World-Class Mounting Systems

Size Guide

Ball Sizes
Arm Sizes
X
The unique double ball and socket design allows you to adjust your mount to the perfect viewing or operating angle, all with the turn of a single knob. This modular design can be configured with a variety of interchangeable components to fit your specific mounting needs.
B Size
Holds 2 lbs / 0.91 KG
1" Ball
Phones, Action Cameras, Light Duty Tablets
C Size
Holds 4 lbs / 1.81 KG
1.5" Ball
Fishfinders, Heavy Duty Tablets
D Size
Holds 6 lbs / 2.72 KG
2.25" Ball
Monitors, Large Fishfinders
E Size
Holds 15 lbs / 6.8 KG
3.38" Ball
Heavy Monitors
Ball Sizes Short Arm Medium Arm Long Arm
B Size Overall Length 2.42" / 6.1468cm 3.73" / 9.47cm 6.00" / 15.24cm
Socket-to-Socket Length 1.75" / 4.45cm 3.00" / 7.62cm 5.31" / 13.49cm
C Size Overall Length 3.56" / 9.04cm 5.69" / 14.45cm 9.13" / 23.19cm
Socket-to-Socket Length 2.50" / 6.35cm 4.66" / 11.84cm 8.00" / 20.32cm
D Size Overall Length 5.10" / 12.95cm 8.44" / 21.44 12.98" / 32.97
Socket-to-Socket Length 3.60" / 9.14cm 6.88" / 17.48cm 11.41" / 28.98cm
E Size Overall Length 7.31" / 18.57cm 12.63" / 32.08cm N/A
Socket-to-Socket Length 4.98" / 12.65cm 9.88" / 25.10cm N/A

RAM® Drill-Down Mount with Spring-Loaded Phone Holder

SKU Copied
SKU: RAM-B-138-UN5U
UPC Copied
UPC: 793442935145

RAM® Drill-Down Mount with Spring-Loaded Phone Holder
Copy SKU
SKU: RAM-B-138-UN5U
Copy UPC
| UPC: 793442935145

B SIZE
MEDIUM ARM
Size Guide
The RAM universal spring loading clamping cradle includes side clamps with rubber bumpers that adjust accordingly to the width of your device, securing your device in the cradle. The feet at the base of the cradle can pivot and slide, creating an opening for larger devices to be attached. A release button, located on the bottom right side of the cradle, allows for quick release of your device. Also included are two threaded inserts and a set of two nuts/bolts to connect the cradle to any of the RAM compatible mounts. Primary mounting applications for the clamping cradle is in LOW VIBRATION environments including cars, trucks and fleet vehicles. The RAM-B-138-UN5U also includes a medium length B-size arm and a 6.35cm (2.5") diameter round plate with universal AMPS hole pattern.

Information

Compatible Devices

Information

Product Weight
0.12 kg (0.26 lbs)
Hardware Included
Assembly Hardware
Holder Dimensions
Width Range: 4.45cm (1.75") - 8.89cm (3.5")
Socket To Socket Length
7.62cm (3")
Hole Pattern
4-Hole AMPS: 3.00 cm (1.181") X 3.80 cm (1.496") 3-Hole 120-Degree: 4.60cm (1.812") Diameter
Plate Size
6.35cm (2.5") Diameter
Ball Size
B Size (1")
Weight Capacity
Standard Use: 0.91 kg (2 lbs) Heavy-Duty Use: 0.45 kg (1 lbs)
Materials
Marine-grade aluminumHigh strength composite
Packaging Type
Poly Bag

Compatible Devices

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Components

RAM Mounts
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RAM-B-138U
RAM® Double Ball Drill-Down Mount with Diamond Plate - Medium
RAM Mounts
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RAM-HOL-UN5U
RAM® Universal Large Phone Holder


Complete Your Solution

Locking Knobs for B Size Socket Arms

RAM Mounts
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RAM-KNOB3LSU
RAM® Key Lock Knob with Steel Insert for B Size Socket Arms
RAM Mounts
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RAP-S-KNOB3-7U
RAM® Pin-Lock™ Security Knob with 7-Pin Pattern for B Size Socket Arms
RAM Mounts
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RAP-S-KNOB3U
RAM® Pin-Lock™ Security Knob for B Size Socket Arms

Diamond Plate Accessories

RAM Mounts
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RAP-462NPT
RAM® Vibe-Safe™ with NPT Adapter for 2-Hole Holders
RAM Mounts
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RAM-HOL-ROTO1U
RAM® Roto-View™ Adapter Plate
RAM Mounts
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RAP-326U
RAM® EZY-Mount™ Quick Release Adapter Kit

Accessories for AMPS Pattern Base Components

RAM Mounts
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RAM-202-225B-2U
RAM® Backing Plate Adapter
RAM Mounts
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RAM-HOL-ROTO1U
RAM® Roto-View™ Adapter Plate
RAM Mounts
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RAP-403U
RAM® Cable Manager with AMPS Hole Pattern for Electronic Mounts
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