The Best Brush Cutter Gear Box of 2022 – Reviewed and Top Rated
After hours researching and comparing all models on the market, we find out the Best Brush Cutter Gear Box of 2022. Check our ranking below.
2,797 Reviews Scanned
- 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.
- 40 HP
- Spline
- Gearbox
- Rotary Cutter
- Gear Ratio: 1:1.47 speed up gear ratio for use on 5' and larger diameter rotary cutters.
- Input and Output Shaft Diameter: 1-3/8” - 6 spline input shaft with 12 tapered spline output shaft
- Power Rating: This gear box has an input RPM of 540, output RPM of 794 with a max torque of 446 Nm, and has a counterclockwise rotation
- Lubrication: We ship our gearboxes dry; lubrication is not included. The gearbox requires 16 ounces of 80-90W gear lube or equivalent
- Mounting: Four-bolt mounting matches industry standards, each gearbox includes a blade carrier mounting nut and cotter pin. Includes replacement stump jumper / flywheel 12 splined hub
- 4 BOLT MOUNTING 4-3/4" ON CENTER
- 1-3/8" DIAMETER INPUT SHAFT WITH 6 SPLINES
- 1.57" DIAMETER OUTPUT SHAFT WITH 12 TAPER SPLINES
- WILL NOT REPLACE GEARBOXES WITH 6 BOLT MOUNTING, WILL NOT REPLACE GEARBOXES WITH SMOOTH INPUT SHAFTS, WILL NOT REPLACE GEARBOXES WITH 1-3/8" DIAMETER INPUT SHAFT WITH 21 SPLINES OR 1-3/4" INPUT SHAFT WITH 20 SPLINES!
- 【Part Number】251390, RC-51H
- 【Application】Replacement for Omni Gear RC51H 90-degree Gearbox. 1.93 ratio, 1-1/4"" 14 tooth splined input shaft with blade hub. Brush Cut Part Number 251390.
- 【High Quality】Made of high-quality Material, and undergoes rigorous inspection and verification, and is tested to meet various most stringent quality standards before leaving the factory, has good durability and reliability, long service life
- 【Direct replacement】Manufactured to original factory specifications and components tested to meet original specifications, fully adapted, no need to modify, directly replacement.
- 【Customer Support】 At PratRaken, zero risk purchase is for every customer's smiles. Please get in touch with us at any time if the product has any quality issues, such as damage or isn't appropriate for your automobile
- Universal Compatibility | Model 2088028：Designed for 4'/5'/6' rotary cutters and 40HP gearboxes, compatible with both 3-point & pull-type hitch systems. Ideal replacement for Bush Hog/Land Pride/Rhino equipment."
- Dual-Diameter Blade Pan Engineering：20.5" top diameter maximizes cutting sweep, while 16.5" flat bottom prevents soil buildup. Vertical supports handle 1,500lbs+ impact loads without deformation.
- Heavy-Duty Steel Reinforcement：7lbs (3.2kg) thicker than standard models with 3/4" steel plates. Passed 2,000+ cycle fatigue tests for brush clearing and rock strikes.
- Rapid-Install Bolt System：Precision 1-1/8" bolt holes with laser-aligned slots reduce installation time to 15 minutes. Includes Grade-8 bolts and shims kit.
- Multi-Terrain Cutting Mastery：Clears 2" diameter saplings in pastures, vineyards, and ditch banks. Maintains efficiency on 35° slopes with anti-slip hub design.
- 【COMPATIBLE WITH】 Replacement for Omni Gear RC-51H 90-degree Gearbox
- 【REPLACEMENT PART NUMBER】 251390
- 【INSTALLATION POSITION & PRECISE FITS】 Gearbox. Engineered within strict tolerances to directly replace your old or broken Hydraulic Brush Cutter Gearbox. Accepted provide VIN to verify the compatibility. Notice: Please use the appropriate service manual for the operation. If you do not have an installation manual or are not skilled enough to install this part, it is recommended that you seek help from a qualified mechanic
- 【PACKAGE LIST & SPECIFICATION】 1 pcs x Hydraulic Brush Cutter Gearbox; Model: RC-51H
- 【REST ASSURED OF QUALITY】 This Hydraulic Brush Cutter Gearbox is factory p-roven. We will be responsible for dealing with them if the product has any quality problems within 1 year
- Application: Replaces OEM gearboxes on 4', 5' and some 6' rotary cutters by these manufacturers: Worksaver, Hawkline, International, WAC, Big Bee, LMC, King Kutter, Midwest, Servis, Bush Hog, some Howse and others. Please check measurements for proper fitment.
- Technical Info:
- Bolt Pattern: 4-3/4" Square with holes for 5/8" bolt
- Input Shaft: 1-3/8" 6-spline
- Output Shaft: 1-9/16" Tapered 12-spline
- Fitment:For Various Strimmer Trimmer Brush Cutter.
- Size: Square Hole 26mm Casing Inner Diameter The gearbox has 10 x 1.25 left hand male thread
- Package Include:1 * Gearhead
- 【Widely use】It can be normally used for brush cutters, trimmers, lawnmowers, etc. This is a common type gear box accessory used for lawnmowers
- 【Two types of gear box】There are two types of gear box in different teeth numbers that you can choose as need
- 【High-quality materials】Made of high quality aluminum alloy and steel, it is sturdy and
- 【Great replacement】This gear would be great replacement for your old or broken ones
Last update on 2025-10-26 / Affiliate links / Images from Amazon Product Advertising API
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