ERM3-900/48 Round Professional Man Basket (Open-Top)
Product Description
The ERM3-900/48 is the three-person, 48″ diameter round Professional crane man basket in Lifting Technologies’ suspended personnel platform line, designed for compact, centralized access under the crane hook when overhead protection is not required. Its circular plan minimizes size while providing a 48″ diameter workspace that allows three workers to stand in a shared central area around the hook for access to overhead or surrounding work.
Professional Round Man Basket features include a heavy-gauge steel frame and floor grating that create a solid, slip-resistant platform, along with 42″ high guardrails measured from the floor and a full-perimeter inner grab rail that provides personal fall-arrest anchorage in compliance with OSHA 1926.502, Subpart M. Perforated steel plate panels enclose the sides from the 6″ high toeboard up to the mid-rail, containing tools and small materials. An access gate with a positive restraining device allows controlled entry and exit; smaller-diameter Professional round models use a 1/2″ thick steel lifting bar with integrated master link, but ERM3-900/48 is a sling-suspended model, using the base-attached sling assembly.
The ERM3-900/48 (Slings) has a 48″ diameter, 900 lb maximum rated load capacity, 1,125 lb test weight, and a 350 lb basket weight. These values indicate that up to three workers plus tools, materials, and PPE can be carried as long as the combined live load does not exceed 900 lb, and that each basket is proof-load tested at 125% of rated capacity (1,125 lb) prior to shipment.
The suspension system for ERM series sling models uses a dedicated four-leg sling assembly of 1/2″ 6×36 IWRC wire rope attached to a master link for crane hook connection. Each leg is attached to the platform base via swage sockets and safety-threaded clevis pins, producing a base-attached hoisting configuration that helps minimize tipping and provides even load distribution across the platform. A fifth safety leg is included for tie-off to the load line above the overhaul ball to further stabilize the platform and conform to OSHA 29 CFR 1926.1431 personnel-hoisting practices.
Professional round baskets are finished with an electrostatic powder-coat in solid red (standard) for the platform, with the detachable test weight system highlighted in yellow, providing resistance to impact, abrasion, chemicals, and corrosion. Lifting Technologies’ unique easy-on/easy-off detachable test weight system allows convenient proof-load testing in the field, and each ERM3-900/48 is delivered with this test weight system, sling assembly, Use and Safety Handbook, proof-load certificates, and inspection checklists.
ERM3-900/48 is used where a three-person crew needs compact, symmetric access around a central point—such as vertical or overhead features—without the added height and weight of an overhead protection frame, making it suitable for overhead work in environments where falling-object hazards are controlled administratively rather than by a built-in roof.
Industrial Applications
Construction & Structural
On construction and structural projects, ERM3-900/48 is used for three-person work such as overhead inspection, connection work, or minor repairs where the crew must position around a central point under the hook. The 48″ circular plan keeps the basket relatively narrow while allowing workers to arrange themselves evenly around the perimeter for access up and around the work area.
The open-top configuration suits jobs with limited overhead falling-object risk or where such risks are mitigated through work sequencing, tool tethering, and controlled access above, giving workers unrestricted upward reach and visibility.
Industrial Plants & Maintenance
In industrial plants or refineries, ERM3-900/48 is suited to multi-person maintenance or inspection work where overhead piping, vessels, or equipment need attention from a centrally located, crane-suspended platform. The round shape is useful where the crew must work around 360 degrees of equipment or structure, rotating the basket as needed without worrying about corners.
Perforated side panels and 4″ toeboards help reduce the risk of dropped tools or parts, and the full-perimeter grab rail provides personal fall-arrest anchorage for all three workers, aligning with facility fall-protection programs.
Utilities & Infrastructure
For utilities and infrastructure, ERM3-900/48 can be deployed where crews need central access beneath structures such as bridges, towers, or gantries, allowing technicians to move around the interior perimeter to reach multiple points without repositioning the basket as often as with rectangular platforms. The compact 48″ diameter makes it easier to fit through tighter openings or between structural elements.
Open-top use assumes overhead hazards are managed by controlling traffic, restricting work directly overhead, and applying dropped-object prevention so that shielded overhead framing is unnecessary.
Features & Benefits
Three-Person Round Work Area: The 48″ diameter open-top round platform provides a compact, centralized work area for up to three workers plus tools, allowing efficient 360-degree positioning around a central work point.
Professional-Series Construction and OSHA Alignment: ERM3-900/48 uses a heavy-gauge steel frame and bar grating floor, 42″ high guardrails, 6″ toeboards, perforated side panels, a positive-latching access gate, and a full-perimeter inner grab rail to meet OSHA 1926.502 fall-protection practices.
Dedicated Base-Attached Four-Leg Sling With Safety Leg: A four-leg 1/2″ 6×36 IWRC wire rope sling assembly attached to the base and secured to a master link, plus a safety leg to the load line above the overhaul ball, provides stable hoisting and minimizes tipping, consistent with OSHA 1926.1431 for suspended personnel platforms.
125% Proof-Load Tested With Detachable Test Weight: Each ERM3-900/48 is proof-tested at 1,125 lb (125% of its 900 lb rated capacity) and comes with Lifting Technologies’ unique detachable Test Weight System, along with proof-load certificates and inspection documentation.
Durable Powder-Coat Finish and Custom Options: Professional round man baskets are powder-coat finished in solid red with yellow test weights for impact and corrosion resistance; custom colors and configurations are available, and overhead protection can be specified by moving to the ERMO3-900/48 overhead model.
Frequently Asked Questions
What are the ERM3-900/48 dimensions and ratings?
The ERM3-900/48 has a 48" diameter, 900 lb maximum rated load capacity, a 1,125 lb test weight, and a 350 lb basket weight.
How many people can ERM3-900/48 carry?
ERM3-900/48 is intended for three occupants, provided the combined weight of personnel, tools, materials, and PPE does not exceed the 900 lb rated capacity.
Does ERM3-900/48 have overhead protection?
No. ERM3-900/48 is an open-top Round Professional model; the corresponding overhead-protected model is ERMO3-900/48, which adds an overhead frame and perforated skylights and has a higher basket weight.
Which OSHA standards does ERM3-900/48 support?
ERM3-900/48 is designed to meet OSHA 29 CFR 1926.1431 requirements for hoisting personnel and OSHA 1926.502 Subpart M for fall protection, including guardrails, toeboards, side enclosure, and anchor points, with proof-load testing at 125% of rated capacity.
What is included with an ERM3-900/48 order?
Typical Professional round packages include the round platform with guardrails and toeboards, base-attached four-leg sling assembly with safety leg, detachable Test Weight System, data plate, Use and Safety Handbook/training materials, proof-load test certificate, and inspection checklist.
When would ERM3-900/48 be chosen over ERMO3-900/48 or rectangular baskets?
ERM3-900/48 is chosen when a three-person crew needs a compact round platform without overhead protection in areas with controlled overhead hazards; ERMO3-900/48 is preferred when overhead protection is required, and rectangular REC/RECO models are used when linear work zones along beams or edges are the priority.
Find Out More
For other Round Professional baskets without overhead protection, see ERM4-1200/60 (slings) in the Round Professional Man Basket table.
For Round Professional baskets with overhead protection, see ERM1-250/19, ERM1-300/32, ERM2-600/38, ERMO3-900/48, and ERMO4-1200/60.
For heavier-duty Premier round models and additional options, see the Premier Man Basket (Round) page.