SM4-1200S 4-Person Square Crane Man Basket With Overhead Protection
Product Description
The SM4-1200S is a four-occupant crane-suspended personnel platform with integrated overhead protection, engineered for large-scale industrial maintenance and construction work where full crews must operate together at height under overhead hazards. Its 58″ x 58″ square footprint provides a spacious, stable work area for four workers plus tools and materials while maintaining a balanced footprint that works well around structural steel and process equipment.
Designed to meet or exceed OSHA 1926.1431 requirements for hoisting personnel, the SM4-1200S features a heavy-duty 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, along with a fixed overhead frame and perforated overhead protection panels. The 1,200 lb rated capacity supports four workers with shared tools and light materials, and the 865 lb basket weight reflects the robust frame and canopy while keeping total suspended load predictable for crane selection and lift planning.
Like all Lifting Technologies Premier crane man baskets, the SM4-1200S is manufactured in Missoula, Montana, and ships as a turnkey package that includes a four-leg sling assembly, detachable test weight system, and complete documentation. Each unit is proof-load tested at 1,500 lb—125% of its 1,200 lb rated capacity—before leaving the facility, 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 SM4-1200S is widely used in power generation, construction, and mining or heavy industrial environments where four-person crews handle installation, repair, and inspection tasks at height in overhead-hazard areas. Its large square work surface and overhead protection make it ideal for tasks that require multiple workers, tools, and components in a single lift, such as boiler panel work, bridge and structural projects, and maintenance on large mining or heavy industrial equipment.
Industrial Applications
Power Generation & Utilities
In power generation facilities, major outages often require full crews working on boilers, ducts, precipitators, and surrounding structural steel where overhead steel, cable trays, and equipment increase dropped-object risks. The SM4-1200S’s 4-person, 1,200 lb configuration and 58″ x 58″ square deck with overhead protection support boiler panel replacement, large duct section repairs, and extensive structural reinforcement work while helping shield crews from minor falling debris and scale.
The spacious square platform provides ample room for four technicians, welding and NDT equipment, and consumables while the overhead frame adds a protective barrier in congested turbine halls and boiler houses.
Construction & Structural
Large construction and structural projects—such as bridges, stadiums, industrial plants, and high-rise buildings—often require crew-sized platforms for steel erection, retrofit work, and finishing tasks where several workers must operate together under beams and decks. The SM4-1200S gives four-person crews a protected square platform for steel erection teams, bridge deck work, and multi-trade punch-list tasks performed beneath overhead girders, deck panels, or canopy structures.
The 58″ x 58″ deck provides a broad, balanced work surface for crews, tools, and small components while the overhead protection helps manage minor falling debris on active construction sites.
Mining & Heavy Industry
Mining operations and heavy industrial facilities depend on rugged personnel platforms for dragline maintenance, shovel and bucket repairs, crusher servicing, and mill work in demanding environments with significant overhead structures and equipment. The SM4-1200S supports four-person crews performing dragline boom work, shovel dipper maintenance, and mill repairs under overhead supports, chutes, and service structures while the overhead frame adds protection from minor falling material.
Its heavy-duty square deck and high capacity allow crews to stage tools, replacement wear parts, and service equipment in the basket, improving efficiency on heavy maintenance tasks that require multiple workers and repeated access along large machines or structures.
Features & Benefits
Full-Crew Square Work Platform With Canopy:The 58″ x 58″ deck provides a spacious, balanced work area for four workers, tools, and materials, while the integrated overhead protection adds coverage in overhead-hazard environments common to power, construction, and heavy industry.
Overhead Protection for Large Crews:The fixed overhead frame with perforated protection panels helps shield crews from minor falling debris and incidental contact with overhead structures, making the SM4-1200S suited to dense overhead environments such as boiler houses, bridge superstructures, and large industrial plants.
OSHA-Compliant Premier Construction: Built to comply with OSHA 1926.1431, the SM4-1200S 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 platform tipping and distributes load evenly.
Proof Load Tested to 1,500 lb: Each SM4-1200S is proof-load tested at 1,500 lb (125% of its 1,200 lb rated capacity) prior to shipment and ships with proof-load test certificates, inspection documentation, and serial-number traceability to support regulatory compliance and safety audits.
Heavy-Duty Weight-to-Capacity Balance With Overhead Protection: With an 865 lb basket weight and a 1,200 lb rated capacity, the SM4-1200S offers heavy-duty construction and canopy protection while keeping the total suspended load predictable for crane sizing and rigging planning on large industrial projects.
Frequently Asked Questions
What OSHA regulations apply to the SM4-1200S?
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 pre-lift inspections. The SM4-1200S is designed and documented to help users comply with these standards, including the overhead protection system.
How much weight can the SM4-1200S hold?
The SM4-1200S has a maximum rated capacity of 1,200 lb, which includes the combined weight of all four occupants plus tools, materials, and personal protective equipment. With an 865 lb basket weight, the total suspended load is 2,065 lb, excluding rigging; each unit is proof-load tested at 1,500 lb (125% of capacity) prior to shipment.
How many people can work in the SM4-1200S?
The SM4-1200S is rated for four occupants. Lift planning should distribute the 1,200 lb capacity across four workers and their equipment using conservative per-person weight allocations so that the combined weight of crew, tools, and PPE remains within the rated load.
When should the SM4-1200S be used instead of smaller square overhead-protection models?
The SM4-1200S is the best choice when tasks require a full four-person crew and extra deck space for tools and materials—such as major outage work, large structural projects, or heavy industrial maintenance in overhead-hazard areas. Smaller models like the SM2-600S and SM3-900S are better suited when two or three workers are sufficient or access constraints favor more compact platforms.
Can the SM4-1200S be customized?
Yes. Lifting Technologies can customize the SM4-1200S with options such as additional tool or material trays, modified overhead frame or gate configurations, specialized rigging arrangements, additional fall protection anchor points, and custom paint colors or markings for site identification.
What documentation comes with the SM4-1200S?
Each SM4-1200S ships with proof-load test certification, operator guidelines, pre-use inspection checklists, access to Lifting Technologies online video training, and detailed product specifications. Additional documentation and training resources are available to support regulatory compliance, site safety programs, and crew training.
Find Out More
For smaller square overhead-protection models, see the SM3-900S and SM2-600S.
For compact single-person square overhead protection, see the SM1-300S.
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.