1U
Price: 189.99 USD
Availability: InStock

Part#: RAM-D-101-RM1U

UPC: 793442925443

$189.99

Overview

The RAM-D-101-RM1U consists of a 3.68" diameter round base with the universal AMPS hole pattern, STANDARD length double socket arm and 3.68" round base. The RAM-D-101-RM1U includes hardware that will attach Raymarine Chartplotters to the mount. Designed into the mount is a 2.25" diameter patented rubber ball and socket system with adjustment points at both socket ends of the arm.

hardware included:

(4) #10-24 x 3/8" Machine Screws

product dimensions:

Overall Height: 11.125"

socket to socket length:

6.88"

hole pattern:

See Drawing

plate size:

3.68" Diameter

ball size:

D Size (2.25")

weight capacity:

Standard Use: 6 lbs
Heavy-Duty Use: 5 lbs

materials:

Marine-grade aluminum

packaging type:

Poly Bag

Weight:

1.12 lb

Return Policy:

All products purchased from RAM® can be returned within 30 days with no restocking fee (return shipping not provided). See full return policy here.

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RAM® Double Ball Mount for Raymarine A50, A50D, A57D & A70

$189.99

Every RAM® mount is built around a rubber ball and socket system. The ball size sets how much weight the mount can carry. Match it to your device for smooth adjustment with a rock-solid hold.

RAM Mounts ball size specifications and typical uses
Size	Ball Diameter	Max Load*	Best For
A	0.56" (14.3 mm)	0.5 lb	Action cameras and other ultra-light devices
B	1" (25.4 mm)	2 lbs	Phones, GPS units, and small tablets — the most common size
C	1.5" (38.1 mm)	4 lbs	Large tablets, fish finders, and rougher rides
D — this product	2.25" (57.2 mm)	6 lbs	Rugged tablets, laptops, and heavy equipment
E	3.38" (85.9 mm)	15 lbs	Large displays and demanding aviation or industrial use

*Approximate capacity for a standard ball with a mid-length arm. Shorter arms and steel-reinforced posts increase real-world capacity.

Reading part numbers

The letter after RAM tells you the ball size: RAM-B-166 uses a 1" B ball, while RAM-D-201 uses a 2.25" D ball. C size parts are the exception and carry no letter, so RAM-201U is a C size arm.

Short, medium, and long double socket arms compared side by side. This product uses a Medium arm — Arm lengths

The double socket arm clamps over two balls — one on the base and one on your device holder. Arm length sets your reach: short arms are the most stable, while longer arms give you more freedom to position the device.

RAM Mounts overall and socket-to-socket arm lengths by ball size
Arm Length	Measurement	A Size	B Size	C Size	D Size — this product's ball size	E Size
Short	Overall Length	N/A	2.42"	3.56"	5.69"	5.69"
Short	Socket-to-Socket Length	N/A	1.75"	2.5"	4.66"	4.66"
Medium	Overall Length	2.42"	3.73"	5.69"	8.44" — this product	12.63"
Medium	Socket-to-Socket Length	1.75"	3"	4.66"	6.88"	9.88"
Long	Overall Length	3.56"	6"	9.13"	12.98"	N/A
Long	Socket-to-Socket Length	3.12"	5.31"	8"	11.41"	N/A