Hydraulically-operated dock leveler RHH-4000

hydraulic

Overview
The RHH-4000 hydraulic dock leveler provides smooth transitions, consistent trailer contact and reliable safety for conventional loading operations. It incorporates the Smooth Transition Dok System® to reduce dock shock and whole-body vibration, improving operator comfort and equipment longevity.

Key Features

• Designed for conventional loading operations
• Constant contact controls
• Smooth Transition Dok System® to minimize bumps, gaps and vibration
• Optional Safe-T-Lip® (5" or 7" barrier) for vacant drop-off protection and end-load access
• Optional Safe-T-Strut™ through-the-lip maintenance support
• Self-Flexing Deck with L-beam stringers (allows up to 4" of deck flex to maintain trailer contact)
• Non-adjustable velocity fuse for free-fall protection
• Optional Infinite Lip Control for precise lip extension
• Push-button hydraulic operation
• Easy Clean Frame to reduce debris buildup
• Biodegradable hydraulic fluid option
• Optional maintenance pendant receptacle

Smooth Transition Dok System® — Safety and Ergonomics
The Smooth Transition Dok System® reduces dock shock and whole-body vibration through targeted structural features, lowering operator strain and equipment wear. Key design elements include:

• Two-Point Crown Control to reinforce the front hinge and reduce the speed‑bump effect
• Constant Radius Rear Hinge to maintain a minimal, consistent gap between floor and deck
• Extended Lip Chamfer (standard) for gradual transition from lip to trailer bed
• Beam construction with extra L-beams under the deck for strength and controlled flexibility

Lower Cost of Ownership
Four-sided rectangular-box construction (formed front header, interlocking and welded stringers) increases structural strength and reduces lifetime maintenance downtime. Hydraulic operation typically yields lower lifetime maintenance costs compared with mechanical levelers. Unit is tested and certified to ANSI MH30.1 performance standards.

Productivity & Energy Efficiency

• Push-button operation reduces ergonomic effort and speeds cycle time
• Infinite Lip Control decreases operating time and improves safety
• Under-leveler seal and dock door shelter options help reduce energy loss
• Easy Clean Frame simplifies removal of dirt and debris

Safety Features

• Safe-T-Strut™ provides through-the-lip support for safe maintenance and is tested for forklift impact
• Safe-T-Lip® protects against vacant-dock drop-off while allowing end-load access
• Non-adjustable velocity fuse arrests rapid descent within 3" (76 mm) under heavy load

Connected Capabilities
Compatible with Dok-Commander® and Rite-Hite ONE-enabled solutions for digital controls and monitoring, enabling visibility into safety events, equipment status and usage analytics to support maintenance planning.

Warranty

• Up to 20-year money-back warranty (per Dock Leveler Investment Guide)
• 5-year parts and 1-year labor
• 12-month limited money-back satisfaction guarantee

Technical specifications

• Model designation: RHH-4000
• Design: Hydraulic dock leveler with Smooth Transition Dok System®
• Safe-T-Lip® available in 5" or 7" barrier configurations
• Self-Flexing Deck with L-beam stringers (flex up to 4")
• Two-Point Crown Control and Constant Radius Rear Hinge to minimize deck/trailer gaps
• Optional Infinite Lip Control and Safe-T-Strut™
• ANSI MH30.1 performance tested and certified
• Compatible with Dok-Commander® and Rite-Hite ONE digital platforms