When you’re working brush or maintaining pastures with your rotary cutter, the last thing you want is a blade hub coming loose. This castle nut threads onto your gearbox output shaft and locks the blade hub securely in place, so you can focus on the job instead of worrying about loose hardware.
What You’re Getting
- Fine thread design for extra holding power under heavy cutting loads
- Castle slots allow for cotter pin safety retention to prevent backing off
- 2-inch base provides solid bearing surface against the blade hub
- 1-inch threaded shaft fits standard rotary cutter gearbox output shafts
- Heavy-duty construction handles the shock and vibration of brush cutting
Built for Real Farm Work
This nut works with various rotary cutter gearboxes including 75 HP units that power everything from pasture maintenance to roadside mowing. Whether you’re clearing fence rows, maintaining food plots, or cutting thick brush, this is the same type of fastener that keeps commercial cutters running day after day.
Made to Last
Built to precise specifications for agricultural equipment that operates in challenging environments, with high-tensile steel construction that resists wear and fatigue from repeated loading cycles. The fine thread pitch gives you better holding power when things get rough, and the castle design means you can always lock it down with a cotter pin.
Installation Notes
Thread this nut onto the gearbox output shaft and tighten to your gearbox manufacturer’s torque specs. Always install a cotter pin through the castle slots for safety retention. If you’re replacing an old nut that’s been on there for years, clean the threads with a wire brush first—it’ll go on much easier and seat properly.
