Stewart-Amos Mechanical Broom Sweeper
Starfire S-4XXL
Extra heavy-duty dual-engine mechanical broom with 4.5 yd³ hopper. 33,000 lb GVWR — CDL required. Purpose-built for the most demanding continuous-duty sweeping operations.
Overview
Built for the way Texas crews work
The Starfire S-4XXL is Stewart-Amos' largest 4.5 cubic yard Starfire mechanical broom package, built for crews that need a conventional-chassis sweeper with extra GVWR for long, heavy, continuous-duty sweeping.
It keeps the Starfire dual-engine mechanical broom architecture, high-dump hopper, 330 gallon water system, and 11 ft sweeping path, then places it on a 33,000 lb GVWR chassis. That heavier chassis moves the S-4XXL into CDL territory, but gives municipalities and contractors more room for demanding chip seal, millings, highway, and industrial cleanup work.
33,000 lb GVWR conventional chassis for heavy continuous-duty sweeping.
4.5 cubic yard volumetric debris hopper with 44 inch dump door reach.
11 ft maximum sweeping path with 54 inch standard gutter brooms.
Variable dump height from 17 inches to 144 inches, chassis dependent.
330 gallon water system for front spray bar, main broom, and gutter broom dust control.
SCAQMD PM-10 Rule 1186 certified.
Key Specs
- Model
- S-4XXL
- Sweeping path
- 11 ft maximum
- Chassis GVWR
- 33,000 lb
- CDL required
- Yes
- Hopper capacity
- 4.5 cu yd volumetric
- Hydraulic power train
- Auxiliary engine
- Dump height
- 17 in to 144 in (12 ft)
- Gutter broom size
- 54 in standard, 42 in optional
- Water capacity
- 330 gal
- Elevator
- 10 flights
- Dump door reach
- 44 in
- Certification
- SCAQMD PM-10 Rule 1186 certified
Field Details
See the machine at work
Close-up photos and jobsite views show how the machine is built, configured, serviced, and used beyond the spec sheet.
CDL chassis capacity
The S-4XXL is the heavier 4.5 yd³ Starfire configuration, with a 33,000 lb GVWR chassis for demanding routes and cleanup work.
High-dump hopper
The variable high-dump hopper reaches from 17 inches up to 144 inches, depending on chassis, for loading containers and debris trucks.
Millings and chip seal cleanup
An 11 ft sweeping path, 54 inch gutter brooms, and 10-flight elevator are built for heavier sweeping applications.
Maintenance Videos
Factory Starfire Training
These Stewart-Amos training videos cover the core broom and sensor adjustments that keep a Starfire sweeper performing correctly in the field.
Gutter broom maintenance, adjustments, and operation
Factory Starfire Series training video covering gutter broom setup and maintenance.
Main broom maintenance, adjustments, and operation
Factory Starfire Series training video for main broom operation and adjustment.
Proximity sensor adjustments
Factory Starfire Series training video covering proximity sensor adjustment.
Technical Specifications
Starfire S-4XXL Spec Details
Specifications below are pulled from manufacturer materials and Closner product research. Final build details can change by chassis, configuration, and option package.
Production and chassis
- Model number
- S-4XXL
- Sweeping path
- 11 ft maximum
- Chassis GVWR
- 33,000 lb
- CDL required
- Yes
- Hopper capacity
- 4.5 cu yd volumetric
- Dump height
- 17 in to 144 in (12 ft), chassis dependent
- Dump door reach
- 44 in
Sweeping and dust control
- Hydraulic power train
- Auxiliary engine
- Gutter broom size
- 54 in standard, 42 in optional
- Water capacity
- 330 gal
- Elevator
- 10 flights
- PM-10 certification
- SCAQMD Rule 1186 certified
Features
Starfire S-4XXL advantages
33,000 lb CDL chassis
The S-4XXL is the heavier Starfire 4.5 yard configuration for buyers who want more chassis capacity than the non-CDL S-4XL platform.
4.5 yd³ high-dump hopper
A large volumetric hopper and variable high-dump range help crews load into trucks or containers and keep moving through production sweeping work.
10-flight elevator
The S-4XXL table lists a 10-flight elevator package for feeding heavy debris into the hopper during road milling, chip seal, and cleanup work.
330 gallon water system
Onboard water supports dust suppression across the front bar, main broom, and gutter broom zones for drier routes and construction cleanup.
Auxiliary-engine hydraulic drive
The sweeper package runs from an auxiliary engine hydraulic power train, separating sweeper work from the truck chassis drive system.
Operator camera visibility
A camera system helps the operator monitor the broom and rear work zones during sweeping and backing.
Gallery
Starfire S-4XXL Photos
Factory model photos and system views for a closer look at the machine.
FAQ
Common Starfire S-4XXL Questions
Does the Starfire S-4XXL require a CDL?
Yes. Stewart-Amos lists the S-4XXL with a 33,000 lb GVWR chassis and marks CDL required as yes in the published specifications.
How is the S-4XXL different from the S-4XL?
Both are 4.5 cubic yard Starfire mechanical broom sweepers, but the S-4XXL uses a 33,000 lb GVWR CDL chassis, while the S-4XL is positioned around a 26,000 lb non-CDL chassis.
What type of work is the S-4XXL best suited for?
The S-4XXL is built for heavy continuous-duty sweeping such as chip seal cleanup, road millings, highway sweeping, municipal street sweeping, industrial yards, and construction site cleanup.
More Stewart-Amos Models
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