RM3-900S/48 3-Person Round Crane Man Basket With Overhead Protection
Product Description
The RM3-900S/48 is a three-occupant crane-suspended personnel platform with integrated overhead protection, designed for crew-based inspection, maintenance, and construction work on towers, tanks, stacks, and other cylindrical or curved structures where overhead hazards are present. The 48″ round footprint offers a spacious, efficient workspace that allows crews to position around curved equipment with 360-degree access and no corner interference.
Engineered to meet or exceed OSHA 1926.1431 requirements for hoisting personnel, the RM3-900S/48 features a heavy-gauge steel frame and floor grating, a high-strength round tubular steel frame, 42″ guardrails with 6″ toeboards, perforated steel sides from toeboard to mid-rail, and a fixed overhead frame with perforated skylight panels approximately 79″ above the floor. The 900 lb rated capacity is sized for a three-person crew with tools and PPE, and the 525 lb basket weight provides robust construction and canopy protection while keeping the total suspended load compatible with many project cranes.
As part of the Premier round man basket line, the RM3-900S/48 ships as a turnkey package that includes a dedicated base-attached suspension system: a four-leg sling assembly of 1/2″ 6×36 IWRC wire rope secured to a master link and attached to the platform base with swage sockets and safety-threaded clevis pins, plus a safety leg for tie-off to the load line above the overhaul ball. Each basket incorporates Lifting Technologies’ easy-on/easy-off detachable test weight system, is proof-load tested at 1,125 lb—125% of its 900 lb rated capacity—before shipment, and ships with proof-load certificates, inspection checklists, access to Lifting Technologies online video training, and operator guidelines to support site safety and regulatory compliance.
The RM3-900S/48 is widely used in power generation, petrochemical, and construction settings where three-person crews must work together at height in overhead‑hazard conditions around cylindrical equipment. Its combination of round footprint, overhead protection, and crew-size capacity makes it suitable for stack inspections, column externals, tank work, and curved structural tasks that demand both space and protection.
Industrial Applications
Power Generation & Utilities
Power generation facilities use personnel platforms to reach stacks, towers, tanks, and curved duct sections where work follows circular or irregular profiles and overhead obstructions are common. The RM3-900S/48’s 48″ round footprint, overhead protection, and 900 lb capacity support three-person crews performing stack inspections, casing and duct repairs, and tower maintenance where full-circle access and canopy protection improve productivity and safety.
Crews can rotate the basket around cylindrical structures to position workers and tools as needed along the circumference while the overhead frame helps shield them from scale or minor debris falling from above.
Petrochemical & Refining
Refineries and petrochemical plants often require three-person access for column and vessel work, including tray inspections, nozzle maintenance, and external shell repairs on tall cylindrical equipment with significant overhead piping and structure. The RM3-900S/48 supports column externals inspections, nozzle and manway tasks, and other maintenance on large vessels and towers where a 48″ round footprint tracks the curvature and overhead protection mitigates minor falling debris.
Its overhead canopy reduces exposure to small falling objects from overhead lines, trays, and structural members, making it suitable for dense process units where three technicians must work together at height around curved equipment.
Construction & Structural
On construction and structural projects involving tanks, silos, chimneys, towers, and curved architectural elements, the RM3-900S/48 provides a protected three-person platform for welding, inspection, and finishing tasks. The 48″ round footprint offers a generous workspace for three workers and tools while allowing the basket to follow curved faces and access tight locations beneath beams or decks where overhead protection is important.
The round geometry lets the platform rotate around the structure and maintain close alignment with the curvature, while the overhead frame adds protection from minor falling debris and materials on active jobsites.
Features & Benefits
Three-Person Round Footprint With Canopy: The 48″ round platform provides a spacious, efficient workspace for three workers plus tools and small components, while integrated overhead protection supports operation under stacks, piping, and structural steel.
Optimized for Towers, Tanks, and Columns: The round footprint eliminates corners and is sized for work on medium-to-large cylindrical structures, allowing the basket to rotate around curved surfaces and maintain close, consistent positioning along the circumference.
OSHA-Compliant Premier Construction: Built to comply with OSHA 1926.1431, the RM3-900S/48 includes a dedicated base-attached suspension system that minimizes tipping, 42″ guardrails, 6″ toeboards, perforated side panels from toeboard to mid-rail, and a grab rail inside the entire perimeter providing personal fall arrest anchorage in compliance with OSHA 1926.502. Overhead protection panels with perforated skylights are positioned approximately 79″ above the floor.
Proof Load Tested to 1,125 lb: Each RM3-900S/48 is proof-load tested at 1,125 lb (125% of its 900 lb rated capacity) prior to shipment and includes Lifting Technologies’ easy-on/easy-off detachable test weight system, proof-load certificates, and inspection documentation for safety and audit readiness.
Robust Weight-to-Capacity Ratio: With a 525 lb basket weight and a 900 lb capacity, the RM3-900S/48 offers overhead protection and heavy-duty construction while keeping the total suspended load manageable, making it suitable for common crane and rigging configurations on industrial projects.
Frequently Asked Questions
What OSHA regulations apply to the RM3-900S/48?
OSHA 1926.1431 governs the use of crane-suspended personnel platforms in construction, defining requirements for proof-load testing, guardrail and toeboard dimensions, fall protection anchor points, and inspection procedures. The RM3-900S/48 is designed and documented to support compliance with these standards, including its overhead protection system.
How much weight can the RM3-900S/48 hold?
The RM3-900S/48 has a maximum rated capacity of 900 lb, which must include the combined weight of all three occupants plus tools, materials, and personal protective equipment. With a basket weight of 525 lb, the total suspended load is approximately 1,425 lb, excluding rigging; each unit is proof-load tested at 1,125 lb (125% of capacity) before shipment.
How many people can work in the RM3-900S/48?
The RM3-900S/48 is rated for three occupants. Lift planning should allocate the 900 lb capacity across three workers and their equipment using conservative per-person weight calculations so that total crew, tools, and PPE remain within the rated load.
When should the RM3-900S/48 be used instead of other round models?
The RM3-900S/48 is a good choice when three workers must operate together in overhead‑hazard environments around cylindrical structures and a larger round footprint is needed than the RM2-600S/38 provides, but a four-person basket is not required. The RM2-600S/38 suits two-person work, while the RM4-1200S/60 serves full four-person crews.
Can the RM3-900S/48 be customized?
Yes. Lifting Technologies can customize the RM3-900S/48 with options such as an inward-opening access gate with positive restraining device, additional tool or material trays, specialized rigging configurations, additional fall protection anchor points, and custom paint colors or markings for site identification. Custom-designed platforms of other sizes and shapes are also available.
What documentation comes with the RM3-900S/48?
Each RM3-900S/48 ships with proof-load test certification, operator guidelines, pre-use inspection checklists, access to Lifting Technologies online video training, and detailed product specifications, along with access to a use and safety handbook and training materials explaining applicable OSHA rules. Additional documentation can be provided to support regulatory compliance and site safety programs.
Find Out More
For smaller round overhead baskets, see RM1-250S/26, RM1-250S/32, RM1-300S/26, RM1-300S/32, and RM2-600S/38.
For a larger round overhead basket for four-person crews, see RM4-1200S/60.
For an overview of Premier round crane man baskets and OSHA guidance, visit the Premier Man Basket (Round) page and the Crane Man Basket OSHA Regulations page.