Sutphen

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Sutphen Corporation is an American maker of emergency services vehicles. It was founded in 1890 by C.H. Sutphen and is based in Amlin, Ohio. The company operates five plants in Amlin, Dublin, Hilliard, and Springfield, Ohio, and Lake Ariel, Pennsylvania. Sutphen builds fire and emergency vehicles on its own chassis, including engines, ladders, and rescue trucks, and also provides bodies for commercial chassis.

Aerials and ladder trucks
- Sutphen makes mid-mount aerials in two styles: tower ladders with a bucket (open frame) and ladder towers without a bucket (closed box). They also offer industrial aerials.
- In 2016, Sutphen debuted its first rear-mount aerial, the SLR 75. In 2017, a 108-foot model was previewed.
- The company experimented with tillers in the 1990s, including a tiller-tower concept that never went into production. Today’s aerials are aluminum and use Huck bolts, with custom hydraulics.
- Sutphen introduced its tower ladder in 1964 on a Ford C chassis; later models used larger chassis like Duplex and GMC. Classic sizes were 65, 75, and 85 feet (three boom sections). A 100-foot model with four sections and a Magnum 110-foot model with five sections followed. The SPH-100, introduced in 2004, uses five boom sections and a larger bucket; ground ladders are stored at the rear, with side ladders as an option.
- On February 25, 2021, Sutphen announced a return to tractor-drawn aerials (TDAs or tillers). A preview video in March 2022 indicated the first new TDA would appear at FDIC International, with a follow-up SLTDA 105 video released in April 2022.

Models, engines, and pumps
- Sutphen builds mid-mount aerial platforms using engines from Cummins, Caterpillar, and Detroit Diesel, with Allison transmissions, and Hale and Waterous pumps.
- Aerial model families include: SL (open framework booms for climbing), SA (enclosed box booms), and SLR (rear-mounted).
- The company also makes two pumpers, the Guardian and Shield series, which are built on Monarch chassis and cab.
- Heavy Rescue Trucks are designed for 6 to 10 people and carry generators, air tanks, lighting, ladders, pike poles, crowbars, dive gear, and other tools for heavy rescue, HazMat, urban search and rescue, or mobile command applications.
- Sutphen’s heavier chassis lines include the Ambassador, Imperial, Monarch, and the S Series.