Rocket R58 Cinquantotto Dual-Boiler

The Rocket R58 Cinquantotto is the true espresso machine for the serious prosumer. This compact dual-boiler machine features separate 0.58L brew and 1.0L steam boilers with PID electronic control and a dual temperature display, allowing you to dial in both espresso and steam to perfection simultaneously—all in an elegant stainless steel package engineered and manufactured in Milan.

Key Features

• Dedicated Dual Boilers: 0.58L espresso boiler + 1.0L steam boiler for independent temperature control
• PID Electronic Control: Dual display for precise temperature management of both brew and steam
• E61 Group Head: Thermally-stable, flow-controlled group design for superior espresso extraction
• Stainless Steel Boilers: Premium material for durability and aesthetic appeal
• Compact Footprint: Dual-boiler performance in a more space-efficient design than larger prosumer machines
• 58mm Portafilter: Standard format compatible with precision baskets and commercial accessories

Technical Specifications

What's in the Box

• Rocket R58 Cinquantotto espresso machine
• 58mm portafilter with 1-cup, 2-cup, and 3-cup baskets
• Blind basket for backflushing
• Tamper and distribution tool
• Cleaning tools and brush
• English manual with PID setup guide
• Power cable (US 110V)
• Temperature calibration materials

Frequently Asked Questions

Why choose the R58 over larger dual-boiler machines? The R58 offers dual-boiler performance in a more compact footprint, using dedicated smaller boilers optimized for quality over volume. It's perfect if you care deeply about espresso quality and milk drink consistency but don't have cafe-like space or output requirements.

What makes the smaller brew boiler (0.58L) a feature instead of a limitation? Smaller brew boilers heat faster and stabilize temperature more quickly. They're actually preferred by espresso enthusiasts for consistency. The 1.0L steam boiler is large enough for continuous milk steaming.

How does PID with dual display work? You can set different target temperatures for the brew and steam boilers independently. The dual display shows both temperatures in real time, letting you optimize espresso extraction and steam pressure simultaneously.

Is stainless steel better than brass for boilers? Both are excellent. Stainless steel is slightly more durable and corrosion-resistant; brass has better thermal conductivity. The R58 uses stainless for durability and the sleek appearance.

Care & Maintenance

The dual PID system requires protecting from water splashes. Backflush the group weekly with the blind basket. Descale both boilers every 3–6 months depending on water quality. Check the temperature calibration annually. The stainless boilers are extremely durable; expect excellent longevity with proper maintenance. Periodic descaling is the most important maintenance task.