SM3-900S 3-Person Square Crane Man Basket With Overhead Protection
Product Description
The SM3-900S is a three-occupant crane-suspended personnel platform with integrated overhead protection, built for crew-based maintenance, inspection, and construction tasks in areas with overhead piping, steel, or equipment. Its 48″ x 48″ square footprint provides a generous, stable work area for three workers while remaining compact enough to position between structural members and around plant equipment.
Designed to meet or exceed OSHA 1926.1431 requirements for hoisting personnel, the SM3-900S features a high-strength welded steel frame, 42″ guardrails with 6″ toeboards, perforated steel sides from toeboard to mid-rail, an inward-swinging access gate, and multiple fall protection anchor points, plus a fixed overhead frame with perforated protection above the entire platform. The 900 lb rated capacity supports a three-person crew with shared tools and light materials, and the 690 lb basket weight reflects the robust structure and canopy while keeping the total suspended load predictable for lift planning.
Like all Lifting Technologies Premier crane man baskets, the SM3-900S is manufactured in Missoula, Montana, and ships as a turnkey package including a four-leg sling assembly, detachable test weight system, access to Lifting Technologies online video training, and complete documentation. Each unit is proof-load tested to 125% of its rated capacity—1,125 lb—before leaving the facility, and ships with proof-load certificates, inspection checklists, and operator guidelines to support site safety and regulatory compliance.
The SM3-900S is widely used in power generation, petrochemical, and construction applications where three-person crews must work together at height under overhead hazards. Its combination of a spacious square work area and overhead protection makes it a strong fit for coordinated welding, inspection, and repair tasks where crews need to face multiple directions and share workspace in a single lift.
Industrial Applications
Power Generation & Utilities
Power generation facilities depend on crew-sized platforms for major outage work on boilers, ducts, precipitators, and structural steel where overhead beams, cable trays, and equipment increase dropped-object risk. The SM3-900S’s 48″ x 48″ square deck and overhead protection are well suited for three-person boiler waterwall repairs, ductwork reinforcement, and structural inspections around large equipment where crews need space for tools and welding or NDT gear under overhead structures.
The square platform provides a balanced workspace for three technicians to coordinate tasks while the overhead frame offers a protective barrier in congested turbine halls and boiler areas.
Petrochemical & Refining
Refineries and petrochemical plants use personnel platforms for turnaround work on reactors, columns, and dense pipe racks where both coordination and overhead protection are critical. The SM3-900S supports three-person crews performing vessel externals inspections, coordinated piping repairs, and rack maintenance in units crowded with overhead piping and supports.
Its 48″ x 48″ footprint gives crews space to stage tools, components, and test equipment while fitting through many structural openings, and the overhead protection helps reduce exposure to minor falling debris from piping and structure above.
Construction & Structural
On construction and structural projects, crew-sized baskets are used for steel erection support, retrofit work, and bridge or building tasks where several workers must operate together under beams and decks. The SM3-900S provides a protected square platform for three-person crews performing connection work, bracing installation, and punch-list activities beneath overhead girders, deck panels, or canopy structures.
The 48″ x 48″ deck balances workspace and maneuverability, allowing crews to work multiple directions around the basket while the overhead frame helps manage minor falling debris on active construction sites.
Features & Benefits
Three-Person Square Work Platform With Canopy: The 48″ x 48″ deck provides ample room for three workers, tools, and small components in a balanced square footprint, while the integrated overhead protection adds coverage for overhead-hazard environments.
Overhead Protection for Crew-Based Tasks:The fixed overhead frame with perforated protection panels helps shield crews from minor falling debris and incidental contact with overhead structures, making the SM3-900S well suited for refineries, power plants, and construction projects with dense overhead systems.
OSHA-Compliant Premier Construction:Built to comply with OSHA 1926.1431, the SM3-900S includes 42″ guardrails, 6″ toeboards, perforated side panels, an inward-swinging gate, multiple fall protection anchor points, and a dedicated base-attached suspension system that minimizes tipping.
Proof Load Tested to 1,125 lb: Each SM3-900S is proof-load tested at 1,125 lb (125% of its 900 lb capacity) before shipment and ships with proof-load test certificates, inspection documentation, and serial-number traceability to support regulatory compliance and audits.
Robust Weight-to-Capacity Balance With Overhead Protection: With a 690 lb basket weight and a 900 lb rated capacity, the SM3-900S delivers heavy-duty construction and canopy protection while keeping total suspended load compatible with a wide range of cranes and rigging plans.
Frequently Asked Questions
What OSHA regulations apply to the SM3-900S?
OSHA 1926.1431 governs the use of crane-suspended personnel platforms in construction, specifying requirements for proof-load testing, guardrail and toeboard dimensions, fall protection anchor points, and pre-lift inspections. The SM3-900S is designed and documented to support compliance with these standards, including its overhead protection system.
How much weight can the SM3-900S hold?
The SM3-900S has a maximum rated capacity of 900 lb, which includes the combined weight of all three occupants plus tools, materials, and personal protective equipment. With a basket weight of 690 lb, the total suspended load is 1,590 lb, excluding rigging; every unit is proof-load tested at 1,125 lb (125% of capacity) prior to shipment.
How many people can work in the SM3-900S?
The SM3-900S is rated for three occupants. Lift planning should divide the 900 lb capacity among three workers and their equipment, using conservative per-person weight allocations so that total crew and tool weight stays within the rated load.
When should the SM3-900S be used instead of the SM3-900G or other square models?
Choose the SM3-900S when three-person crews are working under overhead piping, decks, or structural steel and need added overhead protection. The SM3-900G is more appropriate where overhead hazards are minimal or overhead clearance is tight, while the SM2-600S and SM4-1200S cover smaller and larger crew sizes respectively.
Can the SM3-900S be customized?
Yes. Lifting Technologies can customize the SM3-900S with options such as additional tool or material trays, modified overhead frame or gate details, specialized rigging configurations, additional fall protection anchor points, and custom paint colors or markings for site identification.
What documentation comes with the SM3-900S?
Each SM3-900S ships with proof-load test certification, operator guidelines, pre-use inspection checklists, access to Lifting Technologies online video training, and product specifications. Additional documentation and training materials are available to support regulatory compliance, safety programs, and crew training.
Find Out More
For the same 3-person square configuration without overhead protection, see the SM3-900G.
For smaller and larger square overhead-protection models, see the SM2-600S and SM4-1200S.
For an overview of Premier crane man baskets and OSHA guidance, visit the Premier Crane Man Basket page and the Crane Man Basket OSHA Regulations page.