HARVESTORE BRANDED HOOKS

There are two styles of hooks. Standard Model 74 hooks were used prior to the introduction of the Goliath II unloader, and offer durability and value. Chisel Tip hooks are 20% longer and 30% wider than the Model 74 versions, and use a hardened carbon steel pusher bar for more aggressive digging and conveying action. All are forged and welded (not cast) in a welding fixture for proper placement.

A full set of hooks is critical for efficient unloader operation. Equally important is the location and sequence of the hooks. Contact us to help you select the hooks best suited to your operation.

CUTTER ARM OUTER SPROCKET ASSEMBLY

A sprocket is made of high quality, tractor-class ductile iron. Teeth are induction hardened for a uniform, consistent surface hardness. The outer case is hardened to a specific depth to create resistance to micro fractures and embrittlement. All raised surfaces are machined smooth to reduce wear and increase service life. In addition to using conventional oil seals to keep out dust and dirt, these sprocket assemblies also use mechanical Labyrinth Seals machined into the sprocket body. These seals “step” into both top and bottom retainers to create 90-degree turns to exclude foreign matter while prolonging grease and bearing life.

ARM SUPPORT WHEELS

THESE HEAVY-DUTY ARM SUPPORT WHEELS ARE DESIGNED TO COMPLEMENT A NEW GENERATION OF HIGH-TECH FLOOR COVERINGS. MADE WITH A NEW WEAR-RESISTANT MATERIAL, THE ARM SUPPORT WHEELS HAVE 33% GREATER WIDTH THAN PREVIOUS VERSIONS, AND AN INCREASED DEPTH OF HARDNESS FOR LONGER SERVICE LIFE.

PAWLS

Often called the “workhorses” of the chain unloader, pawls must mate exactly with the unloader’s bidirectional ratchet wheel for predictable arm advance and consistent feed delivery. They are manufactured with the same high quality steel and fabrication processes used in Harvestore Branded gears. Attention to details that enhance strength and precision leads to more consistent delivery, less wear and longer part life

GEARS, SHAFTS, AND PINIONS

These gears, shafts and pinions are all fabricated from heat treatable, high quality steel. Gears are machined twice to meet American Gear Manufacturer’s Association tolerances. The first machining comes before each unit is thoroughly hardened, and before the teeth are case hardened, to create much harder, more durable contact surfaces. Parts are then machined a second time, and ground to final tolerances. Because of the attention to strict tolerances and smooth wear surfaces, friction is reduced, extending the overall life of the part.

CUTTER CHAIN ARM GUIDE

The chain guide is designed to reduce cutter arm wear. These guides are fabricated in a welding fixture so that all angles and dimensions are precise and accurately maintained. Made of abrasion resistant steel throughout, they maintain alignment and resist excess wear for a longer period of time than those made of lesser quality steel. Corners are chamfered to help the chain slide smoothly, a feature that also extends the life of the chain and cutter arm.

CUTTER CHAINS

Cutter chains are available in two styles: cutter chains with alloy steel bushings and SS cutter chains with stainless steel bushings. Each version features three components: sidebars, bushings and pins. Each component has unique metallurgical requirements for balanced durability and strength.