40HP Shear Bolt Omni Agricultural Gearbox Fit for Worksaver, Hawkline, International, Wac, Big Bee, Lmc, King Kutter, Midwest, Servis, Bush Hog
Product Description
40 HP Shear Bolt Agricultural Transmission Benefits
Critical Overload Protection: This is the primary benefit of the shear bolt. When the torque load on the transmission or implement exceeds a preset safety limit, the shear bolt breaks (shears off). This immediately cuts the power transmission from the tractor to the implement, preventing:
Transmission Damage: Protects internal gears, shafts and bearings from excessive stress.
Implement Damage: Protects the working parts of the implement (e.g., rotating blades, augers) from breaking.
Tractor PTO Shaft Damage: Prevents the tractor PTO shaft or its internal driveline components from twisting or breaking.
Increased Safety: Reduces the risk of catastrophic mechanical failure that could pose a safety hazard to the operator or bystanders.
Cost-Effective Protection: The shear bolt is a simple, economical and easily replaceable sacrificial part. Replacing a damaged shear bolt is much less expensive and time-consuming than repairing or replacing a damaged transmission, implement or tractor power take-off (PTO).
Reliable and Predictable Failure Point: Unlike friction clutches, which can slip and lose their protective ability over time if not properly maintained, shear bolts provide a clear and defined failure point when overloaded, ensuring continuous protection.
Best Power Match (40HP): The 40HP rating indicates that it is designed for farm implements typically pulled by small to medium tractors, ensuring efficient power transmission without selecting a transmission that is too large or too small for common applications in this power range.
Durability and Ruggedness: Like other agricultural transmissions, these transmissions are built to withstand the rigors of farm use, including vibration, shock, dust, dirt and moisture.
- RC 30 Series Gearbox, 40hp Rated, 1-3/8" SB input, 1-1/2" X 12 Spline Output. 1:1.47 Ratio Replace your broken rotary cutter gearbox with this replacement unit.
- Why rebuild when you can replace at such a low price?
- These gearboxes have been used by Worksaver, HawkLine, International, WAC, Big Bee, LMC, King Kutter, Midwest, Servis, Bush Hog, some Howse and many more.
- Note: Actual Gearbox may have a rounded housing or square as shown, depending on current availability, all internal parts are interchangeable and specifications for both boxes are identical! This gearbox features a 1:1.47 Speed Up gear ratio for use on 5' and larger diameter rotary cutters. Industry standard 1-3/8" smooth diameter input shaft with 1/2" shear bolt hole and retaining ring groove and 1.57" diameter 12 tapered spline output shaft allow fitment to most light, standard and medium duty rotary cutters. Each gearbox features high speed ball bearing units and heat treated gears and shafts to ensure long life. Four bolt mounting matches industry standards. Each gearbox includes blade carrier mounting nut and cotter pin. Gearboxes are shipped dry and require 16 ounces of 80-90W gearlube or equivalent.
- Disclaimer: Any and all Original Equipment Manufacturer's (OEM) tradenames, trademarks, drawings, colors, descriptive information and part numbers are used for parts identification purposes only, and ever-power is in no way implying that any specific parts are OEM parts. Further, any use of the OEM's tradenames, trademarks, drawings or part numbers by DN is designed only to aid DN's customers, in obtaining the proper DN part or component which will replace the OEM's part.
| Material |
Housing/QT450 |
| Gear/20CrMoTi; Shaft/ High-strength alloy steel |
| Ratio |
1:1.92~1:1.47 |
| Weight |
16 kg |
| Input Speed |
540 RPM |
| Horse Power |
30~40 Hp |
| Input Torque |
389~520 N·M |
| Output Torque |
203~354 N·M |
| Center Distance |
182.6 mm |
| System |
ISO9001 |
| Packing |
Plastic bag + PE foam + Wooden case + Metal strap |
40 HP Shear Bolt Agricultural Transmission Applications
Rotary Tillers/Rotary Tillers (Small to Medium): When tilling the soil, you may encounter rocks, tree roots, or other hidden obstacles. Shear bolts protect the transmission and teeth from damage when such objects strike.
Rotary Mowers/Brush Mowers (Small to Medium): When mowing grass or brush, the blades may strike stumps, rocks, or fence posts. Shear bolts are critical to protecting the transmission and blades from severe impacts.
Diggers: The auger may become stuck on rocks, tree roots, or compacted soil. Shear bolts prevent damage to the auger, transmission, and tractor PTO.
Fertilizer Spreaders (Rotary Disc): Shear bolts protect the drive components if foreign objects enter the fertilizer spreading mechanism or a blockage occurs.
Snowblower (tractor mounted, smaller): The auger or impeller may hit ice, rocks or other debris. Shear bolts are a critical safety feature.
Precision mower: Similar to rotary mowers, but for a more neatly cut lawn, shear bolts provide protection from accidental impacts.
Small forage harvester (specific components): In some drivetrains, shear bolts provide protection if a jam occurs.
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