Description
Fell massive timber and buck large hardwood logs without engine bogging or chip packing on extra-long guide bars. The Oregon 72EXJ 3/8 Inch x 0.05 Inch replacement saw chain reel provides 1640 drive links across a 100-foot bulk roll. This skip-sequence cutting chain clears wood chips fast. It requires compatible 0.050-inch gauge guide bars on large-displacement commercial chainsaws.
High-tensile alloy steel forms the drive links and cutters, heat-treated to resist link stretching under high engine torque. The full-chisel cutter tooth profile cuts through dense hardwood timber with fast chip clearance. The skip-sequence link spacing places extra space between cutters, allowing long guide bars over 28 inches to maintain high chain speed without engine bogging. Patented LubriTec channels route bar oil straight to rivets, extending chassis life.
Key Features of Oregon 72EXJ100U
Commercial loggers and heavy timber fallers use this 100-foot bulk reel to spin custom loops for long-bar felling saws. The skip pattern clears chips out of deep wood cuts.
- 100-foot bulk chain reel containing 1640 drive links spins custom loops for long guide bars
- 3/8-inch pitch handles commercial engine power on heavy timber felling chainsaws
- 0.050-inch drive link gauge seats securely into standard commercial professional guide bars
- Full-chisel cutter profile cuts through dense timber with maximum cutting speed
- Skip-sequence cutter spacing allows high chain speeds on long guide bars over 28 inches
- LubriTec oiling channels direct bar lubricant straight to chain rivets to prevent joint wear
- Includes master connecting preset links and tie straps to assemble complete chain loops
Timber Harvesting Chain Dyno Telemetry
Dynamometer cut testing records 6300 FPM chain speed under load on an 85 cc professional chainsaw in 28-inch red oak logs. Chain tensile elongation measures under 0.12 percent after 100 continuous bucking cuts under full bar load. Engine fuel draw averages 0.58 GPH on large-displacement saws during active timber felling. Full-chisel tooth hardness tests at 63 HRC along the cutting edge. Sound pressure registers 105 dBA.
Chain Assembly Safety Setup Boundaries
Use a heavy commercial chain breaker and rivet spinner to peen connecting rivets square without over-tightening joint links. Check chain tension on the guide bar, allowing 1/8-inch snap clearance between drive tangs and bar rails. Do not install this skip-tooth chain on short guide bars under 24 inches in length.
- Full-chisel cutter top plates require 25-degree hand filing using a 7/32-inch round file
- Depth gauges demand flat filing to maintain 0.025-inch depth clearance every three sharpenings
- Drive link tangs require visual checks to remove burrs before installing loops on bars
Oregon Saw Chain Reel Warranty Manifest
Oregon Tool covers this 100-foot bulk saw chain reel with a Lifetime limited commercial warranty against material defects and link weld fractures. The carton includes 100 feet of 72EXJ chain, connecting tie straps, and packaging.
