Forklift Forks

Fork Extensions Buying Guide

Match the mount before anything else. Forks come in two mounting families that do not interchange, so this is the first fork in the road. Hook-type forks, the ITA standard, hang on a carriage using opposing hooks that engage an upper and lower fork bar, and a latch pins them in place. That is what most sit-down warehouse forklifts use. Shaft-mounted forks are a different animal: they slide onto round shafts on a pin-type carriage, which is how telehandlers and rough-terrain forklifts hold their forks. A hook fork will not fit a shaft carriage and vice versa. The Star Industries range covers both, but the shaft-mounted line is the deeper one, with sets cut for specific machine families. Before you shop by length or capacity, confirm which carriage your truck has, because it decides the entire shortlist.

ITA hook-type forks: your carriage class picks the fit. ITA forks are grouped by class, and the class is simply the carriage height, the vertical distance between the two fork bars. Class 2 is a 16 inch carriage and generally covers trucks from about 1,500 to 5,500 lb. Class 3 is a 20 inch carriage for roughly 5,500 to 11,000 lb machines, and Class 4 is a 25 inch carriage for the heaviest lift trucks above that. Match the class to your carriage and the fork hooks drop straight on. This collection carries pallet forks in Class 2, 3, and 4, plus block forks in Class 2 and 3. The naming matters at checkout: pallet forks are sold as a pair, while block forks are priced each, so a two-fork job means ordering two block forks. Pallet forks are the general-purpose blade for pallets and crates; block forks are shorter, thicker units built for handling brick, block, and dense unit loads close to the carriage.

Shaft-mounted forks: match the machine, then the shafts. The telehandler side is where fit gets specific. These shaft-mounted forks suit pin-type carriages on telehandlers and rough-terrain forklifts, and Star Industries cuts distinct sets for named machine families: Skytrak, Lull, and JLG models, CAT TH-series units, Genie and Terex, Skyjack and Ingersoll Rand VR, Gehl RS and DL series, JCB, Gradall, and Xtreme reach machines. Each listing calls out the shaft diameter it fits, which ranges from about 2 inches up to 2.75 inches depending on the machine, so read the title against your carriage before you buy. Within a set you choose the fork dimensions, written as thickness by width by length by carriage reference, for example 2 by 5 by 48 by 28. Blades run from a compact single up to 96 inch pairs for long or bulky loads. Buying by machine name is the safe path here, but confirm the shaft size on your own carriage, since a family can span more than one shaft diameter.

Size the blade: thickness, width, length, and load center. Once the mount is settled, the blade dimensions do the rest of the work. Length should suit the load, not exceed it by much, because a fork far longer than the pallet wastes reach and pushes the load center out. Load center is the distance from the fork face to the center of gravity of the load, and a forklift is rated at a specific load center, commonly 24 inches on trucks up to 30,000 lb. Put a heavy load farther out on longer forks and the safe capacity drops, so longer is not automatically better. Thickness and width set the strength and the bearing surface: thicker sections carry more, wider blades spread the load and resist point damage. For pallet work, match the fork spacing and length to your pallet openings; for tall or dense unit loads, the shorter, stouter block fork keeps the weight close to the mast where the truck is most stable.

Extensions and over-the-bucket tines: adding reach to what you own. Two products here add fork capability without a new carriage. Fork extensions slide over your existing blades to reach deeper pallets or double-length loads, and they are the quick answer when a normal fork comes up short. There is a firm rule to respect: under OSHA and ANSI B56.1, a fork extension must not exceed 150 percent of the length of the supporting fork underneath it, so 42 inch forks accept extensions up to 63 inches and no more. The extension also has to seat fully and lock so it cannot walk off the blade. Over-the-bucket fork tines solve a different problem. The 42 and 48 inch complete sets clamp over a loader or tractor bucket, rated to 5,500 lb, and turn a machine that only has a bucket into one that can carry pallets. They earn their place on a farm or job site where a dedicated forklift is not on hand but a loader always is.

Capacity, the data plate, and inspection. Any fork you hang has to work inside the truck's rated capacity, and attachments change the math. OSHA 1910.178 requires the machine to carry a data plate that states the capacity, and when an attachment or non-standard fork is added, the employer needs updated capacity information from the manufacturer so the operator knows the real, usually lower, limit. Never read the original plate and assume it still holds after changing the forks. Inspection is the other habit that keeps forks in service safely. Check blades before use for cracks at the heel, where fatigue concentrates, and for bends, wear on the top face, and a set that no longer sits level. Measure heel thickness periodically, because a fork worn more than about 10 percent below its original thickness loses a disproportionate share of its rated capacity and should be retired. Keep the pair matched in length and height so the load rides flat, and confirm the latches or shaft collars hold the forks locked before every lift.