

RAM Mounts Double Ball U-Bolt Mount with Round Plate (RAM-101U-IP1) attaches a tablet, handheld or other device holder to a rail, handlebar or pipe with a diameter of 13–32 mm. The zinc-coated U-bolt base comes with two U-bolt sizes and a composite rail adapter for thinner tubes, and the medium 145 mm C-size (1.5") arm links it to a 63.5 mm round plate with the universal AMPS pattern. Typical uses include boat rails, carts and machine frames.
📦 What's in the box – RAM-101U-IP1
- Zinc-coated U-bolt base with C-size ball – for rails Ø 13–32 mm, with composite rail adapter and black cover caps
- Double socket arm (C size, medium) – 145 mm overall, 118 mm socket to socket
- Round plate with C-size ball – Ø 63.5 mm, AMPS 4-hole (30 × 38 mm) and 3-hole 120° (Ø 46 mm) patterns
- U-bolt hardware – 1/4"-20 U-bolts for Ø 13–25 mm and Ø 25–32 mm rails, 2 nyloc nuts, 2 rubber caps, U-bolt spacer
💡 You might also consider a lockable Tab-Lock tablet cradle or a Tough-Tray laptop holder with the AMPS pattern, and a key-locking knob to deter theft.
Key Features
- U-bolt rail mount – zinc-coated U-bolt base for rails Ø 13–32 mm; the composite rail adapter fits thinner tubes and black caps cover the bolt ends
- Patented ball-and-socket system – C-size (1.5") rubber balls adjust at both ends of the arm and damp shock and vibration
- Medium double socket arm – 145 mm overall, 118 mm socket to socket, with an easy-to-adjust knob
- Universal AMPS pattern – the Ø 63.5 mm round plate has the 4-hole AMPS (30 × 38 mm) and 3-hole 120° (Ø 46 mm) patterns used by most RAM and third-party cradles
- Load capacity – 1.8 kg (4 lb) for standard use, 1.4 kg (3 lb) for heavy-duty use
- Durable construction – marine-grade aluminium
Compatibility
- Rails and pipes Ø 13–32 mm
- Cradles and devices with the AMPS 4-hole pattern (30 × 38 mm)
- Holders with the 3-hole 120° pattern (Ø 46 mm)
- All RAM C-size (1.5") ball bases, adapters and holders
Technical Specifications
| Part Number | RAM-101U-IP1 |
|---|---|
| Product Type | Rail mount kit |
| Connection | RAM C-size ball (1.5"); AMPS 4-hole (30 × 38 mm); 3-hole 120° (Ø 46 mm) |
| Load Capacity | 1.8 kg (4 lb) for standard use, 1.4 kg (3 lb) for heavy-duty use |
| Material | Marine-grade aluminium |
| Dimensions | Arm 145 mm overall (118 mm socket to socket); round plate Ø 63.5 mm; rail clamp Ø 13–32 mm |
| Weight | 0.56 kg (1.24 lb) |
| In the Box | Zinc-coated U-bolt base with C-size ball, double socket arm (C size, medium), round plate with C-size ball, U-bolt hardware |
More RAM cradles, ball bases and socket arms are waiting in our Mobile Terminal Accessories collection. Planning a vehicle or forklift installation, or ordering for a whole fleet? Contact us for project support and volume pricing.
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