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Shear Bolt Gearbox 35-45HP by Rancher Supply - Rotary Replacement Kit for Omni Gear RC30 with 5 Extra Shear Bolts, Lubricant Not Included

  • Based on 173 reviews
Condition: New
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$199.99 Why this price?
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Availability: In Stock.
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Arrives Friday, May 15
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Features

  • Durable Protection: Fits most light duty rotary cutter machines that require shear pin protection and includes 5 replacement shear bolts to add to your rotary kit.
  • Fits Models: RD5, RD6, RZ160, RZ60 Gearbox Assembly P/N 00786192. Razorback Series BH4, BH5, BH6, BH4-2, BH5-2, BH6-2. BMB 1080, BMB 10300, Hardee C1378, Mohawek 14-500, Rhino 0711050100, Rhino 71105, Omni 250123, Omni 250001, SE Big Ox 1970, Sidewinder 26272, and Others
  • 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.
  • 1:1.47 Ratio for use on 5' and larger diameter 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 90W or 85w140 gearlube or equivalent.

Description

In today’s world, every farmer or rancher needs the right tool to get the job done – and most importantly, they need a toolkit that contains high-quality parts and ranch tools specifically built to last. Here at Rancher Supply, we offer a wide range of farm equipment and parts that the everyday farmer can use to accomplish a wide range of jobs, projects, and tasks while out on their ranch. We’re excited to show you our brand new gearbox that comes to you courtesy of Rancher Supply – the home for ranch tools and farming equipment. 40 Horse Power Makes All The Difference Our powerful new gearbox is the perfect shear bolt replacement for a wide range of Borg Warner, Auburn, Omni, and Patico light duty rotary cutter machines. Loaded with up to 40HP, this gearbox is specifically designed to give you flexibility, efficiency, and accuracy with every cut. Featuring a versatile 1:1.47 speed up gear ratio, you can use this gearbox on rotary cutters that contain a diameter of more than 5 feet and maintain the very same level of accuracy with every cut! Featuring a blade carrier mounting nut, along with a strong cotter pin to keep your blade in place, this particular gearbox is durable and strong – always giving you more with every cut. In addition, you’ll find speed ball bearing units and gears and shafts treated with high temperatures to ensure the longevity of your replacement product for years of use. The Perfect Replacement When it’s time to replace an old or broken rotary cutter gearbox, the Rancher Supply 40HP Shear Bolt Gearbox should be your first choice. Think about it, why build a new system when you can simply replace your gearbox at an affordable price that doesn’t set you back? And don’t forget – this product includes 5 replacement shear bolts, offering you tremendous value with your purchase. This replacement gearbox is compatible with a wide range of rotary cutter machines.

Package Dimensions: ‎13.5 x 13.2 x 13.1 inches


Item Weight: ‎45.4 pounds


Manufacturer: ‎Rancher Supply


Item model number: ‎401-0007AB


Date First Available: ‎December 18, 2019


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, May 15

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • Works great
Fit perfect took one hour install by myself then I immediately put it to work and ran it hard and it cut way better than my OEM gearbox only thing I would let ppl know is it ships without oil so make sure u fill it up before u test run it.
Reviewed in the United States on March 31, 2026 by Nikki Waldron

  • Gearbox replacement
Good product
Reviewed in the United States on March 3, 2026 by Robert Oldner

  • Perfect
He said it was easy to put in and it fits fine
Reviewed in the United States on August 28, 2025 by Amazon Customer

  • Decent box at a reasonable price
I purchased this item to replace the Omni gear box on my Land Pride RCR1260. The gear box was a direct fit and after 10 hours of use, it has shown no signs of problems.
Reviewed in the United States on November 2, 2025 by Joshua

  • As advertised. Works perfectly…..
Considering the labor of tearing down a bush hog, install was easy. Proper tools are a necessity. Installs and operates as advertised. Highly recommend…..
Reviewed in the United States on August 31, 2025 by Dan

  • Bush hogging gear box.
It's an exact fit for my 6' tractor supply bush hogging. I bush hoged 3 acres with it. It works like it should.
Reviewed in the United States on August 14, 2025 by Rick

  • Great Business and Fast shipping!
Great replacement and easy to install!
Reviewed in the United States on March 15, 2026 by Amazon Customer

  • Good experience
My order arrived in a timely manner, was well packaged and showed no damage in shipment. I've since installed the gearbox and it fit perfectly and works as advertised, I would recommend this shipper.
Reviewed in the United States on July 15, 2025 by Reillybones

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