Every forklift carries a small plate that answers the question operators argue about most: how much this truck can actually lift, with which attachment, on which tires. That plate is the data plate, also called the nameplate or capacity plate, and it is the only authoritative record of what a specific truck is built to do. It is also the field most people misread, because the big number on it is only true at the load center printed next to it. In the US the topic draws steady search traffic, around 320 monthly searches for “forklift data plate” and about 70 for “forklift load capacity”, with a commercially significant CPC on the plate term (DataForSEO, 2026-08-27), and almost no source explains the plate field by field. This guide does, and it sells no forklifts.
What the plate is, and what OSHA says about it
The data plate is the manufacturer’s own statement of a specific truck’s specifications, tied to that truck’s serial number rather than to a model family in general. OSHA’s powered industrial truck standard makes the plate a compliance item in three separate places. First, 29 CFR 1910.178(a)(6) states that the user shall see that all nameplates and markings are in place and maintained in a legible condition. Second, 1910.178(a)(4) says that modifications or additions which affect capacity and safe operation shall not be performed without the manufacturer’s prior written approval, and that the capacity, operation, and maintenance plates shall be changed accordingly. Third, 1910.178(a)(5) requires that a truck fitted with front-end attachments other than factory-installed ones be marked to identify the attachments and show the approximate weight of the truck and attachment combination at maximum elevation with the load centered. The OSHA regulations guide on this site walks through the whole powered industrial truck standard, and the inspection checklist is where a missing or illegible plate gets caught as a daily defect.
The incorporated design standard, ANSI/ITSDF B56.1, specifies what the nameplate carries: the truck model and serial number, truck weight, a designation of compliance with the safety standard, a type designation showing conformance with listings such as those of Underwriters Laboratories or Factory Mutual, and the capacity (OSHA eTool, nameplate, 2026-08-27). Manufacturers routinely add more, including fuel or power type, the load center and maximum height the capacity applies to, approved attachments with the truck-plus-attachment weight, and on most counterbalanced trucks a tire size and type.
The capacity line is not a flat number
The capacity figure is a net rating at a stated load center. OSHA’s own eTool example is a truck rated at 5,000 lb with a 24 inch load center to a maximum height of 130 inches; with a sideshifter attachment the same truck is rated at 4,500 lb, and the truck itself weighs about 8,680 lb (OSHA eTool, nameplate, 2026-08-27). That derating is the point almost everyone skips: an attachment generally lowers the capacity, and so does a load whose center of gravity sits outside the stated load center. A long, irregular, or oddly-stacked load can exceed the truck’s real capacity even when it weighs less than the plate number, because the plate assumes the load’s center of gravity is exactly where the load center line says it is. This is the same geometry the tipping guide covers through the stability triangle: capacity and tip-over are the same physics viewed from two ends. If you load trucks near their limit, read that guide and the load center discussion in the attachments guide before you trust the big number.
The lines everyone skips
Two fields get less attention than they deserve. The first is the tire specification line. The rated capacity is measured on a specific tire size and type, and the aftermarket guidance is explicit that the tire line is where a correct replacement order starts, and that swapping to a different tire can change the load capacity the truck actually delivers (Forklift Tire Company, 2026-08-27). The forklift tires guide covers how tire type and condition affect stability and floor load. The second is truck weight, which matters for floor loading, dock plates, and trailer floors: a loaded forklift is often the heaviest thing that crosses them, and electric truck nameplates under B56.1 show the weight without the battery plus the minimum and maximum battery service weights, because the battery is part of the counterweight (Forklift Tire Company, 2026-08-27).
Missing, faded, or modified plates
A missing or unreadable data plate is not a cosmetic problem. It removes the operator’s only authoritative reference for what the truck can safely lift, and under 1910.178(p)(1) a truck found defective or in any way unsafe comes out of service until it is restored to safe operating condition. Plates are replaced through the dealer, not re-created from memory, because the plate is tied to the serial number. If the truck has been modified, the re-rated plate must come with the manufacturer’s written approval of the modification. Add the plate check to the daily routine on the inspection checklist, and when you buy or rent, verify the plate matches the configuration you are actually getting; the buying guide covers how capacity and truck class shape which safety systems fit the fleet.
The data plate is the starting point, not the whole program. A correctly rated truck still depends on load discipline, stability awareness, and separating pedestrians from the travel path. Score your own operation first with the Risk Scorer, which takes about two minutes, compare your exposure to your state’s injury series, and review the engineered controls on the systems index, from camera systems to pedestrian detection, with every figure here derived as described on the methodology page. If you are ready to compare vendors, the quote form sends the same scope to every supplier, and every estimate on this site is a decision aid, not a compliance verdict.