Thirty-seven feet. Altec build quality. The utility line worker's workhorse.
Altec AT37G 37-ft articulating aerial bucket truck. 500 lb bucket capacity, 21 ft horizontal reach, PTO drive. Mounts on Class 3-5 chassis. ANSI A92.2 rated. Altec factory service network.
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| Model | AT37G |
| Rotation | 370° upper boom rotation |
| Boom Type | Articulating, 2-section |
| Outriggers | Hydraulic, 4-point with pads |
| Manufacturer | Altec Industries |
| Power Source | Truck PTO (hydraulic) |
| Certifications | ANSI/SIA A92.2, CSA C225 |
| Vertical Reach | 37 ft (11.3 m) |
| Working Height | 43 ft (13.1 m) |
| Bucket Capacity | 500 lbs (227 kg) |
| Chassis Requirement | Class 3, 4, or 5 commercial truck |
| Horizontal Outreach | 21 ft (6.4 m) |
| Boom Assembly Weight | 3,800 lbs (1,724 kg) |
Multi-angle views of the Altec AT37G Articulating Aerial Bucket Truck. Click any image to zoom.
Watch the Altec AT37G Articulating Aerial Bucket Truck in action — full installation and operation demo.
Aerial bucket trucks use a truck-mounted hydraulic boom and articulating system to position a work bucket at height. The PTO-driven system draws power from the truck engine — boom operation requires the truck engine to be running.
Before operating the boom, engage the Power Take-Off (PTO) via the in-cab switch or lever. The PTO connects the truck's transmission output to the hydraulic pump. The truck must be in neutral (auto) or PTO gear (manual) before PTO engagement.
Deploy all four outriggers before raising the boom. Place outrigger pads under each foot on soft or uneven ground. Confirm all four indicator lights show "set" (or physically verify leveling) before raising the boom above horizontal.
Both platform (bucket) controls and base controls operate the boom. Platform controls replicate all boom functions with the addition of a platform rotation control. The base controls include an emergency override for all boom functions in the event of power loss in the bucket.
A manual hydraulic override at the base of the boom lowers the platform in the event of engine failure or hydraulic system failure. The operator in the bucket should wear a full-body harness with a lanyard connected to the bucket's D-ring anchor at all times.
The boom cannot be raised above horizontal unless all four outriggers show confirmed ground contact. An electronic sensor in each outrigger pad signals the control system. A boom raised without full outrigger deployment is the primary cause of tip-overs in aerial truck incidents.
Insulated bucket trucks require annual dielectric testing per ANSI/SIA A92.2. The fiberglass upper boom and bucket are tested to their full rated voltage (40 kV for Class E). A test port on the unit allows in-field testing without removing components.
A certified D-ring fall arrest anchor is welded into the bucket structure. All operators in the bucket must wear a full-body harness with the lanyard connected to this anchor at all times — OSHA 1910.67 requirement for aerial devices.
A manual hydraulic override at the base of the boom lowers the platform to ground level independently of all electronic controls and truck power. Location and operation are marked clearly on the unit. Test this system at every pre-shift inspection.
AT37G vs. AT40G: the AT37G is the right call when the work is below 37 feet and CDL licensing is a concern — the lighter boom allows mounting on a Class 3 or 4 chassis that stays under 26,001 GVWR (no CDL required), while the heavier 40-foot boom typically requires a Class 5 or 6 chassis that pushes the truck over CDL weight thresholds. For utility companies with licensed drivers, the AT40G provides 3 additional feet of reach. For tree service companies and municipalities prioritizing non-CDL driver flexibility, the AT37G is the business-practical choice.
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