Toro Dingo 36 x 4 In. Combo Chain for Trencher

Description

Meet demanding underground utility specs with the Toro Dingo Trencher Combo Chain 22487. This heavy chain mixes cup teeth and carbide rock teeth to trench through hard soils. It cuts four inches wide and thirty-six inches deep. While versatile across mixed dirt, running it in pure soft sand causes cup teeth to scoop empty air.

Built on heavy-pitch welded steel roller chain links, this digging assembly resists tensile stretching under high impact. The cutting teeth alternate between heat-treated carbon steel cup cutters and carbide-tipped shark teeth welded to heavy steel cutter stations. Case-hardened alloy steel connector pins hold chain sections together under extreme load. The bare chain weighs 68 lbs unboxed, sized to fit standard thirty-six-inch Toro Dingo trencher booms with four-inch cutting width.

Key Features of Toro 22487

Utility contractors buy Toro 22487 combo chains to trench through mixed rocky ground without wasting time swapping digging chains between jobs. This commercial trencher chain balances aggressive soil scooping with solid rock crushing capability on tough jobsites.

• Alternating cup and carbide teeth chew through tough clay, tree roots, and embedded cobbles.
• Four-inch trench cut width matches conduit lines to reduce spoil and backfill labor.
• Heavy-duty welded steel roller links resist elongation under severe trench downfeed pressure.
• Carbide-tipped teeth shatter stones before standard cup teeth scoop loose soil upward.
• High-tensile steel connector pins allow rapid chain repair or field link adjustments.
• Heat-treated steel cutter stations resist abrasive friction in dense sandy gravel subsoils.
• Direct factory fit matches Toro Dingo thirty-six-inch boom sprockets without modification.

Tensile Strength Chain Wear Verification

Bench tensile pull tests subjected this trencher chain to 18,000 lbs of ultimate proof load without link fracture or pin shear. Carbide tip brazing showed zero detachment after thirty hours of simulated trenching through abrasive river rock and hardpan clay. Roller pitch stretch measured under 0.05 inches across thirty links, proving high fatigue resistance under heavy cyclic shock. The cup teeth retained their gouging edge, clearing seventy percent of loose spoil per chain rotation without binding.

Subsoil Limitations Chain Maintenance Rules

Running this combo chain requires maintaining proper hydraulic grease tension on your trencher boom cylinder to prevent sprocket jumps. Do not buy this fifty-fifty combo chain for solid limestone bedrock trenching, unbroken granite ledges, or deep sixty-inch highway utility excavation cuts.

• Check chain sag before each shift, maintaining about two inches of measured slack underneath the boom.
• Inspect carbide cutter teeth each week for impact fracture, dull edges, or missing brazed tips.
• Wash packed mud and stone chips out of roller links with clean water after shifts.

Toro Chain Replacement Warranty Details

Toro covers this commercial combo chain with a 1-Year warranty against manufacturing defects in steel roller link fabrication. The factory shipping carton includes the assembled thirty-six by four-inch combo chain, master connector pin with lock clip, safety instruction tag, and chain tensioning specification guide.