RAM® Rail Clamp Ball Base for 1.25" - 1.875" Rails - D Size

Part#: RAM-D-271U-12
UPC: 793442227110
$62.49

Size Guide

Ball sizes
  • A Size 0.56" ball
  • B Size 1" ball
  • C Size 1.5" ball
  • D Size — this product 2.25" ball
  • E Size 3.38" ball

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
A0.56" (14.3 mm)0.5 lbAction cameras and other ultra-light devices
B1" (25.4 mm)2 lbsPhones, GPS units, and small tablets — the most common size
C1.5" (38.1 mm)4 lbsLarge tablets, fish finders, and rougher rides
D — this product2.25" (57.2 mm)6 lbsRugged tablets, laptops, and heavy equipment
E3.38" (85.9 mm)15 lbsLarge 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.

Overview

The RAM-D-271U-12, round pipe base, consists of a 2.25" rubber ball connected that will connect to a pipe tubing diameter from 1.25" to 1.875" in diameter.

hardware included:

(2) 1/4"-20 x 1.5" Screws
(2) 1/4"-20 Nyloc Nuts
(2) Rubber Caps

clamp range:

1.25" - 1.875" 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:

0.86 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.

Print

Documents

Drawing File: Rail Clamp Base
Material Handling Catalog
Knowledge Base: Ball Sizes

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RAM® Rail Clamp Ball Base for 1.25" - 1.875" Rails - D Size
$62.49

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